Results 81 to 90 of about 1,993,973 (222)

Utilizing the Dispersion Measure of Fast Radio Bursts to Probe the Intergalactic Medium Turbulence

open access: yesThe Astrophysical Journal
Extragalactic fast radio bursts (FRBs) have emerged as powerful probes of turbulence within the intergalactic medium (IGM), a phenomenon that plays a crucial role in various cosmological and astrophysical processes. In this study, we employ the structure
Rui-Nan Li   +5 more
doaj   +1 more source

The X-ray flux from the warm-hot intergalactic medium

open access: yes, 2007
In the past years significant efforts have been focused on describing the evolution and structure of the Universe. One of the big open questions in cosmology is "Where is the baryonic mass"?
Ursino, Eugenio
core   +1 more source

Cosmological Blast Waves and the Intergalactic Medium [PDF]

open access: yesThe Astrophysical Journal, 1996
Winds from protogalactic starbursts and quasars can drive shocks that heat, ionize, and enrich the intergalactic medium. The Sedov-Taylor solution for point-like explosions adequately describes these blastwaves early in their development, but as the time since the explosion ($t - t_1$) approaches the age of the universe ($t$), cosmological effects ...
openaire   +2 more sources

Chronicling the Reionization History at 6 ≲ z ≲ 7 with Emergent Quasar Damping Wings

open access: yesThe Astrophysical Journal
The spectra of high-redshift ( z ≳ 6) quasars contain valuable information on the progression of the Epoch of Reionization. At redshifts z < 6, the observed Lyman-series forest shows that the intergalactic medium is nearly ionized, while at z > 7 the ...
Dominika Ďurovčíková   +8 more
doaj   +1 more source

The intergalactic medium

open access: yes
The intergalactic medium (IGM) comprises all the matter that lies between galaxies. Hosting the vast majority ($\gtrsim 90\%$) of the baryons in the Universe, the IGM is a critical reservoir and probe for cosmology and astrophysics, providing insights into large-scale structure formation and galaxy evolution.
openaire   +2 more sources

Dynamical evolution of high velocity clouds in the intergalactic medium

open access: yes, 2002
$\ion{H}{i}$ observations of high-velocity clouds (HVCs) indicate, that they are interacting with their ambient medium. Even clouds located in the very outer Galactic halo or the intergalactic space seem to interact with their ambient medium.
G. T. Birk, C. Konz, C. Brüns
core   +1 more source

Bird's-eye View of Molecular Gas across Stephan's Quintet Galaxy Group and Intragroup Medium

open access: yesThe Astrophysical Journal
We present the large-scale distribution and kinematics of cold molecular gas across the compact galaxy group Stephan’s Quintet, based on CO(2–1) observations performed with the Atacama Compact Array (ACA) and CO(1–0) data from the Combined Array for ...
B. H. C. Emonts   +17 more
doaj   +1 more source

Probing the thermal history of the Intergalactic Medium with

open access: yes, 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   +2 more
core  

Reproduction package for the publication 'Prospects for detecting the circum- and intergalactic medium in X-ray absorption using the extended intracluster medium as a backlight'

open access: yes, 2023
<p>The uploaded files can be used to reproduce the dataset and figures in the paper<strong> Prospects for detecting the circum- and intergalactic medium in X-ray absorption using the extended intracluster medium as a backlight</strong> ...
Štofanová, Lýdia
core   +1 more source

Stacked Hybrid Recurrent Convolutional Neural Network Reconstruction of X-Ray Influence on 21 cm Brightness Temperature

open access: yesThe Astrophysical Journal
X-ray photons substantially affect the thermal and ionization states of the intergalactic medium during the epoch of reionization (EoR), thereby significantly influencing the 21 cm line observables, such as its sky-averaged (global) brightness ...
S. Mobina Hosseini, Bahareh S. Salmasi
doaj   +1 more source

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