MODELING MULTI-WAVELENGTH PULSE PROFILES OF THE MILLISECOND PULSAR PSR B1821-24

被引：4

作者：

Du, Yuanjie ^{[1
]}

Qiao, Guojun ^{[2
]}

Shuai, Ping ^{[1
]}

Bei, Xiaomin ^{[1
]}

Chen, Shaolong ^{[1
]}

Fu, Linzhong ^{[1
]}

Huang, Liangwei ^{[1
]}

Lin, Qingqing ^{[1
]}

Meng, Jing ^{[1
]}

Wu, Yaojun ^{[1
]}

Zhang, Hengbin ^{[1
]}

Zhang, Qian ^{[1
]}

Zhang, Xinyuan ^{[1
]}

机构：

[1] Qian Xuesen Lab Space Technol, Beijing 100094, Peoples R China

[2] Peking Univ, Sch Phys, Beijing 100871, Peoples R China

来源：

ASTROPHYSICAL JOURNAL | 2015年 / 801卷 / 02期

基金：

中国国家自然科学基金;

关键词：

acceleration of particles; pulsars: general; pulsars: individual (PSR B1821-24); radiation mechanisms: non-thermal; GAMMA-RAY EMISSION; GLOBULAR-CLUSTER M28; LIGHT CURVES; ANNULAR GAP; RADIO; MAGNETOSPHERE; RADIATION;

D O I：

10.1088/0004-637X/801/2/131

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

PSR B1821-24 is a solitary millisecond pulsar that radiates multi-wavelength pulsed photons. It has complex radio, X-ray, and gamma-ray pulse profiles with distinct peak phase separations that challenge the traditional caustic emission models. Using the single-pole annular gap model with a suitable magnetic inclination angle (alpha = 40 degrees) and viewing angle (zeta = 75 degrees), we managed to reproduce its pulse profiles of three wavebands. It is found that the middle radio peak originated from the core gap region at high altitudes, and the other two radio peaks originated from the annular gap region at relatively low altitudes. Two peaks of both X-ray and gamma-ray wavebands basically originated from the annular gap region, while the gamma-ray emission generated from the core gap region contributes somewhat to the first gamma-ray peak. Precisely reproducing the multi-wavelength pulse profiles of PSR B1821-24 enables us to understand emission regions of distinct wavebands and justify pulsar emission models.

引用

页数：4

共 33 条

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