Where is SGR 1806-20?

Citation
K. Hurley et al., Where is SGR 1806-20?, ASTROPHYS J, 523(1), 1999, pp. L37-L40
Citations number
23
Categorie Soggetti
Space Sciences
Journal title
ASTROPHYSICAL JOURNAL
ISSN journal
0004637X → ACNP
Volume
523
Issue
1
Year of publication
1999
Part
2
Pages
L37 - L40
Database
ISI
SICI code
0004-637X(19990920)523:1<L37:WIS1>2.0.ZU;2-6
Abstract
We apply a statistical method to derive very precise locations for soft gam ma repeaters using data from the interplanetary network. We demonstrate the validity of the method by deriving a 600 arcsec(2) error ellipse for SGR 1 900+14 whose center agrees well with the VLA source position. We then apply it to SGR 1806-20, for which we obtain a 230 arcsec(2) error ellipse, the smallest burst error box to date. We find that the most likely position of the source has a small but significant displacement from that of the nonthe rmal core of the radio supernova remnant G10.0-0.3, which was previously th ought to be the position of the repeater. We propose a different model to e xplain the changing supernova remnant morphology and the positions of the l uminous blue variable and the bursting source.