Results 1 to 10 of about 643 (165)

The Evolution of the Intergalactic Medium [PDF]

open access: yesAnnual Review of Astronomy and Astrophysics, 2016
55 pages, 13 figures; published in the Annual Review of Astronomy and ...
Matthew Mcquinn
exaly   +3 more sources

Turbulence in the Intergalactic Medium [PDF]

open access: yesMonthly Notices of the Royal Astronomical Society, 2011
We study supernova-driven galactic outflows as a mechanism for injecting turbulence in the intergalactic medium (IGM) far from galaxies. To this aim we follow the evolution of a 10^13 Msun galaxy along its merger tree, with carefully calibrated prescriptions for star formation and wind efficiencies.
Evoli, Carmelo, FERRARA, ANDREA
openaire   +3 more sources

A New Constraint on the Simulation of the Intergalactic Medium through the Evolution of the Neutral Hydrogen Fraction in the Epoch of Reionization

open access: yesThe Astrophysical Journal, 2023
The thermal history of the intergalactic medium is full of extremely useful data in the field of astrophysics and cosmology. In other words, by examining this environment in different redshifts, the effects of cosmology and astrophysics can be observed ...
S. Mobina Hosseini   +3 more
doaj   +1 more source

Metals in the intergalactic medium [PDF]

open access: yesAstronomy & Astrophysics, 2004
We use high spectral resolution (R=45000) and high signal-to-noise ratio (S/N \~ 35-70 per pixel) spectra of 19 high-redshift (2.11. Our observations strongly suggest that the CIV/HI ratio decreases with decreasing tau(HI) with log[tau(CIV)]=1.3xlog[tau(HI)]-3.2. We do not detect CIV absorption statistically associated with gas of tau(HI)<1. However,
Aracil, Bastien   +3 more
openaire   +3 more sources

Multiphase Gas Interactions on Subarcsec Scales in the Shocked Intergalactic Medium of Stephan’s Quintet with JWST and ALMA

open access: yesThe Astrophysical Journal, 2023
We combine James Webb Space Telescope (JWST) and Hubble Space Telescope imaging with Atacama Large Millimeter Array CO(2–1) spectroscopy to study the highly turbulent multiphase intergalactic medium (IGM) in Stephan’s Quintet on 25–150 pc scales ...
P. N. Appleton   +14 more
doaj   +1 more source

The Intergalactic Medium [PDF]

open access: yesSymposium - International Astronomical Union, 1982
The density of intergalactic gas may be an important parameter in the formation of extended radio sources. It may range from ∼ 0.1 particle cm−3 in the centres of some rich clusters of galaxies down to 10−8cm−3 or less in intercluster space. The possible influence of the intracluster gas surrounding NGC 1275 on its radio emission is discussed, and the ...
A. C. Fabian, A. K. Kembhavi
openaire   +1 more source

(Nearly) Model-independent Constraints on the Neutral Hydrogen Fraction in the Intergalactic Medium at z ∼ 5–7 Using Dark Pixel Fractions in Lyα and Lyβ Forests

open access: yesThe Astrophysical Journal, 2023
Cosmic reionization was the last major phase transition of hydrogen from neutral to highly ionized in the intergalactic medium (IGM). Current observations show that the IGM is significantly neutral at z > 7 and largely ionized by z ∼ 5.5.
Xiangyu Jin   +12 more
doaj   +1 more source

The physics of the intergalactic medium [PDF]

open access: yesReviews of Modern Physics, 2009
69 pages; accepted version to appear in Reviews of Modern Physics; text and equation typos corrected; all figures ...
openaire   +2 more sources

On the supernova heating of the intergalactic medium [PDF]

open access: yesMonthly Notices of the Royal Astronomical Society, 2000
submitted to MNRAS, LaTeX, 15 pages, 5 figures, 2 ...
Kravtsov, Andrey V., Yepes, Gustavo
openaire   +2 more sources

The Origin of Intergalactic Light in Compact Groups of Galaxies

open access: yesUniverse, 2021
We investigate the origin of intergalactic light (IGL) in close groups of galaxies. IGL is hypothesized to be the byproduct of interaction and merger within compact groups.
Mark J. Henriksen
doaj   +1 more source

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