Results 81 to 90 of about 1,900,467 (218)

The intergalactic medium

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

Turbulence production and turbulent pressure support in the intergalactic medium

, 2011
The injection and evolution of turbulence in the intergalactic medium is studied by means of mesh-based hydrodynamical simulations, including a subgrid-scale (SGS) model for small-scale unresolved turbulence.
J. Merklein, W. Schmidt, L. Iapichino, Iapichino, L., J. C. Niemeyer, Schmidt, W., Niemeyer, J. C., Merklein, J.   +7 more
core   +1 more source

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

The 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, Anna-Christina Eilers, Huanqing Chen, Sindhu Satyavolu, Girish Kulkarni, Robert A. Simcoe, Laura C. Keating, Martin G. Haehnelt, Eduardo Bañados   +8 more
doaj   +1 more source

Detecting metal enrichment of the intergalactic medium with the two-point correlation function of the flux

Astronomy & Astrophysics
Context. The distribution and the abundance of metals in the intergalactic medium (IGM) have strong implications for galaxy formation and evolution models. The ionic transitions of heavy elements in quasar spectra can be used to probe both the mechanisms
Di Stefano S., D’Odorico V., Cupani G., Milaković D., Trost A., Cristiani S., Viel M., Carswell R. F.   +7 more
doaj   +1 more source

The thermal state of the intergalactic medium 9-12 billion years ago

, 2015
This work presents an investigation of the thermal state of the tenuous gas between galaxies, called the intergalactic medium. It is focused on measuring the temperature evolution of this cosmic gas during the second reionization phase of the Universe ...
Elisa Boera (19009145)
core   +1 more source

Future instrumentation for the study of the warm-hot intergalactic medium

, 2020
We briefly review capabilities and requirements for future instrumentation in UV- and X-ray astronomy that can contribute to advancing our understanding of the diffuse, highly ionised intergalactic ...
Ohashi, Takaya, Bykov, Andrei, Paerels, Frits, Kaastra, Jelle, Richter, Philipp (Prof. Dr.), Nevalainen, Jukka   +5 more
core   +1 more source

MeV Cosmic-Ray Electrons Modify the TeV Pair-beam Plasma Instability

The Astrophysical Journal
Relativistic pair beams created in the intergalactic medium (IGM) by TeV gamma rays from blazars are expected to produce a detectable GeV-scale electromagnetic cascade, but the cascade component is absent in the spectra of many hard-spectrum TeV-emitting
Mahmoud Alawashra, Yuanyuan Yang, Christopher M. Hirata, Heyang Long, Martin Pohl   +4 more
doaj   +1 more source

Selikung Jurnal Medium [PDF]

, 2019
Selikung Jurnal ...
Medium, Jurnal
core  

Revised Constraints on the Fast Radio Burst Population from the First CHIME/FRB Catalog

The Astrophysical Journal
In this paper, we investigate the fast radio burst (FRB) population using the first CHIME/FRB catalog. We first reconstruct the extragalactic dispersion measure–redshift relation (DM _E – z relation) from well-localized FRBs, then use it to infer the ...
Hai-Nan Lin, Rui Zou
doaj   +1 more source

Physics of the interstellar and intergalactic medium

, 2010
This is a comprehensive and richly illustrated textbook on the astrophysics of the interstellar and intergalactic medium--the gas and dust, as well as the electromagnetic radiation, cosmic rays, and magnetic and gravitational fields, present between the ...
Draine, Bruce T., Draine, Bruce T
core