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5 results on '"Renata S. Cumbee"'

1. Correcting Gain Drift in TES Detectors for Future X-Ray Satellite Missions

Author

Stephen J. Smith, Michael C. Witthoeft, Joseph S. Adams, Simon R. Bandler, Sophie Beaumont, James A. Chervenak, Renata S. Cumbee, Megan E. Eckart, Fred M. Finkbeiner, Sam V. Hull, Richard L. Kelley, Caroline A. Kilbourne, Maurice A. Leutenegger, Frederick S. Porter, Kazuhiro Sakai, Nicholas A. Wakeham, and Edward J. Wassell

Subjects
Electrical and Electronic Engineering, Condensed Matter Physics, Electronic, Optical and Magnetic Materials
Published
2023
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2. Charge Exchange, from the Sky to the Laboratory: A Method to Determine State-Selective Cross-Sections for Improved Modeling

Author

Gabriele L. Betancourt-Martinez, Renata S Cumbee, and Maurice A Leutenegger

Subjects
Physics Of Elementary Particles And Fields
Abstract

Charge exchange (CX) is a semi-resonant recombination process that can lead to spectral line emission in the X-ray band. It occurs in nearly any environment where hot plasma and cold gas interact: in the solar system, in comets and planetary atmospheres, and likely astrophysically, in, for example, supernova remnants and galaxy clusters. It also contributes to the soft X-ray background. Accurate spectral modeling of CX is thus critical to properly interpreting our astrophysical observations, but the commonly used CX models in popular spectral fitting packages often rely on scaling equations and may not accurately describe observations or laboratory measurements. This paper introduces a method that can be applied to high-resolution CX spectra to directly extract state-selective CX cross-sections for electron capture, a key parameter for properly simulating the resulting CX spectrum.

Published
2020
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3. Status of resolve instrument onboard x-ray imaging and spectroscopy mission (XRISM)

Author

Yoshitaka Ishisaki, Richard L. Kelley, Hisamitsu Awaki, Jesus C. Balleza, Kim R. Barnstable, Thomas G. Bialas, Rozenn Boissay-Malaquin, Gregory V. Brown, Edgar R. Canavan, Renata S. Cumbee, Timothy M. Carnahan, Meng P. Chiao, Brian J. Comber, Elisa Costantini, Jan-Willem A. den Herder, Johannes Dercksen, Cor P. de Vries, Michael J. DiPirro, Megan E. Eckart, Yuichiro Ezoe, Carlo Ferrigno, Ryuichi Fujimoto, Nathalie Gorter, Steven M. Graham, Martin Grim, Leslie S. Hartz, Ryota Hayakawa, Takayuki Hayashi, Natalie Hell, Akio Hoshino, Yuto Ichinohe, Manabu Ishida, Kumi Ishikawa, Bryan L. James, Steven J. Kenyon, Caroline A. Kilbourne, Mark O. Kimball, Shunji Kitamoto, Maurice A. Leutenegger, Yoshitomo Maeda, Dan McCammon, Joseph J. Miko, Misaki Mizumoto, Takashi Okajima, Atsushi Okamoto, Stephane Paltani, Frederick S. Porter, Kosuke Sato, Toshiki Sato, Makoto Sawada, Keisuke Shinozaki, Russell Shipman, Peter J. Shirron, Gary A. Sneiderman, Yang Soong, Richard Szymkiewicz, Andrew E. Szymkowiak, Yoh Takei, Keisuke Tamura, Masahiro Tsujimoto, Yuusuke Uchida, Stephen Wasserzug, Michael C. Witthoeft, Rob Wolfs, Shinya Yamada, and Susumu Yasuda

Published
2022
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5. Correlations between Lag, Duration, Peak Luminosity, Hardness, and Asymmetry in Long GRB Pulses

Author

Jon Hakkila, Renata S. Cumbee, Charles Meegan, Chryssa Kouveliotou, and Neil Gehrels

Subjects
Physics, High Energy Astrophysical Phenomena (astro-ph.HE), Cosmology and Nongalactic Astrophysics (astro-ph.CO), Lag, media_common.quotation_subject, Astrophysics::High Energy Astrophysical Phenomena, Flux, Pulse duration, FOS: Physical sciences, Astrophysics, Asymmetry, Redshift, Luminosity, Pulse (physics), Gamma-ray burst, Astrophysics - High Energy Astrophysical Phenomena, media_common, Astrophysics - Cosmology and Nongalactic Astrophysics
Abstract

Continued study of the BATSE catalog verifies previously-identified correlations between pulse lag and pulse duration and corresponding anti-correlations between both properties and pulse peak flux for a large sample of Long GRB pulses; the study also finds correlations between pulse peak lags, pulse asymmetry, and pulse hardness. These correlations apparently can be used to delineate Long GRBs from Short ones. Correlated pulse properties represent constraints that can be used to guide theoretical modeling, whereas bulk prompt emission properties appear to be constructed by combining and smearing out pulse characteristics in ways that potentially lose valuable information., 6 pages, 10 figures, 2 tables, to appear in the proceedings of the Sixth Huntsville Gamma-Ray Burst Conference 2008, edited by C.A. Meegan, N. Gehrels, and C. Kouveliotou

Published
2009

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