A first XMM-Newton look at the relativistic double pulsar PSR J0737-3039

Details A first XMM-Newton look at the relativistic double pulsar PSR J0737-3039 A first XMM-Newton look at the relativistic double pulsar PSR J0737-3039

2004-07-15

arxiv.org/abs/astro-ph/0407312v1

Astrophys.J. 612 (2004) L49-L52

Astronomy and Astrophysics

Astrophysics

14 pages, 3 postscript figures. Accepted for publication in ApJL

Scientific paper

10.1086/424038

We present the results of a 50 ks long X-ray observation of the relativistic double pulsar system PSR J0737-3039 obtained with the XMM-Newton satellite in March 2004. The source has a soft spectrum (power law photon index = 3.5(+0.5,-0.3)) and a 0.2-10 keV luminosity of ~3x10^30 erg/s (assuming a distance of 500 pc), consistent with the values derived from a previous Chandra observation. No flux variations have been detected, implying the absence of large orbital modulations. The high time resolution of the EPIC instrument has allowed us to perform the first search for X-ray pulsations from this system. The result was negative, with an upper limit of 60% on the pulsed fraction of the 22 ms pulsar.

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