7 results on '"Aguirre, J. E."'
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2. The nature of the [C ii] emission in dusty star-forming galaxies from the SPT survey
- Author
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Gullberg, B., primary, De Breuck, C., additional, Vieira, J. D., additional, Weiß, A., additional, Aguirre, J. E., additional, Aravena, M., additional, Béthermin, M., additional, Bradford, C. M., additional, Bothwell, M. S., additional, Carlstrom, J. E., additional, Chapman, S. C., additional, Fassnacht, C. D., additional, Gonzalez, A. H., additional, Greve, T. R., additional, Hezaveh, Y., additional, Holzapfel, W. L., additional, Husband, K., additional, Ma, J., additional, Malkan, M., additional, Marrone, D. P., additional, Menten, K., additional, Murphy, E. J., additional, Reichardt, C. L., additional, Spilker, J. S., additional, Stark, A. A., additional, Strandet, M., additional, and Welikala, N., additional
- Published
- 2015
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3. H-ATLAS: estimating redshifts of Herschel sources from sub-mm fluxes
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Pearson, E. A., primary, Eales, S., additional, Dunne, L., additional, Gonzalez-Nuevo, J., additional, Maddox, S., additional, Aguirre, J. E., additional, Baes, M., additional, Baker, A. J., additional, Bourne, N., additional, Bradford, C. M., additional, Clark, C. J. R., additional, Cooray, A., additional, Dariush, A., additional, Zotti, G. De, additional, Dye, S., additional, Frayer, D., additional, Gomez, H. L., additional, Harris, A. I., additional, Hopwood, R., additional, Ibar, E., additional, Ivison, R. J., additional, Jarvis, M., additional, Krips, M., additional, Lapi, A., additional, Lupu, R. E., additional, Michałowski, M. J., additional, Rosenman, M., additional, Scott, D., additional, Valiante, E., additional, Valtchanov, I., additional, Werf, P. van der, additional, and Vieira, J. D., additional
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- 2013
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4. Large gas reservoirs and free–free emission in two lensed star-forming galaxies at z = 2.7
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Aravena, M., primary, Murphy, E. J., additional, Aguirre, J. E., additional, Ashby, M. L. N., additional, Benson, B. A., additional, Bothwell, M., additional, Brodwin, M., additional, Carlstrom, J. E., additional, Chapman, S. C., additional, Crawford, T. M., additional, de Breuck, C., additional, Fassnacht, C. D., additional, Gonzalez, A. H., additional, Greve, T. R., additional, Gullberg, B., additional, Hezaveh, Y., additional, Holder, G. P., additional, Holzapfel, W. L., additional, Keisler, R., additional, Malkan, M., additional, Marrone, D. P., additional, McIntyre, V., additional, Reichardt, C. L., additional, Sharon, K., additional, Spilker, J. S., additional, Stalder, B., additional, Stark, A. A., additional, Vieira, J. D., additional, and Weiß, A., additional
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- 2013
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5. Detection of an ultrabright submillimetre galaxy in the Subaru/XMM-Newton Deep Field using AzTEC/ASTE
- Author
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Ikarashi, S., primary, Kohno, K., additional, Aguirre, J. E., additional, Aretxaga, I., additional, Arumugam, V., additional, Austermann, J. E., additional, Bock, J. J., additional, Bradford, C. M., additional, Cirasuolo, M., additional, Earle, L., additional, Ezawa, H., additional, Furusawa, H., additional, Furusawa, J., additional, Glenn, J., additional, Hatsukade, B., additional, Hughes, D. H., additional, Iono, D., additional, Ivison, R. J., additional, Johnson, S., additional, Kamenetzky, J., additional, Kawabe, R., additional, Lupu, R., additional, Maloney, P., additional, Matsuhara, H., additional, Mauskopf, P. D., additional, Motohara, K., additional, Murphy, E. J., additional, Nakajima, K., additional, Nakanishi, K., additional, Naylor, B. J., additional, Nguyen, H. T., additional, Perera, T. A., additional, Scott, K. S., additional, Shimasaku, K., additional, Takagi, T., additional, Takata, T., additional, Tamura, Y., additional, Tanaka, K., additional, Tsukagoshi, T., additional, Wilner, D. J., additional, Wilson, G. W., additional, Yun, M. S., additional, and Zmuidzinas, J., additional
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- 2011
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6. Effects of model incompleteness on the drift-scan calibration of radio telescopes
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Phil Bull, David DeBoer, Adam P. Beardsley, Nipanjana Patra, Ziyaad Halday, Nima Razavi-Ghods, Nicholas S. Kern, Aaron R. Parsons, Piyanat Kittiwisit, Kingsley Gale-Sides, Robert Pascua, Max Tegmark, Judd D. Bowman, Adam Lanman, Samantha Pieterse, James Robnett, Peter Sims, Gianni Bernardi, Peter K. G. Williams, Miguel F. Morales, Chris Carilli, Saul A. Kohn, Zara Abdurashidova, Eloy de Lera Acedo, Zaki S. Ali, Steven R. Furlanetto, Abraham R. Neben, Eunice Matsetela, Randall Fritz, Bojan Nikolic, Aaron Ewall-Wice, Bryna J. Hazelton, Deepthi Gorthi, Richard F. Bradley, Matthew Kolopanis, Jon Ringuette, Brian Glendenning, Matt Dexter, Joshua S. Dillon, Carina Cheng, Paul La Plante, Austin Julius, S. H. Carey, Nithyanandan Thyagarajan, Haoxuan Zheng, David B. Lewis, Mario G. Santos, Daniel C. Jacobs, Joshua Kerrigan, Steven G. Murray, Cresshim Malgas, Jack Hickish, Adrian Liu, James E. Aguirre, Nicolas Fagnoni, Jacob Burba, Yanga Balfour, Lourence Malan, Craig Smith, Raul A. Monsalve, Bradley Greig, Jonathan C. Pober, Andrei Mesinger, Jasper Grobbelaar, Tashalee S. Billings, Zachary E. Martinot, Telalo Lekalake, Matthys Maree, B. K. Gehlot, David MacMahon, Yin-Zhe Ma, Mathakane Molewa, Paul Alexander, Kathryn Rosie, Tshegofalang Mosiane, Nivedita Mahesh, John Ely, Jacqueline N. Hewitt, Angelo Syce, Gehlot, B. K., Jacobs, D. C., Bowman, J. D., Mahesh, N., Murray, S. G., Kolopanis, M., Beardsley, A. P., Abdurashidova, Z., Aguirre, J. E., Alexander, P., Ali, Z. S., Balfour, Y., Bernardi, G., Billings, T. S., Bradley, R. F., Bull, P., Burba, J., Carey, S., Carilli, C. L., Cheng, C., Deboer, D. R., Dexter, M., De Lera Acedo, E., Dillon, J. S., Ely, J., Ewall-Wice, A., Fagnoni, N., Fritz, R., Furlanetto, S. R., Gale-Sides, K., Glendenning, B., Gorthi, D., Greig, B., Grobbelaar, J., Halday, Z., Hazelton, B. J., Hewitt, J. N., Hickish, J., Julius, A., Kern, N. S., Kerrigan, J., Kittiwisit, P., Kohn, S. A., Lanman, A., La Plante, P., Lekalake, T., Lewis, D., Liu, A., Ma, Y. -Z., Macmahon, D., Malan, L., Malgas, C., Maree, M., Martinot, Z. E., Matsetela, E., Mesinger, A., Molewa, M., Monsalve, R. A., Morales, M. F., Mosiane, T., Neben, A. R., Nikolic, B., Parsons, A. R., Pascua, R., Patra, N., Pieterse, S., Pober, J. C., Razavi-Ghods, N., Ringuette, J., Robnett, J., Rosie, K., Santos, M. G., Sims, P., Smith, C., Syce, A., Tegmark, M., Thyagarajan, N., Williams, P. K. G., Zheng, H., ITA, and USA
- Subjects
Cosmology and Nongalactic Astrophysics (astro-ph.CO) ,010504 meteorology & atmospheric sciences ,media_common.quotation_subject ,statistical [methods] ,FOS: Physical sciences ,01 natural sciences ,Radio telescope ,Settore FIS/05 - Astronomia e Astrofisica ,0103 physical sciences ,Calibration ,Instrumentation and Methods for Astrophysics (astro-ph.IM) ,010303 astronomy & astrophysics ,Reionization ,0105 earth and related environmental sciences ,Remote sensing ,media_common ,Physics ,COSMIC cancer database ,Astrophysics::Instrumentation and Methods for Astrophysics ,Astronomy and Astrophysics ,interferometric [techniques] ,interferometer [instrumentation] ,Interferometry ,Amplitude ,13. Climate action ,Space and Planetary Science ,Sky ,data analysi [methods] ,dark ages, reionization, first star ,Antenna (radio) ,Astrophysics - Instrumentation and Methods for Astrophysics ,miscellaneou [instrumentation] ,Astrophysics - Cosmology and Nongalactic Astrophysics - Abstract
Precision calibration poses challenges to experiments probing the redshifted 21-cm signal of neutral hydrogen from the Cosmic Dawn and Epoch of Reionization (z~30-6). In both interferometric and global signal experiments, systematic calibration is the leading source of error. Though many aspects of calibration have been studied, the overlap between the two types of instruments has received less attention. We investigate the sky based calibration of total power measurements with a HERA dish and an EDGES style antenna to understand the role of auto-correlations in the calibration of an interferometer and the role of sky in calibrating a total power instrument. Using simulations we study various scenarios such as time variable gain, incomplete sky calibration model, and primary beam model. We find that temporal gain drifts, sky model incompleteness, and beam inaccuracies cause biases in the receiver gain amplitude and the receiver temperature estimates. In some cases, these biases mix spectral structure between beam and sky resulting in spectrally variable gain errors. Applying the calibration method to the HERA and EDGES data, we find good agreement with calibration via the more standard methods. Although instrumental gains are consistent with beam and sky errors similar in scale to those simulated, the receiver temperatures show significant deviations from expected values. While we show that it is possible to partially mitigate biases due to model inaccuracies by incorporating a time-dependent gain model in calibration, the resulting errors on calibration products are larger and more correlated. Completely addressing these biases will require more accurate sky and primary beam models., Comment: 16 pages, 13 figures, 1 table; accepted for publication in MNRAS main journal
- Published
- 2021
- Full Text
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7. Foreground modelling via Gaussian process regression: an application to HERA data
- Author
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Max Tegmark, Aaron R. Parsons, Samavarti Gallardo, Angelo Syce, Jon Ringuette, Adam P. Beardsley, Gianni Bernardi, Richard F. Bradley, Matthew Kolopanis, Mario G. Santos, Adrian Liu, Kathryn Rosie, T. L. Grobler, Nicholas S. Kern, Brian Glendenning, Amy S. Igarashi, Siyanda Matika, Daniel C. Jacobs, Carina Cheng, Oleg Smirnov, Nithyanandan Thyagarajan, Haoxuan Zheng, Peter K. G. Williams, Matthys Maree, Roshan K. Benefo, Nathan Mathison, Lourence Malan, Austin Julius, Nima Razavi-Ghods, Cresshim Malgas, B. K. Gehlot, Nicolas Fagnoni, Bryna J. Hazelton, Andrei Mesinger, Chuneeta D. Nunhokee, Jasper Grobbelaar, David MacMahon, Deepthi Gorthi, Léon V. E. Koopmans, Joshua S. Dillon, Steve R. Furlanetto, Abraham R. Neben, Chris Carilli, Tashalee S. Billings, Zachary E. Martinot, Judd D. Bowman, Samantha Pieterse, Paul Alexander, Randall Fritz, James Robnett, Telalo Lekalake, Raddwine Sell, Saul A. Kohn, Eloy de Lera Acedo, Florent Mertens, Alec Josaitis, Bradley Greig, Nipanjana Patra, Craig Smith, Austin F. Fortino, David DeBoer, Miguel F. Morales, Zaki S. Ali, Bojan Nikolic, Aaron Ewall-Wice, Eunice Matsetela, MacCalvin Kariseb, Gcobisa Fadana, Paul M. Chichura, Jack Hickish, James E. Aguirre, Abhik Ghosh, Anita Loots, Ghosh, A., Mertens, F., Bernardi, G., Santos, M. G., Kern, N. S., Carilli, C. L., Grobler, T. L., Koopmans, L. V. E., Jacobs, D. C., Liu, A., Parsons, A. R., Morales, M. F., Aguirre, J. E., Dillon, J. S., Hazelton, B. J., Smirnov, O. M., Gehlot, B. K., Matika, S., Alexander, P., Ali, Z. S., Beardsley, A. P., Benefo, R. K., Billings, T. S., Bowman, J. D., Bradley, R. F., Cheng, C., Chichura, P. M., Deboer, D. R., Acedo, E. D. L., Ewall-Wice, A., Fadana, G., Fagnoni, N., Fortino, A. F., Fritz, R., Furlanetto, S. R., Gallardo, S., Glendenning, B., Gorthi, D., Greig, B., Grobbelaar, J., Hickish, J., Josaitis, A., Julius, A., Igarashi, A. S., Kariseb, M., Kohn, S. A., Kolopanis, M., Lekalake, T., Loots, A., Macmahon, D., Malan, L., Malgas, C., Maree, M., Martinot, Z. E., Mathison, N., Matsetela, E., Mesinger, A., Neben, A. R., Nikolic, B., Nunhokee, C. D., Patra, N., Pieterse, S., Razavi-Ghods, N., Ringuette, J., Robnett, J., Rosie, K., Sell, R., Smith, C., Syce, A., Tegmark, M., Thyagarajan, N., Williams, P. K. G., Zheng, H., Laboratoire d'Etude du Rayonnement et de la Matière en Astrophysique (LERMA (UMR_8112)), Sorbonne Université (SU)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université de Cergy Pontoise (UCP), Université Paris-Seine-Université Paris-Seine-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL), ITA, USA, ZAF, Astronomy, and Kapteyn Astronomical Institute
- Subjects
Cosmology and Nongalactic Astrophysics (astro-ph.CO) ,interferometers [instrumentation] ,first stars ,statistical [methods] ,FOS: Physical sciences ,Astrophysics::Cosmology and Extragalactic Astrophysics ,Astrophysics ,Astronomy & Astrophysics ,01 natural sciences ,Signal ,Settore FIS/05 - Astronomia e Astrofisica ,0103 physical sciences ,Coherence (signal processing) ,dark ages, reionization, first stars ,dark ages ,instrumentation: interferometers ,010306 general physics ,010303 astronomy & astrophysics ,Reionization ,Astrophysics::Galaxy Astrophysics ,Physics ,methods: statistical ,COSMIC cancer database ,Astrophysics::Instrumentation and Methods for Astrophysics ,Spectral density ,Astronomy and Astrophysics ,White noise ,observations [cosmology] ,Redshift ,diffuse radiation ,Periodic function ,interferometer [instrumentation] ,Space and Planetary Science ,cosmology: observations ,astro-ph.CO ,reionization ,dark ages, reionization, first star ,large-scale structure of Universe ,[PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph] ,Astronomical and Space Sciences ,Astrophysics - Cosmology and Nongalactic Astrophysics ,observation [cosmology] - Abstract
The key challenge in the observation of the redshifted 21-cm signal from cosmic reionization is its separation from the much brighter foreground emission. Such separation relies on the different spectral properties of the two components, although, in real life, the foreground intrinsic spectrum is often corrupted by the instrumental response, inducing systematic effects that can further jeopardize the measurement of the 21-cm signal. In this paper, we use Gaussian Process Regression to model both foreground emission and instrumental systematics in $\sim 2$ hours of data from the Hydrogen Epoch of Reionization Array. We find that a simple co-variance model with three components matches the data well, giving a residual power spectrum with white noise properties. These consist of an "intrinsic" and instrumentally corrupted component with a coherence-scale of 20 MHz and 2.4 MHz respectively (dominating the line of sight power spectrum over scales $k_{\parallel} \le 0.2$ h cMpc$^{-1}$) and a baseline dependent periodic signal with a period of $\sim 1$ MHz (dominating over $k_{\parallel} \sim 0.4 - 0.8$h cMpc$^{-1}$) which should be distinguishable from the 21-cm EoR signal whose typical coherence-scales is $\sim 0.8$ MHz., 15 pages, 15 figures, 1 table, Accepted to MNRAS
- Published
- 2020
- Full Text
- View/download PDF
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