Development of a new background reduction method for wxm/hete-2 and its application for bright GRB spectra

I. Takahashi*, Y. E. Nakagawa, A. Yoshida, S. Sugita, T. Tamagawa, M. Kuwahara, N. Kawai, M. Arimoto, T. Shimokawabe, T. Ishimura, N. Vasquez, M. Suzuki, R. Sato, Y. Shirasaki, George R. Ricker

*この研究の対応する著者

研究成果: Conference contribution

抄録

HETE-2 detected gamma-ray bursts (GRBs) since its launch on 9 October 2000. For spectral analyses using data of WXM on-board HETE-2, background spectra are conventionally obtained with time regions before and/or after prompt emission. In some cases, the background spectra change during the prompt emission and/or the downlink trouble causes a loss of data around the prompt emission. If this is the case, the problem seems to lie in the fact that the conventional method cannot obtain correct background spectra. To make more appropriate background spectra, we develop a new analysis method using mask patterns of the WXM. The background spectra are estimated with shaded regions by the WXM mask pattern using the prompt emission data. Our new method might obtain a reliable result for a spectrum of GRB 030329. In this paper, we introduce our new analysis method and show a preliminary spectral result.

本文言語English
ホスト出版物のタイトルGamma-Ray Bursts 2007 - Proceedings of the Santa Fe Conference
ページ174-177
ページ数4
1000
DOI
出版ステータスPublished - 2008
外部発表はい
イベントSanta Fe Conference on Gamma-Ray Bursts 2007, GRB 2007 - Santa Fe, NM
継続期間: 2007 11月 52007 11月 9

Other

OtherSanta Fe Conference on Gamma-Ray Bursts 2007, GRB 2007
CitySanta Fe, NM
Period07/11/507/11/9

ASJC Scopus subject areas

  • 物理学および天文学(全般)

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