MAXI J1348-630: Swift XRT localization, possible periodicity
Abstract
Following the reporting of a new X-ray transient, MAXI J1348-630 (Yatabe et al., ATEL #12425), and it's subsequent detection by Swift's Burst Alert Monitor (BAT), as reported by D'Elia et al (GCN #23795 and #23796), Swift performed a 1ks Target of Opportunity observation of this transient in Photon Counting mode, in order to accurately localize it. Analysis of the XRT data find a bright uncatalogued X-ray source the following location: RA/Dec(J2000) = 207.05305, -63.27411, RA(J2000) = 13h 48m 12.73s, Dec(J2000) = -63d 16m 26.8s, with an error radius of 1.7 arc-seconds (90% confidence), this lies 1.9 arc-seconds from the optical transient reported by Denisenko et al. (ATEL #12430), and although the position lies slightly outside of the 90% error region, we believe that this unambiguously confirms that the optical transient is related to MAXI J1348-630.
- Publication:
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The Astronomer's Telegram
- Pub Date:
- January 2019
- Bibcode:
- 2019ATel12434....1K
- Keywords:
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- Transient