【摘要】：本文首先介紹了近年來(lái)伽瑪暴的觀測(cè)和理論進(jìn)展,隨后分析了分解后光學(xué)和X射線余輝成分之間的關(guān)系,來(lái)診斷它們可能的物理起源。 我們收集到104個(gè)采樣好的光學(xué)與X射線余輝光變曲線的伽瑪暴,基于我們的經(jīng)驗(yàn)擬合后分解出不同的輻射成分。我們著重于冪率衰減的余輝成分,它們可能是伽瑪暴火球的外激波產(chǎn)生的。我們關(guān)聯(lián)分析發(fā)現(xiàn)伽瑪暴光學(xué)與x射線余輝的相關(guān)性可分為三類。第一,在兩個(gè)能段內(nèi)都至少發(fā)現(xiàn)有一個(gè)拐折(這個(gè)比例為18/104,稱為Group Ⅰ);第二,在光學(xué)或者X射線波段的光變曲線里至少發(fā)現(xiàn)一個(gè)拐折的(這個(gè)比例為18/104,其中光學(xué)為3,X射線為15,稱為Group Ⅱ);第三,其它68個(gè)的暴(Group Ⅲ),其中可能是兩波段完全沒(méi)有關(guān)聯(lián),或者因相同時(shí)間范圍的缺乏而不能證論兩波段光學(xué)曲線的時(shí)間特征。我們用標(biāo)準(zhǔn)伽瑪暴模型檢驗(yàn)了Group Ⅰ的光學(xué)與X射線余輝的物理起源。這組里面的一些伽瑪暴里能量注入的現(xiàn)象被發(fā)現(xiàn)。光學(xué)與X射線的拐折通常是復(fù)色的,但一個(gè)試驗(yàn)性的關(guān)系被發(fā)現(xiàn)。大部分的光學(xué)余輝拐折時(shí)間后的衰減斜率與噴流模型一致,但X射線余輝確不是。對(duì)Group Ⅱ和Group Ⅲ的分析發(fā)現(xiàn)光學(xué)與X射線的余輝輻射可能由不同物理起源的成分所主導(dǎo)。
[Abstract]:In this paper, the recent progress in observation and theory of gamma-ray bursts is introduced, and then the relationship between the components of decomposed optics and X-ray afterglow is analyzed to diagnose their possible physical origins. We have collected 104 gamma bursts with sampled optical and X-ray afterglow curves and decomposed different radiation components based on our empirical fitting. We focus on the afterglow components of power decay, which may be generated by the external shock of a gamma-ray fireball. Our correlation analysis shows that the correlation between gamma exposure and X-ray afterglow can be classified into three categories. First, at least one turn was found in both energy bands (a ratio of 18 / 104, called Group I); Second, at least one bend is found in the optical or X-ray band light curves (this ratio is 18 / 104, where the optical X ray is 15, known as Group II); Third, the other 68 Group 鈪，

本文編號(hào)：2316476