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arXiv 0707.0832astro-ph
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HESS J1616-508:可能由PSR J1617-5055提供动力

HESS J1616-508: likely powered by PSR J1617-5055

R. Landi, A. De Rosa, A. J. Dean, L. Bassani, P. Ubertini, A. J. Bird

摘要:

HESS J1616-508是TeV天空中最亮的发射体之一。最近用INTEGRAL航天器上的IBIS/ISGRI望远镜进行的观测表明,一颗年轻的、邻近的高能脉冲星PSR J1617-5055是一颗在20-100千电子伏范围内的强有力的软伽马射线发射体。在本文中,我们提出了从INTEGRAL,斯威夫特,BeppoSAX和XMM-牛顿望远镜的所有可用数据的分析,以评估最有可能对应的HESS源。我们发现,燃料的X/γ射线发射的能源是来自脉冲星,无论是在位置形态的基础上,定时的证据和系统的能量。同样,脉冲星的1.2%的自旋能量损失需要为0.1-10 TeV的发射提供动力,这也与已知与脉冲星相关的其他HESS源完全一致。X/伽马射线和VHE源的相对大小与脉冲星发射的母电子的单一源的同步加速器和康普顿损耗的预期寿命一致。我们发现,没有其他已知的对象在附近可以合理地被认为是一个合理的对应HESS源。我们的结论是,有很好的证据来假设HESS J1616-508源是由PSR J1617-5055驱动的,其中同步加速器和逆康普顿过程的组合相结合,以创建从keV到TeV能量的宽带发射器的观察到的形态。

英文摘要:

HESS J1616-508 is one of the brightest emitters in the TeV sky. Recent observations with the IBIS/ISGRI telescope on board the INTEGRAL spacecraft have revealed that a young, nearby and energetic pulsar, PSR J1617-5055, is a powerful emitter of soft gamma-rays in the 20-100 keV domain. In this paper we present an analysis of all available data from the INTEGRAL, Swift, BeppoSAX and XMM-Newton telescopes with a view to assessing the most likely counterpart to the HESS source. We find that the energy source that fuels the X/gamma-ray emissions is derived from the pulsar, both on the basis of the positional morphology, the timing evidence and the energetics of the system. Likewise, the 1.2% of the pulsar's spin down energy loss needed to power the 0.1-10 TeV emission is also fully consistent with other HESS sources known to be associated with pulsars. The relative sizes of the X/gamma-ray and VHE sources are consistent with the expected lifetimes against synchrotron and Compton losses for a single source of parent electrons emitted from the pulsar. We find that no other known object in the vicinity could be reasonably considered as a plausible counterpart to the HESS source. We conclude that there is good evidence to assume that the HESS J1616-508 source is driven by PSR J1617-5055 in which a combination of synchrotron and inverse Compton processes combine to create the observed morphology of a broad-band emitter from keV to TeV energies.

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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