Zobrazeno 1 - 10
of 87
pro vyhledávání: '"Dexter, Matthew A."'
Autor:
Gogo, Tamirat G., Ma, Yin-Zhe, Kittiwisit, Piyanat, Sievers, Jonathan L., Parsons, Aaron R., Pober, Jonathan C., Jacobs, Daniel C., Cheng, Carina, Kolopanis, Matthew, Liu, Adrian, Kohn, Saul A., Aguirre, James E., Ali, Zaki S., Bernardi, Gianni, Bradley, Richard F., DeBoer, David R., Dexter, Matthew R., Dillon, Joshua S., Klima, Pat, MacMahon, David H. E., Moore, David F., Nunhokee, Chuneeta D., Walbrugh, William P., Walker, Andre
Observation of redshifted 21-cm signal from the Epoch of Reionization (EoR) is challenging due to contamination from the bright foreground sources that exceed the signal by several orders of magnitude. The removal of this very high foreground relies
Externí odkaz:
http://arxiv.org/abs/2112.01083
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
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:
http://arxiv.org/abs/2108.07282
Autor:
Wielgus, Maciek, Akiyama, Kazunori, Blackburn, Lindy, Chan, Chi-kwan, Dexter, Jason, Doeleman, Sheperd S., Fish, Vincent L., Issaoun, Sara, Johnson, Michael D., Krichbaum, Thomas P., Lu, Ru-Sen, Pesce, Dominic W., Wong, George N., Bower, Geoffrey C., Broderick, Avery E., Chael, Andrew, Chatterjee, Koushik, Gammie, Charles F., Georgiev, Boris, Hada, Kazuhiro, Loinard, Laurent, Markoff, Sera, Marrone, Daniel P., Plambeck, Richard, Weintroub, Jonathan, Dexter, Matthew, MacMahon, David H. E., Wright, Melvyn, Collaboration, the Event Horizon Telescope
Publikováno v:
The Astrophysical Journal, 901:67 (2020)
The Event Horizon Telescope (EHT) has recently delivered the first resolved images of M87*, the supermassive black hole in the center of the M87 galaxy. These images were produced using 230 GHz observations performed in 2017 April. Additional observa
Externí odkaz:
http://arxiv.org/abs/2009.11842
Autor:
Kolopanis, Matthew, Jacobs, Daniel C., Cheng, Carina, Parsons, Aaron R., Kohn, Saul A., Pober, Jonathan C., Aguirre, James E., Ali, Zaki S., Bernardi, Gianni, Bradley, Richard F., Carilli, Christopher L., DeBoer, David R., Dexter, Matthew, Dillon, Joshua S., Kerrigan, Joshua, Klima, Patricia, Liu, Adrian, MacMahon, Dave, Moore, David F., Thyagarajan, Nithyanandan, Nunhokee, Chuneeta Devi, Walbrughp, William, Walker, Andre
We present limits on the 21cm power spectrum from the Epoch of Reionization (EoR) using data from the 64 antenna configuration of the Donald C. Backer Precision Array for Probing the Epoch of Reionization (PAPER) analyzed through a power spectrum pip
Externí odkaz:
http://arxiv.org/abs/1909.02085
Autor:
Cheng, Carina, Parsons, Aaron R., Kolopanis, Matthew, Jacobs, Daniel C., Liu, Adrian, Kohn, Saul A., Aguirre, James E., Pober, Jonathan C., Ali, Zaki S., Bernardi, Gianni, Bradley, Richard F., Carilli, Chris L., DeBoer, David R., Dexter, Matthew R., Dillon, Joshua S., Klima, Pat, MacMahon, David H. E., Moore, David F., Nunhokee, Chuneeta D., Walbrugh, William P., Walker, Andre
The Epoch of Reionization (EoR) is an uncharted era in our Universe's history during which the birth of the first stars and galaxies led to the ionization of neutral hydrogen in the intergalactic medium. There are many experiments investigating the E
Externí odkaz:
http://arxiv.org/abs/1810.05175
Autor:
Hickish, Jack, Abdurashidova, Zuhra, Ali, Zaki, Buch, Kaushal D., Chaudhari, Sandeep C., Chen, Hong, Dexter, Matthew, Domagalski, Rachel Simone, Ford, John, Foster, Griffin, George, David, Greenberg, Joe, Greenhill, Lincoln, Isaacson, Adam, Jiang, Homin, Jones, Glenn, Kapp, Francois, Kriel, Henno, Lacasse, Rich, Lutomirski, Andrew, MacMahon, David, Manley, Jason, Martens, Andrew, McCullough, Randy, Muley, Mekhala V., New, Wesley, Parsons, Aaron, Price, Daniel C., Primiani, Rurik A., Ray, Jason, Siemion, Andrew, Van Tonder, Verees'e, Vertatschitsch, Laura, Wagner, Mark, Weintroub, Jonathan, Werthimer, Dan
The Collaboration for Astronomy Signal Processing and Electronics Research (CASPER) has been working for a decade to reduce the time and cost of designing, building and deploying new digital radio-astronomy instruments. Today, CASPER open-source tech
Externí odkaz:
http://arxiv.org/abs/1611.01826
Autor:
de Krom, Iris, Bavius, Wijnand, Ziel, Ruben, Efremov, Evtim, van Meer, Davina, van Otterloo, Peter, van Andel, Inge, van Osselen, Deborah, Heemskerk, Maurice, van der Veen, Adriaan M.H., Dexter, Matthew A., Corns, Warren T., Ent, Hugo
Publikováno v:
In Measurement February 2021 169
Autor:
Pober, Jonathan C., Ali, Zaki S., Parsons, Aaron R., McQuinn, Matthew, Aguirre, James E., Bernardi, Gianni, Bradley, Richard F., Carilli, Chris L., Cheng, Carina, DeBoer, David R., Dexter, Matthew R., Furlanetto, Steven R., Grobbelaar, Jasper, Horrell, Jasper, Jacobs, Daniel C., Klima, Patricia J., Kohn, Saul A., Liu, Adrian, MacMahon, David H. E., Maree, Matthys, Mesinger, Andrei, Moore, David F., Razavi-Ghods, Nima, Stefan, Irina I., Walbrugh, William P., Walker, Andre, Zheng, Haoxuan
We present constraints on both the kinetic temperature of the intergalactic medium (IGM) at z=8.4, and on models for heating the IGM at high-redshift with X-ray emission from the first collapsed objects. These constraints are derived using a semi-ana
Externí odkaz:
http://arxiv.org/abs/1503.00045
Autor:
Ali, Zaki S., Parsons, Aaron R., Zheng, Haoxuan, Pober, Jonathan C., Liu, Adrian, Aguirre, James E., Bradley, Richard F., Bernardi, Gianni, Carilli, Chris L., Cheng, Carina, DeBoer, David R., Dexter, Matthew R., Grobbelaar, Jasper, Horrell, Jasper, Jacobs, Daniel C., Klima, Pat, MacMahon, David H. E., Maree, Matthys, Moore, David F., Razavi, Nima, Stefan, Irina I., Walbrugh, William P., Walker, Andre
Publikováno v:
Astrophysical Journal 809 61, August 2015
In this paper, we report new limits on 21cm emission from cosmic reionization based on a 135-day observing campaign with a 64-element deployment of the Donald C. Backer Precision Array for Probing the Epoch of Reionization (PAPER) in South Africa. Th
Externí odkaz:
http://arxiv.org/abs/1502.06016
Autor:
Moore, David, Aguirre, James E., Kohn, Saul, Parsons, Aaron, Ali, Zaki, Bradley, Richard, Carilli, Chris, DeBoer, David, Dexter, Matthew, Gugliucci, Nicole, Jacobs, Daniel, Klima, Pat, Liu, Adrian, MacMahon, David, Manley, Jason, Pober, Jonathan, Stefan, Irina, Walbrugh, William
Publikováno v:
The Astrophysical Journal, Volume 836, Issue 2, article id. 154, 9 pp. (2017)
Polarized foreground emission is a potential contaminant of attempts to measure the fluctuation power spectrum of highly redshifted 21 cm HI emission from the epoch of reionization. Using the Donald C. Backer Precision Array for Probing the Epoch of
Externí odkaz:
http://arxiv.org/abs/1502.05072