Results 1 to 10 of about 27,680 (210)

How is the Reionization Epoch Defined? [PDF]

Mon.Not.Roy.Astron.Soc. 330 (2002) L43, 2002
We study the effect of a prolonged epoch of reionization on the angular power spectrum of the Cosmic Microwave Background. Typically reionization studies assume a sudden phase transition, with the intergalactic gas moving from a fully neutral to a fully ...
Andrea Ferrara, Barkana, Becker, Benson, Bruscoli, Ciardi, De Bernardis, De Bernardis, Evan Scannapieco, Fabbri, Gnedin, Griffiths, Griffiths, Hanany, Hu, Marialuce Bruscoli, Naselsky, Padin, Peebles, Seljak, Steidel, Tegmark, Tegmark, Zaldarriaga   +23 more
core   +5 more sources

The Impact of Patchy Reionization on Ultrafaint Dwarf Galaxies [PDF]

The Astrophysical Journal, 2023
We investigate how patchy reionization affects the star formation history (SFH) and stellar metallicity of ultrafaint dwarf galaxies (UFDs). Patchy reionization refers to varying ultraviolet background strengths depending on a galaxy’s environment ...
Jaeeun Kim, Myoungwon Jeon, Yumi Choi, Hannah Richstein, Elena Sacchi, Nitya Kallivayalil   +5 more
doaj   +2 more sources

An Estimate of the Impact of Reionization on Supermassive Black Hole Growth [PDF]

The Astrophysical Journal, 2023
The supermassive black holes (SMBHs) that power active galactic nuclei found at z ≥ 6 were formed during the Epoch of Reionization. Because reionization is an inhomogeneous process, the physical properties of SMBH host-galaxy environments will vary ...
Phoebe R. Upton Sanderbeck, Jarrett L. Johnson, Madeline A. Marshall   +2 more
doaj   +2 more sources

Reionization Histories of Milky Way Mass Halos [PDF]

, 2013
We investigate the connection between the epoch of reionization and the present day universe, by examining the extended mass reionization histories of dark matter halos identified at z=0.
Abel, Tom, Alvarez, Marcelo A., Li, Tony Y., Wechsler, Risa H.   +3 more
core   +3 more sources

Studying Reionization with Ly-alpha Emitters [PDF]

Mon.Not.Roy.Astron.Soc. 381: 75-96, 2007, 2007
We show that observations of high-redshift Ly-alpha emitters (LAEs) have the potential to provide definitive evidence for reionization in the near future.
Babich, Barton, Becker, Becker, Bolton, Casali, Croton, Cuby, De Vos, Dekel, Dijkstra, Dijkstra, Dijkstra, Fan, Furlanetto, Furlanetto, Furlanetto, Furlanetto, Furlanetto, Furlanetto, Gardner, Haiman, Haiman, Hansen, Horton, Hui, Iliev, Iye, Kashikawa, Kauffmann, Keating, Kodaira, Landy, Lars Hernquist, Lidz, Lidz, Liu, Loeb, Madau, Malhotra, Malhotra, Matias Zaldarriaga, Matthew McQuinn, McPherson, McQuinn, McQuinn, McQuinn, Mesinger, Mesinger, Miralda-Escude, Morales, Neufeld, Osterbrock, Ouchi, Ouchi, Page, Partridge, Pen, Pritchard, Rhoads, Santos, Santos, Shapley, Sheth, Sheth, Shimasaku, Sokasian, Sokasian, Sokasian, Spergel, Spergel, Springel, Springel, Stark, Stark, Suvendra Dutta, Taniguchi, Tapken, Tasitsiomi, Thommes, Totani, White, White, Willis, Wyithe, Wyithe, Zahn, Zahn, Zaldarriaga   +88 more
core   +2 more sources

The 21 Centimeter Forest [PDF]

Mon.Not.Roy.Astron.Soc.370:1867-1875,2006, 2006
We examine the prospects for studying the pre-reionization intergalactic medium (IGM) through the so-called 21 cm forest in spectra of bright high-redshift radio sources.
Barkana, Barkana, Becker, Bouwens, Carilli, Chen, Ciardi, Ciardi, Dijkstra, Fan, Fan, Field, Field, Field, Furlanetto, Furlanetto, Furlanetto, Furlanetto, Furlanetto, Furlanetto, Furlanetto, Furlanetto, Furlanetto, Gilfanov, Glover, Gnedin, Grimm, Haiman, Hirata, Hogan, Iliev, Iliev, Iliev, Iliev, Ioka, Kitayama, Kuhlen, Liszt, Madau, Malhotra, Navarro, Oh, Oh, Page, Press, Pritchard, Ranalli, Schaye, Scott, Seager, Shapiro, Sheth, Smith, Spergel, Steven R. Furlanetto, Taniguchi, Thoul, Wouthuysen, Zahn, Zaldarriaga, Zygelman   +60 more
core   +2 more sources

Detecting Helium Reionization with Fast Radio Bursts [PDF]

Phys. Rev. D 101, 103019 (2020), 2020
Fast radio bursts (FRB) probe the electron density of the universe along the path of propagation, making high redshift FRB sensitive to the helium reionization epoch.
Linder, Eric V.
core   +2 more sources

How does radiative feedback from a UV background impact reionization? [PDF]

, 2013
An ionizing UV background (UVB) inhibits gas accretion and photo-evaporates gas from the shallow potential wells of small, dwarf galaxies. During cosmological reionization, this effect can result in negative feedback: suppressing star-formation inside ...
Mesinger, Andrei, Sobacchi, Emanuele
core   +2 more sources

CMB Neutrino Mass Bounds and Reionization [PDF]

Phys.Rev.D82:087302,2010, 2010
Current cosmic microwave background (CMB) bounds on the sum of the neutrino masses assume a sudden reionization scenario described by a single parameter that determines the onset of reionization.
Alessandro Melchiorri, Asantha Cooray, Maria Archidiacono, Stefania Pandolfi, Y. B. Zel’dovich   +4 more
core   +3 more sources

The effect of reionization on the COBE normalization [PDF]

, 2001
We point out that the effect of reionization on the microwave anisotropy power spectrum is not necessarily negligible on the scales probed by COBE. It can lead to an upward shift of the COBE normalization by more than the one-sigma error quoted ignoring ...
A. R. Liddle, Jaffe, L. M. Griffiths
core   +4 more sources