Swift Detection of an X-Ray Source at the Position of the Type Ia SN 2011by

Details Swift Detection of an X-Ray Source at the Position of the Type Ia SN 2011by Swift Detection of an X-Ray Source at the Position of the Type Ia SN 2011by

Jun 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011atel.3410....1i&link_type=abstract

The Astronomer's Telegram, #3410

Astronomy and Astrophysics

Astronomy

1

X-Ray, Supernovae

Scientific paper

Using 42 epochs of Swift X-Ray Telescope (XRT) observations of SN 2011by (CBET 2708) obtained between 2011-04-27 and 2011-06-05 (80.8 ks exposure time), an X-ray point-source is detected consistent with the position of the SN, with a 3.9-sigma significance of source detection. The PSF, dead-time, and vignetting corrected XRT net count rate is (3.9+/-1.0)E-04 cts/s, corresponding to an unabsorbed (0.2-10 keV band) X-ray flux of (1.7+/-0.4)E-14 erg/cm/cm/s and a luminosity of (7.1+/-1.8)E38 erg/s for an adopted thermal plasma spectrum with a temperature of kT = 10 keV, a Galactic foreground column density of N_H = 1.2E+20 (Dickey & Lockman, 1990, ARAA 28) and a distance of 18.6 Mpc (NED).

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