Results 101 to 110 of about 1,900,467 (218)

Improving Photometric Redshifts of Epoch of Reionization Galaxies: A New Empirical Transmission Curve with Neutral Hydrogen Damping Wing Lyα Absorption

The Astrophysical Journal Letters
We present a new analytical model for the attenuation to Epoch of Reionization (EoR) galaxies by proximate neutral hydrogen gas. Many galaxy spectra in the EoR taken by JWST have shown a flux deficit at wavelengths just redward of the Lyman break, and ...
Yoshihisa Asada, Guillaume Desprez, Chris J. Willott, Marcin Sawicki, Maruša Bradač, Gabriel Brammer, Florian Dubath, Kartheik G. Iyer, Nicholas S. Martis, Adam Muzzin, Gaël Noirot, Stéphane Paltani, Ghassan T. E. Sarrouh, Anishya Harshan, Vladan Markov   +14 more
doaj   +1 more source

Considering light-matter interactions in the Friedmann equations. [PDF]

Proc Math Phys Eng Sci, 2022
Vavryčuk V.
europepmc   +1 more source

Probing the thermal history of the Intergalactic Medium with

, 2007
The Doppler parameter distribution of Lyff absorption is calculated for a set of different reionization histories. The differences in temperature between different reionization histories are as large as a factor three to four depending on the spectrum of
Martin G. Haehnelt, Absorption Lines, Matthias Steinmetz   +2 more
core  

The Signatures of Density Fluctuations and Mixing Gas in Circumgalactic Absorption Systems

The Astrophysical Journal
We investigate the prospects for detecting and constraining density and temperature inhomogeneities in the circumgalactic medium using absorption measurements of metal ions.
Yakov Faerman, Daniel R. Piacitelli, Matthew McQuinn, Jessica K. Werk   +3 more
doaj   +1 more source

Scintillation in the InterGalactic Medium [PDF]

, 2011
The scintillation phenomenon consists in a light wave, coming from a compact enough source, that, passing through a ionized inhomogeneous medium, is subject to a random variation of the refraction index, and thus suffers multiple phase changes which lead
PALLOTTINI, ANDREA
core  

MUSEQuBES: Physical Conditions, Origins, and Multielement Abundances of the Circumgalactic Medium of an Isolated, Star-forming Dwarf Galaxy at z = 0.57

The Astrophysical Journal Letters
In dwarf galaxy models, outflows expel metal-enriched interstellar medium (ISM) into the circumgalactic medium (CGM) to reproduce their observed low metallicities, but measurements of dwarf CGM properties are scarce.
Sean D. Johnson, Nishant Mishra, Sowgat Muzahid, Gwen C. Rudie, Fakhri S. Zahedy, Zhijie Qu, Claude-André Faucher-Giguère, Jonathan Stern, Jennifer I-Hsiu Li, Elise Fuller, Sebastiano Cantalupo, Hsiao-Wen Chen, Ahmad Kadri, Suyash Kumar, Zhuoqi (Will) Liu, Gregory Walth   +15 more
doaj   +1 more source

Continuous solutions of cosmic-rays and waves in astrophysical environments. [PDF]

Sci Rep, 2023
Irshad K, Ramzan B, Qazi SNA, Areeb F, Rasheed A, Jamil M.   +5 more
europepmc   +1 more source

Simulating the chemical enrichment of the intergalactic medium [PDF]

, 2010
Over the past few decades, it has become evident that the vast amount of space that exists between galaxies contains trace amounts of elements heavier than helium ('metals' in astronomical terms).
Wiersma, R.P.C., Wiersma, R.
core  

Galaxy Underdensities Host the Clearest Intergalactic Medium Lyα Transmission and Indicate Anisotropic Reionization

The Astrophysical Journal
How galaxies drive reionization and what governs its geometry remain fundamental questions. We present JWST/NIRCam wide-field slitless spectroscopy (WFSS) observations toward two of the most Ly α -transmissive QSO sight lines near the end of reionization.
Yongda Zhu, George D. Becker, Anson D’Aloisio, Ryan Endsley, Nakul Gangolli, Christopher Cain, Charlotte A. Mason, Seyedazim Hashemi, Hui Hong   +8 more
doaj   +1 more source

Neutrino communication, intergalactic transit, and Astrobiology. [PDF]

Bioinformation, 2022
Shapshak P.
europepmc   +1 more source