Results 91 to 100 of about 30,791 (258)
Behavior of the Lyα Damping Wings as a Function of Reionization Topology
The Astrophysical JournalThe damping wing signatures in high-redshift quasars have proven instrumental in studying the epoch of reionization. With the upcoming Euclid mission set to discover many more quasars, it is crucial to explore what this new set of quasars might reveal ...
Yash M. Sharma +4 more
doaj +1 more source
The SSA22 H i Tomography Survey (SSA22-HIT). I. Data Set and Compiled Redshift Catalog
The Astronomical Journal, 2023 We conducted a deep spectroscopic survey, named SSA22-HIT, in the SSA22 field with the DEep Imaging MultiObject Spectrograph (DEIMOS) on the Keck telescope, designed to tomographically map high- z H i gas through analysis of Ly α absorption in background
Ken Mawatari +18 more
doaj +1 more source
Highly-Ionized Oxygen Absorbers in the Intergalactic Medium
, 2004 Recent ultraviolet and X-ray observations of intergalactic OVI and OVII absorption systems along lines of sight to bright quasars have opened a new window onto the ``warm-hot intergalactic medium'' (WHIM).
Furlanetto, Steven +2 more
core +3 more sources
How Did the IGM Become Enriched? [PDF]
, 2006 The enrichment of the intergalactic medium with heavy elements is a process that lies at the nexus of poorly-understood aspects of physical cosmology.
Aguirre, Anthony, Schaye, Joop
core +3 more sources
The Astrophysical JournalGas flows between galaxies and the circumgalactic medium play a crucial role in galaxy evolution. When ionized by a quasar, these gas flows can be directly traced as giant nebulae. We present a study of a giant nebula around a radio-loud quasar, 3C 57 at
Zhuoqi (Will) Liu +13 more
doaj +1 more source
Cosmological Blast Waves and the Intergalactic Medium [PDF]
The Astrophysical Journal, 1996 Winds from protogalactic starbursts and quasars can drive shocks that heat, ionize, and enrich the intergalactic medium. The Sedov-Taylor solution for point-like explosions adequately describes these blastwaves early in their development, but as the time since the explosion ($t - t_1$) approaches the age of the universe ($t$), cosmological effects ...
openaire +4 more sources
Intergalactic Medium Rotation Measure of Primordial Magnetic Fields
The Astrophysical JournalThe Faraday rotation effect, quantified by the rotation measure (RM), is a powerful probe of the large-scale magnetization of the Universe—tracing magnetic fields not only on galaxy and galaxy cluster scales but also in the intergalactic medium (IGM ...
Salome Mtchedlidze +7 more
doaj +1 more source
The Multiphase Intergalactic Medium towards PKS 2155-304
, 2003 We study the cluster of H I and O VI absorption systems and the claimed detection of O VIII absorption from the intergalactic medium at z ~ 0.0567, associated with a group of galaxies toward the BL Lac object PKS 2155-304. As measured by spectrographs on
Giroux, Mark +2 more
core +2 more sources
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 +2 more
doaj
Do Cosmic Rays Heat the Early Intergalactic Medium?
, 2017 Cosmic rays (CRs) govern the energetics of present-day galaxies and might have also played a pivotal role during the Epoch of Reionization. In particular, energy deposition by low-energy ($E \lesssim 10$ MeV) CRs accelerated by the first supernovae ...
Ciardi, Benedetta +5 more
core +1 more source