Astronomy and Astrophysics – Astrophysics
Scientific paper
1999-11-03
Astronomy and Astrophysics
Astrophysics
To appear in Proc. 5th Compton Symposium, Portsmouth, New Hampshire, concise version of the ApJ paper
Scientific paper
10.1063/1.1303217
We modify the conventional curvature radiation (inverse Compton scattering) + synchrotron radiation polar cap cascade model by including the inverse Compton scattering of the higher generation pairs. Within the framework of the space-charge-limited-flow acceleration model with frame-dragging proposed by Harding & Muslimov (1998), such a full polar cap cascade scenario can well reproduce the $L_\gamma \propto (L_{\rm sd})^{1/2}$ and the $L_x \sim 10^{-3} L_{\rm sd}$ dependences observed from the known spin-powered pulsars. According to this model, the ``pulsed'' soft ROSAT-band X-rays from most of the millisecond pulsars might be of thermal origin, if there are no strong multipole magnetic components near their surfaces.
Harding Alice K.
Zhang Bing
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