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Burst and Persistent Emission Properties during the Recent Active Episode of the Anomalous X-Ray Pulsar 1E 1841-045
- Lin, Lin (author)
- Kouveliotou, Chryssa (author)
- Göğüş, Ersin (author)
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- van der Horst, Alexander J (author)
- Watts, Anna L (author)
- Baring, Matthew G (author)
- Kaneko, Yuki (author)
- Wijers, Ralph A M J (author)
- Woods, Peter M (author)
- Barthelmy, Scott (author)
- Chaplin, Vandiver (author)
- Gehrels, Neil (author)
- Goldstein, Adam (author)
- Granot, Jonathan (author)
- Guiriec, Sylvain (author)
- McEnery, Julie (author)
- Preece, Robert D (author)
- Tierney, David (author)
- van der Klis, Michiel (author)
- von Kienlin, Andreas (author)
- Zhang, Shuang Nan (author)
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- (creator_code:org_t)
- Institute of Physics (IOP), 2011
- 2011
- English.
- In: Astrophysical Journal Letters. - : Institute of Physics (IOP). - 2041-8205 .- 2041-8213. ; 740:1
- Journal article (peer-reviewed)
Abstract
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- 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 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) × 1038 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.
Subject headings
- NATURVETENSKAP -- Fysik -- Astronomi, astrofysik och kosmologi (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Astronomy, Astrophysics and Cosmology (hsv//eng)
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- Kaneko, Yuki
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- Goldstein, Adam
- Granot, Jonathan
- Guiriec, Sylvain
- McEnery, Julie
- Preece, Robert D
- Tierney, David
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