Results 51 to 60 of about 30,791 (258)
The Fractal Geometry of the Cosmic Web and Its Formation
Advances in Astronomy, Volume 2019, Issue 1, 2019., 2019 The cosmic web structure is studied with the concepts and methods of fractal geometry, employing the adhesion model of cosmological dynamics as a basic reference. The structures of matter clusters and cosmic voids in cosmological N‐body simulations or the Sloan Digital Sky Survey are elucidated by means of multifractal geometry.
Jose Gaite, Geza Kovacs
wiley +1 more source
Radiative transfer through the Intergalactic Medium
, 2003 We use a probabilistic method to compute the propagation of an ionization front corresponding to the re-ionization of the intergalactic medium in a LCDM cosmology, including both hydrogen and helium.
Bolton, James +2 more
core +2 more sources
Primordial non-Gaussianities in the intergalactic medium [PDF]
Monthly Notices of the Royal Astronomical Society, 2009 10 pages, 7 figures.
Viel, Matteo +5 more
openaire +7 more sources
A New Limit on Intergalactic Magnetic Fields on Subkiloparsec Scales from Fast Radio Bursts
The Astrophysical Journal Letters, 2023 We use the measured scattering timescales of fast radio bursts (FRBs) from the CHIME catalog to derive an upper limit on the magnetic field on subkiloparsec scales in the intergalactic medium (IGM).
Hamsa Padmanabhan, Abraham Loeb
doaj +1 more source
Gamma‐Ray Burst Prompt Correlations
Advances in Astronomy, Volume 2018, Issue 1, 2018., 2018 The mechanism responsible for the prompt emission of gamma‐ray bursts (GRBs) is still a debated issue. The prompt phase‐related GRB correlations can allow discriminating among the most plausible theoretical models explaining this emission. We present an overview of the observational two‐parameter correlations, their physical interpretations, and their ...
M. G. Dainotti +3 more
wiley +1 more source
Metal enrichment of the intergalactic medium [PDF]
Monthly Notices of the Royal Astronomical Society, 1998 Accepted for publication in the MNRAS. Additional material including color gif plots and MPEG movies is available at http://astron.berkeley.edu/~gnedin/metigm ...
openaire +4 more sources
A hot intergalactic medium? [PDF]
Monthly Notices of the Royal Astronomical Society, 1986 On a de nouveau examine l'hypothese d'un milieu intergalactique chaud produisant le fond RX 5-200 keV, en tenant compte des corrections relativistes pour l'emissivite du gaz, la thermodynamique et la diffusion ...
P. W. Guilbert, A. C. Fabian
openaire +2 more sources
Gamma‐Ray Bursts: A Radio Perspective
Advances in Astronomy, Volume 2016, Issue 1, 2016., 2016 Gamma‐ray bursts (GRBs) are extremely energetic events at cosmological distances. They provide unique laboratory to investigate fundamental physical processes under extreme conditions. Due to extreme luminosities, GRBs are detectable at very high redshifts and potential tracers of cosmic star formation rate at early epoch. While the launch of Swift and
Poonam Chandra, WeiKang Zheng
wiley +1 more source
Numerical simulations of the Warm-Hot Intergalactic Medium [PDF]
, 2008 In this paper we review the current predictions of numerical simulations for the origin and observability of the warm hot intergalactic medium (WHIM), the diffuse gas that contains up to 50 per cent of the baryons at z~0.
A. Finoguenov +84 more
core +2 more sources
The Astrophysical JournalWe 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 +10 more
doaj +1 more source