X-ray Flux Enhancement from 1E 2259+586 in Swift XRT Monitoring
ATel #4080; R. F. Archibald, V. M. Kaspi (McGill U.), A. P. Beardmore (U. Leicester), N. Gehrels (NASA-GSFC), J. Kennea (PSU)
on 30 Apr 2012; 20:04 UT
Credential Certification: Victoria Kaspi (vkaspi@physics.mcgill.ca)
Subjects: X-ray, Neutron Star, Soft Gamma-ray Repeater, Pulsar
Referred to by ATel #: 4101
We report an increase in the X-ray flux from 1E 2259+586 in our most
recent Swift XRT monitoring observation on April 28, 2012 (MJD 56045.00889).
We measure a 1-10 keV flux of (5.0+/-0.2)x10^-11 erg/s/cm2, which represents
a factor of 2.00+/-0.09 increase relative to the long-term average, and to the flux
measured in the previous Swift observation on April 14, 2012. In addition, the 1-10 keV
pulse profile shows a modest deviation from the quiescent profile, with the ratio of the
amplitudes of the two pulse peaks closer to unity. We detect no bursts in the April 28
observation.
We encourage observations of the source at other wavelengths.
