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arXiv 1908.09269astro-ph.HE
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HESS J1832-085的超新星遗迹对应物

A Supernova Remnant Counterpart for HESS J1832-085

Nigel I. Maxted, M. D. Filipovic, N. Hurley-Walker, I. Bojicic, G. P. Rowell, F. Haberl, A. J. Ruiter, I. R. Seitenzahl, F. Panther, G. F. Wong, C. Braiding, M.… 展开作者

Nigel I. Maxted, M. D. Filipovic, N. Hurley-Walker, I. Bojicic, G. P. Rowell, F. Haberl, A. J. Ruiter, I. R. Seitenzahl, F. Panther, G. F. Wong, C. Braiding, M. Burton, G. Puhlhofer, H. Sano, Y. Fukui, M. Sasaki, W. Tian, H. Su, X. Cui, D. Leahy, P. J. Hancock

摘要:

我们研究新的银河系超新星遗迹(SNR)候选者,G23.11+0.18,由默奇森宽场阵列(MWA)射电望远镜。我们描述了候选者的形态,并在70- 170 MHz域中找到-0.63+/-0.05的谱指数。高能立体系统(HESS)数据中的TeV伽马射线探测支持G23.11+0.18的SNR性质,并表明G23.11+0.18正在加速超过TeV能量的粒子,从而使该物体成为一个有前途的新宇宙线强子源候选者。在目前的光学、红外线和X射线数据集中无法看到残留物。然而,我们确实发现了CO示踪分子气体在视线速度为~85 km/s时的下降,这表明存在G23.11+0.18祖先风吹气泡。此外,发现的分子气体团块以邻近的速度朝向HESS J1832-085,这一发现坚持了强子伽马射线产生机制在残骸北部似乎是合理的这一观点。基于这些形态学的论点,我们提出了一个星际介质协会G23.11+0.18在4.6+/-0.8千秒差距的运动学距离。

英文摘要:

We examine the new Galactic supernova remnant (SNR) candidate, G23.11+0.18, as seen by the Murchison Widefield Array (MWA) radio telescope. We describe the morphology of the candidate and find a spectral index of -0.63+/-0.05 in the 70-170MHz domain. A coincident TeV gamma-ray detection in High-Energy Stereoscopic System (HESS) data supports the SNR nature of G23.11+0.18 and suggests that G23.11+0.18 is accelerating particles beyond TeV energies, thus making this object a promising new cosmic ray hadron source candidate. The remnant cannot be seen in current optical, infrared and X-ray data-sets. We do find, however, a dip in CO-traced molecular gas at a line-of-sight velocity of ~85 km/s, suggesting the existence of a G23.11+0.18 progenitor wind-blown bubble. Furthermore, the discovery of molecular gas clumps at a neighbouring velocity towards HESS J1832-085 adheres to the notion that a hadronic gamma-ray production mechanism is plausible towards the north of the remnant. Based on these morphological arguments, we propose an interstellar medium association for G23.11+0.18 at a kinematic distance of 4.6+/-0.8 kpc.

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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