Astronomy and Astrophysics – Astrophysics
Scientific paper
2003-05-26
Astronomy and Astrophysics
Astrophysics
6 pages, 5 figures. To appear in ApJL July 10 2003 (submitted April 10 2003, accepted May 22 2003)
Scientific paper
10.1086/377070
We report the Chandra Advanced CCD Imaging Spectrometer detection of the X-ray counterpart of the high magnetic field, ~1600 year-old, 407 ms radio pulsar J1119-6127 associated with the supernova remnant G292.2-0.5. The powerful imaging capability of Chandra also unveiled, for the first time, a faint 3"x6" pulsar wind nebula (PWN) at energies above ~1.2 keV. The X-ray emission from the pulsar and its associated nebula is well described by an absorbed power law model with a photon index of 2.2 (1.9-2.8). The corresponding 0.5-10 keV unabsorbed X-ray luminosity is 5.5(2.2-15.5)x10^32 ergs/s (at 6 kpc). When compared to two other pulsars with similar spin and magnetic properties, J1119-6127 stands out as being the least efficient at turning rotational kinetic energy into X-ray emission. This study shows that high magnetic field radio pulsars can be significant X-ray emitters and Chandra is needed to study the emission properties of the pulsars and associated faint PWNe.
Gonzalez Marjorie
Safi-Harb Samar
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