Astronomy and Astrophysics – Astrophysics
Scientific paper
2003-05-07
Astrophys.J. 593 (2003) 1013-1023
Astronomy and Astrophysics
Astrophysics
29 pages, 4 figures, accepted for publication in ApJ
Scientific paper
10.1086/376567
We present a new model for the synchrotron compact nebular emissions for Vela and PSR B1706-44, and derive fundamental pulsar/plerion parameters such as the pair production multiplicity, M, and wind magnetization parameter, sigma. The pair cascade above the pulsar polar cap, combined with the energy from the pulsar wind, injects a pair plasma into the surrounding environment. This wind, consisting of particles and fields, is shocked by the environment, resulting in synchrotron emission from "thermalized" pairs in a compact nebula. The broad band nebular spectrum depends crucially on the spindown power, distance, pair multiplicity, pulsar wind shock radius and sigma at this shock. We construct such a model for the particle spectra in the compact X-ray nebula of Vela and PSR B1706-44. Fits to the multiwavelength spectra of these sources indicate that 300
de Jager Ocker C.
Sefako Ramotholo R.
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