Chandra observations of SN 1999gi and the X-ray emission of Type II-P supernovae

Authors
Citation
Em. Schlegel, Chandra observations of SN 1999gi and the X-ray emission of Type II-P supernovae, ASTROPHYS J, 556(1), 2001, pp. L25-L28
Citations number
32
Categorie Soggetti
Space Sciences
Journal title
ASTROPHYSICAL JOURNAL
ISSN journal
0004637X → ACNP
Volume
556
Issue
1
Year of publication
2001
Part
2
Pages
L25 - L28
Database
ISI
SICI code
0004-637X(20010720)556:1<L25:COOS1A>2.0.ZU;2-A
Abstract
We report on the probable X-ray detection, using the Chandra X-Ray Observat ory, of the Type II-plateau (II-P) supernova SN 1999gi in the spiral galaxy NGC 3184. A faint source is located within 0."4 of the supernova's optical position. The inferred luminosity is similar to1 x 10(37) ergs s(-1) in th e 0.5-10 keV band for an adopted 1 keV thermal bremsstrahlung spectrum. The luminosity from SN 1999gi is very similar to that inferred from the Chandr a detection of the Type II-P SN 1999em in NGC 1637 for which we extracted d ata from the Chandra archive. We suggest that Type II-P supernovae show X-r ays initially at outburst, subsequently fade, and are not significant X-ray emitters prior to the remnant stage.