期刊
ASTROPHYSICAL JOURNAL LETTERS
卷 740, 期 1, 页码 -出版社
IOP PUBLISHING LTD
DOI: 10.1088/2041-8205/740/1/L16
关键词
pulsars: individual (1E 1841-045); X-rays: bursts
资金
- NASA [NNH07ZDA001-GLAST, NNX10AC59A]
- Scientific and Technological Research Council of Turkey (TUBITAK) [109T755]
- Netherlands Organisation for Scientific Research (NWO)
- European Research Council [247295]
- Bundesministeriums fur Wirtschaft und Technologie (BMWi) [50 OG 1101]
- Science and Technology Facilities Council [ST/G002630/1] Funding Source: researchfish
- NASA [136041, NNX10AC59A] Funding Source: Federal RePORTER
- STFC [ST/G002630/1] Funding Source: UKRI
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) x 10(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.
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