本文選題：伽瑪暴 + 雙噴流　； 參考：《廣西大學(xué)學(xué)報(bào)(自然科學(xué)版)》2015年03期

【摘要】：伽瑪暴余輝的雙拐折行為可以用雙噴流成份結(jié)構(gòu)模型得到較好的解釋,但至今其物理參數(shù)還未解。為給出其相應(yīng)的物理參數(shù),文中將對(duì)具有雙噴流成份的伽瑪暴光學(xué)余輝進(jìn)行統(tǒng)計(jì)分析,用外激波模型時(shí)域指數(shù)α和頻域指數(shù)β的關(guān)系(closure relation)對(duì)數(shù)據(jù)進(jìn)行限制,得到GRB 071003,GRB 080319B,GRB 090426和GRB 100219A共4個(gè)具有外激波模型的伽瑪暴雙成份噴流特征。這些伽瑪暴第一個(gè)噴流成份的張角都在1°以內(nèi),而第二個(gè)噴流成份的張角增大到2°~7°,與單成份噴流的張角一致。其各向同性輻射能量在1051~1054erg,電子譜指數(shù)p約為2,比典型值2.3硬。長(zhǎng)暴能較好符合Amati關(guān)系。
[Abstract]:The double turning behavior of the afterglow of gamma storm can be well explained by the double jet component structure model, but its physical parameters have not been solved yet. In order to give the corresponding physical parameters, the statistical analysis of gamma exposure afterglow with double jet composition is carried out, and the data are restricted by the relationship between the time-domain exponent 偽 and the frequency-domain exponent 尾 of the external shock model. GRB 071003 GRB080319BGRB 090426 and GRB 100219A have been obtained with four gamma storm two-component jet characteristics with external shock model. The opening angle of the first jet component of these gamma-ray bursts is less than 1 擄, while that of the second jet component increases to 2 擄/ 7 擄, which is consistent with that of the single-component jet. The isotropic radiation energy is 1051 ~ 1054 erg and the electron spectrum exponent p is about 2, which is harder than the typical value of 2.3. The long burst can fit the Amati relation well.
【作者單位】： 廣西大學(xué)物理科學(xué)與工程技術(shù)學(xué)院國(guó)家天文臺(tái)廣西大學(xué)天體物理和空間科學(xué)研究中心;廣西中醫(yī)藥大學(xué)數(shù)理教研室;廣西相對(duì)論天體物理重點(diǎn)實(shí)驗(yàn)室;
【基金】：國(guó)家自然科學(xué)基金資助項(xiàng)目(11303005,U1331202) 廣西自然科學(xué)基金資助項(xiàng)目(2013GXNSFFA019001) 廣西高等學(xué)校科研項(xiàng)目(201204LX206) 新世紀(jì)廣西高等教育教學(xué)改革工程項(xiàng)目(2012JGB107,2013JGZ100)
【分類號(hào)】：P172.3

【參考文獻(xiàn)】

相關(guān)期刊論文 前4條

1 陸睿靜;鄧家干;;一個(gè)新光度指示器:熵縮放指數(shù)[J];廣西大學(xué)學(xué)報(bào)(自然科學(xué)版);2010年05期

2 孔思偉;黃永鋒;鄭廣生;陸W，

本文編號(hào)：1883241