Results 11 to 20 of about 55,785 (258)
Turbulent viscosity in clumpy accretion disks [PDF]
Astronomy and Astrophysics, 2002 The equilibrium state of a turbulent clumpy gas disk is analytically investigated. The disk consists of distinct self-gravitating clouds. Gravitational cloud-cloud interactions transfer energy over spatial scales and produce a viscosity, which allows mass accretion in the gas disk.
T Beckert
exaly +5 more sources
The Relative Orientation of Nuclear Accretion and Galaxy Stellar Disks in Seyfert Galaxies [PDF]
Astrophysical Journal, 1999 We use the difference (delta) between the position angles of the nuclear radio emission and the host galaxy major axis to investigate the distribution of the angle (beta) between the axes of the nuclear accretion disk and the host galaxy disk in Seyfert galaxies. We provide a critical appraisal of the quality of all measurements, and find that the data
Neil M Nagar, A S Wilson
exaly +5 more sources
SHRINKING GALAXY DISKS WITH FOUNTAIN-DRIVEN ACCRETION FROM THE HALO [PDF]
Astrophysical Journal, 2014 Star formation in most galaxies requires cosmic gas accretion because the gas consumption time is short compared to the Hubble time. This accretion presumably comes from a combination of infalling satellite debris, cold flows, and condensation of hot halo gas at the cool disk interface, perhaps aided by a galactic fountain.
Bruce G Elmegreen +2 more
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Turbulent viscosity in clumpy accretion disks [PDF]
Astronomy & Astrophysics, 2003 15 pages with 10 figures.
Vollmer, B., Beckert, T.
core +5 more sources
UNSTABLE DISKS AT HIGH REDSHIFT: EVIDENCE FOR SMOOTH ACCRETION IN GALAXY FORMATION [PDF]
Astrophysical Journal, 2009 ApJ Letters ...
Frédéric Bournaud, Bruce G Elmegreen
exaly +4 more sources
How Gas Accretion Feeds Galactic Disks [PDF]
Astrophysical Journal, 2019 Numerous observations indicate that galaxies need a continuous gas supply to fuel star formation and explain the star formation history. However, direct observational evidence of gas accretion remains rare.
Ho, Stephanie H +2 more
core +2 more sources
Hot-mode accretion and the physics of thin-disk galaxy formation [PDF]
Monthly notices of the Royal Astronomical Society, 2022 We use FIRE simulations to study disk formation in z~0, Milky Way-mass galaxies, and conclude that a key ingredient for the formation of thin stellar disks is the ability for accreting gas to develop an aligned angular momentum distribution via internal ...
Chan, TK +41 more
core +2 more sources
ACCRETION-DRIVEN TURBULENCE AND THE TRANSITION TO GLOBAL INSTABILITY IN YOUNG GALAXY DISKS [PDF]
Astrophysical Journal, 2010 ApJ vol.
Bruce G Elmegreen, Andreas Burkert
exaly +3 more sources
Supercritical accretion disks in ultraluminous X-ray sources and SS 433 [PDF]
Nature Physics, 2015 © 2015 Macmillan Publishers Limited. All rights reserved. The black hole mass and accretion rate in ultraluminous X-ray sources (ULXs) in external galaxies, whose X-ray luminosities exceed those of the brightest black holes in our Galaxy by hundreds and ...
Ueda Y. +4 more
core +3 more sources
Evidence of an Untruncated Accretion Disk in the Broad-Line Radio Galaxy 4C 74.26 [PDF]
The Astrophysical Journal, 2005 4 pages, 2 figures, accepted by ApJ ...
Ballantyne, D. R., Fabian, A. C.
openaire +4 more sources