Self-gravity in neutrino-dominated accretion disks

Journal Article · Sun Aug 10 00:00:00 EDT 2014 · Astrophysical Journal

DOI:https://doi.org/10.1088/0004-637X/791/1/69· OSTI ID:22365357

Liu, Tong; Yu, Xiao-Fei; Gu, Wei-Min; Lu, Ju-Fu ^[1]

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1. Department of Astronomy and Institute of Theoretical Physics and Astrophysics, Xiamen University, Xiamen, Fujian 361005 (China)

We present the effects of self-gravity on the vertical structure and neutrino luminosity of the neutrino-dominated accretion disks in cylindrical coordinates. It is found that significant changes of the structure appear in the outer region of the disk, especially for high accretion rates (e.g., ≳ 1 M{sub ☉} s{sup –1}), and thus cause the slight increase in the neutrino luminosity. Furthermore, the gravitational instability of the disk is reviewed by the vertical distribution of the Toomre parameter, which may account for the late-time flares in gamma-ray bursts and the extended emission in short-duration gamma-ray bursts.

• OSTI ID: 22365357
• Journal Information: Astrophysical Journal, Vol. 791, Issue 1; Other Information: Country of input: International Atomic Energy Agency (IAEA); ISSN 0004-637X
• Country of Publication: United States
• Language: English

Related Subjects

79 ASTROPHYSICS
COSMOLOGY AND ASTRONOMY
ACCRETION DISKS
BLACK HOLES
COSMIC GAMMA BURSTS
CYLINDRICAL CONFIGURATION
DISTRIBUTION
EMISSION
GRAVITATION
GRAVITATIONAL INSTABILITY
LUMINOSITY
NEUTRINOS