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arXiv 1902.02215astro-ph.HE
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HESS J1826-130和J1825-137区域中PSR J1826-1334和PSR J1826-1256的新研究

A new study towards PSR J1826-1334 and PSR J1826-1256 in the region of HESS J1825-137 and HESS J1826-130

L. Duvidovich, E. Giacani, G. Castelletti, A. Petriella, L. Supán

摘要:

目标。本文的目的是探测脉冲星风星云HESS J1825-137的残余电子的同步辐射,并研究HESS J1826-130的$γ$射线辐射的起源。方法. HESS J1825-137的研究是在以PSR J1826-1334为中心的新射电观测的基础上进行的。配置B和C中1.4 GHz的Jansky超大阵列。为了研究HESS J1826-130的性质,我们重新处理了用XMM-牛顿获得的未发表的档案数据。结果朝向PSR J1826-1334的新射电连续图像揭示了一个明亮的射电源,脉冲星位于其中心,这表明这一特征可能是在高能量下检测到的PWN紧凑组件的射电对应物。新的1.4 GHz无线电数据没有显示出与HESS J1825-137源的$γ$ -射线中观察到的扩展相当的发射。另一方面,XMM-牛顿对包括PSR J1826-1256在内的区域的研究揭示了一个细长的非热X射线发射星云,脉冲星位于北部边界,尾部朝向极高能量源的峰值。该光谱的特征是幂律,光子指数从脉冲星周围的1.6到星云边缘的2.7,这与电子的同步加速器冷却一致。根据我们的X射线分析,我们提出HESS J1826-130可能是由PSR J1826-1256驱动的PWN通过逆康普顿机制产生的。

英文摘要:

Aims. The goal of this paper is to detect synchrotron emission from the relic electrons of the crushed pulsar wind nebula (PWN) HESS J1825-137 and to investigate the origin of the $γ$-ray emission from HESS J1826-130.\\ Methods. The study of HESS J1825-137 was carried out on the basis of new radio observations centred at the position of PSR J1826-1334 performed with the Karl G. Jansky Very Large Array at 1.4 GHz in configurations B and C. To investigate the nature of HESS J1826-130, we reprocessed unpublished archival data obtained with XMM-Newton.\\ Results. The new radio continuum image towards PSR J1826-1334 reveals a bright radio source, with the pulsar located in its centre, which suggests that this feature could be the radio counterpart of the compact component of the PWN detected at high energy. The new 1.4 GHz radio data do not reveal emission with an extension comparable with that observed in $γ$-rays for the HESS J1825-137 source. On the other hand, the XMM-Newton study of the region including PSR J1826-1256 reveals an elongated non-thermal X-ray emitting nebula with the pulsar located in the northern border and a tail towards the peak of the very high energy source. The spectrum is characterized by a power law with a photon index going from 1.6 around the pulsar to 2.7 in the borders of the nebula, a behaviour consistent with synchrotron cooling of electrons. From our X-ray analysis we propose that HESS J1826-130 is likely produced by the PWN powered by PSR J1826-1256 via the inverse Compton mechanism.

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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