Results 91 to 100 of about 727 (169)

Behavior of the Lyα Damping Wings as a Function of Reionization Topology

The Astrophysical Journal
The damping wing signatures in high-redshift quasars have proven instrumental in studying the epoch of reionization. With the upcoming Euclid mission set to discover many more quasars, it is crucial to explore what this new set of quasars might reveal ...
Yash M. Sharma, Frederick B. Davies, Prakash Gaikwad, Fahad Nasir, Sarah E. I. Bosman   +4 more
doaj   +1 more source

Prospects for kSZ2–21 cm2 Cross Correlations during Reionization

The Astrophysical Journal
The 21 cm line and the patchy kinetic Sunyaev–Zel’dovich (kSZ) effect are promising and complementary probes of the Epoch of Reionization. A challenge for cross correlating these two signals is that foreground avoidance or removal algorithms applied to ...
Meng Zhou, Paul La Plante, Adam Lidz, Yi Mao, Yin-Zhe Ma   +4 more
doaj   +1 more source

Constraining local UV field geometry at reionization using Milky Way satellites

EPJ Web of Conferences, 2012
We present a new semi-analytical model of the population of satellite galaxies of the Milky Way, aimed at estimating the effect of the geometry of reionization at galaxy scale on the properties of the satellites. In this model reionization can be either:
Aubert D., Ocvirk P.
doaj   +1 more source

What Can We Learn about Reionization Astrophysical Parameters Using Gaussian Process Regression?

The Astrophysical Journal
Reionization is one of the least understood processes in the evolution history of the Universe, mostly because of the numerous astrophysical processes occurring simultaneously about which we do not have a very clear idea so far.
Purba Mukherjee, Antara Dey, Supratik Pal   +2 more
doaj   +1 more source

Perspectives on fundamental cosmology from Low Earth Orbit and the Moon. [PDF]

NPJ Microgravity, 2023
Bertone G, Buchmueller OL, Cole PS.
europepmc   +1 more source

Probing the Cosmic Reionization History with JWST: Gunn–Peterson and Lyα Damping Wing Absorption at 4.5 < z < 13

The Astrophysical Journal
We present a statistical analysis of Ly α absorption using 581 galaxies at z = 4.5–13 observed with multiple JWST/NIRSpec spectroscopy programs, including JADES, UNCOVER, CEERS, and GO/DDT. We carefully construct composite spectra binned by redshift with
Hiroya Umeda, Masami Ouchi, Yuta Kageura, Yuichi Harikane, Minami Nakane, Tran Thi Thai, Kimihiko Nakajima   +6 more
doaj   +1 more source

Cosmic Reionization in the JWST Era: Back to AGNs?

The Astrophysical Journal
Deep surveys with the James Webb Space Telescope (JWST) have revealed an emergent population of moderate-luminosity, broad-line active galactic nuclei (AGNs) at 4 ≲ z ≲ 13 powered by accretion onto early massive black holes.
Piero Madau, Emanuele Giallongo, Andrea Grazian, Francesco Haardt   +3 more
doaj   +1 more source

Cross-correlating the Patchy Screening and Kinetic Sunyaev–Zel’dovich Effects as a New Probe of Reionization

The Astrophysical Journal
The kinetic Sunyaev–Zel’dovich effect (kSZ) and patchy screening effect are two complementary cosmic microwave background (CMB) probes of the reionization era.
Darby Kramer, Alexander van Engelen, Christopher Cain, Niall MacCrann, Hy Trac, Skylar Grayson, Evan Scannapieco, Blake Sherwin   +7 more
doaj   +1 more source

Census of Lyα Emission from ∼600 Galaxies at z = 5–14: Evolution of the Lyα Luminosity Function and a Late Sharp Cosmic Reionization

The Astrophysical Journal Supplement Series
We present the statistical properties of Ly α emission in 586 galaxies at z  = 4.5–14.2, observed by multiple JWST/NIRSpec spectroscopy projects, including the JADES, GLASS, CEERS, and GO/DDT programs.
Yuta Kageura, Masami Ouchi, Minami Nakane, Hiroya Umeda, Yuichi Harikane, Shintaro Yoshiura, Kimihiko Nakajima, Hidenobu Yajima, Tran Thi Thai   +8 more
doaj   +1 more source

Peering into the dark (ages) with low-frequency space interferometers: Using the 21-cm signal of neutral hydrogen from the infant universe to probe fundamental (Astro)physics. [PDF]

Exp Astron (Dordr), 2021
Koopmans LVE, Barkana R, Bentum M, Bernardi G, Boonstra AJ, Bowman J, Burns J, Chen X, Datta A, Falcke H, Fialkov A, Gehlot B, Gurvits L, Jelić V, Klein-Wolt M, Lazio J, Meerburg D, Mellema G, Mertens F, Mesinger A, Offringa A, Pritchard J, Semelin B, Subrahmanyan R, Silk J, Trott C, Vedantham H, Verde L, Zaroubi S, Zarka P.   +29 more
europepmc   +1 more source