具有超新星光度的分钟级光学耀发
高能天体物理现象
2023-11-20 v1
摘要
近年来，某些发光河外光学瞬变源被观测到仅持续数天。其观测到的短持续时间意味着与最常见、时间尺度为数周的河外发光瞬变源（超新星）不同的供能机制。一些短持续时间瞬变源，最著名的是 AT2018cow，显示出偏蓝的光学颜色以及明亮的射电与 X 射线辐射。若干 AT2018cow 类瞬变源已显示出长寿命内嵌能源的线索，例如 X 射线变率、延长的紫外辐射、暂定的 X 射线准周期振荡，以及与快速（但亚相对论性）射电辐射抛射物耦合的大能量。在此我们报告在 AT2018cow 类瞬变源 AT2022tsd（“塔斯马尼亚恶魔”）余辉中观测到的分钟级光学耀发。这些耀发发生在数月时间内，具有极高能量且可能为非热辐射，意味着它们源自近相对论性外流或喷流。我们的观测确认，在某些 AT2018cow 类瞬变源中，内嵌能源是一致密天体，要么是磁星，要么是吸积黑洞。
引用
@article{arxiv.2311.10195,
title = {Minutes-duration Optical Flares with Supernova Luminosities},
author = {Anna Y. Q. Ho and Daniel A. Perley and Ping Chen and Steve Schulze and Vik Dhillon and Harsh Kumar and Aswin Suresh and Vishwajeet Swain and Michael Bremer and Stephen J. Smartt and Joseph P. Anderson and G. C. Anupama and Supachai Awiphan and Sudhanshu Barway and Eric C. Bellm and Sagi Ben-Ami and Varun Bhalerao and Thomas de Boer and Thomas G. Brink and Rick Burruss and Poonam Chandra and Ting-Wan Chen and Wen-Ping Chen and Jeff Cooke and Michael W. Coughlin and Kaustav K. Das and Andrew J. Drake and Alexei V. Filippenko and James Freeburn and Christoffer Fremling and Michael D. Fulton and Avishay Gal-Yam and Lluís Galbany and Hua Gao and Matthew J. Graham and Mariusz Gromadzki and Claudia P. Gutiérrez and K-Ryan Hinds and Cosimo Inserra and Nayana A. J. and Viraj Karambelkar and Mansi M. Kasliwal and Shri Kulkarni and Tomás E. Müller-Bravo and Eugene A. Magnier and Ashish A. Mahabal and Thomas Moore and Chow-Choong Ngeow and Matt Nicholl and Eran O. Ofek and Conor M. B. Omand and Francesca Onori and Yen-Chen Pan and Priscila J. Pessi and Glen Petitpas and David Polishook and Saran Poshyachinda and Miika Pursiainen and Reed Riddle and Antonio C. Rodriguez and Ben Rusholme and Enrico Segre and Yashvi Sharma and Ken W. Smith and Jesper Sollerman and Shubham Srivastav and Nora Linn Strotjohann and Mark Suhr and Dmitry Svinkin and Yanan Wang and Philip Wiseman and Avery Wold and Sheng Yang and Yi Yang and Yuhan Yao and David R. Young and WeiKang Zheng},
journal= {arXiv preprint arXiv:2311.10195},
year = {2023}
}
备注
79 pages, 3 figures (main text) + 7 figures (extended data) + 2 figures (supplementary information). Published online in Nature on 15 November 2023