The rate of extreme coronal line emitting galaxies in the Sloan Digital Sky Survey and their relation to tidal disruption events
Joseph Callow, Or Graur, Peter Clark, Antonella Palmese, Jessica Aguilar, Steven Ahlen, Segev BenZvi, David Brooks, Todd Claybaugh, Axel de la Macorra, Peter Do… 展开作者
Joseph Callow, Or Graur, Peter Clark, Antonella Palmese, Jessica Aguilar, Steven Ahlen, Segev BenZvi, David Brooks, Todd Claybaugh, Axel de la Macorra, Peter Doel, Jaime E. Forero-Romero, Enrique Gaztañaga, Satya Gontcho A Gontcho, Andrew Lambert, Martin Landriau, Marc Manera, Aaron Meisner, Ramon Miquel, John Moustakas, Jundan Nie, Claire Poppett, Francisco Prada, Mehdi Rezaie, Graziano Rossi, Eusebio Sanchez, Joseph H. Silber, Gregory Tarlé, Benjamin A. Weaver, Zhimin Zhou
High-ionization iron coronal lines (CLs) are a rare phenomenon observed in galaxy and quasi-stellar object spectra that are thought to be created by high-energy emission from active galactic nuclei and certain types of transients. In cases known as extreme coronal line emitting galaxies (ECLEs), these CLs are strong and fade away on a timescale of years. The most likely progenitors of these variable CLs are tidal disruption events (TDEs), which produce sufficient high-energy emission to create and sustain the CLs over these timescales. To test the possible connection between ECLEs and TDEs, we present the most complete variable ECLE rate calculation to date and compare the results to TDE rates from the literature. To achieve this, we search for ECLEs in the Sloan Digital Sky Survey (SDSS). We detect sufficiently strong CLs in 16 galaxies, more than doubling the number previously found in SDSS. We find that none of the nine new ECLEs evolve in a manner consistent with that of the five previously discovered variable ECLEs. Using this sample of five variable ECLEs, we calculate the galaxy-normalized rate of variable ECLEs in SDSS to be $R_\mathrm{G}=3.6~^{+2.6}_{-1.8}~(\mathrm{statistical})~^{+5.1}_{-0.0} (\mathrm{systematic})\times10^{-6}~\mathrm{galaxy}^{-1}~\mathrm{yr}^{-1}$. The mass-normalised rate is $R_\mathrm{M}=3.1~^{+2.3}_{-1.5}~(\mathrm{statistical})~^{+4.4}_{-0.0}~(\mathrm{systematic})\times10^{-17}~\mathrm{M_\odot^{-1}}~\mathrm{yr}^{-1}$ and the volumetric rate is $R_\mathrm{V}=7~^{+20}_{-5}~(\mathrm{statistical})~^{+10}_{-0.0}~(\mathrm{systematic})\times10^{-9}~\mathrm{Mpc}^{-3}~\mathrm{yr}^{-1}$. Our rates are one to two orders of magnitude lower than TDE rates from the literature, which suggests that only 10 to 40 per cent of all TDEs produce variable ECLEs. Additional uncertainties in the rates arising from the structure of the interstellar medium have yet to be included.
Discovery of Quasi-periodic Eruptions in the Tidal Disruption Event and Extreme Coronal Line Emitter AT2022upj: implications for the QPE/TDE fraction and a connection to ECLEs
NTT, Spitzer and Chandra spectroscopy of SDSSJ095209.56+214313.3: the most luminous coronal-line supernova ever observed, or a stellar tidal disruption event ?
Temporal Variation of the Coronal Radius Parameter in a Jetted Tidal Disruption Event: Swift J1644+57
University of Manitoba（曼尼托巴大学）；Chungbuk National University（忠北国立大学）；Aoyama Gakuin University（青山学院大学）；Physical Research Laboratory（物理研究实验室）；Indian Centre for Space Physics（印度空间物理中心）；Indian Institute of Astrophysics（印度天体物理研究所）；INAF-IASF Palermo（意大利国家天体物理研究所巴勒莫天体物理研究所）；University of British Columbia（不列颠哥伦比亚大学）；SRM University-AP（SRM大学安得拉邦校区）
AT 2018dyk: tidal disruption event or active galactic nucleus? Follow-up observations of an extreme coronal line emitter with the Dark Energy Spectroscopic Instrument
通过暗能量光谱仪后续观测和宿主星系分析，确认 AT 2018dyk 是发生在富气体环境中的潮汐瓦解事件，并发现此类 TDE 的中红外特性与局部环境物质含量及密度相关。
VLASS tidal disruption events with optical flares II: discovery of two TDEs with intermediate width Balmer emission lines and connections to the ambiguous extreme coronal line emitters
Merger Driven or Internal Evolution? A New Morphological Study of Tidal Disruption Event Host Galaxies
The University of Hong Kong（香港大学）；The Hong Kong Institute for Astronomy and Astrophysics, The University of Hong Kong（香港大学天文及天体物理研究所）；International Centre for Radio Astronomy Research, University of Western Australia（西澳大利亚大学国际射电天文研究中心）；Tata Institute of Fundamental Research（塔塔基础研究所）；Tsinghua University（清华大学）；The Chinese University of Hong Kong（香港中文大学）；CUHK Shenzhen Research Institute（香港中文大学（深圳）研究院）；University of Victoria（维多利亚大学）；University of Nottingham（诺丁汉大学）；University of Hawaii（夏威夷大学）
Rapid onset of a Comptonisation zone in the repeating tidal disruption event XMMSL2 J140446.9-251135
Telespazio UK for ESA（ESA英国泰莱斯帕齐奥）；Schmidt Sciences（施密特科学）；Space Telescope Science Institute（太空望远镜科学研究所）；Leiden Observatory, Leiden University（莱顿大学莱顿天文台）；University of Arizona（亚利桑那大学）；Max-Planck-Institut für extraterrestrische Physik（马普地外物理研究所）；University of Hertfordshire（赫特福德大学）；University of Oxford（牛津大学）；Centro de Astrobiología (CAB), CSIC-INTA（CSIC-INTA天体生物学中心）；ESA（欧洲空间局）；SERCO for ESA（ESA塞科服务）
eROSITA-RU Tidal Disruption Events with Keck-I/LRIS: Sample Selection, Optical Properties, and Host Galaxy Demographics
University of California, Berkeley（加州大学伯克利分校）；Sichuan University（四川大学）；Miller Institute for Basic Research in Science（米勒基础科学研究学院）；Berkeley Center for Multi-messenger Research on Astrophysical Transients and Outreach (Multi-RAPTOR)（伯克利多信使天体物理瞬变现象研究与外展中心（Multi-RAPTOR））；Space Research Institute (IKI), Russian Academy of Sciences（俄罗斯科学院空间研究所）；Max-Planck-Institut für Astrophysik（马克斯·普朗克天体物理学研究所）
The Radio Properties of Extreme Coronal Line Emitters: Constraints on the Sub-parsec Environment
University of Arizona（亚利桑那大学）；University of Utah（犹他大学）；Max-Planck-Institut für Radioastronomie（马克斯·普朗克射电天文研究所）；University of California, Berkeley（加利福尼亚大学伯克利分校）；Stanford University（斯坦福大学）
Early results in the search for extreme coronal line emitters with the Dark Energy Spectroscopic Instrument
University of Southampton（南安普顿大学）；Institute of Cosmology and Gravitation, University of Portsmouth（朴茨茅斯宇宙学与引力研究所）；American Museum of Natural History（美国自然历史博物馆）；University of California, Berkeley（加州大学伯克利分校）；Lawrence Berkeley National Laboratory（劳伦斯伯克利国家实验室）；Boston University（波士顿大学）；University of Rochester（罗切斯特大学）
ATLAS22kjn (AT 2022fpx): A Coronal Line Emitter with an Early Light Curve Bump and Mid-Infrared Dust Echo
University of Illinois（伊利诺伊大学）；Institute for Astronomy, University of Hawai‘i（夏威夷大学天文研究所）；School of Physics, University of Melbourne（墨尔本大学物理学院）；The Ohio State University（俄亥俄州立大学）；Texas Tech University（德克萨斯理工大学）；Peking University（北京大学）；National Astronomical Observatories, Chinese Academy of Science（中国科学院国家天文台）
UGC 2369S: a Kpc Scale Triple Merger Candidate Identified in a Nearby Luminous Infrared Galaxy
California Institute of Technology（加州理工学院）；Eureka Scientific（尤里卡科学）；University of California, Berkeley（加利福尼亚大学伯克利分校）；Max-Planck-Institut für extraterrestrische Physik（马克斯·普朗克地外物理研究所）；Kavli Institute for Astronomy and Astrophysics, Peking University（北京大学科维理天文与天体物理研究所）
Back from the dead: AT2019aalc as a candidate repeating TDE in an AGN
Ruhr Astroparticle and Plasma Physics Center (RAPP Center)（鲁尔天体物理与等离子体物理中心）；Leiden Observatory, Leiden University（莱顿天文台，莱顿大学）；Deutsches Elektronen-Synchrotron (DESY)（德国电子同步辐射中心）；Institut fur Physik, Humboldt-Universität zu Berlin（柏林洪堡大学物理研究所）；Division of Physics, Mathematics, and Astronomy, California Institute of Technology（加州理工学院物理、数学和天文学系）；University of Maryland, Department of Astronomy（马里兰大学天文学系）；NASA Goddard Space Flight Center, Astrophysics Science Division（美国宇航局戈达德太空飞行中心天体物理学科学部）；Center for Research and Exploration in Space Science and Technology, NASA/GSFC（NASA/GSFC空间科学与技术研究探索中心）
Radio and X-ray flux rebrightening six years after outburst in a partially-obscured extreme changing-look AGN
Anhui Normal University（安徽师范大学）；University of Science and Technology of China（中国科学技术大学）；Nanjing Normal University（南京师范大学）；National Astronomical Observatories, Chinese Academy of Sciences（中国科学院国家天文台）
