Time-Resolved Spectral Variability of the Prompt Emission from GRB 070125 Observed with Suzaku/WAM

NCU Institutional Repository > 理學院 > 天文研究所 > 期刊論文 > Item 987654321/50820

jsp.display-item.identifier=請使用永久網址來引用或連結此文件: http://ir.lib.ncu.edu.tw/handle/987654321/50820

题名:	Time-Resolved Spectral Variability of the Prompt Emission from GRB 070125 Observed with Suzaku/WAM
作者:	Onda,K;Tashiro,MS;Nakagawa,YE;Yamaoka,K;Terada,Y;Ohno,M;Sugita,S;Sakamoto,T;Toma,K;Gandhi,P;Kodaka,N;Iwakiri,W;Urata,Y;Yamauchi,M;Fukazawa,Y
贡献者:	天文研究所
日期:	2010
上传时间:	2012-03-27 18:10:42 (UTC+8)
出版者:	國立中央大學
摘要:	Time-resolved spectral analyses of GRB 070125 with significant photon detections over the MeV regime using Suzaku/WAM data are reported. The prompt emission interval was divided into 10 time regions, and their spectra were reproduced by a Band function or a cutoff power-law model. The spectra show a complex evolution; a soft-hard-soft trend is seen, rather than a typical hard-to-soft monotonic variation. In addition, a flat spectral slope in the low-energy band exceeding the slope expected from a simple synchrotron emission model is suggested in one of the time regions. These results imply that the internal shocks in the relativistic jet of GRB 070125 have different physical conditions. There is a possible excess at similar to 2.2 MeV in the spectrum of 33 seconds after the trigger at a significant level of approximate to 98.5%, where the continuum spectrum is not reproduced by the Band function. These properties are only shown during the short prompt time interval of the prompt emission, and emphasize the utility of the Suzaku/WAM for the study of gamma-ray bursts.
關聯:	PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN
显示于类别:	[天文研究所] 期刊論文

文件中的档案:

档案	描述	大小	格式	浏览次数
index.html		0Kb	HTML	501	检视/开启

在NCUIR中所有的数据项都受到原著作权保护.

社群 sharing

数据加载中.....