Astronomy and Astrophysics – Astrophysics
Scientific paper
2006-11-07
Astronomy and Astrophysics
Astrophysics
6 pages, 5 figures, accepted for publication on A&A
Scientific paper
10.1051/0004-6361:20065482
Convincing evidence for long-term variations in the emission properties of the anomalous X-ray pulsar 1RXS J170849.0-400910 has been gathered in the last few years. In particular, and following the pulsar glitches of 1999 and 2001, XMM-Newton witnessed in 2003 a decline of the X-ray flux accompanied by a definite spectral softening. This suggested the existence of a correlation between the luminosity and the spectral hardness in this source, similar to that seen in the soft gamma-repeater SGR 1806-20. Here we report on new Chandra and Swift observations of 1RXS J170849.0-400910 performed in 2004 and 2005, respectively. These observations confirm and strengthen the proposed correlation. The trend appears to have now reversed: the flux increased and the spectrum is now harder. The consequences of these observations for the twisted magnetosphere scenario for anomalous X-ray pulsars are briefly discussed.
Campana Sergio
Israel Gian Luca
Rea Nanda
Turolla Roberto
Zane Silvia
No associations
LandOfFree
Swift and Chandra confirm the intensity-hardness correlation of the AXP 1RXS J170849.0-400910 does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Swift and Chandra confirm the intensity-hardness correlation of the AXP 1RXS J170849.0-400910, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Swift and Chandra confirm the intensity-hardness correlation of the AXP 1RXS J170849.0-400910 will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-617011