Chandra Observations of SN 1999gi and the X-Ray Emission of Type II-P Supernovae

Details Chandra Observations of SN 1999gi and the X-Ray Emission of Type II-P Supernovae Chandra Observations of SN 1999gi and the X-Ray Emission of Type II-P Supernovae

Jul 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001apj...556l..25s&link_type=abstract

The Astrophysical Journal, Volume 556, Issue 1, pp. L25-L28.

Astronomy and Astrophysics

Astronomy

20

Galaxies: Spiral, Stars: Supernovae: Individual: Alphanumeric: Sn 1999Gi, Stars: Supernovae: Individual: Alphanumeric: Sn 1999Em, X-Rays: Galaxies

Scientific paper

We report on the probable X-ray detection, using the Chandra X-Ray Observatory, 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 ~1×1037 ergs s-1 in the 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 Chandra detection of the Type II-P SN 1999em in NGC 1637 for which we extracted data from the Chandra archive. We suggest that Type II-P supernovae show X-rays initially at outburst, subsequently fade, and are not significant X-ray emitters prior to the remnant stage.

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