Limits on iron-dominated fallback disk in SN 1987A

Details Limits on iron-dominated fallback disk in SN 1987A Limits on iron-dominated fallback disk in SN 1987A

2007-03-20

arxiv.org/abs/astro-ph/0703520v1

AIPConf.Proc.937:81-85,2007

Astronomy and Astrophysics

Astrophysics

To appear in: Proceedings "Supernova 1987A: Twenty years after"

Scientific paper

10.1063/1.2803626

The non-detection of a point source in SN1987A imposes an upper limit for the optical luminosity of L=2L_sun. 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 (Graves et al. 2005). 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.

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