Swift XRT observations of the M 31 ULX XMMU J004243.6+412519
Abstract
We report on recent target of opportunity (ToO) observations with the X-ray telescope (XRT) on board the Swift satellite of the transient ultralumious X-ray source (ULX) XMMU J004243.6+412519 in M 31 (see ATel's #3890,#3921,#3937). Five observations have been carried out in XRT photon counting mode: ObsIDs 00032286002 (started on 2012-02-19.03 UT, exposure time 3.8 ks), 00032286003 (2012-02-23.78 UT, 3.3 ks), 00032286006 (2012-03-02.20 UT, 6.3 ks), 00032286007 (2012-03-03.01 UT, 7.1 ks) and 00032286010 (2012-03-04.20 UT, 4.3 ks).
- Publication:
-
The Astronomer's Telegram
- Pub Date:
- March 2012
- Bibcode:
- 2012ATel.3959....1H
- Keywords:
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- X-ray;
- Transient