Tidal disruption events (TDEs) occur when a star is destroyed by a supermassive black hole at the center of a galaxy, temporarily increasing the accretion rate onto the black hole and producing a bright flare across the electromagnetic spectrum. Radio observations of TDEs trace outflows and jets that may be produced. Radio detections of the outflows from TDEs are uncommon, with only about one third of TDEs discovered to date having published radio detections. Here we present over two years of comprehensive, multi-radio frequency monitoring observations of the tidal disruption event AT2019azh taken with the Very Large Array (VLA) and MeerKAT radio telescopes from approximately 10 days pre-optical peak to 810 days post-optical peak. AT2019azh shows unusual radio emission for a thermal TDE, as it brightened very slowly over two years, and showed fluctuations in the synchrotron energy index of the optically thin synchrotron emission from 450 days post-disruption. Based on the radio properties, we deduce that the outflow in this event is likely non-relativistic and could be explained by a spherical outflow arising from self-stream intersections, or a mildly collimated outflow from accretion onto the supermassive black hole. This data-set provides a significant contribution to the observational database of outflows from TDEs, including the earliest radio detection of a non-relativistic TDE to date, relative to the optical discovery.
Numerical Simulations of the Circularized Accretion Flow in Population III Star Tidal Disruption Events. II. Radiative Properties
Shanghai Astronomical Observatory, Chinese Academy of Sciences（中国科学院上海天文台）；University of Chinese Academy of Sciences（中国科学院大学）；Shanghai Normal University（上海师范大学）；State Key Laboratory of Particle Astrophysics, Institute of High Energy Physics, Chinese Academy of Sciences（中国科学院高能物理研究所粒子天体物理国家重点实验室）；Chongqing University（重庆大学）
Ultra-long MeV transient from a relativistic jet: a tidal disruption event candidate
Gran Sasso Science Institute（大萨索科学研究所）；INFN - Laboratori Nazionali del Gran Sasso（意大利国家核物理研究所-大萨索国家实验室）；Dublin Institute for Advanced Studies（都柏林高等研究院）；Yerevan State University（埃里温国立大学）；Indian Institute of Technology Indore（印度技术学院印多尔分校）；The Pennsylvania State University（宾夕法尼亚州立大学）
Spoon-Feeding Giant Stars to Supermassive Black Holes: Episodic Mass Transfer from Evolving Stars and Their Contribution to the Quiescent Activity of Galactic Nuclei
The Most Energetic Transients: Tidal Disruptions of High-Mass Stars
Institute for Astronomy, University of Hawai‘i（夏威夷大学天体物理研究所）；School of Physics, The University of Melbourne（墨尔本大学物理学院）；Department of Astronomy and Astrophysics, University of California, Santa Cruz（加州大学圣克鲁兹分校天文与天体物理系）；Department of Astronomy, The Ohio State University（俄亥俄州立大学天文系）；Center for Cosmology and Astroparticle Physics, The Ohio State University（俄亥俄州立大学宇宙学与高能粒子物理中心）；The Observatories of the Carnegie Institution for Science（卡内基科学机构天文台）；Department of Physics and Astronomy, Purdue University（普渡大学物理与天文系）；Center for Data Intensive and Time Domain Astronomy, Department of Physics and Astronomy, Michigan State University（密歇根州立大学物理与天文系数据密集与时域天文中心）；Department of Physics, Virginia Tech（弗吉尼亚理工大学物理系）；Space Telescope Science Institute（太空望远镜科学研究所）
Bridging Roche Lobe Overflow and micro-TDEs: The Runaway Evolution of Eccentric Mass Transfer in Star-Black Hole Binaries
Tsung-Dao Lee Institute, Shanghai Jiao-Tong University（上海交大李政道研究所）；Department of Physics, College of Sciences, Shanghai University（上海大学理学院）；Department of Astronomy, Center for Astrophysics and Planetary Science, Cornell University（康奈尔大学天文学系天体物理学与行星科学中心）
AT2022zod: An Unusual Tidal Disruption Event in an Elliptical Galaxy at Redshift 0.11
International Centre for Radio Astronomy Research—Curtin University（国际射电天文中心——科廷大学）；Artificial Intelligence for Physics Laboratory (Lab-IA)（物理人工智能实验室）；Centre for Astrophysics Research, University of Hertfordshire（赫特福德大学天体物理学研究中心）；School of Physics, The University of Sydney（悉尼大学物理学院）；ARC Centre of Excellence for Dark Matter Particle Physics（ARC暗物质粒子物理卓越中心）；HUN-REN Research Centre for Astronomy and Earth Sciences, Konkoly Observatory（匈牙利研究与教育网络天文学与地球科学研究中心孔科利天文台）；University of Granada（格拉纳达大学）；Donald Bren School of Information and Computer Sciences, University of California, Irvine（加州大学尔湾分校唐纳德布伦信息与计算机科学学院）；Lab for Computing and Applied Mathematics, COPDT-INPE-MCTI（计算与应用数学实验室）；Department of Physics, University of Nevada, Reno（内华达大学里诺分校物理系）；Nevada Center for Astrophysics, University of Nevada, Las Vegas（内华达大学拉斯维加斯分校内华达天体物理学中心）；Department of Astronomy, University of Michigan（密歇根大学天文学系）；Department of Astrophysics and Planetary Science, Villanova University（维拉诺瓦大学天体物理学与行星科学系）
ASKAP J005512.2-255834: A Luminous, Long-Lived Radio Transient at z = 0.1 -- an Orphan Afterglow or an off-nuclear TDE from an IMBH?
Sydney Institute for Astronomy, School of Physics, The University of Sydney（悉尼大学物理学院天体物理学研究所）；ARC Centre of Excellence for Gravitational Wave Discovery (OzGrav)（引力波发现卓越研究中心）；Australia Telescope National Facility, CSIRO, Space and Astronomy（CSIRO空间与天文国家望远镜设施）；Department of Physics, University of Wisconsin-Milwaukee（威斯康星大学密尔沃基分校物理系）
A fast powerful X-ray transient from possible tidal disruption of a white dwarf
National Astronomical Observatories, Chinese Academy of Sciences（中国科学院国家天文台）；Institute for Astrophysics, School of Physics, Zhengzhou University（郑州大学物理学院天体物理研究所）；The Hong Kong Institute for Astronomy and Astrophysics, The University of Hong Kong（香港大学天体物理研究所）；Department of Physics, The University of Hong Kong（香港大学物理系）；Shenzhen Institute of Research and Innovation, The University of Hong Kong, Shenzhen（香港大学深圳研究院）；School of Astronomy and Space Science, University of Chinese Academy of Sciences（中国科学院大学天文与空间科学学院）
Black Hole Survival Guide: Searching for Stars in the Galactic Center That Endure Partial Tidal Disruption
University of California, Santa Cruz（加州大学圣克鲁兹分校）；Cabrillo College（卡布里洛学院）；Wesleyan University（卫斯理安大学）；Northwestern University（西北大学）；University of North Carolina at Chapel Hill（北卡罗来纳大学教堂山分校）
A milli-Tidal Disruption Event Model for GRB$\;$250702B: Main Sequence Star Disrupted by an IMBH
The Open University of Israel（以色列开放大学）；The George Washington University（乔治华盛顿大学）；Technion - Israel Institute of Technology（以色列理工学院）；Universidad Nacional Autónoma de México（墨西哥国立自治大学）
GRB 250702B的毫 tidal 破坏事件模型表明，主序星被中间质量黑洞破坏可解释其持续时间和能量特征。
A tidal disruption event in a quasar at redshift 7.19
University of Toronto（多伦多大学）；Dunlap Institute for Astronomy and Astrophysics, University of Toronto（多伦多大学邓普天文学与天体物理研究所）；Cosmic Dawn Center (DAWN)（宇宙黎明中心）；Niels Bohr Institute, University of Copenhagen（哥本哈根大学尼尔斯·玻尔研究所）；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）；Department of Astronomy, School of Physics, Peking University（北京大学物理学院天文学系）；The University of Texas at Austin（德克萨斯大学奥斯汀分校）；Max-Planck-Institut für extraterrestrische Physik（马克斯·普朗克地外物理学研究所）
AT 2024wpp: the most luminous fast-evolving optical transient linked to the merger explosion of a black-hole binary
University of Science and Technology of China（中国科学技术大学）；Instituto de Astrofisica de Canarias（加那利天体物理学研究所）；Universidad de La Laguna（拉古纳大学）；Xiamen University（厦门大学）；INAF – Osservatorio Astronomico di Padova（意大利国家天文台帕多瓦天文台）；Institute of Space Sciences (ICE, CSIC)（空间科学研究所（西班牙高等科学研究委员会））；Tsinghua University（清华大学）；Nanchang University（南昌大学）；Institute of High Energy Physics, Chinese Academy of Sciences（中国科学院高能物理研究所）
AT 2024wpp是首个被证实与黑洞双星并合爆炸相关的最明亮快速演化光学瞬变体，其X射线和光学亮度特征支持潮汐破坏事件理论。
