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1A 0535+262 in Outburst

ATel #504; Jack Tueller, Marco Ajello, Scott Barthelmy, Hans Krimm, Craig Makwardt, Gerald Skinner
on 31 May 2005; 16:13 UT
Distributed as an Instant Email Notice Transients
Credential Certification: Jack Tueller (jack.tueller-1@nasa.gov)

Subjects: X-ray, Gamma Ray, Binary, Neutron Star, Transient, Pulsar

Referred to by ATel #: 557, 595, 601, 2161, 2336, 2337, 14157, 14392

The BAT instrument on Swift has detected the transient source 1A 0535+262 at the count rate > 3 times the Crab Nebula. The outburst was first detectable on May 16 in one day averages of BAT survey products in the energy band 15-195 keV. The source is currently near the Sun (~17 degrees).