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

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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Contributor : Nathalie Martin <>
Submitted on : Wednesday, May 16, 2012 - 2:00:34 PM
Last modification on : Monday, October 13, 2014 - 3:00:43 PM

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P. Slane, J. P. Hughes, T. Temim, R. Rousseau, D.L Castro, et al.. A Broadband Study of the Emission from the Composite Supernova Remnant MSH 11-62. The Astrophysical Journal, 2012, 749, pp.131. <10.1088/0004-637X/749/2/131>. <in2p3-00698357>

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