Late emission from SN 1987A

Journal Article · Sun Nov 01 04:00:00 EST 1987 · Astrophys. J.; (United States)

DOI:https://doi.org/10.1086/185028· OSTI ID:5425455

Fransson, C; Chevalier, R A

Multiwavelength observations of SN 1987A are examined, and the late emission from the mantle gas is modeled under the assumption of energy input by gamma rays from Co-56 decay. An emission line spectrum of low-ionization species has been produced at optical through IR wavelengths. At an age of about 700 days, an IR catastrophe occurs, and most of the radiation is then emitted in IR fine-structure lines. The gamma-ray intensity is found to peak in the 15-solar-mass model at an age of 270 days. Very little production of X-rays below 50 keV is expected if the photon interaction with the hydrogen envelope can be neglected. It is suggested that the radio emission from the pulsar may be absorbed by the ejecta for several years. 21 references.

• Research Organization: Stockholms Observatorium, Saltsjobaden (Sweden); Virginia Univ., Charlottesville (USA)
• OSTI ID: 5425455
• Journal Information: Astrophys. J.; (United States), Journal Name: Astrophys. J.; (United States) Vol. 322; 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
COSMIC GASES
COSMIC RADIO SOURCES
EMISSION SPECTRA
ERUPTIVE VARIABLE STARS
FLUIDS
GASES
INFRARED SPECTRA
MASS TRANSFER
MATHEMATICAL MODELS
PULSARS
SPECTRA
SPECTROPHOTOMETRY
STAR EVOLUTION
STAR MODELS
STARS
SUPERNOVAE
VARIABLE STARS
VISIBLE SPECTRA