Results 121 to 130 of about 1,900,467 (218)

Statistical Properties of Cold Streams in Massive Star-forming Halos in TNG50

The Astrophysical Journal
Cold, dense streams of gas are predicted to penetrate deeply into massive (≳10 ^12 M _⊙ ) halos at cosmic noon ( z  ∼ 4–2), fueling galaxies to sustain high star formation rates.
Isabel Medlock, Daisuke Nagai, Nir Mandelker, Volker Springel, Frank C. van den Bosch, Elad Zinger, Barry T. Chiang   +6 more
doaj   +1 more source

The multiple coherence scales of C IV at cosmic noon

Astronomy & Astrophysics
The spatial and kinematic structure of the circumgalactic medium remains poorly constrained observationally. We computed the clustering of C IV absorption systems at cosmic noon using quasar pairs.
Cortés-Muñoz H., Lopez S., Tejos N., Krogager J.-K., Zamora D., Cuellar R., Anshul P., Urbina F., Afruni A.   +8 more
doaj   +1 more source

Considering light-matter interactions in Friedmann equations based on the conformal FLRW metric. [PDF]

J Adv Res, 2023
Vavryčuk V.
europepmc   +1 more source

The Ionization History of The Intergalactic Medium:

, 2003
The funded project seeked a unified description of the ionization, physical structure, and evolution of the intergalactic medium (IGM) and quasar intervening absorption systems.
Madau, Piero
core  

Search for emission from warm-hot intergalactic medium

, 2010
About half of the baryons in the local Universe are not yet observed and are thought to reside in the intergalactic medium at temperatures of 0.1-10 million K and densities of 10-6 -10-4 cm-3 . This is called warm-hot intergalactic medium (WHIM). In this
Ohashi, Takaya, Sato, Kosuke, Mitsuishi, Ikuyuki, Ursino, Eugenio, BRANCHINI, ENZO FRANCO, Corsi, Alessandra, Takei, Yoh   +6 more
core   +2 more sources

Cascaded Gamma-Ray Emission Associated with the KM3NeT Ultrahigh-energy Event KM3-230213A

The Astrophysical Journal Letters
A neutrino-like event with an energy of ∼220 PeV was recently detected by the KM3NeT/ARCA telescope. If this neutrino comes from an astrophysical source or from the interaction of an ultrahigh-energy cosmic ray in the intergalactic medium, the ultrahigh ...
Ke Fang, Francis Halzen, Dan Hooper
doaj   +1 more source

The eROSITA Final Equatorial-Depth Survey (eFEDS)

Astronomy & Astrophysics
Context. This is the second paper in a series exploring the X-ray properties of galaxy clusters optically selected by the Subaru Hyper Suprime-Cam (HSC) survey, using data from the SRG/eROSITA Final Equatorial-Depth Survey (eFEDS). Aims.
Nguyen-Dang N. T., Ota N., Okabe N., Oguri M., Mitsuishi I., Reiprich T. H., Pacaud F., Bulbul E., Sanders J. S., Brüggen M., Liu A., Tsujita Y., Chiu I., Ghirardini V., Grandis S., Klein M., Migkas K., Miyatake H., Miyazaki S., Ramos-Ceja M. E.   +19 more
doaj   +1 more source

Measuring the temperature of the intergalactic medium

, 1999
Numerical simulations indicate that the smooth, photoionized intergalactic medium (IGM) responsible for the low column density Lyman-alpha forest follows a well defined temperature-density relation.
Theuns, T., Theuns, Tom, Schaye, J., Leonard, A., Efstathiou, G.   +4 more
core   +1 more source

A New Approach for Constraining Large-scale Temperature Fluctuations in the Intergalactic Medium

The Astrophysical Journal
The reionization of helium is thought to occur at 2.5 ≲ z ≲ 4, marking the last phase transition and final global heating event of the intergalactic medium (IGM).
Saba Etezad-Razavi, Sarah E. I. Bosman, Frederick B. Davies   +2 more
doaj   +1 more source

When Does the Intergalactic Medium Become Enriched?

, 2007
We use cosmological hydrodynamic simulations including galactic feedback based on observations of local starbursts to find a self-consistent evolutionary model capable of fitting the observations of the intergalactic metallicity history as traced by C ...
K. Finlator, R. Davé, B.D. Oppenheimer
core   +1 more source