X-rays from supernova 1987A - beneath the radioactive layers

Journal Article · Fri Sep 01 04:00:00 EDT 1989 · Astrophysical Journal; (USA)

DOI:https://doi.org/10.1086/167850· OSTI ID:5356122

Bandiera, R; Pacini, F; Salvati, M ^[1]

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1. Arcetri, Osservatorio Astrofisico, Florence (Italy)

The detection of X-rays from Sn 1987A is providing important information about the processes taking place in the early evolution of SNs. In the energy range above 20 keV, down-Comptonization of gamma-ray lines emitted by Co-56 represents a significant source of X-rays. If the emission is dominated by this process, the presence of 0.07 solar mass of Co-56 means that the hard X-ray flux should dramatically decrease around the end of 1988, independent of any assumption about the envelope structure. The X-ray flux below 20 keV arises probably from a nonthermal nebula produced by a rotating neutron star. 31 refs.

• OSTI ID: 5356122
• Journal Information: Astrophysical Journal; (USA), Journal Name: Astrophysical Journal; (USA) Vol. 344; ISSN ASJOA; ISSN 0004-637X
• 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
BETA DECAY RADIOISOTOPES
BETA-PLUS DECAY RADIOISOTOPES
COBALT 56
COBALT ISOTOPES
COMPTON EFFECT
COSMIC RAY SOURCES
COSMIC X-RAY SOURCES
DAYS LIVING RADIOISOTOPES
ELASTIC SCATTERING
ELECTROMAGNETIC INTERACTIONS
ELECTROMAGNETIC RADIATION
ELECTRON CAPTURE RADIOISOTOPES
EMISSION SPECTRA
ERUPTIVE VARIABLE STARS
GAMMA SPECTRA
HARD X RADIATION
INTERACTIONS
INTERMEDIATE MASS NUCLEI
IONIZING RADIATIONS
ISOTOPES
NEUTRON STARS
NUCLEAR REACTIONS
NUCLEI
NUCLEOSYNTHESIS
ODD-ODD NUCLEI
RADIATION FLUX
RADIATIONS
RADIOISOTOPES
SCATTERING
SPECTRA
STAR EVOLUTION
STARS
SUPERNOVAE
SYNTHESIS
THERMONUCLEAR REACTIONS
VARIABLE STARS
X RADIATION