X-Ray Emission from the Double Pulsar System J0737-3039

Details X-Ray Emission from the Double Pulsar System J0737-3039 X-Ray Emission from the Double Pulsar System J0737-3039

2004-02-22

arxiv.org/abs/astro-ph/0402518v1

Astrophys.J. 605 (2004) L41-L44

Astronomy and Astrophysics

Astrophysics

5 pages, 4 figures, accepted by ApJ Letters

Scientific paper

10.1086/392511

We report on a 10 ksec observation of the double pulsar system J0737-3039 obtained with the Chandra X-ray Observatory's Advanced CCD Imaging Spectrometer. We detect the system as a point source with coordinates (J2000) RA = 07:37:51.23, Decl. = -30:39:40.9, making this the first double neutron star system to be detected at X-ray energies. Only 77 source counts are detected. The data are represented satisfactorily by a power-law spectrum with photon index = 2.9 +/- 0.4. The inferred 0.2-10 keV luminosity is approximately 2e30 erg/s for a distance of 0.5 kpc. We do not detect any significant variability with orbital phase in these data, which span one full orbit. These results are consistent with the X-ray emission originating solely from the magnetosphere of the energetic A pulsar, with an efficiency for conversion of rotational energy to X-rays in this band of roughly 0.04%, although we cannot exclude other possibilities.

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