Insight-HXMT Observations of a Possible Fast Transition from the Jet- to Wind-dominated State during a Huge Flare of GRS 1915+105

Kong, L. D. and Zhang, S. and Chen, Y. P. and Zhang, S. N. and Ji, L. and Wang, P. J. and Tao, L. and Ge, M. Y. and Liu, C. Z. and Song, L. M. and Lu, F. J. and Qu, J. L. and Li, T. P. and Xu, Y. P. and Cao, X. L. and Chen, Y. and Bu, Q. C. and Cai, C. and Chang, Z. and Chen, G. and Chen, L. and Chen, T. X. and Cui, W. W. and Du, Y. Y. and Gao, G. H. and Gao, H. and Gao, M. and Gu, Y. D. and Guan, J. and Guo, C. C. and Han, D. W. and Huang, Y. and Huo, J. and Jia, S. M. and Jiang, W. C. and Jin, J. and Li, B. and Li, C. K. and Li, G. and Li, W. and Li, X. and Li, X. B. and Li, X. F. and Li, Z. W. and Liang, X. H. and Liao, J. Y. and Liu, B. S. and Liu, H. W. and Liu, H. X. and Liu, X. J. and Lu, X. F. and Luo, Q. and Luo, T. and Ma, R. C. and Ma, X. and Meng, B. and Nang, Y. and Nie, J. Y. and Ou, G. and Ren, X. Q. and Sai, N. and Song, X. Y. and Sun, L. and Tan, Y. and Tuo, Y. L. and Wang, C. and Wang, L. J. and Wang, W. S. and Wang, Y. S. and Wen, X. Y. and Wu, B. B. and Wu, B. Y. and Wu, M. and Xiao, G. C. and Xiao, S. and Xiong, S. L. and Yang, R. J. and Yang, S. and Yang, Y. J. and Yang, Y. J. and Yi, Q. B. and Yin, Q. Q. and You, Y. and Zhang, F. and Zhang, H. M. and Zhang, J. and Zhang, P. and Zhang, W. C. and Zhang, W. and Zhang, Y. F. and Zhang, Y. H. and Zhao, H. S. and Zhao, X. F. and Zheng, S. J. and Zheng, Y. G. and Zhou, D. K. (2021) Insight-HXMT Observations of a Possible Fast Transition from the Jet- to Wind-dominated State during a Huge Flare of GRS 1915+105. The Astrophysical Journal, 906 (1). L2. ISSN 2041-8213

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Abstract

In spite of their importance as standard candles in cosmology and as major major sites of nucleosynthesis in the universe, the kinds of progenitor systems that lead to Type Ia supernovae (SNe Ia) remains a subject of considerable debate in the literature. This is true even for the case of Tycho's supernova (SN) that exploded in 1572, although it has been deeply studied both observationally and theoretically. Analyzing X-ray data of Tycho's supernova remnant (SNR) obtained with Chandra in 2003, 2007, 2009, and 2015, we discover that the expansion before 2007 was substantially faster than radio measurements reported in the past decades and then rapidly decelerated during the last ∼15 yr. The result is well explained if the shock waves recently hit a wall of dense gas surrounding the SNR. In fact, such a gas structure is expected in the so-called single-degenerate scenario, in which the progenitor is a binary system consisting of a white dwarf and a stellar companion, whereas it is not generally predicted by a competing scenario, the double-degenerate scenario, which has a binary of two white dwarfs as the progenitor. Our result thus favors the former scenario. This work also demonstrates a novel technique to probe gas environments surrounding SNRs and thus disentangle the two progenitor scenarios for SNe Ia.

Item Type: Article
Subjects: Bengali Archive > Physics and Astronomy
Depositing User: Unnamed user with email support@bengaliarchive.com
Date Deposited: 16 May 2023 07:24
Last Modified: 03 Sep 2024 05:37
URI: http://science.archiveopenbook.com/id/eprint/1170

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