AT2018cqh is a unique tidal disruption event (TDE) candidate discovered in a dwarf galaxy. Both the light curve fitting and galaxy scaling relationships suggest a central black hole mass in the range of 5.9<logM_BH/M_sun<6.4. A delayed X-ray brightening was found around 590 days after the optical discovery, but shows unusual long-time rising to peak over at least 558 days, which could be coming from delayed accretion of a newly forming debris disk. We report the discovery of delayed radio flares around 1105 days since its discovery, characterized by an initial steep rise of ~>175 days, a flattening lasting about 544 days, and a phase with another steep rise. The rapid rise in radio flux coupled with the slow decay in the X-ray emission points to a delayed launching of outflow, perhaps due to a transition in the accretion state. However, known accretion models can hardly explain the origins of the secondary radio flare that is rising even more rapidly in comparison with the initial one. If confirmed, AT2018cqh would be a rare TDE in a dwarf galaxy exhibiting optical, X-ray and radio flares. We call for continued multi-frequency radio observations to monitor its spectral and temporal evolution, which may help to reveal new physical processes that are not included in standard TDE models.
Interpreting the diversity of afterglow emission from radio-detected tidal disruption events with instantaneous and delayed outflows
Astronomical Institute, Graduate School of Science, Tohoku University（东北大学理学研究科天文学研究所）；University of Wisconsin, Madison（威斯康星大学麦迪逊分校）；Indian Institute of Technology Indore（印度理工学院印多尔分校）；University of Nevada, Las Vegas（内华达大学拉斯维加斯分校）；California Polytechnic State University（加州州立理工大学）；Naropa University（纳洛帕大学）；The Pennsylvania State University（宾夕法尼亚州立大学）；Kyoto University（京都大学）
Inefficient Circularization, Delayed Stream-Disk Interaction and Reprocessing: A Five-Stage Model for the Intermediate-Mass Black Hole Tidal Disruption Event EP240222a
University of Science and Technology of China（中国科学技术大学）；Steward Observatory, University of Arizona（亚利桑那大学斯图尔德天文台）；Sun Yat-sen University（中山大学）；National Astronomical Observatories, Chinese Academy of Sciences（中国科学院国家天文台）；University of Chinese Academy of Sciences（中国科学院大学）；The University of Hong Kong（香港大学）；University of Illinois at Urbana-Champaign（伊利诺伊大学厄巴纳-香槟分校）；Beijing Normal University（北京师范大学）
Delayed radio emission in tidal disruption events from collisions of outflows driven by disk instabilities
The Observatories of the Carnegie Institution for Science（卡内基科学研究所天文台）；Center for Interdisciplinary Exploration & Research in Astrophysics (CIERA), Physics & Astronomy, Northwestern University（西北大学天体物理交叉探索与研究中心）；Research Center for the Early Universe (RESCEU), School of Science, The University of Tokyo（东京大学理科系研究科早期宇宙研究中心）；Department of Physics and Astronomy, University of California, Davis（加州大学戴维斯分校物理与天文学系）
Simulations on the collision between debris stream and outer dusty torus: a possible channel for forming fast-rise and long-delayed radio outburst in tidal disruption events
Discovery of crested quasi-periodic eruptions following the most luminous SRG/eROSITA tidal disruption event
Max-Planck-Institut für extraterrestrische Physik（马克斯·普朗克地外物理研究所）；Excellence Cluster ORIGINS（ORIGINS 卓越集群）；School of Physics and Astronomy, Tel Aviv University（特拉维夫大学物理与天文学学院）；Kavli Institute for Astrophysics and Space Research, Massachusetts Institute of Technology（麻省理工学院卡弗里天体物理学与空间研究研究所）；Centro de Astrobiologia (CAB), CSIC-INTA（CSIC-INTA 天体生物学中心）；European Southern Observatory（欧洲南方天文台）
Repeating flares, X-ray outbursts and delayed infrared emission: A comprehensive compilation of optical tidal disruption events
Institute of Astrophysics, FORTH（FORTH天体物理研究所）；Department of Physics, University of Crete（克里特大学物理系）；NASA Marshall Space Flight Center（美国宇航局马歇尔太空飞行中心）；Institutt for Fysikk, Norwegian University of Science and Technology（挪威科技大学物理系）；Instituto de Astronomía, Universidad Nacional Autónoma de México Campus Ensenada（墨西哥国立自治大学恩塞纳达天文研究所）；Kavli Institute for Particle Astrophysics and Cosmology, Stanford University（斯坦福大学卡弗里粒子天体物理与宇宙学研究所）；Astronomical Observatory, University of Warsaw（华沙大学天文台）；Astrophysics Division, National Centre for Nuclear Research（国家核研究中心天体物理部）；Astronomical Institute, University of Wrocław（弗罗茨瓦夫大学天文研究所）
Early Identification of Optical Tidal Disruption Events: A science module for the Fink broker
IRAP, Université de Toulouse, CNRS, CNES, UPS（图卢兹大学 IRAP）；Institute of Physics of the Czech Academy of Sciences（捷克科学院物理研究所）；The Oskar Klein Centre, Department of Astronomy, Stockholm University（斯德哥尔摩大学奥谢·克莱因中心天文学系）；European Space Agency (ESA), European Space Astronomy Centre (ESAC)（欧洲空间局欧洲空间天文中心）；Université Clermont Auvergne, CNRS, LPCA（克莱蒙奥弗涅大学 LPCA）；Université Paris-Saclay, CNRS/IN2P3, IJCLab（巴黎萨克雷大学 IJCLab）；Lomonosov Moscow State University, Sternberg Astronomical Institute（莫斯科罗蒙诺索夫国立大学斯滕伯格天文研究所）；Centre for Astrophysics and Supercomputing, Swinburne University of Technology（斯威本科技大学天体物理学与超级计算中心）
The Multi-Wavelength Context of Delayed Radio Emission in TDEs: Evidence for Accretion-Driven Outflows
University of Arizona（亚利桑那大学）；University of California, Berkeley（加州大学伯克利分校）；Center for Astrophysics | Harvard & Smithsonian（哈佛与史密森尼天体物理中心）；Northwestern University（西北大学）；University of Utah（犹他大学）；Radboud University（拉德堡德大学）；University of Oregon（俄勒冈大学）
Triple radio flares from tidal disruption events: jet-wind collisions and the discovery of a third radio flare from AT2020vwl
School of Natural Sciences, Institute for Advanced Study（普林斯顿高等研究院自然科学学院）；International Centre for Radio Astronomy Research – Curtin University（西澳大学国际射电天文研究中心）；Department of Astronomy/Steward Observatory（天文学系/斯图尔德天文台）
Hydrodynamic Simulations of Tidal Disruption Encores
Stony Brook University（石溪大学）；University of Colorado（科罗拉多大学）；National Institute of Standards and Technology（美国国家标准与技术研究院）；The Max Planck Institute for Astrophysics（马克斯·普朗克天体物理学研究所）
