The optical afterglow of GRB 000911: Evidence for an associated supernova?

Authors
Lazzati, D Covino, S Ghisellini, G Fugazza, D Campana, S Saracco, P Price, PA Berger, E Kulkarni, S Ramirez-Ruiz, E Cimatti, A Della Valle, M Alighieri, SD Celotti, A Haardt, F Israel, GL Stella, L
Citation
D. Lazzati et al., The optical afterglow of GRB 000911: Evidence for an associated supernova?, ASTRON ASTR, 378(3), 2001, pp. 996-1002
Citations number
35
Categorie Soggetti
Space Sciences
Journal title
ASTRONOMY & ASTROPHYSICS
ISSN journal
14320746 → ACNP
Volume
378
Issue
3
Year of publication
2001
Pages
996 - 1002
Database
ISI
SICI code
1432-0746(200111)378:3<996:TOAOG0>2.0.ZU;2-F
Abstract
We present photometric and spectroscopic observations of the late afterglow of GRB 000911, starting similar to1 day after the burst event and lasting similar to8 weeks. We detect a moderately significant re-brightening in the R, I and J lightcurves, associated with a sizable reddening of the spectru m. This can be explained through the presence of an underlying supernova, o utshining the afterglow similar to 30 days after the burst event. Alternati ve explanations are discussed.