BURST AND PERSISTENT EMISSION PROPERTIES DURING THE RECENT ACTIVE EPISODE OF THE ANOMALOUS X-RAY PULSAR 1E 1841-045
- National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100012 (China)
- Space Science Office, VP62, NASA/Marshall Space Flight Center, Huntsville, AL 35812 (United States)
- Faculty of Engineering and Natural Sciences, Sabanci University, Orhanli-Tuzla, Istanbul 34956 (Turkey)
- Universities Space Research Association, NSSTC, Huntsville, AL 35805 (United States)
- Astronomical Institute 'Anton Pannekoek', University of Amsterdam, 1090 GE Amsterdam (Netherlands)
- Department of Physics and Astronomy, Rice University, MS-108, Houston, TX 77251 (United States)
- Corvid Technologies, Huntsville, AL 35806 (United States)
- NASA Goddard Space Flight Center, Greenbelt, MD 20771 (United States)
- CSPAR, University of Alabama in Huntsville, Huntsville, AL 35805 (United States)
- Centre for Astrophysics Research, University of Hertfordshire, Hatfield, Herts AL10 9AB (United Kingdom)
- School of Physics, University College Dublin, Belfield, Dublin 4 (Ireland)
The Swift/Burst Alert Telescope detected the first burst from 1E 1841-045 in 2010 May with intermittent burst activity recorded through at least 2011 July. Here we present Swift and Fermi/Gamma-ray Burst Monitor observations of this burst activity and search for correlated changes to the persistent X-ray emission of the source. The T {sub 90} durations of the bursts range between 18 and 140 ms, comparable to other magnetar burst durations, while the energy released in each burst ranges between (0.8-25) x 10{sup 38} erg, which is on the low side of soft gamma repeater bursts. We find that the bursting activity did not have a significant effect on the persistent flux level of the source. We argue that the mechanism leading to this sporadic burst activity in 1E 1841-045 might not involve large-scale restructuring (either crustal or magnetospheric) as seen in other magnetar sources.
- OSTI ID:
- 21565401
- Journal Information:
- Astrophysical Journal Letters, Vol. 740, Issue 1; Other Information: DOI: 10.1088/2041-8205/740/1/L16; ISSN 2041-8205
- Country of Publication:
- United States
- Language:
- English
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