arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2001.00877astro-ph.GA
收藏

BAT AGN光谱测量--超硬X射线选XV高频射电岩心

BAT AGN Spectroscopic Survey -- XV: The High Frequency Radio Cores of Ultra-hard X-ray Selected AGN

Krista Lynne Smith, Richard F. Mushotzky, Michael Koss, Benny Trakhtenbrot, Claudio Ricci, O. Ivy Wong, Franz E. Bauer, Federica Ricci, Stuart Vogel, Daniel Ste… 展开作者

Krista Lynne Smith, Richard F. Mushotzky, Michael Koss, Benny Trakhtenbrot, Claudio Ricci, O. Ivy Wong, Franz E. Bauer, Federica Ricci, Stuart Vogel, Daniel Stern, Meredith C. Powell, C. Meg Urry, Fiona Harrison, Julian Mejia-Restrepo, Kyuseok Oh, Junhyun Baek, Aeree Chung

摘要:

我们对Swift-BAT在14-195 keV能量下选取的100个低红移活动星系核进行了1”分辨率的22 GHz射电成像。我们发现无线电核心探测率为96%,远高于低频无线电调查。在96个放射性探测到的活动星系核中,55个具有紧凑的形态,30个具有与核恒星形成一致的形态,11个具有sub-kpc到kpc尺度的喷流。我们发现,总的无线电功率不区分核恒星的形成和喷流的无线电发射的起源。对于87个天体,我们使用光谱学来检验活动星系核的物理参数是否在射电形态类型之间存在差异。我们发现,X射线光度往往是较高的,如果22 GHz的形态是射流,但没有发现在其他物理参数的显着差异。我们发现X射线和核心射电光度之间的关系与日冕活动星的$L_R/L_X \sim 10^{-5}$一致。我们进一步发现,典型的基本平面的黑洞活动系统过度预测我们的无线电光度,特别是对恒星形成形态的对象。

英文摘要:

We have conducted 22 GHz radio imaging at 1" resolution of 100 low-redshift AGN selected at 14-195 keV by the Swift-BAT. We find a radio core detection fraction of 96%, much higher than lower-frequency radio surveys. Of the 96 radio-detected AGN, 55 have compact morphologies, 30 have morphologies consistent with nuclear star formation, and 11 have sub-kpc to kpc-scale jets. We find that the total radio power does not distinguish between nuclear star formation and jets as the origin of the radio emission. For 87 objects, we use optical spectroscopy to test whether AGN physical parameters are distinct between radio morphological types. We find that X-ray luminosities tend to be higher if the 22 GHz morphology is jet-like, but find no significant difference in other physical parameters. We find that the relationship between the X-ray and core radio luminosities is consistent with the $L_R/L_X \sim 10^{-5}$ of coronally active stars. We further find that the canonical fundamental planes of black hole activity systematically over-predict our radio luminosities, particularly for objects with star formation morphologies.

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。

↑