MRC 0116+111中弥漫的气泡状射电晕发射:遥远星系团中AGN反馈的印记
Diffuse bubble-like radio-halo emission in MRC 0116+111: Imprint of AGN feedback in a distant cluster of galaxies
摘要:
我们报道了在一个红移z = 0.131的遥远星系团的中心发现了一个发光的,尺寸约为240千秒差距的迷你射电晕。我们的光学和多波长GMRT和VLA观测揭示了一个非常不寻常的结构,显示了一个双泡状的漫射射电晕围绕着一个明亮的椭圆星系团,非常相似的大尺度射电结构的M87,在室女星系团的主导星系。它提供了一个很好的机会,了解这种无线电喷流膨胀等离子体泡在热集群大气中的能量和动力学演化。
英文摘要:
We report the discovery of a luminous, mini radio halo of ~240 kpc dimension at the center of a distant cluster of galaxies at redshift z = 0.131. Our optical and multi-wavelength GMRT and VLA observations reveal a highly unusual structure showing a twin bubble-like diffuse radio halo surrounding a cluster of bright elliptical galaxies; very similar to the large-scale radio structure of M87, the dominant galaxy in Virgo cluster. It presents an excellent opportunity to understand the energetics and the dynamical evolution of such radio jet inflated plasma bubbles in the hot cluster atmosphere.
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