CYCLOTRON HARMONICS IN ACCRETING PULSARS AND GAMMA-RAY BURSTERS - EFFECT OF 2-PHOTON PROCESSES

被引：28

作者：

ALEXANDER, SG

MESZAROS, P

机构：

[1] Dept. of Astronomy and Astrophysics, 525 Davey Laboratory, Pennsylvania State University, University Park

来源：

ASTROPHYSICAL JOURNAL | 1991年 / 372卷 / 02期

关键词：

GAMMA-RAYS; BURSTS; LINE FORMATION; PULSARS; RADIATION MECHANISMS; RADIATIVE TRANSFER; STARS; ACCRETION; MAGNETIC; X-RAYS; BINARIES; SPECTRA;

D O I：

10.1086/170001

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We discuss the radiative transfer at the cyclotron first, second, and third harmonics for simplified accreting pulsar and gamma-ray burster emission regions. We include two-photon scattering as well as two-photon emission, which play a major role in determining the line-strength ratio. Stimulated effects are also important for accurately modeling the optically thick line and continuum regions. These calculations are compared with recent observations of accreting pulsars and gamma-ray burst sources, showing a qualitative agreement. We find that the cyclotron harmonic lines should be strongly polarized.

引用

页码：565 / 572

页数：8

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