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Gamma-ray and X-ray luminosities from spin-powered pulsars in the full polar cap cascade model

Bing Zhang·Alice K. Harding
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Abstract

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 $L_γ\propto (L_{\rm sd})^{1/2}$ 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.

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Bing Zhang, Alice K. Harding. 1999-11-03. Gamma-ray and X-ray luminosities from spin-powered pulsars in the full polar cap cascade model. https://doi.org/10.1063/1.1303217

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