TY - JOUR
T1 - Burst and persistent emission properties during the recent active episode of the anomalous X-ray pulsar 1E 1841-045
AU - Lin, Lin
AU - Kouveliotou, Chryssa
AU - Göĝüş, Ersin
AU - Van Der Horst, Alexander J.
AU - Watts, Anna L.
AU - Baring, Matthew G.
AU - Kaneko, Yuki
AU - Wijers, Ralph A.M.J.
AU - Woods, Peter M.
AU - Barthelmy, Scott
AU - Michael Burgess, James
AU - Chaplin, Vandiver
AU - Gehrels, Neil
AU - Goldstein, Adam
AU - Granot, Jonathan
AU - Guiriec, Sylvain
AU - McEnery, Julie
AU - Preece, Robert D.
AU - Tierney, David
AU - Van Der Klis, Michiel
AU - Von Kienlin, Andreas
AU - Zhang, Shuang Nan
PY - 2011/10/10
Y1 - 2011/10/10
N2 - The Swift/Burst Alert Telescope detected the first burst from 1E1841-045 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 140ms, comparable to other magnetar burst durations, while the energy released in each burst ranges between (0.8-25) × 10 38erg, 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 1E1841-045 might not involve large-scale restructuring (either crustal or magnetospheric) as seen in other magnetar sources.
AB - The Swift/Burst Alert Telescope detected the first burst from 1E1841-045 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 140ms, comparable to other magnetar burst durations, while the energy released in each burst ranges between (0.8-25) × 10 38erg, 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 1E1841-045 might not involve large-scale restructuring (either crustal or magnetospheric) as seen in other magnetar sources.
KW - X-rays: bursts
KW - pulsars: individual (1E 1841-045)
UR - https://www.scopus.com/pages/publications/80053530534
U2 - 10.1088/2041-8205/740/1/L16
DO - 10.1088/2041-8205/740/1/L16
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AN - SCOPUS:80053530534
SN - 2041-8205
VL - 740
JO - Astrophysical Journal Letters
JF - Astrophysical Journal Letters
IS - 1
M1 - L16
ER -