The flux-E_p relation within GRB060218 in comparison with typical GRB pulses  

作　　者：DONG Wei,LIANG EnWei & LU RuiJing Physical Science & Technology College,Guangxi University,Nanning 530004,China 

出　　处：《Science China(Physics,Mechanics & Astronomy)》2010年第S1期78-81,共4页中国科学：物理学、力学、天文学（英文版）

基　　金：supported by the National Basic Research Program of China (Grant No. 2009CB824800);the National Natural Science Foundation of China (Grant Nos. 10873002 and 10747001);Guangxi SHI-BAI-QIAN Project (Grant No. 2007201);the Program for 100 Young and Middle-aged Disciplinary Leaders in Guangxi Higher Education Institutions,and the Research Foundation of Guangxi University (Grant No. M30520)

摘　　要：The prompt gamma-ray/X-ray emission of gamma-ray burst(GRB) 060218 was simultaneously observed by the Burst Alert Telescope(BAT) and X-ray Telescope(XRT) onboard Swift.Its peak energy of the joint νfν spectrum(Ep) clearly evolves with time from tens of keV to-1 keV,crossing both the BAT and XRT bands.The best fit yields log Ep=(4.61± 0.23)+(-1.29±0.08) log t,with a correlation coefficient of 0.98 and a chance probability of p【10-4.We derive its bolometric flux(F)in the 0.01-10 4 keV band,and find that its F-Ep relation,with a power-law index of 0.37,is much shallower than that observed in typical GRB pulses.Discussion of this shallowness is presented.The prompt gamma-ray/X-ray emission of gamma-ray burst(GRB) 060218 was simultaneously observed by the Burst Alert Telescope(BAT) and X-ray Telescope(XRT) onboard Swift.Its peak energy of the joint νfν spectrum(Ep) clearly evolves with time from tens of keV to-1 keV,crossing both the BAT and XRT bands.The best fit yields log Ep=(4.61± 0.23)+(-1.29±0.08) log t,with a correlation coefficient of 0.98 and a chance probability of p<10-4.We derive its bolometric flux(F)in the 0.01-10 4 keV band,and find that its F-Ep relation,with a power-law index of 0.37,is much shallower than that observed in typical GRB pulses.Discussion of this shallowness is presented.

关 键 词：GAMMA-RAY BURSTS GAMMA-RAYS observations HIGH-ENERGY phenomenon radiation mechanism 

分 类 号：P172.3[天文地球—天文学]