Swift/XRT observation of the Crab Nebula after the gamma-ray flare observed on April 11, 2011
Abstract
Following the detection by the Fermi/LAT (ATel #3276) of an enhanced gamma-ray emission from a source positionally consistent with the Crab Nebula, a ToO Swift/XRT observation was requested. We obtained 1.8 ks XRT observation of the Crab Nebula in windowed timing (WT) mode starting at 2011-04-12 18:39:29 UT. In this observation the peak emission of the Crab Nebula is coincident with a hot column. The XRT software allows a proper correction for the presence of hot columns for point-like sources.
- Publication:
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The Astronomer's Telegram
- Pub Date:
- April 2011
- Bibcode:
- 2011ATel.3279....1C
- Keywords:
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- X-ray;
- Gamma Ray;
- Pulsar