Hard X-ray variability of Magnetar's Tails observed with INTEGRAL

Details Hard X-ray variability of Magnetar's Tails observed with INTEGRAL Hard X-ray variability of Magnetar's Tails observed with INTEGRAL

2007-10-31

arxiv.org/abs/0710.5822v1

AIP Conf.Proc.983:289-291,2008

Astronomy and Astrophysics

Astrophysics

3 pages, 3 figures, proceedings of the conference "40 Years of Pulsars, Millisecond Pulsars, Magnetars and More", Montreal, Au

Scientific paper

10.1063/1.2900166

Magnetar's persistent emission above 10 keV was recently discovered thanks to the imaging capabilities of the IBIS coded mask telescope on board the INTEGRAL satellite. The only two sources that show some degree of long term variability are SGR 1806-20 and 1RXS J170849.0-400910. We find some indications that variability of these hard tails could be the driver of the spectral variability measured in these sources below 10 keV. In addition we report for the first time the detection at 2.8 sigma level of pulsations in the hard X-ray tail of SGR 1806-20.

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