Statistical properties of GRB polarization

Kenji Toma, Takanori Sakamoto, Joanne E. Hill, Bing Zhang, Ryo Yamazaki, Kunihito Ioka, Takashi Nakamura

研究成果: 書籍の章/レポート/Proceedings会議への寄与査読

抄録

In spite of extensive efforts of the spectral and lightcurve observations, the emission mechanism of γ-ray bursts (GRBs) is still unclear. Recently the observational techniques of X-ray and γ-ray polarizations have been developed rapidly, and several satellites with high sensitivity for such high energy polarizations have been planned. They will provide us the first definitive detections of GRB polarizations and enable us to discuss their statistical properties. We calculate the distribution of GRB polarizations in the synchrotron models (with globally ordered magnetic field and with small-scale random magnetic field) and Compton drag model. The results show that the distribution of the polarization degrees of ∼100 bursts detected by a realistic polarimeter satellite, such as POET, may distinguish the three models, and provide direct diagnostics of the emission mechanism, the magnetic field configuration, and the geometry of GRB outflows.

本文言語英語
ホスト出版物のタイトル2008 Nanjing Gamma-Ray Burst Conference
ページ195-200
ページ数6
DOI
出版ステータス出版済み - 2008
イベント2008 Nanjing Gamma-Ray Burst Conference - Nanjing, 中国
継続期間: 2008 6月 232008 6月 27

出版物シリーズ

名前AIP Conference Proceedings
1065
ISSN(印刷版)0094-243X
ISSN(電子版)1551-7616

会議

会議2008 Nanjing Gamma-Ray Burst Conference
国/地域中国
CityNanjing
Period08/6/2308/6/27

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