CONTRIBUTION OF ACCRETION TO THE BOLOMETRIC LUMINOSITY OF SN 1987A

The investigations of the bolometric light curve of SN1987A are briefl y reviewed. We suggest that the accretion luminosity produced by an as sumed neutron star in the center of SN1987A is important for the evolu tion of the bolometric light curve at a later stage. We emphasize the marked difference of our model with previous accretion models, where t he backfall of material mainly occurs within the first few seconds aft er the explosion and the details of accretion are dependent on the exp losion mechanism which is very uncertain. In this paper, we are concer ned with the continuous gravitational infall of material within the ex pansion envelope. Our suggestion is directly inspired by the observati on of the line profile and is weakly dependent on the explosion model. Taking as typical values of the neutron star mass M = 1.4M. and radiu s R = 10(6) cm, the model calculation fits the observed light curve we ll. This a posteriori supports the assumption of central neutron star.