Zobrazeno 1 - 10
of 2 272
pro vyhledávání: '"Mirocha, A."'
We introduce a new physically-motivated spectral template set for fitting the spectral energy distributions (SEDs) of high-z galaxies. We use the public galaxy formation code ARES to generate star formation histories of thirteen representative galaxi
Externí odkaz:
http://arxiv.org/abs/2409.20519
The 21-cm background is a promising probe of early star formation and black hole activity. While a slew of experiments on the ground seek to detect the 21-cm monopole and spatial fluctuations on large $\sim 10$ arcminute scales, little work has been
Externí odkaz:
http://arxiv.org/abs/2409.13020
New James Webb Space Telescope (JWST) observations are revealing the first galaxies to be prolific producers of ionizing photons, which we argue gives rise to a tension between different probes of reionization. Over the last two decades a consensus h
Externí odkaz:
http://arxiv.org/abs/2404.07250
Autor:
Greig, Bradley, Prelogović, David, Mirocha, Jordan, Qin, Yuxiang, Ting, Yuan-Sen, Mesinger, Andrei
The detection of the 21-cm signal at $z\gtrsim6$ will reveal insights into the properties of the first galaxies responsible for driving reionisation. To extract this information, we perform parameter inference which requires embedding 3D simulations
Externí odkaz:
http://arxiv.org/abs/2403.14061
Although neural-network-based emulators enable efficient parameter estimation in 21-cm cosmology, the accuracy of such constraints is poorly understood. We employ nested sampling to fit mock data of the global 21-cm signal and high-$z$ galaxy ultravi
Externí odkaz:
http://arxiv.org/abs/2310.02503
Autor:
Kennedy, Jacob, Carr, Jonathan Colaço, Gagnon-Hartman, Samuel, Liu, Adrian, Mirocha, Jordan, Cui, Yue
Publikováno v:
Monthly Notices of the Royal Astronomical Society, Volume 529, Issue 4, pp.3684-3698 (2024)
Upcoming experiments will map the spatial distribution of the 21-cm signal over three-dimensional volumes of space during the Epoch of Reionization (EoR). Several methods have been proposed to mitigate the issue of astrophysical foreground contaminat
Externí odkaz:
http://arxiv.org/abs/2308.09740
The high-redshift galaxy UV luminosity function (UVLF) has become essential for understanding the formation and evolution of the first galaxies. Yet, UVLFs only measure galaxy abundances, giving rise to a degeneracy between the mean galaxy luminosity
Externí odkaz:
http://arxiv.org/abs/2306.09403
Autor:
Le, N., Karska, A., Figueira, M., Sewiło, M., Mirocha, A., Fischer, Ch., Kaźmierczak-Barthel, M., Klein, R., Gawroński, M., Koprowski, M., Kowalczyk, K., Fischer, W. J., Menten, K. M., Wyrowski, F., König, C., Kristensen, L. E.
Publikováno v:
A&A 674, A64 (2023)
(abridged) Far-infrared (FIR) line emission provides key information about the gas cooling and heating due to shocks and UV radiation associated with the early stages of star formation. Gas cooling via FIR lines might, however, depend on metallicity.
Externí odkaz:
http://arxiv.org/abs/2304.08127
Autor:
The HERA Collaboration, Abdurashidova, Zara, Adams, Tyrone, Aguirre, James E., Alexander, Paul, Ali, Zaki S., Baartman, Rushelle, Balfour, Yanga, Barkana, Rennan, Beardsley, Adam P., Bernardi, Gianni, Billings, Tashalee S., Bowman, Judd D., Bradley, Richard F., Breitman, Daniela, Bull, Philip, Burba, Jacob, Carey, Steve, Carilli, Chris L., Cheng, Carina, Choudhuri, Samir, DeBoer, David R., Acedo, Eloy de Lera, Dexter, Matt, Dillon, Joshua S., Ely, John, Ewall-Wice, Aaron, Fagnoni, Nicolas, Fialkov, Anastasia, Fritz, Randall, Furlanetto, Steven R., Gale-Sides, Kingsley, Garsden, Hugh, Glendenning, Brian, Gorce, Adélie, Gorthi, Deepthi, Greig, Bradley, Grobbelaar, Jasper, Halday, Ziyaad, Hazelton, Bryna J., Heimersheim, Stefan, Hewitt, Jacqueline N., Hickish, Jack, Jacobs, Daniel C., Julius, Austin, Kern, Nicholas S., Kerrigan, Joshua, Kittiwisit, Piyanat, Kohn, Saul A., Kolopanis, Matthew, Lanman, Adam, La Plante, Paul, Lewis, David, Liu, Adrian, Loots, Anita, Ma, Yin-Zhe, MacMahon, David H. E., Malan, Lourence, Malgas, Keith, Malgas, Cresshim, Maree, Matthys, Marero, Bradley, Martinot, Zachary E., McBride, Lisa, Mesinger, Andrei, Mirocha, Jordan, Molewa, Mathakane, Morales, Miguel F., Mosiane, Tshegofalang, Muñoz, Julian B., Murray, Steven G., Nagpal, Vighnesh, Neben, Abraham R., Nikolic, Bojan, Nunhokee, Chuneeta D., Nuwegeld, Hans, Parsons, Aaron R., Pascua, Robert, Patra, Nipanjana, Pieterse, Samantha, Qin, Yuxiang, Razavi-Ghods, Nima, Robnett, James, Rosie, Kathryn, Santos, Mario G., Sims, Peter, Singh, Saurabh, Smith, Craig, Swarts, Hilton, Tan, Jianrong, Thyagarajan, Nithyanandan, Wilensky, Michael J., Williams, Peter K. G., van Wyngaarden, Pieter, Zheng, Haoxuan
Publikováno v:
2023 ApJ 945 124
We report the most sensitive upper limits to date on the 21 cm epoch of reionization power spectrum using 94 nights of observing with Phase I of the Hydrogen Epoch of Reionization Array (HERA). Using similar analysis techniques as in previously repor
Externí odkaz:
http://arxiv.org/abs/2210.04912
Autor:
Driskell, Trey, Nadler, Ethan O., Mirocha, Jordan, Benson, Andrew, Boddy, Kimberly K., Morton, Timothy D., Lashner, Jack, An, Rui, Gluscevic, Vera
Many compelling dark matter (DM) scenarios feature Coulomb-like interactions between DM particles and baryons, in which the cross section for elastic scattering scales with relative particle velocity as $v^{-4}$. Previous studies have invoked such in
Externí odkaz:
http://arxiv.org/abs/2209.04499