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arXiv 0709.1320astro-ph
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CANGAROO-III寻找SN 1987 A及其周围的γ射线

CANGAROO-III Search for Gamma Rays from SN 1987A and the Surrounding Field

R. Enomoto

摘要:

SN 1987 A的光学图像显示了一个三环结构。最近,内(尘埃)环的亮度和热点数量有所增加,这表明超新星冲击波已经与致密的预先存在的星周介质发生了碰撞,这一情况得到了无线电和X射线观测的支持。这样的冲击环境被广泛认为会导致带电粒子加速,并伴随着非常高能量的伽马射线的发射。在这里,我们报告的观测结果,在2004年和2006年产生的TeV的伽马射线通量的上限,这与理论预测相比。此外,我们设置的TeV流量的上限为四个高能量的对象,这是位于同一领域的观察:超级气泡30 Dor C,蟹状脉冲星PSR B 0540 $-$ 69,X射线双星LMC X-1,和超新星遗迹N157 B。

英文摘要:

Optical images of SN 1987A show a triple ring structure. The inner (dust) ring has recently increased in brightness and in the number of hot spots suggesting that the supernova shock wave has collided with the dense pre-existing circumstellar medium, a scenario supported by radio and X-ray observations. Such a shocked environment is widely expected to result in the acceleration of charged particles, and the accompanying emission of very high energy gamma-rays. Here, we report the results of observations made in 2004 and 2006 which yield upper limits on the TeV gamma-ray flux, which are compared with a theoretical prediction. In addition, we set upper limits on the TeV flux for four high energy objects which are located within the same field of view of the observation: the super-bubble 30 Dor C, the Crab-like pulsar PSR B0540$-$69, the X-ray binary LMC X-1, and the supernova remnant N157B.

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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