1. X-ray Studies of the Pulsar Wind Nebula Around PSR B0540-69
- Author
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Stephen S. Holt, R. M. Williams, Robert Petre, and Una Hwang
- Subjects
Physics ,Emission nebula ,Pulsar ,Millisecond pulsar ,Astrophysics::High Energy Astrophysical Phenomena ,Pulsar planet ,Astronomy ,Astrophysics ,Pulsar wind nebula ,Astrophysics::Galaxy Astrophysics - Abstract
The pulsar wind nebula (PWN) surrounding the 50-ms pulsar B0540-69 in the Large Magellanic Cloud shares many properties with the Crab Nebula, the canonical Galactic PWN. We have used the ACIS instrument on the Chandra X-ray Observatory to perform spatially resolved spectroscopy of the PWN. The spectrum of the inner 10″ is characterized by a simple power law, with a spectral index that steepens strongly with radius. Outside the central 10″ the spectra also require a thermal component. This diameter corresponds to a shell detected in [OIII], suggesting that this shell represents a skin around the PWN, in analogy to the Crab. We infer the value of several key PWN parameters, including σ, the average ratio of electromagnetic to particle flux.
- Published
- 2004
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