Results 11 to 20 of about 355,593 (244)
How primordial magnetic fields shrink galaxies [PDF]
Monthly Notices of the Royal Astronomical Society, 2020 As one of the prime contributors to the interstellar medium energy budget, magnetic fields naturally play a part in shaping the evolution of galaxies.
S. Martin-Alvarez +3 more
semanticscholar +4 more sources
BLACK HOLE FORMATION IN PRIMORDIAL GALAXIES: CHEMICAL AND RADIATIVE CONDITIONS [PDF]
The Astrophysical Journal, 2010 In massive primordial galaxies, the gas may directly collapse and form a single central massive object if cooling is suppressed. H2 line cooling can be suppressed in the presence of a strong soft-ultraviolet radiation field, but the role played by other ...
D. Schleicher, M. Spaans, S. Glover
semanticscholar +6 more sources
Accelerating Early Massive Galaxy Formation with Primordial Black Holes [PDF]
The Astrophysical Journal Letters, 2022 Recent observations with JWST have identified several bright galaxy candidates at z ≳ 10, some of which appear unusually massive (up to ∼1011 M ⊙).
Boyuan Liu, V. Bromm
semanticscholar +4 more sources
ARE (PSEUDO)BULGES IN ISOLATED GALAXIES ACTUALLY PRIMORDIAL RELICS? [PDF]
The Astrophysical Journal, 2014 We present structural parameters and (g − i) bulge/disk colors for a large sample (189) of isolated AMIGA galaxies. The structural parameters of bulges were derived from the two-dimensional bulge/disk/bar decomposition of Sloan Digital Sky Survey i-band ...
M. F. Lorenzo +9 more
semanticscholar +5 more sources
Blue compact galaxies and the primordial 4Helium abundance [PDF]
Symposium - International Astronomical Union, 2000 Blue compact galaxies (BCG) are ideal objects in which to derive the primordial 4He abundance because they are chemically young and have not had a significant stellar He contribution.
Izotov, Yuri I., Thuan, Trinh Xuan
core +2 more sources
Star Formation for Predictive Primordial Galaxy Formation [PDF]
, 2015 The elegance of inflationary cosmology and cosmological perturbation theory ends with the formation of the first stars and galaxies, the initial sources of light that launched the phenomenologically rich process of cosmic reionization. Here we review the
Milosavljevic, Milos +1 more
core +2 more sources
Observed Evidence for the Primordial Origin of Galaxy Sizes
The Astrophysical JournalWe present observational evidence supporting the scenario that the protogalactic angular momenta play an important role in molding the optical sizes of present galaxies. Analyzing the NASA-Sloan Atlas catalog in the redshift range of 0.02 ≤ z
Jun-Sung Moon, Jounghun Lee
doaj +3 more sources
Introducing SPHINX-MHD: the impact of primordial magnetic fields on the first galaxies, reionization, and the global 21-cm signal [PDF]
, 2021 We present the first results from SPHINX-MHD, a suite of cosmological radiation-magnetohydrodynamics simulations designed to study the impact of primordial magnetic fields (PMFs) on galaxy formation and the evolution of the intergalactic medium (IGM ...
H. Katz +12 more
semanticscholar +1 more source
Probing Primordial Chirality with Galaxy Spins [PDF]
Physical Review Letters, 2020 Chiral symmetry is maximally violated in weak interactions, and such microscopic asymmetries in the early Universe might leave observable imprints on astrophysical scales without violating the cosmological principle. In this Letter, we propose a helicity measurement to detect primordial chiral violation.
Hao-Ran Yu +7 more
openaire +3 more sources
Primordial gravitational waves from galaxy intrinsic alignments [PDF]
Journal of Cosmology and Astroparticle Physics, 2020 24+23 pages, 6 figures, code available at https://gitlab.com/mbiagetti/tensor_fossil, updated to published ...
Biagetti, M., Orlando, G.
openaire +5 more sources