论文标题
揭示了Abell 1351中特殊弥散无线电发射的起源
Unveiling The Origin of Peculiar Diffuse Radio Emission in Abell 1351
论文作者
论文摘要
Abell 1351是一个庞大的合并集群，可容纳巨大的无线电光环和光环中的明亮无线电边缘。在本文中，我们使用GMRT 610 MHz和VLA 1.4 GHz档案数据介绍了该集群的第一个光谱分析，并讨论了无线电边缘属性。使用\ textit {chandra}数据，我们报告了在A1351中边缘位置的首个暂定冲击锋的检测，在X射线表面亮度和温度下都不连续。我们的分析加强了先前对检测到的“边缘”的主张是高光度无线电遗物。无线电遗物具有集成的光谱索引$α= -1.63 \ pm 0.33 $和无线电$ $ p_ {1.4 \ mathrm {\ ghz}} = 4.46 \ pm 0.61 \ pm 0.61 \ times10^{24} $ w $ hz^{ - 1} $，具有最大的线性尺寸（ll lls kpc）。无线电频谱指数图显示了冲击下游区域的陡峭。我们的分析有利于颗粒的扩散冲击加速度（DSA）在存在强磁场的情况下的原点。我们还估计了假设Quientartition条件的遗物位置的磁场。
Abell 1351 is a massive merging cluster that hosts a giant radio halo and a bright radio edge blended in the halo. In this paper, we present the first ever spectral analysis of this cluster using GMRT 610 MHz and VLA 1.4 GHz archival data and discuss the radio edge property. Using \textit{Chandra} data, we report the first tentative detection of shock front at the location of the edge in A1351 with discontinuities in both X-ray surface brightness and temperature. Our analysis strengthens the previous claim of the detected "edge" being a high luminosity radio relic. The radio relic has an integrated spectral index $α= -1.63 \pm 0.33$ and radio power $P_{1.4 \mathrm{\ GHz}} = 4.46 \pm 0.61\times10^{24}$ W $Hz^{-1}$ with a largest Linear Size (LLS) of 570 kpc. The radio spectral index map shows steepening in the shock downstream region. Our analysis favours the scenario where the Diffusive Shock Acceleration (DSA) of particles is responsible for the origin of the radio relic in the presence of strong magnetic field. We have also estimated the magnetic field at the relic location assuming equipartition condition.
