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arXiv 0908.3226astro-ph.HE
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银河系瞬变行星SWIFT J195509 +261406的光学耀斑模型

A model for the optical flares from the Galactic tran-sient SWIFT J195509+261406

Ming Xu, Y. F. Huang

摘要:

银河系硬X射线瞬变SWIFT J195509+261406最初被观测到是一个伽马射线暴GRB 070610。在爆发后的3天内,观测到了40多个光学耀斑。在这里,我们提出,这一奇特的事件应与一个白矮星。硬X射线爆发本身可能是由围绕白矮星运行的两颗行星碰撞引发的。在碰撞中产生的一些破裂碎片在几天内落在白矮星的表面,通过回旋辐射产生了观测到的光学耀斑。我们的模型可以满意地解释观测的基本特征。

英文摘要:

The Galactic hard X-ray transient SWIFT J195509+261406 was first observed as a gamma-ray burst GRB 070610. Within 3 days after the burst, more than forty optical flares had been observed. Here we propose that this peculiar event should be associated with a white dwarf. The hard X-ray burst itself may be triggered by the collision between two planets orbiting the white dwarf. Some cracked frag-ments produced in the collision then fall onto the surface of the white dwarf in several days, giving birth to the observed optical flares via cyclotron radiation. Our model can satisfactorily explain the basic features of the observations.

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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