Price P A, Fox D W, Kulkarni S R, Peterson B A, Schmidt B P, Soderberg A M, Yost S A, Berger E, Djorgovski S G, Frail D A, Harrison F A, Sari R, Blain A W, Chapman S C
RSAA, ANU, Mt Stromlo Observatory, via Cotter Rd, Weston Creek, ACT 2611, Australia.
Nature. 2003 Jun 19;423(6942):844-7. doi: 10.1038/nature01734.
Past studies of cosmological gamma-ray bursts (GRBs) have been hampered by their extreme distances, resulting in faint afterglows. A nearby GRB could potentially shed much light on the origin of these events, but GRBs with a redshift z <or= 0.2 have been estimated to occur only rarely, about once per decade. Here we report the discovery of the bright optical afterglow emission from the burst of 29 March 2003 (GRB030329; ref. 2). The brightness of the afterglow and the prompt report of its position resulted in extensive follow-up observations at many wavelengths, along with the measurement of the redshift, z = 0.169 (ref. 4). The gamma-ray and afterglow properties of GRB030329 are similar to those of GRBs at cosmological redshifts. Observations have already identified the progenitor as a massive star that exploded as a supernova.
过去对宇宙伽马射线暴（GRBs）的研究因它们极远的距离而受阻，这导致余晖很微弱。一个距离较近的伽马射线暴可能会为这些事件的起源提供很多线索，但据估计红移z≤0.2的伽马射线暴很少发生，大约每十年一次。在此我们报告发现了2003年3月29日爆发（GRB030329；参考文献2）的明亮光学余晖发射。余晖的亮度及其位置的及时报告导致了在许多波长下进行广泛的后续观测，同时测量出红移z = 0.169（参考文献4）。GRB030329的伽马射线和余晖特性与宇宙学红移的伽马射线暴相似。观测已经确定其前身是一颗作为超新星爆发的大质量恒星。
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