Chandra Observation of SN 2007gr

Details Chandra Observation of SN 2007gr Chandra Observation of SN 2007gr

Sep 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007atel.1205....1s&link_type=abstract

The Astronomer's Telegram, #1205

Astronomy and Astrophysics

Astronomy

2

X-Ray, Novae, Supernovae

Scientific paper

I observed the radio bright Type Ibc SN 2007gr (IAUC 8864, ATEL #1187) with Chandra ACIS-I beginning on 2007 Aug 29.07 UT. The SN is not clearly detected in the 20 ksec observation. I place an upper limit on the unabsorbed flux of 3.9e-15 erg/cm^2/s (0.2-10 keV) for an adopted power-law spectrum with a photon index of 2 and Galactic foreground column density of 3.7e+20 cm^-2. Nearly simultaneous radio observations at 8.46 GHz show that the observed radio to X-ray flux density spectrum (F_nu ~ nu^beta) is constrained to be steeper than beta = -0.7.

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