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arXiv · 1202.3371

A Broadband Study of the Emission from the Composite Supernova Remnant MSH 11-62

Patrick Slane·John P. Hughes·Tea Temim·Romain Rousseau·Daniel Castro·Dillon Foight·B. M. Gaensler·Stefan Funk·Marianne Lemoine-Goumard·Joseph D. Gelfand·David A. Moffett·Richard G. Dodson·Joseph P. Bernstein
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Abstract

MSH 11-62 (G291.1-0.9) is a composite supernova remnant for which radio and X-ray observations have identified the remnant shell as well as its central pulsar wind nebula. The observations suggest a relatively young system expanding into a low density region. Here we present a study of MSH 11-62 using observations with the Chandra, XMM-Newton, and Fermi observatories, along with radio observations from the Australia Telescope Compact Array (ATCA). We identify a compact X-ray source that appears to be the putative pulsar that powers the nebula, and show that the X-ray spectrum of the nebula bears the signature of synchrotron losses as particles diffuse into the outer nebula. Using data from the Fermi LAT, we identify gamma-ray emission originating from MSH 11-62. With density constraints from the new X-ray measurements of the remnant, we model the evolution of the composite system in order to constrain the properties of the underlying pulsar and the origin of the gamma-ray emission.

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Patrick Slane, John P. Hughes, Tea Temim, Romain Rousseau, Daniel Castro, Dillon Foight, B. M. Gaensler, Stefan Funk, Marianne Lemoine-Goumard, Joseph D. Gelfand, David A. Moffett, Richard G. Dodson, Joseph P. Bernstein. 2012-02-15. A Broadband Study of the Emission from the Composite Supernova Remnant MSH 11-62. https://doi.org/10.1088/0004-637x/749/2/131

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