调查PMN J1603 $-$ 4904中的源混淆
Investigating source confusion in PMN J1603$-$4904
摘要：
PMN J1603 $-$ 4904可能是一个罕见的年轻射电星系，属于发射$γ$射线的年轻射电星系。到目前为止，只有另一个来源，PKS 1718 $-$ 649得到证实。这些天体可能会转变成更大的射电星系，是理解活动星系核演化的垫脚石。目前还不完全清楚这些年轻的星系，从侧面看，如何产生高能$γ$射线。PMN J1603 $-$ 4904已被TANAMI甚长基线干涉测量（VLBI）观测探测到，并已被多波长观测跟踪。一个费米/LAT $γ$射线源在LAT星表中与它联系在一起。我们已经获得了钱德拉观测的源，以考虑源混淆的可能性，由于费米/LAT相对较大的位置不确定性。目标是研究在PMN J1603 $-$ 4904附近的其他X射线亮源可能是$γ$射线发射的对应物的可能性。与钱德拉/ACIS，我们发现没有其他来源的费米/LAT数据，其中包括一个改进的本地化分析8年的数据的不确定性椭圆。我们进一步研究了X射线通量和光谱。我们的结论是，PMN J1603 $-$ 4904确实是第二个被证实的$γ$射线明亮的年轻射电星系。
英文摘要：
PMN J1603$-$4904 is a likely member of the rare class of $γ$-ray emitting young radio galaxies. Only one other source, PKS 1718$-$649, has been confirmed so far. These objects, which may transition into larger radio galaxies, are a stepping stone to understanding AGN evolution. It is not completely clear how these young galaxies, seen edge-on, can produce high-energy $γ$-rays. PMN J1603$-$4904 has been detected by TANAMI Very Long Baseline Interferometry (VLBI) observations and has been followed-up with multiwavelength observations. A Fermi/LAT $γ$-ray source has been associated with it in the LAT catalogs. We have obtained Chandra observations of the source in order to consider the possibility of source confusion, due to the relatively large positional uncertainty of Fermi/LAT. The goal was to investigate the possibility of other X-ray bright sources in the vicinity of PMN J1603$-$4904 that could be counterparts to the $γ$-ray emission. With Chandra/ACIS, we find no other sources in the uncertainty ellipse of Fermi/LAT data, which includes an improved localization analysis of 8 years of data. We further study the X-ray fluxes and spectra. We conclude that PMN J1603$-$4904 is indeed the second confirmed $γ$-ray bright young radio galaxy.
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。
