Results 21 to 30 of about 30,791 (258)
Relationship of Retinal Vessel Caliber with Age‐Related Macular Degeneration
Journal of Ophthalmology, Volume 2022, Issue 1, 2022., 2022 Purpose. Evaluate the relationship between retinal vascular caliber and age‐related macular degeneration (AMD) severity or progression. Methods. A retrospective secondary analysis of 1172 fundus photographs and clinical data from the prospective Age‐Related Eye Disease Study (AREDS).
Sara Toulouie +5 more
wiley +1 more source
The trouble with STEAM and why we use it anyway
Science Education, Volume 105, Issue 2, Page 209-231, March 2021., 2021 Abstract As an emerging field of theory, research, and practice, STEAM (Science, Technology, Engineering, Arts, and Mathematics) has received attention for its efforts to incorporate the arts into the rubric of STEM (Science, Technology, Engineering, and Mathematics) learning.
Sam Mejias +10 more
wiley +1 more source
The Astrophysical Journal, 2023 Cosmic reionization was the last major phase transition of hydrogen from neutral to highly ionized in the intergalactic medium (IGM). Current observations show that the IGM is significantly neutral at z > 7 and largely ionized by z ∼ 5.5.
Xiangyu Jin +12 more
doaj +1 more source
On the Electromagnetic Vacuum Origins of Dark Energy, Dark Matter, and Astrophysical Jets
Advances in High Energy Physics, Volume 2021, Issue 1, 2021., 2021 We use a semiclassical version of the Nexus paradigm of quantum gravity in which the quantum vacuum at large scales is dominated by the second quantized electromagnetic field to demonstrate that a virtual photon field can affect the geometric evolution of Einstein manifolds or Ricci solitons.
Stuart Marongwe, Saibal Ray
wiley +1 more source
The Origin of Intergalactic Light in Compact Groups of Galaxies
Universe, 2021 We investigate the origin of intergalactic light (IGL) in close groups of galaxies. IGL is hypothesized to be the byproduct of interaction and merger within compact groups.
Mark J. Henriksen
doaj +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 ...
openaire +2 more sources
Lower Metal Enrichment of Virialized Gas in Minihalos [PDF]
, 2007 We differentiate between the metal enrichment of the gas in virialized minihalos and that of the intergalactic medium at high redshift, pertinent to cosmological reionization, with the initial expectation that gas in the high density regions within ...
Cen, Renyue, Riquelme, Mario A.
core +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
When Does the Intergalactic Medium Become Enriched? [PDF]
, 2006 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 IV
Davé, Romeel +2 more
core +2 more sources
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