Zobrazeno 1 - 10
of 24
pro vyhledávání: '"Nunhokee, C D"'
Autor:
Nunhokee, C. D., Bernardi, G., Manti, S., Govoni, F., Bonafede, A., Venturi, T., Dallacasa, D., Murgia, M., Orrú, E., Pizzo, R. F., Smirnov, O. M., Vacca, V.
Publikováno v:
Monthly Notices of the Royal Astronomical Society, Volume 522, Issue 3, July 2023, Pages 4421-4429
Galaxy clusters are assembled via merging of smaller structures, in a process that generates shocks and turbulence in the intra cluster medium and produces radio diffuse emission in the form of halos and relics. The cluster pair A399-A401 represents
Externí odkaz:
http://arxiv.org/abs/2102.02900
Autor:
Philip, L., Abdurashidova, Z., Chiang, H. C., Ghazi, N., Gumba, A., Heilgendorff, H. M., Hickish, J., Jáuregui-García, J. M., Malepe, K., Nunhokee, C. D., Peterson, J., Sievers, J. L., Simes, V., Spann, R.
We introduce Probing Radio Intensity at high-Z from Marion (PRIZM), a new experiment designed to measure the globally averaged sky brightness, including the expected redshifted 21 cm neutral hydrogen absorption feature arising from the formation of t
Externí odkaz:
http://arxiv.org/abs/1806.09531
Autor:
Nunhokee, C. D., Bernardi, G., Kohn, S. A., Aguirre, J. E., Thyagarajan, N., Dillon, J. S., Foster, G., Grobler, T. L., Martinot, J. Z. E., Parsons, A. R.
A critical challenge in the observation of the redshifted 21-cm line is its separation from bright Galactic and extragalactic foregrounds. In particular, the instrumental leakage of polarized foregrounds, which undergo significant Faraday rotation as
Externí odkaz:
http://arxiv.org/abs/1707.04109
Publikováno v:
Monthly Notices of the Royal Astronomical Society, 2014, Volume 439, Issue 4, p.4030-4047
This work investigates a particular class of artefacts, or ghost sources, in radio interferometric images. Earlier observations with (and simulations of) the Westerbork Synthesis Radio Telescope (WSRT) suggested that these were due to calibration wit
Externí odkaz:
http://arxiv.org/abs/1402.1373
Akademický článek
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Autor:
Nunhokee, C D, Bernardi, G, Manti, S, Govoni, F, Bonafede, A, Venturi, T, Dallacasa, D, Murgia, M, Pizzo, R F, Smirnov, O M, Vacca, V
Publikováno v:
Monthly Notices of the Royal Astronomical Society; Jul2023, Vol. 522 Issue 3, p4421-4429, 9p
Autor:
Philip, L., Abdurashidova, Z., Chiang, H. C., Ghazi, N., Gumba, A., Heilgendorff, H. M., Jáuregui-García, J. M., Malepe, K., Nunhokee, C. D., Peterson, J., Sievers, J. L., Simes, V., Spann, R.
Publikováno v:
Journal of Astronomical Instrumentation; Jun2019, Vol. 8 Issue 2, pN.PAG-N.PAG, 11p
Akademický článek
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Autor:
The HERA Collaboration, Abdurashidova, Zara, Aguirre, James E., Alexander, Paul, Ali, Zaki, Balfour, Yanga, Barkana, Rennan, Beardsley, Adam, Bernardi, Gianni, Billings, Tashalee, Bowman, Judd, Bradley, Richard, Bull, Phillip, Burba, Jacob, Carey, Steven, Carilli, Christopher, Cheng, Carina, DeBoer, David, Dexter, Matthew, Acedo, Eloy de Lera, Dillon, Joshua, Ely, John, Ewall-Wice, Aaron, Fagnoni, Nicolas, Fialkov, Anastasia, Fritz, Randall, Furlanetto, Steven, Gale-Sides, Kingsley, Glendenning, Brian, Gorthi, Deepthi, Greig, Bradley, Grobbelaar, Jasper, Halday, Ziyaad, Hazelton, Bryna, Heimersheim, Stefan, Hewitt, Jacqueline, Hickish, Jack, Jacobs, Daniel, Julius, Austin, Kern, Nicholas, Kerrigan, Joshua, Kittiwisit, Piyanat, Kohn, Saul, Kolopanis, Matthew, Lanman, Adam, La Plante, Paul, Lekalake, Telalo, Lewis, David, Liu, Adrian, Ma, Yin-Zhe, MacMahon, David, Malan, Lourence, Malgas, Cresshim, Maree, Matthys, Martinot, Zachary, Matsetela, Eunice, Mesinger, Andrei, Mirocha, Jordan, Molewa, Mathakane, Morales, Miguel, Mosiane, Tshegofalang, Munoz, Julian, Murray, Steven, Neben, Abraham, Nikolic, Bojan, Nunhokee, Chuneeta Devi, Parsons, Aaron, Patra, Nipanjana, Pieterse, Samantha, Pober, Jonathan, Qin, Yuxiang, Razavi-Ghods, N., Reis, Itamar, Ringuette, Jon, Robnett, James, Rosie, Kathryn, Santos, Mario, Sikder, Sudipta, Sims, Peter, Smith, Craig, Syce, Angelo, Thyagarajan, Nithyanandan, Williams, Peter, Zheng, Haoxuan
Publikováno v:
Hydrogen Epoch of Reionization Array (HERA) 2022, ' HERA Phase I Limits on the Cosmic 21 cm Signal: Constraints on Astrophysics and Cosmology during the Epoch of Reionization ', The Astrophysical Journal, vol. 924, no. 2, 51 . https://doi.org/10.3847/1538-4357/ac2ffc
Recently, the Hydrogen Epoch of Reionization Array (HERA) collaboration has produced the experiment's first upper limits on the power spectrum of 21-cm fluctuations at z~8 and 10. Here, we use several independent theoretical models to infer constrain
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::699159f037b0b56f3426922a84c04b63
https://doi.org/10.3847/1538-4357/ac2ffc
https://doi.org/10.3847/1538-4357/ac2ffc
Autor:
Dara Storer, Joshua S. Dillon, Daniel C. Jacobs, Miguel F. Morales, Bryna J. Hazelton, Aaron Ewall‐Wice, Zara Abdurashidova, James E. Aguirre, Paul Alexander, Zaki S. Ali, Yanga Balfour, Adam P. Beardsley, Gianni Bernardi, Tashalee S. Billings, Judd D. Bowman, Richard F. Bradley, Philip Bull, Jacob Burba, Steven Carey, Chris L. Carilli, Carina Cheng, David R. DeBoer, Eloy Lera Acedo, Matt Dexter, Scott Dynes, John Ely, Nicolas Fagnoni, Randall Fritz, Steven R. Furlanetto, Kingsley Gale‐Sides, Brian Glendenning, Deepthi Gorthi, Bradley Greig, Jasper Grobbelaar, Ziyaad Halday, Jacqueline N. Hewitt, Jack Hickish, Tian Huang, Alec Josaitis, Austin Julius, MacCalvin Kariseb, Nicholas S. Kern, Joshua Kerrigan, Piyanat Kittiwisit, Saul A. Kohn, Matthew Kolopanis, Adam Lanman, Paul La Plante, Adrian Liu, Anita Loots, David MacMahon, Lourence Malan, Cresshim Malgas, Zachary E. Martinot, Andrei Mesinger, Mathakane Molewa, Tshegofalang Mosiane, Steven G. Murray, Abraham R. Neben, Bojan Nikolic, Chuneeta Devi Nunhokee, Aaron R. Parsons, Robert Pascua, Nipanjana Patra, Samantha Pieterse, Jonathan C. Pober, Nima Razavi‐Ghods, Daniel Riley, James Robnett, Kathryn Rosie, Mario G. Santos, Peter Sims, Saurabh Singh, Craig Smith, Jianrong Tan, Nithyanandan Thyagarajan, Peter K. G. Williams, Haoxuan Zheng
Publikováno v:
Hydrogen Epoch of Reionization Array (HERA) 2021, ' Automated Detection of Antenna Malfunctions in Large-N Interferometers : A Case Study with the Hydrogen Epoch of Reionization Array ', Radio Science, vol. 57, no. 1, e2021RS007376 . https://doi.org/10.1029/2021RS007376
We present a framework for identifying and flagging malfunctioning antennas in large radio interferometers. We outline two distinct categories of metrics designed to detect outliers along known failure modes of large arrays: cross-correlation metrics
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a283eba017b502cc89fef84b2e90f1ed
https://doi.org/10.1002/essoar.10508118.1
https://doi.org/10.1002/essoar.10508118.1