利用 SPT-3G 探测银河系与河外毫米波暂现源
高能天体物理现象
2021-09-01 v2 宇宙学与河外天体物理
太阳与恒星天体物理
摘要
高角分辨率宇宙微波背景实验为开展毫米波段时间变源巡天提供了独特机遇，此类源族此前主要通过其他波段探测后的跟进观测得以认识。本文报道使用南极望远镜（SPT）搭载 SPT-3G 相机观测南天 1500 平方度所进行的天文暂现源巡天的首批结果。观测于 2020 年 3 月至 11 月在以 95、150 和 220 GHz 为中心的三个波段开展。该巡天探测到来自 SPT 此前未探测到源上的十五个暂现事件。其中大多数与不同类型的变星相关，使此类探测到的耀发数量增加两倍以上。恒星耀发无偏振且明亮，在某些情况下超过 1 Jy，持续时间从几分钟到数小时不等。另一类探测到的事件持续 2–3 周，似乎起源于河外。尽管其他波长的数据可用性有限，我们发现其中两次恒星耀发有同步光学活动的证据。来自 SPT-3G 及即将问世仪器的未来数据将在分钟到月的时标上提供毫米波暂现源的实时探测。
引用
@article{arxiv.2103.06166,
title = {Detection of Galactic and Extragalactic Millimeter-Wavelength Transient Sources with SPT-3G},
author = {S. Guns and A. Foster and C. Daley and A. Rahlin and N. Whitehorn and P. A. R. Ade and Z. Ahmed and E. Anderes and A. J. Anderson and M. Archipley and J. S. Avva and K. Aylor and L. Balkenhol and P. S. Barry and R. Basu Thakur and K. Benabed and A. N. Bender and B. A. Benson and F. Bianchini and L. E. Bleem and F. R. Bouchet and L. Bryant and K. Byrum and J. E. Carlstrom and F. W. Carter and T. W. Cecil and C. L. Chang and P. Chaubal and G. Chen and H. -M. Cho and T. -L. Chou and J. -F. Cliche and T. M. Crawford and A. Cukierman and T. de Haan and E. V. Denison and K. Dibert and J. Ding and M. A. Dobbs and D. Dutcher and W. Everett and C. Feng and K. R. Ferguson and J. Fu and S. Galli and A. E. Gambrel and R. W. Gardner and N. Goeckner-Wald and R. Gualtieri and N. Gupta and R. Guyser and N. W. Halverson and A. H. Harke-Hosemann and N. L. Harrington and J. W. Henning and G. C. Hilton and E. Hivon and G. P. Holder and W. L. Holzapfel and J. C. Hood and D. Howe and N. Huang and K. D. Irwin and O. B. Jeong and M. Jonas and A. Jones and T. S. Khaire and L. Knox and A. M. Kofman and M. Korman and D. L. Kubik and S. Kuhlmann and C. -L. Kuo and A. T. Lee and E. M. Leitch and A. E. Lowitz and C. Lu and D. P. Marrone and S. S. Meyer and D. Michalik and M. Millea and J. Montgomery and A. Nadolski and T. Natoli and H. Nguyen and G. I. Noble and V. Novosad and Y. Omori and S. Padin and Z. Pan and P. Paschos and J. Pearson and K. A. Phadke and C. M. Posada and K. Prabhu and W. Quan and C. L. Reichardt and D. Riebel and B. Riedel and M. Rouble and J. E. Ruhl and J. T. Sayre and E. Schiappucci and E. Shirokoff and G. Smecher and J. A. Sobrin and A. A. Stark and J. Stephen and K. T. Story and A. Suzuki and K. L. Thompson and B. Thorne and C. Tucker and C. Umilta and L. R. Vale and J. D. Vieira and G. Wang and W. L. K. Wu and V. Yefremenko and K. W. Yoon and M. R. Young and L. Zhang},
journal= {arXiv preprint arXiv:2103.06166},
year = {2021}
}
备注
14 pages, 9 figures; accepted to ApJ 5/27