MUSSES2020J: The Earliest Discovery of a Fast Blue Ultraluminous Transient at Redshift 1.063
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- 姜, 継安
- Kavli Institute for the Physics and Mathematics of the Universe (WPI), The University of Tokyo; Institutes for Advanced Study, The University of Tokyo; National Astronomical Observatory of Japan, National Institutes of Natural Sciences
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- 安田, 直樹
- Kavli Institute for the Physics and Mathematics of the Universe (WPI), The University of Tokyo; Institutes for Advanced Study, The University of Tokyo
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- 前田, 啓一
- Department of Astronomy, Kyoto University
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- 冨永, 望
- Kavli Institute for the Physics and Mathematics of the Universe (WPI), The University of Tokyo; Institutes for Advanced Study, The University of Tokyo; National Astronomical Observatory of Japan, National Institutes of Natural Sciences; Department of Physics, Faculty of Science and Engineering, Konan University; SOKENDAI (The Graduate University for Advanced Studies)
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- 土居, 守
- Kavli Institute for the Physics and Mathematics of the Universe (WPI), The University of Tokyo; Institutes for Advanced Study, The University of Tokyo; Institute of Astronomy, Graduate School of Science, The University of Tokyo; Research Center for the Early Universe, Graduate School of Science, The University of Tokyo
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- Ivezić, Željko
- Department of Astronomy, University of Washington
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- Yoachim, Peter
- Department of Astronomy, University of Washington
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- 宇野, 孔起
- Department of Astronomy, Kyoto University
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- 守屋, 尭
- National Astronomical Observatory of Japan, National Institutes of Natural Sciences; School of Physics and Astronomy, Faculty of Science, Monash University
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- Kumar, Brajesh
- Aryabhatta Research Institute of Observational Sciences
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- Pan, Yen-Chen
- Graduate Institute of Astronomy, National Central University
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- 田中, 賢幸
- National Astronomical Observatory of Japan, National Institutes of Natural Sciences
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- 田中, 雅臣
- Kavli Institute for the Physics and Mathematics of the Universe (WPI), The University of Tokyo; Institutes for Advanced Study, The University of Tokyo; Astronomical Institute, Tohoku University
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- 野本, 憲一
- Kavli Institute for the Physics and Mathematics of the Universe (WPI), The University of Tokyo; Institutes for Advanced Study, The University of Tokyo
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- Jha, Saurabh W.
- Department of Physics and Astronomy, Rutgers, The State University of New Jersey
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- Ruiz-Lapuente, Pilar
- Instituto de Física Fundamental, Consejo Superior de Investigaciones Científicas; Institut de Ciéncies del Cosmos (UB-IEEC)
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- Jones, David
- Instituto de Astrofísica de Canarias; Departamento de Astrofísica, Universidad de La Laguna
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- 茂山, 俊和
- RESCEU, Graduate School of Science, The University of Tokyo
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- 鈴木, 尚孝
- Kavli Institute for the Physics and Mathematics of the Universe (WPI), The University of Tokyo; Institutes for Advanced Study, The University of Tokyo; Lawrence Berkeley National Lab
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- 小久保, 充
- Department of Astrophysical Sciences, Princeton University
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- 古澤, 久徳
- National Astronomical Observatory of Japan, National Institutes of Natural Sciences
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- 宮崎, 聡
- National Astronomical Observatory of Japan, National Institutes of Natural Sciences; SOKENDAI (The Graduate University for Advanced Studies)
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- Connolly, Andrew J.
- Department of Astronomy, University of Washington
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- Sahu, D. K.
- Indian Institute of Astrophysics
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- Anupama, G. C.
- Indian Institute of Astrophysics
説明
In this Letter, we report the discovery of an ultraluminous fast-evolving transient in rest-frame UV wavelengths, MUSSES2020J, soon after its occurrence by using the Hyper Suprime-Cam (HSC) mounted on the 8.2 m Subaru telescope. The rise time of about 5 days with an extremely high UV peak luminosity shares similarities to a handful of fast blue optical transients whose peak luminosities are comparable with the most luminous supernovae while their timescales are significantly shorter (hereafter "fast blue ultraluminous transient, " FBUT). In addition, MUSSES2020J is located near the center of a normal low-mass galaxy at a redshift of 1.063, suggesting a possible connection between the energy source of MUSSES2020J and the central part of the host galaxy. Possible physical mechanisms powering this extreme transient such as a wind-driven tidal disruption event and an interaction between supernova and circumstellar material are qualitatively discussed based on the first multiband early-phase light curve of FBUTs, although whether the scenarios can quantitatively explain the early photometric behavior of MUSSES2020J requires systematical theoretical investigations. Thanks to the ultrahigh luminosity in UV and blue optical wavelengths of these extreme transients, a promising number of FBUTs from the local to the high-z universe can be discovered through deep wide-field optical surveys in the near future.
収録刊行物
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- The Astrophysical Journal Letters
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The Astrophysical Journal Letters 933 (2), L36-, 2022-07-10
American Astronomical Society
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詳細情報 詳細情報について
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- CRID
- 1050292782222939264
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- ISSN
- 20418213
- 20418205
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- HANDLE
- 10261/305380
- 2433/274920
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- 本文言語コード
- en
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- 資料種別
- journal article
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- データソース種別
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