Limits on iron-dominated fallback disk in SN 1987A
Astrophysics
2008-11-26 v1
Abstract
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.
Cite
@article{arxiv.astro-ph/0703520,
title = {Limits on iron-dominated fallback disk in SN 1987A},
author = {K. Werner and T. Nagel and T. Rauch},
journal= {arXiv preprint arXiv:astro-ph/0703520},
year = {2008}
}
Comments
To appear in: Proceedings "Supernova 1987A: Twenty years after"