The nature of the companion of SN 1987 A

Details The nature of the companion of SN 1987 A The nature of the companion of SN 1987 A

Nov 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987a%26a...186l...3g&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 186, no. 1-2, Nov. 1987, p. L3, L4.

Astronomy and Astrophysics

Astrophysics

11

Companion Stars, Neutron Stars, Stellar Evolution, Stellar Models, Supernova 1987A, White Dwarf Stars, Relativistic Velocity, Stellar Luminosity, Stellar Mass Accretion, Stellar Mass Ejection, Stellar Spectrophotometry, Visible Spectrum

Scientific paper

A model for the companion of SN 1987 A, observed recently by optical speckle interferometry, is proposed. It is suggested that the observed relativistic velocity and the high luminosity can be naturally explained within a framework of a rotating collapse, producing two neutron stars in a binary system which decays due to emission of gravitational radiation. This leads eventually to the tidal disruption of the less massive member and the ejection of a fraction of the disrupted star of mass of less than about 0.1 solar masses at a relativistic velocity. The decompression of the ejected fraction transforms its composition from that of nuclear matter to that of superheavy elements (z of about 126), leading to a formation of a 'white dwarf' which on its way out accretes about 0.0001 solar masses from the progenitor. The ejected mass has about 0.0003 of Ni-56 producing gamma-ray photons, by radioactive decay of Ni-56 and Co-56 that are reprocessed into the observed optical photons, in the layer accreted on the way out. In the present model there is no need for an energy source separate from the companion, as is the case with models proposed so far.

Affiliated with

Also associated with

No associations

Rating

The nature of the companion of SN 1987 A does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with The nature of the companion of SN 1987 A, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The nature of the companion of SN 1987 A will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1712360