Astronomy and Astrophysics – Astrophysics
Scientific paper
2001-02-06
Astronomy and Astrophysics
Astrophysics
Accepted by ApJ; 12 Pages in emulated ApJ format with embedded tables and color figures
Scientific paper
10.1086/321340
PSR J1119-6127 is a recently discovered 1700-year-old radio pulsar that has a very high inferred surface dipolar magnetic field. We present a detailed analysis of a pointed ASCA observation and archival ROSAT data of J1119-6127 and its surroundings. Both data sets reveal extended emission coincident with the newly-discovered radio supernova remnant G292.2-0.5, reported in a companion paper by Crawford et al. (astro-ph/0012287).. A hard point source, offset ~1.5' from the position of the radio pulsar, is seen with the ASCA GIS. No pulsations are detected at the radio period with a pulsed fraction upper limit of 61% (95% confidence). The limited statistics prevent a detailed spectral analysis, although a power-law model with photon index (Gamma=~1-2) describes the data well. Both the spectral model and derived X-ray luminosity are consistent with those measured for other young radio pulsars, although the spatial offset renders an identification of the source as the X-ray counterpart of the pulsar uncertain.
Camilo Fernando
Crawford Fronefield
Gaensler Bryan M.
Kaspi Victoria M.
Pivovaroff Michael J.
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