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Title:
Non-thermal emissions from outer magnetospheric accelerator of pulsars
Authors:
Takata, J.; Chang, H.-K.
Affiliation:
AA(Institute of Astronomy and Astrophysics, and Theoretical Institute for Advanced Research in Astrophysics, Academia Sinica; and National Tsing Hua University, Taipei Taiwan), AB(Department of Physics, National Tsing Hua University, Hsinchu, Taiwan; Institute of Astronomy, National Tsing Hua University, Hsinchu, Taiwan)
Publication:
HIGH ENERGY GAMMA-RAY ASTRONOMY: Proceedings of the 4th International Meeting on High Energy Gamma-Ray Astronomy. AIP Conference Proceedings, Volume 1085, pp. 237-240 (2008). (AIPC Homepage)
Publication Date:
12/2008
Origin:
AIP
PACS Keywords:
Pulsars, Galactic center, bar, circumnuclear matter, and bulge, gamma-ray
DOI:
10.1063/1.3076649
Bibliographic Code:
2008AIPC.1085..237T

Abstract

We study non-thermal emission process in pulsar magnetospheric accelerator (outer gap). We discuss emission process in optical through γ-ray bands. We solve the dynamics in the outer gap in the magnetic meridional plane, which includes the rotation and magnetic axes. We calculate the spectrum of the curvature and synchrotron processes. Using a three-dimensional geometrical model, we compute pulse profile and polarization characteristics. We compare the model results with the observations of the Vela pulsar and the Crab pulsar. We demonstrate that the observed multi-peak structure of the pulse profile observed by RXTE can be reproduced by the present study with the outward and inward emissions from the outer gap accelerator. The calculated polarization characteristics are in general consistent with the Crab optical data.
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