Results 1 to 10 of about 1,993,973 (222)

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

The 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, Bahareh S. Salmasi, Seyed Sajad Tabasi, Javad T. Firouzjaee   +3 more
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Multiphase Gas Interactions on Subarcsec Scales in the Shocked Intergalactic Medium of Stephan’s Quintet with JWST and ALMA

The 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, P. Guillard, Bjorn Emonts, Francois Boulanger, Aditya Togi, William T. Reach, Kathleen Alatalo, M. Cluver, T. Diaz Santos, P.-A. Duc, S. Gallagher, P. Ogle, E. O’Sullivan, K. Voggel, C. K. Xu   +14 more
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(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

The 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, Jinyi Yang, Xiaohui Fan, Feige Wang, Eduardo Bañados, Fuyan Bian, Frederick B. Davies, Anna-Christina Eilers, Emanuele Paolo Farina, Joseph F. Hennawi, Fabio Pacucci, Bram Venemans, Fabian Walter   +12 more
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The Origin of Intergalactic Light in Compact Groups of Galaxies

Universe, 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

Galaxies and the intergalactic medium: evolutionary interrelations

Odessa Astronomical Publications, 2017
During their life galaxies exchange in matter and energy with the intergalactic medium (IGM). This complex process is a most important factor in galactic evolution as well in evolution of the IGM.
B. M. Shustov
doaj   +1 more source

Cosmic neutrino flux and spin flavor oscillations in intergalactic medium

Physics Letters B, 2023
The ultra high energy (UHE) cosmic neutrinos are expected to play a pivotal role in the disquisition of physics beyond the standard model of particle physics as well as serve as an ideal cosmic messengers.
Ashutosh Kumar Alok, Neetu Raj Singh Chundawat, Arindam Mandal   +2 more
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PECULIARITIES OF MIXING METALS IN INTERGALACTIC AND INTERSTELLAR MEDIA

Odessa Astronomical Publications, 2008
We review the current status of the problem of metal mixing in the intergalactic and interstellar media. We give simple arguments for inefficiency of mixing metals because of a saturation of hydrodynamic (Rayleigh-Taylor and Kelvin-Helmholz ...
S. Yu. Dedikov, Yu. A. Shchekinov, E. O. Vasiliev   +2 more
doaj   +1 more source

Systematic Bias in Ionizing Radiation Escape Fraction Measurements from Foreground Large-scale Structures

The Astrophysical Journal
We investigate the relationship between the Ly α forest transmission in the intergalactic medium (IGM) and the environmental density of galaxies, focusing on its implications for the measurement of ionizing radiation escape fractions.
Claudia M. Scarlata, Wanjia Hu, Matthew J. Hayes, S. Taamoli, Ali A. Khostovan, C. M. Casey, Andreas L. Faisst, Jeyhan S. Kartaltepe, Yu-Heng Lin, Mara Salvato, Marc Rafelski   +10 more
doaj   +1 more source

Investigating Ionization in the Intergalactic Medium

The Astrophysical Journal
The intergalactic medium (IGM) contains >50% of the baryonic mass of the Universe, yet the mechanisms responsible for keeping the IGM ionized have not been fully explained.
Brad Koplitz, Anjali Ramesh, Sanchayeeta Borthakur   +2 more
doaj   +1 more source

Cosmic Reionization on Computers: The Evolution of the Ionizing Background and Mean Free Path

The Astrophysical Journal
Observations of the end stages of reionization indicate that at z  ≈ 5–6, the ionizing background is not uniform and the mean free path (MFP) changes drastically.
Jiawen Fan, Huanqing Chen, Camille Avestruz, Affan Khadir   +3 more
doaj   +1 more source