X-ray and gamma-ray emissions expected from supernova 1987A

Journal Article · Sun May 01 04:00:00 EDT 1988 · Astrophys. J.; (United States)

DOI:https://doi.org/10.1086/166327· OSTI ID:7188662

Ebisuzaki, T; Shibazaki, N

The X-ray and gamma-ray spectra expected from SN 1987A have been calculated. Results for the TWOBF7 model are inconsistent with Ginga observation, but the X-ray flux and its spectral shape strongly depend on the chemical composition and expansion velocity of the ejecta. The distributions of density and chemical compositions for SN 1987A are described. For the TWOBF7 model, the X-ray flux between 10 and 20 keV reaches a peak of 6.7 photons/s/sq m about 1 yr after the explosion. For the 15B5 model, the peak flux is larger by a factor of five. The implications of the Ginga satellite's detection of an excess X-ray flux from the direction of the supernova for the models of SN 1987A are considered. How observations of gamma-ray lines can determine the optical thickness of the expanding shell is discussed. 22 references.

• Research Organization: NASA, Marshall Space Flight Center, Huntsville, AL (USA)
• OSTI ID: 7188662
• Journal Information: Astrophys. J.; (United States), Journal Name: Astrophys. J.; (United States) Vol. 328; ISSN ASJOA
• 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
BASIC INTERACTIONS
CHEMICAL COMPOSITION
COMPTON EFFECT
ELASTIC SCATTERING
ELECTROMAGNETIC INTERACTIONS
ENERGY SPECTRA
ERUPTIVE VARIABLE STARS
GAMMA SPECTRA
INELASTIC SCATTERING
INTERACTIONS
MONTE CARLO METHOD
SCATTERING
SPECTRA
STARS
SUPERNOVAE
THOMSON SCATTERING
VARIABLE STARS
X-RAY SPECTRA