Recent Progress on Gamma-Ray Bursts and GrB Cosmology Zigao dai Department of Astronomy, Nanjing University Sino-French workshop, Beijing, 08/30/2006
Recent Progress on Gamma-Ray Bursts and GRB Cosmology Zigao Dai Department of Astronomy, Nanjing University Sino-French workshop, Beijing, 08/30/2006
30000 20000 10000 Ime in seconds
Gamma-Ray bursts T 600FTTTVTTTTTTTTTT 3B910507 3B90523 910717-16386 0a7911 1000 00 0005 5001000 n03 002}910430461721 0591050325454 40 rTu 十 0.003 5000000000 02904n 2000 910601-69736 0.007 20003Bg1o 0.005 0sE91081469275 0.1 002E⊥⊥⊥ 20 020050010020000001000 Time since GRB-Trigger (s) 张盘/ke Temporal features: diverse and ectral features: broken power laws spiky light curves. ith e of a few tens to hundreds of ke v
Spectral features: broken power laws with Ep of a few tens to hundreds of keV Temporal features: diverse and spiky light curves. Gamma-Ray Bursts
Bimodal distribution in durations 100 ◇ BATSE ■SAX 8:8- ◇ 9888 ◇ sW 8 80608 ◇◇◇ ◇8:∞3 8◇ ◇ ◇◇■ shor long 2 S 001 01 90%Width 10 100 1000
Bimodal distribution in durations shor t long 2 s
Outline . Pre-Swift progress lI. Recent progress and implications IlL. GRB cosmology
Outline I. Pre-Swift progress II. Recent progress and implications III. GRB cosmology