Astronomy and Astrophysics – Astronomy
Scientific paper
Jul 2011
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011atel.3514....1m&link_type=abstract
The Astronomer's Telegram, #3514
Astronomy and Astrophysics
Astronomy
X-Ray, Supernovae
Scientific paper
We obtained 8.4 ks of Swift-XRT observations (id=32038) of type-II SN2011ef (CBET 2772) spanning the time interval July 22nd - July 26th. Observations were entirely performed in Photon Counting mode. No X-ray source is detected at the optical position, with a 3-sigma upper limit of 5.1E-03 c/s corresponding to a flux limit of ~3E-13 erg/s/cm2 (0.3-10 keV energy range). We thank the Swift team for scheduling these ToO observations.
Margutti Raffaella
Soderberg Alicia
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