AT2024wpp：由黑洞吸积驱动的极致光亮快 Ultraviolet 短暂现象
摘要
我们报告了 AT 2024wpp（“Whippet”）的发现，这是一种快速且光亮的 18cow 类短暂现象。位于 z=0.0868 的天体通过 Keck Cosmic Web Imager 光谱仪对其微弱的星形成宿主进行鉴定，成为目前该类天体第四近的例子。快速识别源头在 Zwicky 瞬态设施数据流中，使得在峰值前获得了从紫外到可见光的观测，首次确定了该 18cow 类对象的峰值全辐射功率（2×10^45 erg/s）、最大光谱半径（10^15 cm）以及总辐射能量（10^51 erg）。我们 presenting 来自综合多波段观测计划的结果，包括来自 Hubble Space Telescope 上 Cosmic Origins Spectrograph 的远紫外光谱，以及来自 Very Large Telescope、Hubble Space Telescope、Very Large Array 和 Atacama Large Millimetre Array 的深度成像，覆盖爆炸后 100 天以上。我们在其中一种模型中解释观测结果：一个快速吸积的中心引擎向周围介质喷出约 0.2c 的高速风，并以 X 射线方式照射它。这种风中的高多普勒速度和强离子化程度防止了在 ejecta 或周围 circumstellar 物质中出现可识别的光谱特征。35 天后，H 和 He 特征以双峰窄线形式出现在光谱中。每个峰值 individually narrow（全宽约 3000 km/s），但两个分量之间相隔约 6600 km/s，表明较密集物质的稳定结构，可能代表潮汐 ejecta 的流动或被剥离的伴星。
引用
@article{arxiv.2601.03337,
title = {AT2024wpp: An Extremely Luminous Fast Ultraviolet Transient Powered by Accretion onto a Black Hole},
author = {Daniel A. Perley and Anna Y. Q. Ho and Zoë McGrath and Michael Camilo and Cassie Sevilla and Ping Chen and Genevieve Schroeder and Taya Govreen-Segal and Aleksandra Bochenek and Yu-Jing Qin and James H. Gillanders and Benjamin Amend and Joseph P. Anderson and Igor Andreoni and Amar Aryan and Eric C. Bellm and Joshua S. Bloom and Thomas de Boer and Jonathan Carney and Ilaria Caiazzo and Ken C. Chambers and Panos Charalampopoulos and Ting-Wan Chen and Tracy X. Chen and Eric R. Coughlin and Michael Coughlin and Michel Dennefeld and Georgios Dimitriadis and Christoffer Fremling and Danielle Frostig and Avishay Gal-Yam and Lluís Galbany and Anjashay Gangopadhyay and Melzie Ghendrih and Matthew J. Graham and Mariusz Gromadzki and Steven L. Groom and Claudia P. Gutiérrez and K. -Ryan Hinds and Mark E. Huber and Cosimo Inserra and Benjamin C. Kaiser and Mansi M. Kasliwal and Niilo E. Koivisto and Chien-Cheng Lin and Chang Liu and Thomas B. Lowe and Eugene Magnier and Ashish A. Mahabal and Andrew Milligan and Paloma Minguez and Geoffrey Mo and Tomás E. Müller-Bravo and Matt Nicholl and Priscila J. Pessi and Giuliano Pignata and Josiah Purdum and Nabeel Rehemtulla and R. Michael Rich and Anwesha Sahu and Avinash Singh and Stephen J. Smartt and Jesper Sollerman and Gokul Srinivasaragavan and Shubham Srivastav and Robert D. Stein and Steve Schulze and Jack W. Tweddle and Richard Wainscoat and Jacob L. Wise and Lin Yan and David R. Young},
journal= {arXiv preprint arXiv:2601.03337},
year = {2026}
}
备注
Accepted to MNRAS. Machine-readable radio and optical photometry tables included as ancillary files