- P. M. Woods, Thompson, C. in
- H. G., van der Klis, M. (ed.) Compact Stellar X…
The non-detection of a point source in SN 1987A imposes an upper limit for the optical luminosity of Lopt∼2 L⊙. This limits the size of a possible fallback disk around the stellar remnant. Assuming a steady-state thin disk with blackbody emission requires a disk smaller than 100 000 km if the accretion rate is at 30% of the Eddington rate . We have performed detailed non-LTE radiation transfer calculations to model the disk spectrum more realistically. It turns out that the observational limit on the disk extension becomes even tighter, namely 70 000 km.