BURST AND OUTBURST CHARACTERISTICS OF MAGNETAR 4U 0142+61
- Sabancı University, Orhanlı-Tuzla, İstanbul 34956 (Turkey)
- Department of Astronomy, Beijing Normal University, Beijing 100875 (China)
- School of Physics, University College Dublin, Stillorgan Road, Belfield, Dublin 4 (Ireland)
- Department of Natural Sciences, The Open University of Israel, 1 University Road, P.O. Box 808, Ranana 43537 (Israel)
- Department of Physics, The George Washington University, Washington, DC 20052 (United States)
- Anton Pannekoek Institute for Astronomy, University of Amsterdam, Postbus 94249, NL-1090 GE Amsterdam (Netherlands)
- Department of Physics and Astronomy, Rice University, MS-108, P.O. Box 1892, Houston, TX 77251 (United States)
- Center for Data Science, New York University, 726 Broadway, 7th Floor, NY 10003 (United States)
We have compiled the most comprehensive burst sample from magnetar 4U 0142+61, comprising 27 bursts from its three burst-active episodes in 2011, 2012 and the latest one in 2015 observed with Swift /Burst Alert Telescope and Fermi /Gamma-ray Burst Monitor. Bursts from 4U 0142+61 morphologically resemble typical short bursts from other magnetars. However, 4U 0142+61 bursts are less energetic compared to the bulk of magnetar bursts. We uncovered an extended tail emission following a burst on 2015 February 28, with a thermal nature, cooling over a timescale of several minutes. During this tail emission, we also uncovered pulse peak phase aligned X-ray bursts, which could originate from the same underlying mechanism as that of the extended burst tail, or an associated and spatially coincident but different mechanism.
- OSTI ID:
- 22664026
- Journal Information:
- Astrophysical Journal, Vol. 835, Issue 1; Other Information: Country of input: International Atomic Energy Agency (IAEA); ISSN 0004-637X
- Country of Publication:
- United States
- Language:
- English
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