TY - JOUR
T1 - Multi-instrument X-ray monitoring of the January 2009 outburst from the recurrent magnetar candidate 1E 1547.0-5408
AU - Bernardini, F.
AU - Israel, G. L.
AU - Stella, L.
AU - Turolla, R.
AU - Esposito, P.
AU - Rea, N.
AU - Zane, S.
AU - Tiengo, A.
AU - Campana, S.
AU - Götz, D.
AU - Mereghetti, S.
AU - Romano, P.
N1 - Funding Information:
This paper is based on observations obtained with Chandra XMM-Newton INTEGRAL, and Swift. Chandra is part of the Chandra X-Ray Center (CXC) which is operated for NASA by the Smithsonian Astrophysical Observatory. XMM-Newton and INTEGRAL, are both ESA science missions with instruments and contributions directly funded by ESA Member States and the USA (through NASA). Swift is a NASA/UK/ASI mission. We thank the all duty scientists and science planners for making these observations possible. F.B acknowledges the Chandra help desk. PE acknowledges financial support from the Autonomous Region of Sardinia through a research grant under the program PO Sardegna FSE 2007–2013, L.R. 7/2007 “Promoting scientific research and innovation technology in Sardinia”. D.G. acknowledges the French Space Agency (CNES) for financial support. The Italian authors acknowledge the partial support from ASI (ASI/INAF contracts I/088/06/0, I/011/07/0, AAE TH-058, AAE DA-044, and AAE DA-006).
PY - 2011
Y1 - 2011
N2 - Context. With two consecutive outbursts recorded in four months (October 2008 and January 2009), and a possible third outburst in 2007, 1 1547.0-5408 is one of the most active transient anomalous X-ray pulsars known so far. Aims. Thanks to extensive X-ray observations, obtained both in the quiescent and active states, 1 1547.0-5408 represents a very promising laboratory to gain insight into the outburst properties and magnetar emission mechanisms. Methods. We performed a detailed timing and spectral analysis of four Chandra, three INTEGRAL, and one XMM-Newton observations collected over a two week interval after the outburst onset in January 2009. Several Swift pointings, covering a 1.5 year interval, were also analyzed in order to monitor the decay of the X-ray flux. Results. We compare the characteristics of the two outbursts, as well as those of the active and quiescent states. We also discuss the long-term X-ray flux history of 1 1547.0-5408 since its first detection in 1980, and show that the source displays three flux levels: low, intermediate and high.
AB - Context. With two consecutive outbursts recorded in four months (October 2008 and January 2009), and a possible third outburst in 2007, 1 1547.0-5408 is one of the most active transient anomalous X-ray pulsars known so far. Aims. Thanks to extensive X-ray observations, obtained both in the quiescent and active states, 1 1547.0-5408 represents a very promising laboratory to gain insight into the outburst properties and magnetar emission mechanisms. Methods. We performed a detailed timing and spectral analysis of four Chandra, three INTEGRAL, and one XMM-Newton observations collected over a two week interval after the outburst onset in January 2009. Several Swift pointings, covering a 1.5 year interval, were also analyzed in order to monitor the decay of the X-ray flux. Results. We compare the characteristics of the two outbursts, as well as those of the active and quiescent states. We also discuss the long-term X-ray flux history of 1 1547.0-5408 since its first detection in 1980, and show that the source displays three flux levels: low, intermediate and high.
KW - X-rays: stars
KW - pulsars: individual: 1E 1547.0-5408
KW - stars: magnetars
KW - stars: magnetic field
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U2 - 10.1051/0004-6361/201016197
DO - 10.1051/0004-6361/201016197
M3 - Article
AN - SCOPUS:79952976701
SN - 0004-6361
VL - 529
JO - Astronomy and Astrophysics
JF - Astronomy and Astrophysics
M1 - A19
ER -