天体物理学
伽马射线暴
灯光曲线
余辉
喷出物
亮度
X射线
中子星
休克(循环)
作者
M. Della Valle,G. Chincarini,Nino Panagia,Gianpiero Tagliaferri,D. Malesani,Vincenzo Testa,D. Fugazza,Sergio Campana,Stefano Covino,Vanessa Mangano,L. A. Antonelli,P. D'Avanzo,Kevin Hurley,I. F. Mirabel,L J Pellizza,Silvia Piranomonte,Luigi Stella
出处
期刊:Nature
[Springer Nature]
日期:2006-12-21
卷期号:444 (7122): 1050-1052
被引量:387
摘要
Gamma-ray bursts (GRBs) are short, intense flashes of soft gamma-rays coming from the distant Universe. Long-duration GRBs (those lasting more than approximately 2 s) are believed to originate from the deaths of massive stars, mainly on the basis of a handful of solid associations between GRBs and supernovae. GRB 060614, one of the closest GRBs discovered, consisted of a 5-s hard spike followed by softer, brighter emission that lasted for approximately 100 s (refs 8, 9). Here we report deep optical observations of GRB 060614 showing no emerging supernova with absolute visual magnitude brighter than M(V) = -13.7. Any supernova associated with GRB 060614 was therefore at least 100 times fainter, at optical wavelengths, than the other supernovae associated with GRBs. This demonstrates that some long-lasting GRBs can either be associated with a very faint supernova or produced by different phenomena.
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