论文标题
关于奇数无线电循环的能量和祖细胞：与恒星潮汐破坏的因果关系？
On energetics and progenitors of Odd Radio Circles: A causal connection with tidal disruption of stars?
论文作者
论文摘要
奇数无线电圆或兽人最近发现了边缘烈性，低表面亮度圆形无线电源。目前正在争论其起源的祖细胞和天体物理过程。有些兽人无宿主，有些兽人似乎托管在遥远的静态星系中。两种合理的解释将ORC视为附近的超新星残留物，在局部星系的内部培养基中有几百个parsec，或者在遥远星系周围的几百kpc范围内震惊的光晕。创建数百kpc大小所需的输入冲击能量在$ 10^{55} -10^{59} $ erg的范围内。这里显示的是，从多个（$ 10^{5} -10^{9} $）弹出未结合碎屑中的累积能量，$ \ sim100 $ MYR周围围绕中央大型黑洞的潮汐破坏事件可以满足所需的能量，以使某些星系周围产生ORC，这些产品最近在某些人的身上生成了一个属于Merge的人。兽人的潜在宿主在这里被确定为具有巨大黑洞的中间红移的盛大后星系。在静态星系周围的兽人与潮汐破坏之间的因果关系可能会在恒星后星系中观察到的潮汐破坏事件的主导性中得到支持。
Odd Radio Circles or ORCs are recently discovered edge-brightened, low surface brightness circular radio sources. The progenitors and astrophysical processes responsible for their origins are presently debated. Some ORCs are host-less and some appear to be hosted in distant quiescent galaxies. Two plausible explanations consider ORCs as nearby supernova remnants with sizes a few hundred parsec in the intragroup medium of the local group of galaxies or alternatively shocked halos of a few hundred kpc extent around distant galaxies. The input shock energy required to create ORCs of a few hundred kpc size is estimated in a range of $10^{55} - 10^{59}$ erg. It is shown here that the cumulative energy in unbound debris ejected from multiple ($10^{5} - 10^{9}$) tidal disruption events over $\sim100$ Myr period around a central massive black hole can meet the required energies to generate ORCs around some galaxies, which have recently undergone a merger. The potential hosts for ORCs are identified here as abundant post-starburst galaxies at intermediate redshifts having massive black holes. A causal connection between ORC around quiescent galaxies and tidal disruption may find support in the observed dominance of tidal disruption events in post-starburst galaxies.
