Joint inference on the redshift distribution of fast radio burst and on the intergalactic baryon content [PDF]
, 2021 Context: Fast radio bursts are transient radio pulses of extragalactic origin. Their dispersion measure is indicative of the baryon content in the ionized intergalactic medium between the source and the observer. However, inference using unlocalized fast radio bursts is degenerate to the distribution of redshifts of host galaxies.
arxiv +1 more source
Consistent modelling of the meta-galactic UV background and the thermal/ionization history of the intergalactic medium [PDF]
Monthly notices of the Royal Astronomical Society, 2018 Recent observations suggest that hydrogen reionization ends late (|$z$| ≃ 6) and proceeds quickly. We present here a new model of the meta-galactic ultraviolet/X-ray background (UVB) that is consistent with this. It adopts the most recent determinations
E. Puchwein +3 more
semanticscholar +1 more source
The Intergalactic Medium [PDF]
Highlights of Astronomy, 1980 Observations of Lyman-α absorption show that any gas present in the space between clusters of galaxies must be hot, and x-ray observations indicate that there may be present gas whose temperature at low redshifts is 4 × 108 K and whose density is about half the critical value for cosmology.
openaire +2 more sources
Revealing Reionization with the Thermal History of the Intergalactic Medium: New Constraints from the Lyα Flux Power Spectrum [PDF]
Astrophysical Journal, 2018 We present a new investigation of the thermal history of the intergalactic medium (IGM) during and after reionization using the Lyα forest flux power spectrum at 4.0 ≲ z ≲ 5.2.
E. Boera, G. Becker, J. Bolton, F. Nasir
semanticscholar +1 more source
The physics of the intergalactic medium [PDF]
Reviews of Modern Physics, 2009 69 pages; accepted version to appear in Reviews of Modern Physics; text and equation typos corrected; all figures ...
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Dipole distortions in the intergalactic medium [PDF]
Monthly Notices of the Royal Astronomical Society, 2019 Abstract Baryonic feedback can significantly modify the spatial distribution of matter on small scales and create a bulk relative velocity between the dominant cold dark matter and the hot gas. We study the consequences of such bulk motions using two high-resolution hydrodynamic simulations, one with no feedback and one with very strong ...
Francisco Villaescusa-Navarro +2 more
openaire +2 more sources
The Opacity of the Intergalactic Medium Measured along Quasar Sightlines at z ∼ 6 [PDF]
Astrophysical Journal, 2018 We publicly release a new sample of 34 medium resolution quasar spectra at 5.77 ≤ zem ≤ 6.54 observed with the Echellette Spectrograph and Imager on the Keck telescope.
A. Eilers, F. Davies, J. Hennawi
semanticscholar +1 more source
The Physical Origins of the Identified and Still Missing Components of the Warm–Hot Intergalactic Medium: Insights from Deep Surveys in the Field of Blazar 1ES1553+113 [PDF]
Astrophysical Journal, 2019 The relationship between galaxies and the state/chemical enrichment of the warm–hot intergalactic medium (WHIM) expected to dominate the baryon budget at low-z provides sensitive constraints on structure formation and galaxy evolution models.
S. Johnson +13 more
semanticscholar +1 more source
How do atomic code uncertainties affect abundance measurements in the intracluster medium?
Astronomische Nachrichten, Volume 341, Issue 2, Page 203-209, February 2020., 2020 Abstract Accurate chemical abundance measurements of X‐ray‐emitting atmospheres pervading massive galaxies, galaxy groups, and clusters provide essential information on the star formation and chemical enrichment histories of these large‐scale structures.
François Mernier +8 more
wiley +1 more source
Simulations of the Intergalactic Medium [PDF]
Symposium - International Astronomical Union, 2005 I present an epochal review of baryons in the intergalactic medium (IGM), from the reionization epoch until today. Recent observations indicate a protracted period of reionization, suggesting multiple populations of reionizers; detection of these z ≳ 6 sources is a key goal that is now coming within reach.
openaire +3 more sources