Accretion disk corona and the nature of X-ray burster 3U 1820--30

Journal Article · Sat Jan 15 04:00:00 EST 1977 · Astrophys. J., Lett.; (United States)

DOI:https://doi.org/10.1086/182343· OSTI ID:7325686

Liang, E P.T.

We propose a two-component model consisting of a standard thin accretion disk and a hotter corona for 3U 1820--30, with the giant X-ray bursts originating in the inner (radiation-pressure dominated) region of the disk. Arguments in favor of and methods to test such a model are briefly discussed. Parameters of the bursting region are estimated, and an upper limit for the mass of the central compact object is obtained in two special cases. They all indicate a mass less than 20 M/sub sun/, contrary to the massive-black-hole hypothesis.

• Research Organization: Department of Astronomy and Astrophysics, Michigan State University
• OSTI ID: 7325686
• Journal Information: Astrophys. J., Lett.; (United States), Journal Name: Astrophys. J., Lett.; (United States) Vol. 211:2; ISSN AJLEA
• Country of Publication: United States
• Language: English

Related Subjects

640102* -- Astrophysics & Cosmology-- Stars & Quasi-Stellar
Radio & X-Ray Sources
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
BLACK HOLES
COSMIC DUST
COSMIC GASES
COSMIC RAY SOURCES
COSMIC X-RAY SOURCES
DUSTS
ELECTROMAGNETIC RADIATION
FLUID MECHANICS
FLUIDS
GASES
HYDRODYNAMICS
IONIZING RADIATIONS
MATHEMATICAL MODELS
MECHANICS
OPACITY
OPTICAL PROPERTIES
PHYSICAL PROPERTIES
RADIATIONS
STAR ACCRETION
STAR EVOLUTION
STAR MODELS
VARIATIONS
X RADIATION