Zobrazeno 1 - 10
of 63
pro vyhledávání: '"M. Wilensky"'
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 510:5023-5034
We explore how chromatic RFI flags affect 21-cm power spectrum measurements. We particularly study flags that are coarser than the analysis resolution. We find that such RFI flags produce excess power in the EoR window in much the same way as residua
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ec78644f5a5d933e5bcfe384cc07f89f
https://doi.org/10.1093/mnras/stab3456
https://doi.org/10.1093/mnras/stab3456
Autor:
Matthew Kolopanis, Adam P. Beardsley, Christopher H. Jordan, Nichole Barry, Q. Zheng, B. McKinley, Randall B. Wayth, E. Howard, Daniel A. Mitchell, Judd D. Bowman, J. S. B. Wyithe, Pratika Dayal, Cathryn M. Trott, Keisuke Hasegawa, Anne Hutter, Miguel F. Morales, Daniel C. Jacobs, Rachel L. Webster, Bradley Greig, Bryna J. Hazelton, A. Chokshi, S. Murray, M. Rahimi, J. L. B. Line, M. Wilensky, S. Yoshiura, Steven Tingay, Christene Lynch, B. Pindor, Keitaro Takahashi, Jonathan C. Pober, R. Byrne
Publikováno v:
Monthly Notices of the Royal Astronomical Society
Monthly Notices of the Royal Astronomical Society, 507, 772-780. Oxford University Press
Monthly Notices of the Royal Astronomical Society, 507, 772-780. Oxford University Press
The locations of Ly-$\alpha$ emitting galaxies (LAEs) at the end of the Epoch of Reionisation (EoR) are expected to correlate with regions of ionised hydrogen, traced by the redshifted 21~cm hyperfine line. Mapping the neutral hydrogen around regions
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::bb94f4a078b672e678364d4d0310623b
https://doi.org/10.1093/mnras/stab2235
https://doi.org/10.1093/mnras/stab2235
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 498:265-275
We quantify the effect of radio frequency interference (RFI) on measurements of the 21-cm power spectrum during the Epoch of Reionization (EoR). Specifically, we investigate how the frequency structure of RFI source emission generates contamination i
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c7181d2deab8d5639e0d062c47bb7e68
https://doi.org/10.1093/mnras/staa2442
https://doi.org/10.1093/mnras/staa2442
Autor:
Eric Howard, Keitaro Takahashi, M. Wilensky, Bryna J. Hazelton, Christene Lynch, R. C. Joseph, B. Pindor, S. Yoshiura, M. Rahimi, J. L. B. Line, Matthew Kolopanis, Bradley Greig, B. McKinley, Daniel C. Jacobs, Steven Tingay, Jonathan C. Pober, Judd D. Bowman, Zheng Zhang, Randall B. Wayth, A. Chokshi, Christopher H. Jordan, R. Byrne, Rachel L. Webster, Nichole Barry, Adam P. Beardsley, J. S. B. Wyithe, Keisuke Hasegawa, Daniel A. Mitchell, Cathryn M. Trott, Miguel F. Morales, Qian Zheng, Steven G. Murray
Observations in the lowest MWA band between $75-100$ MHz have the potential to constrain the distribution of neutral hydrogen in the intergalactic medium at redshift $\sim 13-17$. Using 15 hours of MWA data, we analyse systematics in this band such a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9b146f6d1f8fd0d56e1015af66a6a8ef
Autor:
Daniel C. Jacobs, Nichole Barry, Judd D. Bowman, Cathryn M. Trott, M. Wilensky, Miguel F. Morales, Bartosz Pindor, Eric Howard, Q. Zheng, Adam P. Beardsley, Rachel L. Webster, Randall B. Wayth, J. L. B. Line, Bradley Greig, Daniel A. Mitchell, Jonathan C. Pober, Benjamin McKinley, Bryna J. Hazelton, R. Byrne, J. S. B. Wyithe, Christopher H. Jordan, Kenji Hasegawa, Matthew Kolopanis, Steven Tingay, Masoud Rahimi, Shintaro Yoshiura, Keitaro Takahashi, Christene Lynch, R. C. Joseph, S. Murray, A. Chokshi
Current attempts to measure the 21cm Power Spectrum of neutral hydrogen during the Epoch of Reionization are limited by systematics which produce measured upper limits above both the thermal noise and the expected cosmological signal. These systemati
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c4cb0060fad74d560ba43a8c39339dd4
Autor:
Aaron Ewall-Wice, Daniel C. Jacobs, Craig Smith, Cresshim Malgas, Nicolas Fagnoni, Nipanjana Patra, James Robnett, Lourence Malan, Yanga Balfour, Joshua Kerrigan, Ziyaad Halday, Steve R. Furlanetto, M. Wilensky, Peter Sims, Paul Alexander, Judd D. Bowman, Samantha Pieterse, Nima Razavi-Ghods, Piyanat Kittiwisit, Angelo Syce, Richard F. Bradley, Matthew Kolopanis, Peter K. G. Williams, Jonathan C. Pober, Telalo Lekalake, Andrei Mesinger, Jasper Grobbelaar, Brian Glendenning, D. R. DeBoer, Kingsley Gale-Sides, John Ely, Gianni Bernardi, Tashalee S. Billings, Zachary E. Martinot, Mario G. Santos, Carina Cheng, Matthys Maree, Miguel F. Morales, Adrian Liu, Kathryn Rosie, Robert Pascua, Nithyanandan Thyagarajan, Zaki S. Ali, Nicholas S. Kern, Bryna J. Hazelton, Bojan Nikolic, Zara Abdurashidova, Jacqueline N. Hewitt, Chris Carilli, Austin Julius, P. La Plante, S. Murray, Mathakane Molewa, Bradley Greig, David B. Lewis, Tshegofalang Mosiane, Adam Lanman, Deepthi Gorthi, Joshua S. Dillon, Haoxuan Zheng, Eunice Matsetela, James E. Aguirre, Dave MacMahon, S. H. Carey, E. de Lera Acedo, Aaron R. Parsons, Matthew R. Dexter, Jon Ringuette, Abraham R. Neben, Randall Fritz, Jack Hickish, Jacob Burba, Adam P. Beardsley, Saul A. Kohn, Philip Bull
As current- and next-generation astronomical instruments come online, they will generate an unprecedented deluge of data. Analyzing these data in real time presents unique conceptual and computational challenges, and their long-term storage and archi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::21586a1acad5c953e7d896e50c2241fa
Autor:
Nichole Barry, Adam Lanman, Wenyang Li, Q. Zheng, M. Wilensky, Randall B. Wayth, Kenji Hasegawa, Daniel A. Mitchell, Christopher H. Jordan, Rachel L. Webster, Jonathan C. Pober, R. Byrne, Cathryn M. Trott, Steven Tingay, Miguel F. Morales, M. Rahimi, Bryna J. Hazelton, J. L. B. Line, Daniel C. Jacobs, Zheng Zhang, A. Chokshi, Steven G. Murray, Keitaro Takahashi, Shintaro Yoshiura, Christene Lynch, R. C. Joseph, B. Pindor, Benjamin McKinley, Adam P. Beardsley
Publikováno v:
Publications of the Astronomical Society of Australia. 37
Precise instrumental calibration is of crucial importance to 21-cm cosmology experiments. The Murchison Widefield Array's (MWA) Phase II compact configuration offers us opportunities for both redundant calibration and sky-based calibration algorithms
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c0fc691a04c886c1593db3df97208dd5
https://doi.org/10.1017/pasa.2020.37
https://doi.org/10.1017/pasa.2020.37
Calibration precision is currently a limiting systematic in 21 cm cosmology experiments. While there are innumerable calibration approaches, most can be categorized as either `sky-based,' relying on an extremely accurate model of astronomical foregro
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d8ea0101f5f2a1755d88efb418ee8d72
Autor:
Rachel L. Webster, Keitaro Takahashi, J. L. B. Line, Jonathan C. Pober, R. Byrne, Christene Lynch, R. C. Joseph, Christopher H. Jordan, Steven G. Murray, B. Pindor, M. Wilensky, Bryna J. Hazelton, Nichole Barry, Steven Tingay, B. McKinley, Daniel A. Mitchell, Shintaro Yoshiura, Kenji Kubota, W. Li, M. Walker, J. S. B. Wyithe, Kenji Hasegawa, Shih Ching Fu, Cathryn M. Trott, Miguel F. Morales, Q. Zheng, Randall B. Wayth, T. Kaneuji, M. Rahimi
We explore methods for robust estimation of the 21 cm signal from the Epoch of Reionisation (EoR). A Kernel Density Estimator (KDE) is introduced for measuring the spatial temperature fluctuation power spectrum from the EoR. The KDE estimates the und
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0d7a5e9b531f3353a1d94e792e467681
http://arxiv.org/abs/1904.11623
http://arxiv.org/abs/1904.11623
Autor:
Andrew Williams, M. Wilensky, L. Horsley, Christene Lynch, J. S. B. Wyithe, R. C. Joseph, Bryna J. Hazelton, Catherine A. Watkinson, D. L. Kaplan, Steven G. Murray, Suman Majumdar, Bartosz Pindor, Jonathan C. Pober, Kenji Hasegawa, Adam P. Beardsley, T. Booler, Rachel L. Webster, Shintaro Yoshiura, Daniel A. Mitchell, Keitaro Takahashi, Chen Wu, R. Byrne, Nichole Barry, Wenyang Li, Mark Walker, Kenji Kubota, Benjamin McKinley, Cathryn M. Trott, Brian Crosse, Miguel F. Morales, K. Steele, Christopher H. Jordan, D. Pallot, Steven Tingay, G. Sleap, Melanie Johnston-Hollitt, Q. Zheng, Randall B. Wayth, Thomas M. O. Franzen, T. Kaneuji, J. L. B. Line, Masoud Rahimi, David Emrich, J. Riding, D. Kenney
Publikováno v:
Publications of the Astronomical Society of Australia
We apply two methods to estimate the 21~cm bispectrum from data taken within the Epoch of Reionisation (EoR) project of the Murchison Widefield Array (MWA). Using data acquired with the Phase II compact array allows a direct bispectrum estimate to be
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::00a398aa6a816fae3be839ea7ae50b2d