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1. Determining the nanoflare heating frequency of an X-ray Bright Point observed by MaGIXS

Author

Mondal, Biswajit, Athiray, P. S., Winebarger, Amy R., Savage, Sabrina L., Kobayashi, Ken, Bradshaw, Stephen, Barnes, Will, Champey, Patrick R., Cheimets, Peter, Dudik, Jaroslav, Golub, Leon, Mason, Helen E., McKenzie, David E., Moore, Christopher S., Madsen, Chad, Reeves, Katharine K., Testa, Paola, Vigil, Genevieve D., Warren, Harry P., Walsh, Robert W., and Del Zanna, Giulio

Subjects
Astrophysics - Solar and Stellar Astrophysics
Abstract

Nanoflares are thought to be one of the prime candidates that can heat the solar corona to its multi-million kelvin temperature. Individual nanoflares are difficult to detect with the present generation instruments, however their presence can be inferred by comparing simulated nanoflare-heated plasma emissions with the observed emission. Using HYDRAD coronal loop simulations, we model the emission from an X-ray bright point (XBP) observed by the Marshall Grazing Incidence X-ray Spectrometer (MaGIXS), along with nearest-available observations from the Atmospheric Imaging Assembly (AIA) onboard Solar Dynamics Observatory (SDO) and X-Ray Telescope (XRT) onboard Hinode observatory. The length and magnetic field strength of the coronal loops are derived from the linear-force-free extrapolation of the observed photospheric magnetogram by Helioseismic and Magnetic Imager (HMI) onboard SDO. Each loop is assumed to be heated by random nanoflares, whose magnitude and frequency are determined by the loop length and magnetic field strength. The simulation results are then compared and matched against the measured intensity from AIA, XRT, and MaGIXS. Our model results indicate the observed emissions from the XBP under study could be well matched by a distribution of nanoflares with average delay times 1500 s to 3000 s, which suggest that the heating is dominated by high-frequency events. Further, we demonstrate the high sensitivity of MaGIXS and XRT to diagnose the heating frequency using this method, while AIA passbands are found to be the least sensitive., Comment: Accepted for publication in the Astrophysical Journal (ApJ)

Published
2024

2. The First Flight of the Marshall Grazing Incidence X-ray Spectrometer (MaGIXS)

Author

Savage, Sabrina L., Winebarger, Amy R., Kobayashi, Ken, Athiray, P. S., Beabout, Dyana, Golub, Leon, Walsh, Robert W., Beabout, Brent, Bradshaw, Stephen, Bruccoleri, Alexander R., Champey, Patrick R., Cheimets, Peter, Cirtain, Jonathan, DeLuca, Edward, Del Zanna, Giulio, Guillory, Anthony, Haight, Harlan, Heilmann, Ralf K., Hertz, Edward, Hogue, William, Kegley, Jeffery, Kolodziejczak, Jeffery, Madsen, Chad, Mason, Helen, McKenzie, David E., Ranganathan, Jagan, Reeves, Katharine K., Robertson, Bryan, Schattenburg, Mark L., Scholvin, Jorg, Siler, Richard, Testa, Paola, Vigil, Genevieve D., Warren, Harry P., Watkinson, Bejamin, Weddendorf, Bruce, and Wright, Ernest

Subjects
Astrophysics - Solar and Stellar Astrophysics, Astrophysics - Instrumentation and Methods for Astrophysics
Abstract

The Marshall Grazing Incidence X-ray Spectrometer (MaGIXS) sounding rocket experiment launched on July 30, 2021 from the White Sands Missile Range in New Mexico. MaGIXS is a unique solar observing telescope developed to capture X-ray spectral images, in the 6 - 24 Angstrom wavelength range, of coronal active regions. Its novel design takes advantage of recent technological advances related to fabricating and optimizing X-ray optical systems as well as breakthroughs in inversion methodologies necessary to create spectrally pure maps from overlapping spectral images. MaGIXS is the first instrument of its kind to provide spatially resolved soft X-ray spectra across a wide field of view. The plasma diagnostics available in this spectral regime make this instrument a powerful tool for probing solar coronal heating. This paper presents details from the first MaGIXS flight, the captured observations, the data processing and inversion techniques, and the first science results., Comment: 20 pages, 18 figures

Published
2022
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3. Calibration of the MaGIXS experiment II: Flight Instrument Calibration

Author

Athiray, P. S., Winebarger, Amy R., Champey, Patrick, Kobayashi, Ken, Savage, Sabrina, Beabout, Brent, Beabout, Dyana, Broadway, David, Bruccoleri, Alexander R., Cheimets, Peter, Golub, Leon, Gullikson, Eric, Haight, Harlan, Heilmann, Ralf K., Hertz, Edward, Hogue, William, Johnson, Steven, Kegley, Jeffrey, Kolodziejczak, Jeffery, Madsen, Chad, Schattenburg, Mark L., Siler, Richard, Vigil, Genevieve D., and Wright, Ernest

Subjects
Astrophysics - Instrumentation and Methods for Astrophysics, Astrophysics - Solar and Stellar Astrophysics
Abstract

The Marshall Grazing Incidence X-ray Spectrometer (MaGIXS) is a sounding rocket experiment that observes the soft X-ray spectrum of the Sun from 6.0 - 24 Angstrom (0.5 - 2.0 keV), successfully launched on 30 July 2021. End-to-end alignment of the flight instrument and calibration experiments are carried out using the X-ray and Cryogenic Facility (XRCF) at NASA Marshall Space Flight Center. In this paper, we present the calibration experiments of MaGIXS, which include wavelength calibration, measurement of line spread function, and determination of effective area. Finally, we use the measured instrument response function to predict the expected count rates for MaGIXS flight observation looking at a typical solar active region, Comment: 20 pages, 16 figures, Accepted for publication in the Astrophysical Journal

Published
2021
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4. Calibration of the MaGIXS experiment I: Calibration of the X-ray source at the X-ray and Cryogenic Facility (XRCF)

Author

Athiray, P. S., Winebarger, Amy R., Champey, Patrick, Kobayashi, Ken, Vigil, Genevieve D., Haight, Harlan, Johnson, Steven, Bethge, Christian, Rachmeler, Laurel A., Savage, Sabrina, Beabout, Brent, Beabout, Dyana, Hogue, William, Guillory, Anthony, Siler, Richard, Wright, Ernest, and Kegley, Jeffrey

Subjects
Astrophysics - Instrumentation and Methods for Astrophysics
Abstract

The Marshall Grazing Incidence Spectrometer {\it MaGIXS} is a sounding rocket experiment that will observe the soft X-ray spectrum of the Sun from 24 - 6.0 \AA\ (0.5 - 2.0 keV) and is scheduled for launch in 2021. Component and instrument level calibrations for the {\it MaGIXS} instrument are carried out using the X-ray and Cryogenic Facility (XRCF) at NASA Marshall Space Flight Center. In this paper, we present the calibration of the incident X-ray flux from the electron impact source with different targets at the XRCF using a CCD camera; the photon flux at the CCD was low enough to enable its use as a "photon counter" i.e. the ability to identify individual photon hits and calculate their energy. The goal of this paper is two-fold: 1) to confirm that the flux measured by the XRCF beam normalization detectors is consistent with the values reported in the literature and therefore reliable for {\it MaGIXS} calibration and 2) to develop a method of counting photons in CCD images that best captures their number and energy, Comment: 11 pages, 8 figures, Accepted for publication in The Astrophysical Journal

Published
2020
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5. Determining the Nanoflare Heating Frequency of an X-Ray Bright Point Observed by MaGIXS

Author

Biswajit Mondal, P. S. Athiray, Amy R. Winebarger, Sabrina L. Savage, Ken Kobayashi, Stephen Bradshaw, Will Barnes, Patrick R. Champey, Peter Cheimets, Jaroslav Dudík, Leon Golub, Helen E. Mason, David E. McKenzie, Christopher S. Moore, Chad Madsen, Katharine K. Reeves, Paola Testa, Genevieve D. Vigil, Harry P. Warren, Robert W. Walsh, and Giulio Del Zanna

Subjects
Solar coronal heating, Solar coronal loops, Solar x-ray emission, X-ray bright point, Astrophysics, QB460-466
Abstract

Nanoflares are thought to be one of the prime candidates that can heat the solar corona to its multimillion kelvin temperature. Individual nanoflares are difficult to detect with the present generation of instruments, but their presence can be inferred by comparing simulated nanoflare-heated plasma emissions with the observed emission. Using HYDRAD coronal loop simulations, we model the emission from an X-ray bright point (XBP) observed by the Marshall Grazing Incidence X-ray Spectrometer (MaGIXS), along with the nearest available observations from the Atmospheric Imaging Assembly (AIA) on board the Solar Dynamics Observatory (SDO) and the X-Ray Telescope (XRT) on board the Hinode observatory. The length and magnetic field strength of the coronal loops are derived from the linear force-free extrapolation of the observed photospheric magnetogram by the Helioseismic and Magnetic Imager on board SDO. Each loop is assumed to be heated by random nanoflares, whose magnitude and frequency are determined by the loop length and magnetic field strength. The simulation results are then compared and matched against the measured intensity from AIA, XRT, and MaGIXS. Our model results indicate the observed emission from the XBP under study could be well matched by a distribution of nanoflares with average delay times 1500–3000 s. Further, we demonstrate the high sensitivity of MaGIXS and XRT for diagnosing the heating frequency using this method, while AIA passbands are found to be the least sensitive.

Published
2024
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6. The High-Resolution Coronal Imager, Flight 2.1

Author

Rachmeler, Laurel A., Winebarger, Amy R., Savage, Sabrina L., Golub, Leon, Kobayashi, Ken, Vigil, Genevieve D., Brooks, David H., Cirtain, Jonathan W., De Pontieu, Bart, McKenzie, David E., Morton, Richard J., Peter, Hardi, Testa, Paola, Tiwari, Sanjiv K., Walsh, Robert W., Warren, Harry P., Alexander, Caroline, Ansell, Darren, Beabout, Brent L., Beabout, Dyana L., Bethge, Christian W., Champey, Patrick R., Cheimets, Peter N., Cooper, Mark A., Creel, Helen K., Gates, Richard, Gomez, Carlos, Guillory, Anthony, Haight, Harlan, Hogue, William D., Holloway, Todd, Hyde, David W., Kenyon, Richard, Marshall, Joseph N., McCracken, Jeff E., McCracken, Kenneth, Mitchell, Karen O., Ordway, Mark, Owen, Tim, Ranganathan, Jagan, Robertson, Bryan A., Payne, M. Janie, Podgorski, William, Pryor, Jonathan, Samra, Jenna, Sloan, Mark D., Soohoo, Howard A., Steele, D. Brandon, Thompson, Furman V., Thornton, Gary S., Watkinson1, Benjamin, and Windt, David

Subjects
Astrophysics - Solar and Stellar Astrophysics
Abstract

The third flight of the High-Resolution Coronal Imager (Hi-C 2.1) occurred on May 29, 2018, the Sounding Rocket was launched from White Sands Missile Range in New Mexico. The instrument has been modified from its original configuration (Hi-C 1) to observe the solar corona in a passband that peaks near 172 Angstrom and uses a new, custom-built low-noise camera. The instrument targeted Active Region 12712, and captured 78 images at a cadence of 4.4 sec (18:56:22 - 19:01:57 UT; 5 min and 35 sec observing time). The image spatial resolution varies due to quasi-periodic motion blur from the rocket; sharp images contain resolved features of at least 0.47 arcsec. There are coordinated observations from multiple ground- and space-based telescopes providing an unprecedented opportunity to observe the mass and energy coupling between the chromosphere and the corona. Details of the instrument and the data set are presented in this paper., Comment: 26 pages, 15 figures, submitted to Solar Physics

Published
2019
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7. Solar Active Region Heating Diagnostics from High Temperature Emission using the Marshall Grazing Incidence X-ray Spectrometer (MaGIXS)

Author

Athiray, P. S., Winebarger, Amy R., Barnes, Will T., Bradshaw, Stephen J., Savage, Sabrina, Warren, Harry P., Kobayashi, Ken, Champey, Patrick, Golub, Leon, and Glesener, Lindsay

Subjects
Astrophysics - Solar and Stellar Astrophysics
Abstract

The relative amount of high temperature plasma has been found to be a useful diagnostic to determine the frequency of coronal heating on sub-resolution structures. When the loops are infrequently heated, a broad emission measure (EM) over a wider range of temperatures is expected. A narrower EM is expected for high frequency heating where the loops are closer to equilibrium. The soft X-ray spectrum contains many spectral lines that provide high temperature diagnostics, including lines from Fe XVII-XIX. This region of the solar spectrum will be observed by the Marshall Grazing Incidence Spectrometer (MaGIXS) in 2020. In this paper, we derive the expected spectral lines intensity in MaGIXS to varying amounts of high temperature plasma to demonstrate that a simple line ratio of these provides a powerful diagnostic to determine the heating frequency. Similarly, we examine ratios of AIA channel intensities, filter ratios from a XRT, and energy bands from the FOXSI sounding rocket to determine their sensitivity to this parameter. We find that both FOXSI and MaGIXS provide good diagnostic capability for high-temperature plasma. We then compare the predicted line ratios to the output of a numerical model and confirm the MaGIXS ratios provide an excellent diagnostic for heating frequency., Comment: Accepted for publication in ApJ

Published
2019
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8. CLASP Constraints on the Magnetization and Geometrical Complexity of the Chromosphere-Corona Transition Region

Author

Bueno, J. Trujillo, Štěpán, J., Belluzzi, L., Ramos, A. Asensio, Sainz, R. Manso, Alemán, T. del Pino, Casini, R., Ishikawa, R., Kano, R., Winebarger, A., Auchère, F., Narukage, N., Kobayashi, K., Bando, T., Katsukawa, Y., Kubo, M., Ishikawa, S., Giono, G., Hara, H., Suematsu, Y., Shimizu, T., Sakao, T., Tsuneta, S., Ichimoto, K., Cirtain, J., Champey, P., De Pontieu, B., and Carlsson, M.

Subjects
Astrophysics - Solar and Stellar Astrophysics
Abstract

The Chromospheric Lyman-Alpha Spectro-Polarimeter (CLASP) is a suborbital rocket experiment that on 3rd September 2015 measured the linear polarization produced by scattering processes in the hydrogen Ly-$\alpha$ line of the solar disk radiation, whose line-center photons stem from the chromosphere-corona transition region (TR). These unprecedented spectropolarimetric observations revealed an interesting surprise, namely that there is practically no center-to-limb variation (CLV) in the $Q/I$ line-center signals. Using an analytical model, we first show that the geometrical complexity of the corrugated surface that delineates the TR has a crucial impact on the CLV of the $Q/I$ and $U/I$ line-center signals. Secondly, we introduce a statistical description of the solar atmosphere based on a three-dimensional (3D) model derived from a state-of-the-art radiation magneto-hydrodynamic simulation. Each realization of the statistical ensemble is a 3D model characterized by a given degree of magnetization and corrugation of the TR, and for each such realization we solve the full 3D radiative transfer problem taking into account the impact of the CLASP instrument degradation on the calculated polarization signals. Finally, we apply the statistical inference method presented in a previous paper to show that the TR of the 3D model that produces the best agreement with the CLASP observations has a relatively weak magnetic field and a relatively high degree of corrugation. We emphasize that a suitable way to validate or refute numerical models of the upper solar chromosphere is by confronting calculations and observations of the scattering polarization in ultraviolet lines sensitive to the Hanle effect., Comment: Accepted for publication in The Astrophysical Journal Letters

Published
2018
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9. A Statistical Inference Method for Interpreting the CLASP Observations

Author

Stepan, J., Bueno, J. Trujillo, Belluzzi, L., Ramos, A. Asensio, Sainz, R. Manso, Aleman, T. del Pino, Casini, R., Kano, R., Winebarger, A., Auchere, F., Ishikawa, R., Narukage, N., Kobayashi, K., Bando, T., Katsukawa, Y., Kubo, M., Ishikawa, S., Giono, G., Hara, H., Suematsu, Y., Shimizu, T., Sakao, T., Tsuneta, S., Ichimoto, K., Cirtain, J., Champey, P., De Pontieu, B., and Carlsson, M.

Subjects
Astrophysics - Solar and Stellar Astrophysics
Abstract

On 3rd September 2015, the Chromospheric Lyman-Alpha SpectroPolarimeter (CLASP) successfully measured the linear polarization produced by scattering processes in the hydrogen Lyman-$\alpha$ line of the solar disk radiation, revealing conspicuous spatial variations in the $Q/I$ and $U/I$ signals. Via the Hanle effect the line-center $Q/I$ and $U/I$ amplitudes encode information on the magnetic field of the chromosphere-corona transition region (TR), but they are also sensitive to the three-dimensional structure of this corrugated interface region. With the help of a simple line formation model, here we propose a statistical inference method for interpreting the Lyman-$\alpha$ line-center polarization observed by CLASP., Comment: Accepted for publication in The Astrophysical Journal

Published
2018
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10. Discovery of Scattering Polarization in the Hydrogen Lyman-$\alpha$ Line of the Solar Disk Radiation

Author

Kano, R., Bueno, J. Trujillo, Winebarger, A., Auchère, F., Narukage, N., Ishikawa, R., Kobayashi, K., Bando, T., Katsukawa, Y., Kubo, M., Ishikawa, S., Giono, G., Hara, H., Suematsu, Y., Shimizu, T., Sakao, T., Tsuneta, S., Ichimoto, K., Goto, M., Belluzzi, L., Štěpán, J., Ramos, A. Asensio, Sainz, R. Manso, Champey, P., Cirtain, J., De Pontieu, B., Casini, R., and Carlsson, M.

Subjects
Astrophysics - Solar and Stellar Astrophysics
Abstract

There is a thin transition region (TR) in the solar atmosphere where the temperature rises from 10,000 K in the chromosphere to millions of degrees in the corona. Little is known about the mechanisms that dominate this enigmatic region other than the magnetic field plays a key role. The magnetism of the TR can only be detected by polarimetric measurements of a few ultraviolet (UV) spectral lines, the Lyman-$\alpha$ line of neutral hydrogen at 121.6 nm (the strongest line of the solar UV spectrum) being of particular interest given its sensitivity to the Hanle effect (the magnetic-field-induced modification of the scattering line polarization). We report the discovery of linear polarization produced by scattering processes in the Lyman-$\alpha$ line, obtained with the Chromospheric Lyman-Alpha Spectro-Polarimeter (CLASP) rocket experiment. The Stokes profiles observed by CLASP in quiet regions of the solar disk show that the $Q/I$ and $U/I$ linear polarization signals are of the order of 0.1 % in the line core and up to a few percent in the nearby wings, and that both have conspicuous spatial variations with scales of $\sim 10$ arcsec. These observations help constrain theoretical models of the chromosphere-corona TR and extrapolations of the magnetic field from photospheric magnetograms. In fact, the observed spatial variation from disk to limb of polarization at the line core and wings already challenge the predictions from three-dimensional magnetohydrodynamical models of the upper solar chromosphere.

Published
2017
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11. Temporal Pointing Variations of The Solar Dynamics Observatory's HMI and AIA Instruments on Sub-Weekly Time Scales

Author

Orange, N. Brice, Oluseyi, Hakeem M., Chesny, David L., Patel, Maulik, Champey, Patrick, Hesterly, Katie, Anthony, Dylan, and Treen, Robert

Subjects
Astrophysics - Solar and Stellar Astrophysics
Abstract

Achieving sub-arcsecond co-registration across varying time-lines of multi-wavelength and instrument images is not trivial, and requires accurate characterization of instrument pointing jitter. In this work we have investigated internal pointing errors, on daily and yearly time-scales, occurring across the \textit{Solar Dynamics Observatory}'s (SDO) {\it Atmospheric Imaging Assembly} (AIA) and { \it Helioseismic Magnetic Imager} (HMI). Using cross-correlation techniques on AIA 1700\,{\AA} passband and HMI line-of-sight (LOS) magnetograms, from three years of observational image pairs at approximately three day intervals, internal pointing errors are quantified. Pointing variations of $\pm$\,0.26$\arcsec$ (jitter limited) and $\pm$\,0.50$\arcsec$ in the solar East-West ($x$) and North-South ($y$) directions, respectively, are measured. AIA observations of the Venus June 2012 transit are used to measure existing coalignment offsets in all passbands. We find AIA passband pointing variations are $< \Delta X_{CO} >$\,$=$\, 1.10$\arcsec$\,$\pm$\,1.41$\arcsec$ and $< \Delta Y_{CO} >$\,$=$\, 1.25$\arcsec$\,$\pm$\,1.24$\arcsec$, when aligned to HMI's nominal image center, referred to herein as the CutOut technique (CO). Minimal long-term pointing variations found between limb and correlation derived pointings provide evidence that image center positions provided by the instrument teams achieve single pixel accuracy on time-scales below their characterization. However, daily AIA passband pointing variations of $\lesssim$\,1.18$\arcsec$ indicate autonomous sub-arcsecond co-registration is not yet fully achievable., Comment: 16 pages, 11 figures

Published
2015
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12. Direct Observations of Plasma Upflows and Condensation in a Catastrophically Cooling Solar Transition Region Loop

Author

Orange, N. B., Chesny, D. L., Oluseyi, H. M., Hesterly, K., Patel, M., and Champey, P. R.

Subjects
Astrophysics - Solar and Stellar Astrophysics
Abstract

Minimal observational evidence exists for fast transition region (TR) upflows in the presence of cool loops. Observations of such occurrences challenge notions of standard solar atmospheric heating models, as well as their description of bright TR emission. Using the {\it EUV Imaging Spectrometer} (EIS) onboard {\it Hinode}, we observe fast upflows ($v_\lambda$\,$\le$\,$-$10 km s$^{-1}$) over multiple TR temperatures (5.8\,$\le$\,$\log T$\,$\le$ 6.0) at the footpoint sites of a cool loop ($\log T$\,$\le$\,6.0). Prior to cool loop energizing, asymmetric flows of $+$\,5 km s$^{-1}$ and $-$\,60 km s$^{-1}$ are observed at footpoint sites. These flows speeds and patterns occur simultaneously with both magnetic flux cancellation (at site of upflows only) derived from the {\it Solar Dynamics Observatory}'s (SDOs) { \it Helioseismic Magnetic Imager}'s (HMI) line-of-sight magnetogram images, and a 30\% mass in-flux at coronal heights. The incurred non-equilibrium structure of the cool loop leads to a catastrophic cooling event, with subsequent plasma evaporation indicating the TR as the heating site. From the magnetic flux evolution we conclude that magnetic reconnection between the footpoint and background field are responsible for observed fast TR plasma upflows., Comment: 10 pages, 8 figures

Published
2015
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13. The First Flight of the Marshall Grazing Incidence X-Ray Spectrometer (MaGIXS)

Author

Sabrina L. Savage, Amy R. Winebarger, Ken Kobayashi, P. S. Athiray, Dyana Beabout, Leon Golub, Robert W. Walsh, Brent Beabout, Stephen Bradshaw, Alexander R. Bruccoleri, Patrick R. Champey, Peter Cheimets, Jonathan Cirtain, Edward E. DeLuca, Giulio Del Zanna, Jaroslav Dudík, Anthony Guillory, Harlan Haight, Ralf K. Heilmann, Edward Hertz, William Hogue, Jeffery Kegley, Jeffery Kolodziejczak, Chad Madsen, Helen Mason, David E. McKenzie, Jagan Ranganathan, Katharine K. Reeves, Bryan Robertson, Mark L. Schattenburg, Jorg Scholvin, Richard Siler, Paola Testa, Genevieve D. Vigil, Harry P. Warren, Benjamin Watkinson, Bruce Weddendorf, and Ernest Wright

Subjects
Spectroscopy, Solar active regions, Solar x-ray emission, Solar coronal heating, Solar corona, Active solar corona, Astrophysics, QB460-466
Abstract

The Marshall Grazing Incidence X-ray Spectrometer (MaGIXS) sounding rocket experiment launched on 2021 July 30 from the White Sands Missile Range in New Mexico. MaGIXS is a unique solar observing telescope developed to capture X-ray spectral images of coronal active regions in the 6–24 Å wavelength range. Its novel design takes advantage of recent technological advances related to fabricating and optimizing X-ray optical systems, as well as breakthroughs in inversion methodologies necessary to create spectrally pure maps from overlapping spectral images. MaGIXS is the first instrument of its kind to provide spatially resolved soft X-ray spectra across a wide field of view. The plasma diagnostics available in this spectral regime make this instrument a powerful tool for probing solar coronal heating. This paper presents details from the first MaGIXS flight, the captured observations, the data processing and inversion techniques, and the first science results.

Published
2023
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14. Transcutaneous vagus nerve stimulation in erosive hand osteoarthritis: protocol for the randomised, double-blind, sham-controlled ESTIVAL trial

Author

Francis Berenbaum, Julien Champey, Jérémie Sellam, Annick Tibi, Emmanuel Maheu, Pascal Richette, Grégoire Cormier, Jacques-Eric Gottenberg, Hubert Marotte, Alain Saraux, Sylvain Mathieu, Tabassome Simon, Jean-Philippe Bastard, Soraya Fellahi, Alexandra Rousseau, Laurence Bérard, François Rannou, Sandra Desouches, Yves-Marie Pers, Eric Lespessailles, Daniel Wendling, florent Eymard, Paul Ornetti, Denis Arniaud, Anne-Christine Rat, Nicolas Poursac, Roland Chapurlat, Anne Miquel, Alice Courties, Camille Deprouw, Amel Touati, Johanna Kalsch, Margaux Villevieille, Yves Henrontin, and Christian H. Roux

Subjects
Medicine
Published
2022
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16. Effect of Transcutaneous Vagus Nerve Stimulation in Erosive Hand Osteoarthritis: Results from a Pilot Trial

Author

Alice Courties, Camille Deprouw, Emmanuel Maheu, Eric Gibert, Jacques-Eric Gottenberg, Julien Champey, Béatrice Banneville, Camille Chesnel, Gérard Amarenco, Alexandra Rousseau, Francis Berenbaum, and Jérémie Sellam

Subjects
erosive hand osteoarthritis, pain, function, vagus nerve stimulation, inflammation, Medicine
Abstract

Beyond its effect on vegetative functions, the activation of the vagus nerve inhibits inflammation and reduces pain signaling. The aim of this open-label pilot study was to determine the efficacy and tolerance of transcutaneous auricular VNS (taVNS) on erosive hand osteoarthritis (EHOA) symptoms. Symptomatic EHOA patients with hand pain VAS ≥ 40/100 mm and ≥1 interphalangeal swollen joint(s) were included. The taVNS was performed for 4 weeks using an auricular electrode applied one hour per day and connected to a TENS device with pre-established settings. Clinical efficacy was evaluated by changes between baseline and at 4 weeks with hand pain VAS and the functional index FIHOA score, using a Wilcoxon t-test. The treatment tolerance was also evaluated. Eighteen patients (median age 69 years old, 83% women) were analyzed. At baseline, hand pain VAS was 60 mm [IQR 50; 78.2] and FIHOA 15 [10.7; 20.2]. After 4 weeks, taVNS significantly reduced hand pain VAS, with a median decrease of 23.5 mm [7.7; 37.2] (p = 0.001), as well as FIHOA, with a median decrease of 2 points [0.75; 5.2] (p = 0.01). No serious adverse events were reported. One patient stopped taVNS because of auricular discomfort. This first proof-of-concept trial indicated that taVNS is feasible and may decrease joint inflammation and clinical symptoms in EHOA, arguing for a randomized controlled study versus sham stimulation.

Published
2022
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17. Admission of tetanus patients to the ICU: a retrospective multicentre study

Author

Rafael Mahieu, Thomas Reydel, Adel Maamar, Jean-Marc Tadié, Angeline Jamet, Arnaud W. Thille, Nicolas Chudeau, Julien Huntzinger, Steven Grangé, Gaetan Beduneau, Anne Courte, Stephane Ehrmann, Jérémie Lemarié, Sébastien Gibot, Michael Darmon, Christophe Guitton, Julia Champey, Carole Schwebel, Jean Dellamonica, Thibaut Wipf, Ferhat Meziani, Damien Du Cheyron, Achille Kouatchet, and Nicolas Lerolle

Subjects
Tetanus, Intensive care unit, Outcome, Mechanical ventilation, Elderly patient, Prognosis, Medical emergencies. Critical care. Intensive care. First aid, RC86-88.9
Abstract

Abstract Background An extended course of tetanus (up to 6 weeks) requiring ICU admission and protracted mechanical ventilation (MV) may have a significant impact on short- and long-term survival. The subject is noteworthy and deserves to be discussed. Methods Twenty-two ICUs in France performed tetanus screenings on patients admitted between January 2000 and December 2014. Retrospective data were collected from hospital databases and through the registers of the town hall of the patients. Results Seventy patients were included in 15 different ICUs. Sixty-three patients suffered from severe or very severe tetanus according to the Ablett classification. The median age was 80 years [interquartile range 73–84], and 86% of patients were women. Ninety per cent of patients (n = 63) required MV for a median of 36 days [26–46], and 66% required administration of a neuromuscular-blocking agent for 23 days [14–29]. A nosocomial infection occurred in 43 patients (61%). ICU and 1-year mortality rates were 14% (n = 10) and 16% (n = 11), respectively. Forty-five per cent of deaths occurred during the first week. Advanced age, a higher SAPS II, any infection, and the use of vasopressors were significantly associated with a lower number of days alive without ventilator support by day 90. Age was the only factor that significantly differed between deceased and survivors at 1 year (83 [81–85] vs. 79 [73–84] years, respectively; p = 0.03). Sixty-one per cent of survivors suffered no impairment to their functional status. Conclusion In a high-income country, tetanus mainly occurs in healthy elderly women. Despite prolonged MV and extended ICU length of stay, we observed a low 1-year mortality rate and good long-term functional status.

Published
2017
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19. The Marshall 100-meter x-ray beamline

Author

O'Dell, Stephen L., Gaskin, Jessica A., Pareschi, Giovanni, Spiga, Daniele, Thomas, Nicholas E., Baumgartner, Wayne H., Bongiorno, Stephen D., Champey, Patrick R., Cheney, Stephen P., Davis, C. Grant, Gaskin, Jessica A., Kolodziejczak, Jeffery, Singam, Panini, and Smith, David D.

Published
2023
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20. Polarization Calibration of the Chromospheric Lyman-Alpha SpectroPolarimeter for a 0.1% Polarization Sensitivity in the VUV Range. Part II: In-Flight Calibration

Author

Giono, G., Ishikawa, R., Narukage, N., Kano, R., Katsukawa, Y., Kubo, M., Ishikawa, S., Bando, T., Hara, H., Suematsu, Y., Winebarger, A., Kobayashi, K., Auchère, F., Trujillo Bueno, J., Tsuneta, S., Shimizu, T., Sakao, T., Cirtain, J., Champey, P., Asensio Ramos, A., Štěpán, J., Belluzzi, L., Manso Sainz, R., De Pontieu, B., Ichimoto, K., Carlsson, M., Casini, R., and Goto, M.

Published
2017
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21. Proceedings of Réanimation 2017, the French Intensive Care Society International Congress

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Bougouin, Wulfran, Marijon, Eloi, Planquette, Benjamin, Karam, Nicole, Dumas, Florence, Celermajer, David, Jost, Daniel, Lamhaut, Lionel, Beganton, Frankie, Cariou, Alain, Meyer, Guy, Jouven, Xavier, Bureau, Côme, Charpentier, Julien, Salem, Omar Ben Hadj, Guillemet, Lucie, Arnaout, Michel, Ferre, Alexis, Geri, Guillaume, Mongardon, Nicolas, Pène, Frédéric, Chiche, Jean-Daniel, Mira, Jean-Paul, Labro, Guylaine, Belon, François, Luu, Vinh-Phuc, Chenet, Julien, Besch, Guillaume, Puyraveau, Marc, Piton, Gaël, Capellier, Gilles, Martin, Maëlle, Lascarrou, Jean-Baptiste, Le Thuaut, Aurélie, Lacherade, Jean-Claude, Martin-Lefèvre, Laurent, Fiancette, Maud, Vinatier, Isabelle, Lebert, Christine, Bachoumas, Konstantinos, Yehia, Aihem, Henry-Laguarrigue, Matthieu, Colin, Gwenhaël, Reignier, Jean, Privat, Elodie, Escutnaire, Joséphine, Dumont, Cyrielle, Baert, Valentine, Vilhelm, Christian, Hubert, Hervé, Robert-Edan, Vincent, Lakhal, Karim, Quartin, Andrew, Hobbs, Brian, Cely, Cynthia, Bell, Cynthia, Pham, Tai, Schein, Roland, Geng, Yimin, Ng, Chaan, Ehrmann, Stephan, Gandonnière, Charlotte Salmon, Boisramé-Helms, Julie, Le Tilly, Olivier, De Bretagne, Isabelle Benz, Mercier, Emmanuelle, Mankikian, Julie, Bretagnol, Anne, Meziani, Ferhat, Halimi, Jean Michel, Le Guellec, Chantal Barin, Gaudry, Stéphane, Hajage, David, Tubach, Florence, Pons, Bertrand, Boulet, Eric, Boyer, Alexandre, Chevrel, Guillaume, Lerolle, Nicolas, Carpentier, Dorothée, de Prost, Nicolas, Lautrette, Alexandre, Mayaux, Julien, Nseir, Saad, Ricard, Jean-Damien, Dreyfuss, Didier, Robert, René, Garzotto, Franscesco, Kipnis, Eric, Tetta, Ciro, Ronco, Claudio, Schnell, David, Aurelie, Bourmaud, Reynaud, Marie, Clec’h, Christophe, Benyamina, Mourad, Vincent, François, Mariat, Christophe, Bornstain, Caroline, Rouleau, Stephane, Leroy, Christophe, Cohen, Yves, Morel, Jerome, Legrand, Matthieu, Terreaux, Jeremy, Darmon, Michaël, Cantier, Marie, Morisot, Adeline, Guérot, Emmanuel, Canet, Emmanuel, De Montmollin, Etienne, Voiriot, Guillaume, Neuville, Mathilde, Timsit, Jean-François, Sonneville, Romain, Fayssoil, Abdallah, Stojkovic, Tania, Behin, Anthony, Ogna, Adam, Lofaso, Frédéric, Laforet, Pascal, Wahbi, Karim, Prigent, Helene, Duboc, Denis, Orlikowski, David, Eymard, Bruno, Annane, Djillali, Le Guennec, Loic, Cholet, Clémentine, Bréchot, Nicolas, Hekimian, Guillaume, Besset, Sébastien, Lebreton, Guillaume, Nieszkowska, Ania, Trouillet, Jean Louis, Leprince, Pascal, Combes, Alain, Luyt, Charles-Edouard, Griton, Marion, Sesay, Musa, De Panthou, Nadia Sibaï, Bienvenu, Thomas, Biais, Matthieu, Nouette-Gaulain, Karine, Fossat, Guillaume, Baudin, Florian, Coulanges, Cécile, Bobet, Sabrine, Dupont, Arnaud, Courtes, Léa, Benzekri, Dalila, Kamel, Toufik, Muller, Grégoire, Bercault, Nicolas, Barbier, François, Runge, Isabelle, Skarzynski, Marie, Mathonnet, Armelle, Boulain, Thierry, Jouan, Youenn, Teixera, Noémie, Hassen-Khodja, Claire, Guillon, Antoine, Gaborit, Christophe, Grammatico-Guillon, Leslie, Rebière, Cécile, Azoulay, Elie, Misset, Benoit, Ruckly, Stephane, Garrouste-Orgeas, Maïté, Kentish-Barnes, Nancy, Duranteau, Jacques, Thuong, Marie, Joseph, Liliane, Renault, Anne, Lesieur, Olivier, Larbi, Anne-Gaelle Si, Viquesnel, Gérald, Zuber, Benjamin, Marque, Sophie, Kandelman, Stanislas, Pichon, Nicolas, Floccard, Bernard, Galon, Marion, Chevret, Sylvie, Kentish-Barnes, Nancy, Seegers, Valérie, Legriel, Stéphane, Jaber, Samir, Lefrant, Jean Yves, Reuter, Danielle, Guisset, Olivier, Cracco, Christophe, Seguin, Amélie, Durand-Gasselin, Jacques, Thirion, Marine, Cohen-Solal, Zoé, Foulgoc, Hélène, Rogier, Julien, Delobbe, Elsa, Schortgen, Frédérique, Asfar, Pierre, Julie, Boisramé-Helms, Grimaldi, David, Fabien, Grelon, Anguel, Nadia, Sigismond, Lasocki, Matthieu, Henry-Lagarrigue, Gonzalez, Frédéric, François, Legay, Guitton, Christophe, Schenck, Maleka, Jean-Marc, Doise, Radermacher, Peter, Kentish-Barnes, Nancy, Makunza, Joseph Nsiala, Nathalie, Mejeni Kamdem, Pierre, Akilimali, Adolphe, Kilembe Manzanza, Mahieu, Rafael, Reydel, Thomas, Jamet, Angéline, Chudeau, Nicolas, Huntzinger, Julien, Grange, Steven, Courte, Anne, Lemarie, Jérémie, Gibot, Sébastien, Champey, Julia, Dellamonica, Jean, Du Cheyron, Damien, Contou, Damien, Tadié, Jean-Marc, Cour, Martin, Beduneau, Gaetan, Marchalot, Antoine, Guérin, Laurent, Jochmans, Sebastien, Terzi, Nicolas, Preau, Sebastien, Brun-Buisson, Christian, Dessap, Armand Mekontso, Vedrenne-Cloquet, Meryl, Breinig, Sophie, Jung, Camille, Brussieux, Maxime, Marcoux, Marie-Odile, Durrmeyer, Xavier, Blondé, Renaud, Angoulvant, François, Grasset, Jérôme, Naudin, Jérôme, Dauger, Stéphane, Remy, Solenn, Kolev-Descamp, Karine, Demaret, Julie, Monneret, Guillaume, Javouhey, Etienne, Chomton, Maryline, Sauthier, Michaël, Vallieres, Emilie, Jouvet, Philippe, Geslain, Guillaume, Guellec, Isabelle, Rambaud, Jérôme, Schmidt, Matthieu, Schellongowski, Peter, Dorget, Amandine, Patroniti, Nicolo, Taccone, Fabio Silvio, Miranda, Dinis Reis, Reuter, Jean, Prodanovic, Hélène, Pierrot, Marc, Balik, Martin, Park, Sunghoon, Guérin, Claude, Papazian, Laurent, Jean, Reignier, Ayzac, Louis, Loundou, Anderson, Forel, Jean-Marie, Mezidi, Mehdi, Aublanc, Mylène, Perinel-Ragey, Sophie, Lissonde, Floriane, Louf-Durier, Aurore, Tapponnier, Romain, Yonis, Hodane, Coudroy, Remi, Frat, Jean-Pierre, Boissier, Florence, Thille, Arnaud W., Richard, Flore, Le Gullou-Guillemette, Hélène, Fahri, Jonathan, Kouatchet, Achille, Bodet-Contentin, Laetitia, Garot, Denis, Le Pennec, Déborah, Vecellio, Laurent, Tavernier, Elsa, Dequin, Pierre François, Messika, Jonathan, Martin, Yolaine, Maquigneau, Natacha, Puechberty, Christelle, Stoclin, Annabelle, Villard, Serge, Dechanet, Aline, De Jong, Audrey, Monnin, Marion, Girard, Mehdi, Chanques, Gérald, Molinari, Nicolas, Decavèle, Maxens, Campion, Sébastien, Ainsouya, Roukia, Niérat, Marie-Cécile, Raux, Mathieu, Similowski, Thomas, Demoule, Alexandre, Razazi, Keyvan, Tchir, Martial, May, Faten, Carteaux, Guillaume, Pauline, Rougevin-Baville, Marc, Andronikof, Bedos, Jean Pierre, Mehrsa, Koukabi, Mauger-Briche, Carole, Mijon, François, Trouiller, Pierre, Sztrymf, Benjamin, Cretallaz, Pierre, Mermillod-Blondin, Romain, Savary, Dominique, Sedghiani, Ines, Doghri, Hamdi, Jendoubi, Asma, Hamdi, Dhekra, Cherif, Mohamed Ali, Hechmi, Youssef Zied El, Zouheir, Jerbi, Persico, Nicolas, Maltese, Francois, Ferrigno, Cécile, Bablon, Amandine, Marmillot, Cécile, Roch, Antoine, Sedghiani, Ines, Papin, Grégory, Gainnier, Marc, Argaud, Laurent, Christophe, Adrie, Souweine, Bertrand, Goldgran-Toledano, Dany, Marcotte, Guillaume, Dumenil, Anne Sylvie, Carole, Schwebel, Cecchini, Jerôme, Tuffet, Samuel, Fartoukh, Muriel, Roux, Damien, Thyrault, Martial, Armand, Mekontso Dessap, Chauveau, Simon, Wesner, Nadège, Monnier-Cholley, Laurence, Bigé, Naïke, Ait-Oufella, Hafid, Guidet, Bertrand, Dubée, Vincent, Labroca, Pierre, Lemarié, Jérémie, Chiesa, Gérard, Laroyenne, Isabelle, Borrini, Léo, Klotz, Rémi, Sy, Quoc Phan, Cristina, Marie-Christine, Paysant, Jean, Fillâtre, Pierre, Gacouin, Arnaud, Revest, Matthieu, Tattevin, Pierre, Flecher, Erwan, Le Tulzo, Yves, Jamme, Matthieu, Daviaud, Fabrice, Marin, Nathalie, Thy, Michael, Duceau, Baptiste, Ardisson, Fanny, Sandrine, Valade, Venot, Marion, Schlemmer, Benoît, Zafrani, Lara, Pons, Stéphanie, Styfalova, Lenka, Bouadma, Lila, Radjou, Aguila, Lebut, Jordane, Mourvillier, Bruno, Dorent, Richard, Dilly, Marie-Pierre, Nataf, Patrick, Wolff, Michel, Le Gall, Aëlle, Bourcier, Simon, Tandjaoui-Lambiotte, Yacine, Das, Vincent, Alves, Mikael, Bigé, Naïke, Kamilia, Chtara, Rania, Ammar, Baccouch, Najeh, Turki, Olfa, Ben, Hmida Chokri, Bahloul, Mabrouk, Bouaziz, Mounir, Dupuis, Claire, Perozziello, Anne, Letheulle, Julien, Valette, Marc, Herrmann-Storck, Cécile, Crosby, Laura, Elkoun, Khalid, Madeux, Benjamin, Martino, Frédéric, Migueres, Hélène, Piednoir, Pascale, Posch, Matthias, Thiery, Guillaume, Huynh-Ky, Minh-Tu, Bouchard, Pierre Alexandre, Sarrazin, Jean-François, Lellouche, François, Nay, Mai-Anh, Lortat-Jacob, Brice, Rozec, Bertrand, Colnot, Marion, Belin, Nicolas, Barrot, Loïc, Navellou, Jean-Christophe, Patry, Cyrille, Chaignat, Claire, Claveau, Melanie, Claude, Frédéric, Aubron, Cécile, Mcquilten, Zoe, Bailey, Michael, Board, Jasmin, Buhr, Heidi, Cartwright, Bruce, Dennis, Mark, Forrest, Paul, Hodgson, Carol, Mcilroy, David, Murphy, Deirdre, Murray, Lynnette, Pellegrino, Vincent, Pilcher, David, Sheldrake, Jayne, Tran, Huyen, Vallance, Shirley, Cooper, Jamie, Bombled, Camille, Vidal, Charles, Margetis, Dimitri, Amour, Julien, Coart, Domien, Dubois, Jasperina, Van Herpe, Tom, Mesotten, Dieter, Bailly, Sébastien, Lucet, Jc, Lepape, Alain, L’hériteau, François, Aupée, Martine, Bervas, Caroline, Boussat, Sandrine, Berger-Carbonne, Anne, Machut, Anaïs, Savey, Anne, Tudesq, Jean-Jacques, Valade, Sandrine, Galicier, Lionel, De Bazelaire, Cédric, Munoz-Bongrand, Nicolas, Mignard, Xavier, Biard, Lucie, Mokart, Djamel, Nyunga, Martine, Bruneel, Fabrice, Rabbat, Antoine, Perez, Pierre, Meert, Anne Pascale, Benoit, Dominique, Mariotte, Eric, Ehooman, Franck, Hamidfar-Roy, Rebecca, Hourmant, Yannick, Mailloux, Arnaud, Beurton, Alexandra, Teboul, Jean-Louis, Girroto, Valentina, Laura, Galarza, Richard, Christian, Monnet, Xavier, Dubée, Vincent, Merdji, Hamid, Dang, Julien, Preda, Gabriel, Baudel, Jean-Luc, Desnos, Cyrielle, Zeitouni, Michel, Belaroussi, Ines, Parrot, Antoine, Blayau, Clarisse, Fulgencio, Jean-Pierre, Quesnel, Christophe, Labbe, Vincent, De Chambrun, Marc Pineton, Beloncle, François, Merceron, Sybille, Fedun, Yannick, Lecomte, Bernard, Devaquet, Jérôme, Puidupin, Marc, Verdière, Bruno, Amoura, Zahir, Vuillard, Constance, Xavier, Jais, Bourlier, Delphine, David, Amar, Caroline, Sattler, David, Montani, Gerald, Simmoneau, Olivier, Sitbon, Humbert, Marc, Laurent, Savale, Dujardin, Olivier, Bouglé, Adrien, Ait, Hamou Nora, Salem, Joe Elie, El-Helali, Najoua, Coppere, Zoé, Gibelin, Aude, Taconet, Clementine, Djibre, Michel, Maamar, Adel, Colobert, Elen, Fillatre, Pierre, Uhel, Fabrice, Camus, Christophe, Moraly, Josquin, Dahoumane, Redouane, Maury, Eric, Tan, Boun Kim, Emmanuel, Vivier, Pauline, Misslin, Laurence, Parmeland, Philippe, Poirié, Zahar, Jean-Ralph, Catherine, Haond, Christian, Pommier, Karim, Ait-Bouziad, Mounia, Hocine, Laura, Témime, Rasoldier, Vero Hanitra, Mager, Guy, Eraldi, Jean-Pierre, Gelinotte, Stéphanie, Bougerol, François, Dehay, Julien, Rigaud, Jean-Philippe, Declercq, Pierre Louis, Michel, Julien, Aissa, Nejla, Henard, Sandrine, Guerci, Philippe, Latar, Ichraq, Levy, Bruno, Girerd, Nicolas, Kimmoun, Antoine, Abdallah, Saousen Ben, Nakaa, Sabrine, Hraiech, Kmar, Braiek, Dhouha Ben, Adhieb, Ali, M’ghirbi, Abdelwaheb, Ousji, Ali, Hammouda, Zeineb, Abroug, Fekri, Sellami, Walid, Hajjej, Zied, Samoud, Walid, Labbene, Iheb, Ferjani, Mustapha, Medhioub, Fatma Kaaniche, Allela, Rania, Algia, Najla Ben, Cherif, Samar, Attia, Delphine, Herinjatovo, Andrianjafy, Francois, Xavier Laborne, Bouhouri, Med Aziz, Slaoui, Mohamed Taoufik, Soufi, A., Khaleq, K., Hamoudi, D., Nsiri, A., Harrar, R., Maury, Eric, Goursaud, Suzanne, Gauberti, Maxime, Labeyrie, Paul-Emile, Gaberel, Thomas, Agin, Véronique, Maubert, Eric, Vivien, Denis, Gakuba, Clément, Armel, Anwar, Abdou, Rchi, Kalouch, Samira, Yaqini, Khalid, Chlilek, Aziz, Sellami, Walid, Yedder, Soumaya Ben, Tonnelier, Alexandre, Hervé, Fabien, Halley, Guillaume, Frances, Jean-Luc, Moriconi, Mickael, Saoli, Mathieu, Garnero, Aude, Demory, Didier, Arnal, Jean Michel, Canoville, Bertrand, Daubin, Cédric, Brunet, Jennifer, Ghezala, Hassen Ben, Snouda, Salah, Ben, Chiekh Imen, Kaddour, Moez, Ouanes, Islem, Marzouk, Mahdi, Haniez, Françoise, Jaillet, Hélène, Maas, Henri, Andrivet, Pierre, Darné, Christian, Viau, François, Ghezala, Hassen Ben, Ouanes, Islem, Dangers, Laurence, Montlahuc, Claire, Perbet, Sébastien, Ouanes, Islem, Hamouda, Zeineb, Nakee, Sabrine, Ouanes-Besbes, Lamia, Meddeb, Khaoula, Khedher, Ahmed, Sma, Nesrine, Ayachi, Jihene, Khelfa, Messaouda, Fraj, Nesrine, Lakhal, Hend Ben, Hammed, Hedia, Boukadida, Raja, Hafsa, Hajer, Chouchene, Imed, Boussarsar, Mohamed, Ben, Braiek Dhouha, Ouanes-Besbes, Lamia, Benatti, Kaoutar, Dafir, A., Aissaoui, W., Elallame, W., Haddad, W., Cherkab, R., Elkettani, C., Barrou, L., Hamou, Zakaria Ait, Repessé, Xavier, Charron, Cyril, Aubry, Alix, Paternot, Alexis, Maizel, Julien, Slama, Michel, Vieillard-Baron, Antoine, Trifi, Ahlem, Abdellatif, Sami, Fatnassi, Meriem, Daly, Foued, Nasri, Rochdi, Ismail, Khaoula Ben, Lakhal, Salah Ben, Bazalgette, Florian, Daurat, Aurelien, Roger, Claire, Muller, Laurent, Doyen, Denis, Plattier, Rémi, Robert, Alexandre, Hyvernat, Hervé, Bernardin, Gilles, Jozwiak, Mathieu, Gimenez, Julia, Mercado, Pablo, Depret, François, Tilouch, Najla, Mater, Houda, Habiba, Ben Sik Ali, Jaoued, Oussama, Gharbi, Rim, Hassen, Mohamed Fekih, Elatrous, Souheil, Pasquier, Pierre, Vuillemin, Quentin, Schaal, Jean-Vivien, Martinez, Thibault, Duron, Sandrine, Trousselard, Marion, Schwartzbrod, Pierre-Eric, Baugnon, Thomas, Dupic, Laurent, Gout, Caroline Duracher, De Saint Blanquat, Laure, Séguret, Sylvie, Le Ficher, Gaelle, Orliaguet, Gilles, Hubert, Philippe, Bigé, Naïke, Leblanc, Guillaume, Briand, Raphael, Brousse, Lucas, Brunet, Valentine, Chatelain, Léonard, Prat, Dominique, Jacobs, Frédéric, Demars, Nadège, Hamzaoui, Olfa, Moneger, Guy, Sztrymf, Benjamin, Duburcq-Gury, Emilie, Satre-Buisson, Léa, Duburcq, Thibault, Poissy, Julien, Robriquet, Laurent, Jourdain, Merce, Sécheresse, Thierry, Miquet, Mattéo, Simond, Alexis, Usseglio, Pascal, Hamdaoui, Yamina, Boussarsar, Mohamed, Desailly, Victoire, Brun, Patrick, Iglesias, Pauline, Huet, Jérémie, Masseran, Clémence, Claudon, Antoine, Ebeyer, Clément, Truong, Thomas, Tesnière, Antoine, Mignon, Alexandre, Gaudry, Stéphane, Resiere, Dabor, Valentino, Ruddy, Fabre, Julien, Roze, Benoit, Ferge, Jean-Louis, Charbatier, Cyrille, Marie, Sabia, Scholsser, Michel, Aitsatou, Signate, Raad, Mathieu, Cabie, Andre, Mehdaoui, Hossein, Cousin, Clement, Rousseau, Christophe, Llitjos, Jean-François, Alby-Laurent, Fanny, Toubiana, Julie, Belaidouni, Nadia, Cherruault, Marlène, Tamburini, Jérome, Bouscary, Didier, Fert, Sarah, Delile, Eugénie, Besnier, Emmanuel, Coquerel, David, Nevière, Rémi, Richard, Vincent, Tamion, Fabienne, Wei, Chaojie, Louis, Huguette, Margaux, Schmitt, Eliane, Albuisson, Sophie, Orlowski, Kimmoun, Antoine, Riad, Zakaria, Coroir, Marine, Rémy, Bernard, Camille, Bombled, Joffre, Jeremie, Aegerter, Philippe, Ilic, Dejan, Ginet, Marc, Pignard, Caroline, Nguyen, Philippe, Mourey, Guillaume, Samain, Emmanuel, Pili-Floury, Sebastien, Jouffroy, Romain, Nicolas, Caill, Alvarez, Jean-Claude, Tomasso, Maraffi, Philippe, Pascal, Raphalen, Jean-Herlé, Frédéric, J. Baud, Vivien, Benoit, Pierre, Carli, Baud, Frederic, Fredj, Hana, Blel, Youssef, Brahmi, Nozha, Ghezala, Hassen Ben, Hanak, Anne-Sophie, Malissin, Isabelle, Poupon, Joel, Risede, Patricia, Chevillard, Lucie, Megarbane, Bruno, Barghouth, Manel, M’rad, Aymen, Hmida, Marwa Ben, Thabet, Hafedh, Liang, Hao, Callebert, Jacques, Lagard, Camille, Megarbane, Bruno, Habacha, Sahar, Chatbri, Bassem, Camillerapp, Christophe, Labat, Laurence, Soichot, Marion, Garçon, Pierre, Goury, Antoine, Kerdjana, Lamia, Voicu, Sebastian, Deye, Nicolas, Megarbane, Bruno, Armel, Anwar, Anas, Benqqa, Othman, Mezgui, Moumine, S., Kalouch, S., Yakini, K. K., Chlilek, A., Hajji, Ahmed, Louati, Assaad, Khaldi, Ammar, Borgi, Aida, Ghali, Nargess, Bouziri, Asma, Menif, Khaled, Ben, Jaballah Najla, Armel, Anwar, Brochon, Jeanne, Dumitrescu, Mihaela, Thévenot, Sarah, Saulnier, Jean-Pascal, Husseini, Khaled, Laland, Catherine, Cremniter, Julie, Bousseau, Anne, Castel, Olivier, Brémaud-Csizmadia, Cassandra, Diss, Margot, Portefaix, Aurélie, Berthiller, Julien, Gillet, Yves, Aoul, Nabil Tabet, Douah, Ali, Addou, Zakaria, Youbi, Houari, Moussati, Mohamed, Belhabiche, Kamel, Mir, Souad, Abada, Sanaa, Amel, Zerhouni, Aouffen, Nabil, Bouzit, Zina, Grati, Ahmed H., Dhonneur, Gilles F., Boussarsar, Mohamed, Lau, Nicolas, Mezhari, Ilham, Roucaud, Nicolas, Le Meur, Matthieu, Paulet, Rémi, Coudray, Jean-Michel, Ghomari, Wahiba Imène, Boumlik, Reda, Peigne, Vincent, Daban, Jean-Louis, Boutonnet, Mathieu, Lenoir, Bernard, Yassine, Hafiani, Mohamed, Cheikh Chaigar, Khalid, Allali, Ihssan, Moussaid, Said, Elyoussoufi, Said, Salmi, Jazia, Amira Ben, Fatima, Jaziri, Wafa, Skouri, Maha, Bennasr, Khaoula, Ben Abdelghni, Sami, Turki, Abdallah Taeib, B., Medhioub, Fatma Kaaniche, Rollet-Cohen, Virginie, Sachs, Philippe, Merchaoui, Zied, Renolleau, Sylvain, Oualha, Mehdi, Eloi, Maxime, Jean, Sandrine, Demoulin, Maryne, Valentin, Cécile, Guilbert, Julia, Walti, Hervé, Carbajal, Ricardo, Leger, Pierre-Louis, Karaca-Altintas, Yasemin, Botte, Astrid, Labreuche, Julien, Drumez, Elodie, Devos, Patrick, Bour, Franck, Leclerc, Francis, Ahmed, Ayari, khaled, Menif, Louati, Assaad, Aida, Borgi, Ammar, Khaldi, Narjess, Ghali, Ahmed, Hajji, Asma, Bouziri, Jaballah, Nejla Ben, Leger, Pierre-Louis, Pansiot, Julien, Besson, Valérie, Palmier, Bruno, Baud, Olivier, Cauli, Bruno, Charriaut-Marlangue, Christiane, Mansuy, Amélie, Michel, Fabrice, Le Bel, Stéphane, Boubnova, Julia, Ughetto, Fabrice, Ovaert, Caroline, Fouilloux, Virginie, Paut, Olivier, Jacquet-Lagrèze, Matthias, Tiebergien, Nicolas, Hanna, Najib, Evain, Jean-Noël, Baudin, Florent, Courtil-Teyssedre, Sonia, Bompard, Dominique, Lilot, Marc, Chardonal, Laurent, Fellahi, Jean-Luc, Claverie, Claire, Pouessel, Guillaume, Dorkenoo, Aimée, Renaudin, Jean-Marie, Eb, Mireille, Deschildre, Antoine, Leteurtre, Stéphane, Yassine, Hafiani, Kamal, Belkadi, Adil, Oboukhlik, Ouafa, Aalalam, Mouhamed, Moussaoui, Rachid, Charkab, Lahoucine, Barrou, Dachraoui, Fahmi, Nakkaa, Sabrine, Zaineb, Hammouda, Mlika, Dorra, Gloulou, Olfa, Boussarsar, Mohamed, Zelmat, Setti-Aouicha, Batouche, Djamila-Djahida, Chaffi, Belkacem, Mazour, Fatima, Benatta, Nadia, Fathallah, Ines, Aloui, Rafaa, Zoubli, Aymen, Kouraichi, Nadia, Fathallah, Ines, Kouraichi, N., Salem, Shireen, Vicaut, Eric, Megarbane, Bruno, Ambroise, David, Loriot, Anne-Marie, Bourgogne, Emmanuel, Megarbane, Bruno, Ghadhoune, Hatem, Jihene, Guissouma, Trabelsi, Insaf, Allouche, Hend, Brahmi, Habib, Samet, Mohamed, Ghord, Hatem El, Lebeau, Rodolphe, Laplanche, Jean-Louis, Benturquia, Nadia, Megarbane, Bruno, Blel, Youssef, M’rad, A., Essafi, Fatma, Benabderrahim, A., Jouffroy, Romain, Resiere, Dabor, Sanchez, Bruno, Inamo, Jocelyn, Megarbane, Bruno, Batouche, Djamila-Djahida, Zerhouni, Amel, Tabeliouna, Kheira, Negadi, Amine, Mentouri, Zahia, Le Gall, Fanny, Hanouz, Jean-Luc, Normand, Hervé, Khoury, Abdo, Sall, Fatimata Seydou, De Luca, Alban, Pugin, Aurore, Pazart, Lionel, Vidal, Chrystelle, Leroux, Franck, Khoury, Abdo, L’Her, Erwan, Marjanovic, Nicolas, Khoury, Abdo, Desmettre, Thibault, Lambert, Christophe, Ragey, Sophie Perinel, Baboi, Loredana, Bazin, Jean-Etienne, Koffel, Catherine, Dhonneur, Gilles, Bouzit, Zina, Bradai, Larbi, Ayed, Issam Ben, Aissa, Fethi, Haouache, Hakim, Marechal, Yoann, Biston, Patrick, Piagnerelli, Michael, Bortolotti, Perrine, Colling, Delphine, Colas, Vincent, Voisin, Benoit, Dewavrin, Florent, Onimus, Thierry, Girardie, Patrick, Saulnier, Fabienne, Urbina, Tomas, Nguyen, Yann, Druoton, Anne-Lise, Soudant, Marc, Barraud, Damien, Conrad, Marie, Cravoisy-Popovic, Aurélie, Nace, Lionel, Bollaert, Pierre-Edouard, Martin, Ruste, Bitker, Laurent, Richard, Jean-Christophe, Brossier, David, Goyer, Isabelle, Marquis, Christopher, Lampin, Marie, Duhamel, Alain, Béhal, Hélène, Dhaoui, Tahar, Godeffroy, Véronique, Devouge, Eve, Evrard, Dominique, Delepoulle, Florence, Racoussot, Sylvie, Grandbastien, Bruno, Lampin, Marie, Heilbronner, Claire, Roy, Emeline, Masson, Alexandra, Hadchouel-Duvergé, Alice, Rigourd, Virginie, Delacroix, Elise, Wroblewski, Isabelle, Pin, Isabelle, Ego, Anne, Payen, Valerie, Debillon, Thierry, Millet, Anne, Denot, Julien, Berthelot, Véronique, Thueux, Emilie, Reymond, Marie, De Larrard, Alexandra, Amblard, Alain, Leger, Pierre-Louis, Aoul, Nabil Tabet, Lemiale, Virginie, Oziel, Johanna, Brule, Noelle, Moreau, Anne-Sophie, Marhbène, Takoua, Sellami, Salma, Jamoussi, Amira, Ayed, Samia, Mhiri, Emna, Slim, Leila, Khelil, Jalila Ben, Besbes, Mohamed, Chawki, Sylvain, Hamdi, Aicha, Ciroldi, Magali, Cottereau, Alice, Obadia, Edouard, Zerbib, Yoann, Andrejak, Claire, Ricome, Sylvie, Dupont, Hervé, Baudin, François, Dureau, Pauline, Tanguy, Audrey, Arbelot, Charlotte, Ben, Hassen Kais, Charfeddine, Ahmed, Granger, Benjamin, Laporte, Lucile, Hermetet, Coralie, Regaieg, Kais, Khemakhem, Rim, Chelly, Hedi, Cheikh, Chaigar Mohammed, Mountij, Hamid, Rghioui, Kawtar, Haddad, Wafae, Cherkab, Rachid, Barrou, Houcine, Naima, Aitmouden, bennani, Othmani M., Regaieg, Kais, Douib, Ahmed, Samet, Amal, Cungi, Pierre-Julien, Nguyen, Cédric, Cotte, Jean, D’aranda, Erwan, Meaudre, Eric, Avaro, Jean-Phillipe, Slaoui, Mohamed Taoufik, Mokline, Amel, Rahmani, Imene, Laajili, Achraf, Amri, Helmi, Gharsallah, Lazheri, Gasri, Bahija, Tlaili, Sofiene, Hammouda, Rym, Messadi, Amen Allah, Sudden Death Expertise Center, AKIKI Study Group, DO-RE-MI-FA Group, ENCEPHALITICA Study Group, for the HYPER2S Investigators and REVA Research Network, for the Purpura Fulminans Study Group, GFRUP RMEF, REVA ECMOnet, REA-RAISIN Study Group, for the EurêClark Study Group, and Groupe Communication et Simulation en Pédiatrie

Published
2017
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22. Is brain angio-MRI useful in infective endocarditis management?

Author

Champey, J., Pavese, P., Bouvaist, H., Maillet, M., Kastler, A., Boussat, B., Francois, P., Schwebel, Carole, Bonadona, Agnès, Hamiflar, Rebecca, Vanzetto, Gerald, Dessertaine, Géraldine, Boignard, Aude, Augier, Caroline, Pierre, Isabelle, Brion, Jean-Paul, Wintenberger, Claire, Hincky-Vitrat, Virginie, Forestier, Emmanuel, and and the investigator groups

Published
2016
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23. The Marshall Grazing Incidence X-ray Spectrometer (MaGIXS)

Author

Champey, P. R., Winebarger, A. R., Kobayashi, K., Athiray, P. S., Hertz, E., Savage, S., Beabout, B., Beabout, D., Broadway, D., Bruccoleri, A. R., Cheimets, P., Davis, J., Duffy, J., Golub, L., Gregory, D. A., Griffith, C., Haight, H., Heilmann, R. K., Hogue, B., Hohl, J., Hyde, D., Kegley, J., Kolodzieczjak, J., Ramsey, B., Ranganathan, J., Robertson, B., Schattenburg, M. L., Speegle, C. O., Vigil, G., Walsh, Robert William, Weddenorf, B., and Wright, E.

Subjects
F530, Astronomy and Astrophysics, Instrumentation
Abstract

The Marshall Grazing Incidence X-ray Spectrometer (MaGIXS) is a sounding rocket instrument that flew on July 30, 2021 from the White Sands Missile Range, NM. The instrument was designed to address specific science questions that require differential emission measures of the solar soft X-ray spectrum from 6 – 25[Formula: see text]Å(0.5 – 2.1[Formula: see text]keV). MaGIXS comprises a Wolter-I telescope, a slit-jaw imaging system, an identical pair of grazing incidence paraboloid mirrors, a planar grating and a CCD camera. While implementing this design, some limitations were encountered in the production of the X-ray mirrors, which ended up as a catalyst for the development of a deterministic polishing approach and an improved meteorological technique that utilizes a computer-generated hologram (CGH). The opto-mechanical design approach addressed the need to have adjustable and highly repeatable interfaces to allow for the complex alignment between the optical sub-assemblies. The alignment techniques employed when mounting the mirrors and throughout instrument integration and end-to-end testing are discussed. Also presented are spatial resolution measurements of the end-to-end point-spread-function that were obtained during testing in the X-ray Cryogenic Facility (XRCF) at NASA Marshall Space Flight Center. Lastly, unresolved issues and off-nominal performance are discussed.

Published
2022

25. UV Spectro-Polarimetry with CLASP and CLASP2 Sounding Rocket Experiments

Author

Ishikawa, R, Kano, R, Winebarger, A, Mckenzie, D. E, Auchere, F, Trujillo, J, Narukage, N, Kobayashi, K, Rachmeler, L, Okamoto, T. J, Bando, T, Kubo, M, Katsukawa, Y, Ishikawa, S, Giono, G, Hara, H, Suematsu, Y, Yoshida, M, Tsuzuki, T, Song, D, Shinoda, K, Shimizu, T, Sakao, T, Tsuneta, S, Ichimoto, K, Goto, M, Cirtain, J, Champey, P, De Pontieu, B, Casini, R, Bethge, C, Sainz, R. Manso, Ramos, A. Asensio, Stepan, J, Belluzzi, L, Carlsson, M, Del Pino Aleman, T, and Bellester, E. Alsina

Subjects
Launch Vehicles And Launch Operations, Optics
Published
2017

27. Discovery of Ubiquitous Fast Propagating Intensity Disturbances by the Chromospheric Lyman Alpha Spectropolarimeter (CLASP)

Author

Kubo, M, Katsukawa, Y, Suematsu, Y, Kano, R, Bando, T, Narukage, N, Ishikawa, R, Hara, H, Giono, G, Tsuneta, S, Ishikawa, S, Shimizu, T, Sakao, T, Winebarger, A, Kobayashi, K, Cirtain, J, Champey, P, Auchere, F, Bueno, J. Trujillo, Ramos, A. Asensio, Stepan, J, Belluzzi, L, Sainz, R. Manso, De Pontieu, B, Ichimoto, K, Carlsson, M, Casini, R, and Goto, M

Subjects
Solar Physics
Abstract

High cadence observations by the slit-jaw (SJ) optics system of the sounding rocket experiment known as the Chromospheric Lyman Alpha SpectroPolarimeter (CLASP) reveal ubiquitous intensity disturbances that recurrently propagate in one or both of the chromosphere or transition region at a speed much higher than the sound speed. The CLASP/SJ instrument provides a time series of 2D images taken with broadband filters centered on the Ly(alpha) line at a 0.6 s cadence. The fast propagating intensity disturbances are detected in the quiet Sun and in an active region, and at least 20 events are clearly detected in the field of view of 527′′ x 527′′ during the 5-minute observing time. The apparent speeds of the intensity disturbances range from 150 to 350 km/s, and they are comparable to the local Alfven speed in the transition region. The intensity disturbances tend to propagate along bright elongated structures away from areas with strong photospheric magnetic fields. This suggests that the observed propagating intensity disturbances are related to the magnetic canopy structures. The maximum distance traveled by the intensity disturbances is of about 10′′, and the widths are a few arcseconds, which is almost determined by the pixel size of 1.′′03. The timescale of each intensity pulse is shorter than 30 s. One possible explanation of the fast propagating intensity disturbances observed by CLASP is magneto-hydrodynamic fast mode waves.

Published
2016

28. Performance Characterization of UV Science Cameras Developed for the Chromospheric Lyman-Alpha Spectro-Polarimeter

Author

Champey, P, Kobayashi, K, Winebarger, A, Cirtain, J, Hyde, D, Robertson, B, Beabout, D, Beabout, B, and Stewart, M

Subjects
Solar Physics
Abstract

The NASA Marshall Space Flight Center (MSFC) has developed a science camera suitable for sub-orbital missions for observations in the UV, EUV and soft X-ray. Six cameras will be built and tested for flight with the Chromospheric Lyman-Alpha Spectro-Polarimeter (CLASP), a joint National Astronomical Observatory of Japan (NAOJ) and MSFC sounding rocket mission. The goal of the CLASP mission is to observe the scattering polarization in Lyman-alpha and to detect the Hanle effect in the line core. Due to the nature of Lyman-alpha polarization in the chromosphere, strict measurement sensitivity requirements are imposed on the CLASP polarimeter and spectrograph systems; science requirements for polarization measurements of Q/I and U/I are 0.1 percent in the line core. CLASP is a dual-beam spectro-polarimeter, which uses a continuously rotating waveplate as a polarization modulator, while the waveplate motor driver outputs trigger pulses to synchronize the exposures. The CCDs are operated in frame-transfer mode; the trigger pulse initiates the frame transfer, effectively ending the ongoing exposure and starting the next. The strict requirement of 0.1 percent polarization accuracy is met by using frame-transfer cameras to maximize the duty cycle in order to minimize photon noise. Coating the e2v CCD57-10 512x512 detectors with Lumogen-E coating allows for a relatively high (30 percent) quantum efficiency at the Lyman-alpha line. The CLASP cameras were designed to operate with 10 e-/pixel/second dark current, 25 e- read noise, a gain of 2.0 +/- 0.5 and 1.0 percent residual non-linearity. We present the results of the performance characterization study performed on the CLASP prototype camera; dark current, read noise, camera gain and residual non-linearity.

Published
2014

29. Upgrading Wolter Imagers for X-Ray Diagnostics in the Z Pulsed-Power Facility at Sandia National Laboratories.

Author

Vogel, J, primary, Kozioziemski, B, additional, Walton, C, additional, Ayers, J, additional, Bell, Perry, additional, Bradley, David, additional, Descalle, M-A, additional, Hau-Riege, S, additional, Fein, Jeffrey, additional, Ampleford, David, additional, Ball, Christopher, additional, Gard, Paul, additional, Jones, Michael, additional, Maurer, Andrew, additional, Wu, Ming, additional, Champey, P, additional, Davis, J, additional, Griffith, C, additional, Kolodziejczak, J, additional, Ramsey, B, additional, Sanchez, J, additional, Speegle, C, additional, Young, M, additional, Kilaru, K, additional, Roberts, O, additional, Ames, A, additional, Bruni, R, additional, Romaine, S, additional, and Sethares, L, additional

Published
2020
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30. CLASP Constraints on the Magnetization and Geometrical Complexity of the Chromosphere-Corona Transition Region

Author

Trujillo, Bueno J., Stepan, J., Belluzzi, L., Asensio, Ramos A., Sainz, R. Manso, del, Pino Aleman T., Casini, R., Ishikawa, R., Winebarger, A., Auchere, F., Kobayashi, K., Giono, G., Cirtain, J., Champey, P., De, Pontieu B., Carlsson, M., Kano, Ryouhei, Narukage, Noriyuki, Bando, Takamasa, Katsukawa, Yukio, Kubo, Masahito, Ishikawa, Shin-nosuke, Hara, Hirohisa, Suematsu, Yoshinori, Shimizu, Toshifumi, Sakao, Taro, Tsuneta, Saku, and Ichimoto, Kiyoshi

Subjects
Hanle effect, Photon, FOS: Physical sciences, 02 engineering and technology, Astrophysics, magnetic fields, 7. Clean energy, 01 natural sciences, 0103 physical sciences, Radiative transfer, Astrophysics::Solar and Stellar Astrophysics, Sun: transition region, 010303 astronomy & astrophysics, Chromosphere, Solar and Stellar Astrophysics (astro-ph.SR), Physics, Statistical ensemble, polarization, Linear polarization, Scattering, Astronomy and Astrophysics, Sun: UV radiation, 021001 nanoscience & nanotechnology, Polarization (waves), Computational physics, Astrophysics - Solar and Stellar Astrophysics, Space and Planetary Science, 0210 nano-technology
Abstract

The Chromospheric Lyman-Alpha Spectro-Polarimeter (CLASP) is a suborbital rocket experiment that on 3rd September 2015 measured the linear polarization produced by scattering processes in the hydrogen Ly-$\alpha$ line of the solar disk radiation, whose line-center photons stem from the chromosphere-corona transition region (TR). These unprecedented spectropolarimetric observations revealed an interesting surprise, namely that there is practically no center-to-limb variation (CLV) in the $Q/I$ line-center signals. Using an analytical model, we first show that the geometrical complexity of the corrugated surface that delineates the TR has a crucial impact on the CLV of the $Q/I$ and $U/I$ line-center signals. Secondly, we introduce a statistical description of the solar atmosphere based on a three-dimensional (3D) model derived from a state-of-the-art radiation magneto-hydrodynamic simulation. Each realization of the statistical ensemble is a 3D model characterized by a given degree of magnetization and corrugation of the TR, and for each such realization we solve the full 3D radiative transfer problem taking into account the impact of the CLASP instrument degradation on the calculated polarization signals. Finally, we apply the statistical inference method presented in a previous paper to show that the TR of the 3D model that produces the best agreement with the CLASP observations has a relatively weak magnetic field and a relatively high degree of corrugation. We emphasize that a suitable way to validate or refute numerical models of the upper solar chromosphere is by confronting calculations and observations of the scattering polarization in ultraviolet lines sensitive to the Hanle effect., Comment: Accepted for publication in The Astrophysical Journal Letters

Published
2018
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32. FOXSI-4: the high resolution focusing X-ray rocket payload to observe a solar flare

Author

Siegmund, Oswald H., Buitrago-Casas, Juan Camilo, Vievering, Juliana, Musset, Sophie, Glesener, Lindsay, Athiray, P.S., Baumgartner, Wayne, Bongiorno, Stephen, Champey, Patrick, Christe, Steven, Courtade, Sasha, Dalton, Gregory, Duncan, Jessie, Gilchrist, Kelsey, Ishikawa, Shin-nosuke, Jhabvala, Christine, Kanniainen, Hunter, Krucker, Säm, Gregory, Kyle, Martinez Oliveros, Juan Carlos, McCracken, Jeff, Mitsuishi, Ikuyuki, Narukage, Noriyuki, Pantazides, Athanasios, Peretz, Eliad, Perez-Piel, Savannah, Ramanayaka, Aruna, Ramsey, Brian, Ryan, Danny, Savage, Sabrina, Takahashi, Tadayuki, Watanabe, Shin, Winebarger, Amy, and Zhang, Yixian

Published
2021
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33. Indication of the Hanle Effect by Comparing the Scattering Polarization Observed by CLASP in the Lyα and Si III 120.65. nm Lines

Author

Trujillo, Bueno J., Uitenbroek, H., Giono, Gabriel, Winebarger, Amy, Cirtain, J., Champey, P., Auchere, F., Stepan, J., Belluzzi, L., Asensio, Ramos A., Sainz, R. Manso, De, Pontieu B., Carlsson, M., Casini, R., Ishikawa, Ryoko, Kubo, Masahito, Tsuneta, Saku, Goto, Motoshi, Kano, Ryouhei, Narukage, Noriyuki, Bando, Takamasa, Katsukawa, Yukio, Ishikawa, Shin-nosuke, Suematsu, Yoshinori, Hara, Hirohisa, Shimizu, Toshifumi, Sakao, Taro, Kobayashi, Ken, and Ichimoto, Kiyoshi

Subjects
Physics, Hanle effect, polarization, Scattering, Sun: chromosphere, instrumentation: polarimeters, Astronomy and Astrophysics, Polarization (waves), 01 natural sciences, 010309 optics, Space and Planetary Science, 0103 physical sciences, Astrophysics::Solar and Stellar Astrophysics, Atomic physics, Sun: transition region, 010303 astronomy & astrophysics, Sun: magnetic fields
Abstract

著者人数: 29名, Accepted: 2017-04-04, 資料番号: SA1170029000

Published
2017

34. Discovery of Scattering Polarization in the Hydrogen Lyα Line of the Solar Disk Radiation

Author

Trujillo, Bueno J., Winebarger, A., Auchere, F., Kobayashi, K., Giono, G., Belluzzi, L., Stepan, J., Asensio, Ramos A., Sainz, R. Manso, Champey, P., Cirtain, J., De, Pontieu B., Casini, R., Carlsson, M., Kano, Ryouhei, Narukage, Noriyuki, Ishikawa, Ryoko, Bando, Takamasa, Katsukawa, Yukio, Kubo, Masahito, Ishikawa, Shin-nosuke, Hara, Hirohisa, Suematsu, Yoshinori, Shimizu, Toshifumi, Sakao, Taro, Tsuneta, Saku, Ichimoto, Kiyoshi, and Goto, Motoshi

Subjects
Hanle effect, Physics, polarization, Linear polarization, Scattering, Sun: chromosphere, Astronomy and Astrophysics, Lyman-alpha line, Astrophysics, magnetic fields, Polarization (waves), Sun: UV radiation, 01 natural sciences, Spectral line, Magnetic field, 010309 optics, Astrophysics - Solar and Stellar Astrophysics, Space and Planetary Science, 0103 physical sciences, Physics::Space Physics, Astrophysics::Solar and Stellar Astrophysics, Astrophysics::Earth and Planetary Astrophysics, Sun: transition region, 010303 astronomy & astrophysics, Chromosphere
Abstract

著者人数: 28名, Accepted: 2017-03-26, 資料番号: SA1170036000

Published
2017

35. A Statistical Inference Method for Interpreting the CLASP Observations

Author

Štěpán, J., primary, Bueno, J. Trujillo, additional, Belluzzi, L., additional, Ramos, A. Asensio, additional, Sainz, R. Manso, additional, Alemán, T. del Pino, additional, Casini, R., additional, Kano, R., additional, Winebarger, A., additional, Auchère, F., additional, Ishikawa, R., additional, Narukage, N., additional, Kobayashi, K., additional, Bando, T., additional, Katsukawa, Y., additional, Kubo, M., additional, Ishikawa, S., additional, Giono, G., additional, Hara, H., additional, Suematsu, Y., additional, Shimizu, T., additional, Sakao, T., additional, Tsuneta, S., additional, Ichimoto, K., additional, Cirtain, J., additional, Champey, P., additional, Pontieu, B. De, additional, and Carlsson, M., additional

Published
2018
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36. Indication of the Hanle Effect by Comparing the Scattering Polarization Observed by CLASP in the Lyα and Si III 120.65. nm Lines

Author

Ishikawa, Ryoko, Trujillo Bueno, J., Uitenbroek, H., Kubo, Masahito, Tsuneta, Saku, Goto, Motoshi, Kano, Ryouhei, Narukage, Noriyuki, Bando, Takamasa, Katsukawa, Yukio, Ishikawa, Shin-nosuke, Giono, Gabriel, Suematsu, Yoshinori, Hara, Hirohisa, Shimizu, Toshifumi, Sakao, Taro, Winebarger, Amy, Kobayashi, Ken, Cirtain, J., Champey, P., Auchere, F., Stepan, J., Belluzzi, L., Asensio Ramos, A., Sainz, R. Manso, De Pontieu, B., Ichimoto, Kiyoshi, Carlsson, M., Casini, R., 石川, 遼子, 久保, 雅仁, 常田, 佐久, 後藤, 基志, 鹿野, 良平, 成影, 典之, 坂東, 貴政, 勝川, 行雄, 石川, 真之介, 末松, 芳法, 原, 弘久, 清水, 敏文, 坂尾, 太郎, 小林, 研, 一本, 潔, Ishikawa, Ryoko, Trujillo Bueno, J., Uitenbroek, H., Kubo, Masahito, Tsuneta, Saku, Goto, Motoshi, Kano, Ryouhei, Narukage, Noriyuki, Bando, Takamasa, Katsukawa, Yukio, Ishikawa, Shin-nosuke, Giono, Gabriel, Suematsu, Yoshinori, Hara, Hirohisa, Shimizu, Toshifumi, Sakao, Taro, Winebarger, Amy, Kobayashi, Ken, Cirtain, J., Champey, P., Auchere, F., Stepan, J., Belluzzi, L., Asensio Ramos, A., Sainz, R. Manso, De Pontieu, B., Ichimoto, Kiyoshi, Carlsson, M., Casini, R., 石川, 遼子, 久保, 雅仁, 常田, 佐久, 後藤, 基志, 鹿野, 良平, 成影, 典之, 坂東, 貴政, 勝川, 行雄, 石川, 真之介, 末松, 芳法, 原, 弘久, 清水, 敏文, 坂尾, 太郎, 小林, 研, and 一本, 潔

Abstract

著者人数: 29名, Accepted: 2017-04-04

Published
2017

37. Discovery of Scattering Polarization in the Hydrogen Lyα Line of the Solar Disk Radiation

Author

Kano, Ryouhei, Trujillo Bueno, J., Winebarger, A., Auchere, F., Narukage, Noriyuki, Ishikawa, Ryoko, Kobayashi, K., Bando, Takamasa, Katsukawa, Yukio, Kubo, Masahito, Ishikawa, Shin-nosuke, Giono, G., Hara, Hirohisa, Suematsu, Yoshinori, Shimizu, Toshifumi, Sakao, Taro, Tsuneta, Saku, Ichimoto, Kiyoshi, Goto, Motoshi, Belluzzi, L., Stepan, J., Asensio Ramos, A., Sainz, R. Manso, Champey, P., Cirtain, J., De Pontieu, B., Casini, R., Carlsson, M., 鹿野, 良平, 成影, 典之, 石川, 遼子, 坂東, 貴政, 勝川, 行雄, 久保, 雅仁, 石川, 真之介, 原, 弘久, 末松, 芳法, 清水, 敏文, 坂尾, 太郎, 常田, 佐久, 一本, 潔, 後藤, 基志, Kano, Ryouhei, Trujillo Bueno, J., Winebarger, A., Auchere, F., Narukage, Noriyuki, Ishikawa, Ryoko, Kobayashi, K., Bando, Takamasa, Katsukawa, Yukio, Kubo, Masahito, Ishikawa, Shin-nosuke, Giono, G., Hara, Hirohisa, Suematsu, Yoshinori, Shimizu, Toshifumi, Sakao, Taro, Tsuneta, Saku, Ichimoto, Kiyoshi, Goto, Motoshi, Belluzzi, L., Stepan, J., Asensio Ramos, A., Sainz, R. Manso, Champey, P., Cirtain, J., De Pontieu, B., Casini, R., Carlsson, M., 鹿野, 良平, 成影, 典之, 石川, 遼子, 坂東, 貴政, 勝川, 行雄, 久保, 雅仁, 石川, 真之介, 原, 弘久, 末松, 芳法, 清水, 敏文, 坂尾, 太郎, 常田, 佐久, 一本, 潔, and 後藤, 基志

Abstract

著者人数: 28名, Accepted: 2017-03-26

Published
2017

38. Polarization Calibration of the Chromospheric Lyman-Alpha SpectroPolarimeter for a 0.1% Polarization Sensitivity in the VUV Range. Part II: In-Flight Calibration

Author

Giono, Gabriel, Ishikawa, Ryoko, Narukage, Noriyuki, Kano, Ryouhei, Katsukawa, Yukio, Kubo, Masahito, Ishikawa, Shin-nosuke, Bando, Takamasa, Hara, Hirohisa, Suematsu, Yoshinori, Winebarger, Amy, Kobayashi, Ken, Auchere, F., Trujillo Bueno, J., Tsuneta, Saku, Shimizu, Toshifumi, Sakao, Taro, Cirtain, J., Champey, P., Asensio Ramos, A., Stepan, J., Belluzzi, L., Manso Sainz, R., De Pontieu, B., Ichimoto, Kiyoshi, Carlsson, M., Casini, R., Goto, Motoshi, 石川, 遼子, 成影, 典之, 鹿野, 良平, 勝川, 行雄, 久保, 雅仁, 石川, 真之介, 坂東, 貴政, 原, 弘久, 末松, 芳法, 小林, 研, 常田, 佐久, 清水, 敏文, 坂尾, 太郎, 一本, 潔, 後藤, 基志, Giono, Gabriel, Ishikawa, Ryoko, Narukage, Noriyuki, Kano, Ryouhei, Katsukawa, Yukio, Kubo, Masahito, Ishikawa, Shin-nosuke, Bando, Takamasa, Hara, Hirohisa, Suematsu, Yoshinori, Winebarger, Amy, Kobayashi, Ken, Auchere, F., Trujillo Bueno, J., Tsuneta, Saku, Shimizu, Toshifumi, Sakao, Taro, Cirtain, J., Champey, P., Asensio Ramos, A., Stepan, J., Belluzzi, L., Manso Sainz, R., De Pontieu, B., Ichimoto, Kiyoshi, Carlsson, M., Casini, R., Goto, Motoshi, 石川, 遼子, 成影, 典之, 鹿野, 良平, 勝川, 行雄, 久保, 雅仁, 石川, 真之介, 坂東, 貴政, 原, 弘久, 末松, 芳法, 小林, 研, 常田, 佐久, 清水, 敏文, 坂尾, 太郎, 一本, 潔, and 後藤, 基志

Abstract

著者人数: 28名

Published
2017

39. DISCOVERY OF UBIQUITOUS FAST-PROPAGATING INTENSITY DISTURBANCES BY THE CHROMOSPHERIC LYMAN ALPHA SPECTROPOLARIMETER (CLASP)

Author

Kubo, Masahito, Katsukawa, Yukio, Suematsu, Yoshinori, Kano, Ryouhei, Bando, Takamasa, Narukage, Noriyuki, Ishikawa, Ryoko, Hara, Hirohisa, Giono, Gabriel, Tsuneta, Saku, Ishikawa, Shin-nosuke, Shimizu, Toshifumi, Sakao, Taro, Winebarger, Amy, Kobayashi, Ken, Cirtain, J., Champey, P., Auchere, F., Trujillo Bueno, J., Asensio Ramos, A., Stepan, J., Belluzzi, L., Manso Sainz, R., De Pontieu, B., Ichimoto, Kiyoshi, Carlsson, M., Casini, R., Goto, Motoshi, 久保, 雅仁, 勝川, 行雄, 末松, 芳法, 鹿野, 良平, 坂東, 貴政, 成影, 典之, 石川, 遼子, 原, 弘久, 常田, 佐久, 石川, 真之介, 清水, 敏文, 坂尾, 太郎, 小林, 研, 一本, 潔, 後藤, 基志, Kubo, Masahito, Katsukawa, Yukio, Suematsu, Yoshinori, Kano, Ryouhei, Bando, Takamasa, Narukage, Noriyuki, Ishikawa, Ryoko, Hara, Hirohisa, Giono, Gabriel, Tsuneta, Saku, Ishikawa, Shin-nosuke, Shimizu, Toshifumi, Sakao, Taro, Winebarger, Amy, Kobayashi, Ken, Cirtain, J., Champey, P., Auchere, F., Trujillo Bueno, J., Asensio Ramos, A., Stepan, J., Belluzzi, L., Manso Sainz, R., De Pontieu, B., Ichimoto, Kiyoshi, Carlsson, M., Casini, R., Goto, Motoshi, 久保, 雅仁, 勝川, 行雄, 末松, 芳法, 鹿野, 良平, 坂東, 貴政, 成影, 典之, 石川, 遼子, 原, 弘久, 常田, 佐久, 石川, 真之介, 清水, 敏文, 坂尾, 太郎, 小林, 研, 一本, 潔, and 後藤, 基志

Abstract

著者人数: 28名, Accepted: 2016-08-30

Published
2017

40. Indication of the Hanle Effect by Comparing the Scattering Polarization Observed by CLASP in the Lyαand Si iii 120.65 nm Lines

Author

Ishikawa, R., primary, Bueno, J. Trujillo, additional, Uitenbroek, H., additional, Kubo, M., additional, Tsuneta, S., additional, Goto, M., additional, Kano, R., additional, Narukage, N., additional, Bando, T., additional, Katsukawa, Y., additional, Ishikawa, S., additional, Giono, G., additional, Suematsu, Y., additional, Hara, H., additional, Shimizu, T., additional, Sakao, T., additional, Winebarger, A., additional, Kobayashi, K., additional, Cirtain, J., additional, Champey, P., additional, Auchère, F., additional, Štěpán, J., additional, Belluzzi, L., additional, Ramos, A. Asensio, additional, Sainz, R. Manso, additional, De Pontieu, B., additional, Ichimoto, K., additional, Carlsson, M., additional, and Casini, R., additional

Published
2017
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41. Discovery of Scattering Polarization in the Hydrogen LyαLine of the Solar Disk Radiation

Author

Kano, R., primary, Bueno, J. Trujillo, additional, Winebarger, A., additional, Auchère, F., additional, Narukage, N., additional, Ishikawa, R., additional, Kobayashi, K., additional, Bando, T., additional, Katsukawa, Y., additional, Kubo, M., additional, Ishikawa, S., additional, Giono, G., additional, Hara, H., additional, Suematsu, Y., additional, Shimizu, T., additional, Sakao, T., additional, Tsuneta, S., additional, Ichimoto, K., additional, Goto, M., additional, Belluzzi, L., additional, Štěpán, J., additional, Ramos, A. Asensio, additional, Sainz, R. Manso, additional, Champey, P., additional, Cirtain, J., additional, Pontieu, B. De, additional, Casini, R., additional, and Carlsson, M., additional

Published
2017
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42. DISCOVERY OF UBIQUITOUS FAST-PROPAGATING INTENSITY DISTURBANCES BY THE CHROMOSPHERIC LYMAN ALPHA SPECTROPOLARIMETER (CLASP)

Author

Kubo, M., primary, Katsukawa, Y., additional, Suematsu, Y., additional, Kano, R., additional, Bando, T., additional, Narukage, N., additional, Ishikawa, R., additional, Hara, H., additional, Giono, G., additional, Tsuneta, S., additional, Ishikawa, S., additional, Shimizu, T., additional, Sakao, T., additional, Winebarger, A., additional, Kobayashi, K., additional, Cirtain, J., additional, Champey, P., additional, Auchère, F., additional, Bueno, J. Trujillo, additional, Ramos, A. Asensio, additional, Štěpán, J., additional, Belluzzi, L., additional, Sainz, R. Manso, additional, Pontieu, B. De, additional, Ichimoto, K., additional, Carlsson, M., additional, Casini, R., additional, and Goto, M., additional

Published
2016
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44. QUIET-SUN NETWORK BRIGHT POINT PHENOMENA WITH SIGMOIDAL SIGNATURES

Author

Massachusetts Institute of Technology. Department of Physics, Oluseyi, Hakeem, Chesny, D. L., Orange, N. Brice, Champey, P. R., Massachusetts Institute of Technology. Department of Physics, Oluseyi, Hakeem, Chesny, D. L., Orange, N. Brice, and Champey, P. R.

Abstract

Ubiquitous solar atmospheric coronal and transition region bright points (BPs) are compact features overlying strong concentrations of magnetic flux. Here, we utilize high-cadence observations from the Atmospheric Imaging Assembly on board the Solar Dynamics Observatory to provide the first observations of extreme ultraviolet quiet-Sun (QS) network BP activity associated with sigmoidal structuring. To our knowledge, this previously unresolved fine structure has never been associated with such small-scale QS events. This QS event precedes a bi-directional jet in a compact, low-energy, and low-temperature environment, where evidence is found in support of the typical fan-spine magnetic field topology. As in active regions and micro-sigmoids, the sigmoidal arcade is likely formed via tether-cutting reconnection and precedes peak intensity enhancements and eruptive activity. Our QS BP sigmoid provides a new class of small-scale structuring exhibiting self-organized criticality that highlights a multi-scaled self-similarity between large-scale, high-temperature coronal fields and the small-scale, lower-temperature QS network. Finally, our QS BP sigmoid elevates arguments for coronal heating contributions from cooler atmospheric layers, as this class of structure may provide evidence favoring mass, energy, and helicity injections into the heliosphere.

Published
2016

45. DISCOVERY OF UBIQUITOUS FAST-PROPAGATING INTENSITY DISTURBANCES BY THE CHROMOSPHERIC LYMAN ALPHA SPECTROPOLARIMETER (CLASP)

Author

Giono, Gabriel, Winebarger, Amy, Cirtain, J., Champey, P., Auchere, F., Trujillo, Bueno J., Asensio, Ramos A., Stepan, J., Belluzzi, L., Manso, Sainz R., De, Pontieu B., Carlsson, M., Casini, R., Kubo, Masahito, Katsukawa, Yukio, Suematsu, Yoshinori, Kano, Ryouhei, Bando, Takamasa, Narukage, Noriyuki, Ishikawa, Ryoko, Hara, Hirohisa, Tsuneta, Saku, Ishikawa, Shin-nosuke, Shimizu, Toshifumi, Sakao, Taro, Kobayashi, Ken, Ichimoto, Kiyoshi, and Goto, Motoshi

Subjects
Physics, Photosphere, Sounding rocket, 010504 meteorology & atmospheric sciences, Sun: chromosphere, Astronomy, Astronomy and Astrophysics, Magnetic reconnection, Astrophysics, 01 natural sciences, Nanoflares, Intensity (physics), Space and Planetary Science, magnetic reconnection, 0103 physical sciences, waves, Sun: transition region, Magnetohydrodynamics, 010303 astronomy & astrophysics, Chromosphere, 0105 earth and related environmental sciences, Line (formation)
Abstract

著者人数: 28名, Accepted: 2016-08-30, 資料番号: SA1160236000

Published
2016

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