arXiv 0705.38462007-05astro-ph

SN 1987 A与伽马射线暴的联系

The SN 1987A Link to Gamma-Ray Bursts

John Middleditch

备注：: 5 pages, 3 figures, contributed talk proceedings for "Supernova 1987A: 20 Years After: Supernovae and Gamma-Ray Bursters" AIP, New York, eds. S. Immler, K.W. Weiler, and R. McCray, v2: ``Figure 3, right'' on page 4. v3: add "sGRBs offset from EGs" to abstract
发表信息：: AIP Conf.Proc.937:107-111,2007
DOI：: 10.1063/1.2803549

摘要：

SN 1987 A的早期测量表明，束流/喷流（BJ）撞击极地喷出物（PE）产生了“神秘点”（MS）。SN闪光需要额外的8天才能击中MS，这在第8天的光学中以2 e39 ergs/s得到证实。在第10天附近开始的光度斜坡表明来自BJ的粒子击中了PE，最快的粒子在0.8 c下移动，MS的光学光度上限为5e 40 ergs/s。SN 1987 A的细节强烈暗示它是由两个共同包层双星的恒星核合并而成，也就是一个由“双简并”（DD）引发的SN，因此它是非核坍缩的球状星团、GRB和SNe中99%的MSP的罗塞塔石碑，包括除了SN 1986 J和更遥远的SN 2006 gy之外的所有最近的SNe。在不需要炸穿SK-69 202的CE的情况下，BJ很可能会在撞击PE时引起完整的长软伽马射线暴（IGRB），因此DD可以产生IGRB。从SN 1987 A到PE的22 lt-d内，伽玛暴的典型0.5度准直产生约100 s的延迟，与观测到的lGRB非瞬发部分的延迟相匹配。由于DD必须是椭圆星系中主要的SN机制，在那里只观察到短而硬的GRB（sGRB），没有CE或PE的DD也必须制造sGRB，因此99%的所有GRB的初始光子谱是已知的，而中子星（NS）-NS合并可能不会产生我们所知道的GRB。对Ia's的观测强烈地表明它们也是DD，这意味着Ia宇宙学中的另一个系统效应，因为如果在它们的DD合并极上有足够的物质损失到核心坍缩，那么Ia's看起来就是Ic's（否则它只会提出它们可能是其他什么的问题）。没有必要发明一些新奇的东西来解释伽马射线暴，比如超新星或超新星。

英文摘要：

Early measurements of SN 1987A indicate a beam/jet (BJ) which hit polar ejecta (PE) to produce the "Mystery Spot" (MS). The SN flash takes an extra 8 d to hit the MS, and this was confirmed at 2e39 ergs/s in the optical at day 8. A ramp in luminosity starting near day 10 indicates particles from the BJ hitting the PE, with the fastest particles traveling at 0.8 c, and an upper limit for the optical luminosity of the MS of 5e40 ergs/s at day 20. The details of SN 1987A strongly suggest that it resulted from a merger of 2 stellar cores of a common envelope (CE) binary, i.e. a "double-degenerate" (DD)-initiated SN, and is thus the Rosetta Stone for 99% of MSPs in the non-core-collapsed globular clusters, GRBs, and SNe, including all recent nearby SNe except SN 1986J and the more distant SN 2006gy. Without having to blast through the CE of Sk -69 202, it is likely that the BJ would have caused a full, long-soft gamma-ray burst (lGRB) upon hitting the PE, thus DD can produce lGRBs. The typical 0.5 deg collimation of a GRB, over the 22 lt-d from SN 1987A to its PE, produces ~100 s of delay, MATCHING the observed delay of the non-prompt parts of lGRBs. Because DD must be the dominant SN mechanism in elliptical galaxies, where only short, hard GRBs (sGRBs) have been observed, DD without CE or PE must also make sGRBs, thus the initial photon spectrum of 99% of ALL GRBs is KNOWN, & neutron star (NS)-NS mergers may not make GRBs as we know them. Observations of Ia's strongly suggest that these are also DD, implying another systematic effect in Ia Cosmology, as Ia's will appear to be Ic's when viewed from their DD merger poles, given sufficient matter above that lost to core- collapse (otherwise it would just beg the question of what ELSE they could possibly be). There is no need to invent exotica, such as collapsars or hypernovae, to account for GRBs.

机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。

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英文摘要：

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