Volume 477, Number 1, January I 2008
|Page(s)||249 - 253|
|Section||Stellar structure and evolution|
|Published online||06 November 2007|
INTEGRAL detection of the pulsar wind nebula in PSR J1846–0258
School of Physics & Astronomy, University of Southampton, Highfield, SO17 1BJ, UK e-mail: firstname.lastname@example.org
2 INAF/IASF, via del Fosso del Cavaliere 100, Roma 00113, Italy
3 INAF/IASF, via P. Gobetti 101, Bologna 40129, Italy
Accepted: 26 October 2007
Aims.We communicate the detection of soft (20–200 keV) γ-rays from the pulsar and pulsar wind nebula of PSR J1846-0258 and aim to identify the component of the system which is responsible for the γ-ray emission.
Methods.We combine spectral information from the INTEGRAL γ-ray mission with archival data from the Chandra X-ray Observatory to pinpoint the source of soft γ-ray emission.
Results.Our analysis shows that the soft γ-rays detected from PSR J1846-0258 include emission from both the pulsar and the pulsar wind nebula, but the measured spectral shape is dominated by the pulsar wind nebula. We discuss PSR J1846-0258 in the context of rotation-powered pulsars with high magnetic field strengths and review the anomalously high fraction of spin-down luminosity converted into X- and γ-ray emission in light of a possible overestimate of the distance to this pulsar.
Key words: stars: pulsars: individual: PSR J1846-0258 / ISM: supernova remnants / gamma rays: observations
© ESO, 2007
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