It is generally believed that Type Ia supernovae are thermonuclear explosions of carbon–oxygen white dwarfs (WDs). However, there is currently no consensus regarding the events leading to the explosion. A binary WD (WD–WD) merger is a p...
H. Sano H. Yamaguchi M. Aruga Y. Fukui K. Tachihara M. D. Filipović G. Rowell
The Astrophysical Journal 933(2) 157-157 2022年7月
Abstract
We report new H i observations of the Type Ia supernova remnant (SNR) SN 1006 using the Australia Telescope Compact Array with an angular resolution of (∼2 pc at the ...
Publications of the Astronomical Society of Japan 73(5) 1405-1417 2021年10月 [査読有り]
Abstract
We discover an unidentified strong emission feature in the X-ray spectrum of EXO 1745−248 obtained by RXTE at 40 hr after the peak of a superburst. The structure was centered at 6.6 keV and significantly broadened with a large equivalen...
Yuken Ohshiro Hiroya Yamaguchi Shing-Chi Leung Ken’ichi Nomoto Toshiki Sato Takaaki Tanaka Hiromichi Okon Robert Fisher Robert Petre Brian J. Williams
The Astrophysical Journal Letters 913(2) L34-L34 2021年6月 [査読有り]
Abstract
The supernova remnant (SNR) 3C 397 is thought to originate from a Type Ia supernova (SN Ia) explosion of a near-Chandrasekhar-mass (MCh) progenitor, based on the enhanced abundances of Mn and Ni revealed by previous X-ray stu...
Hiroya Yamaguchi Fabio Acero Chuan-Jui Li You-Hua Chu
The Astrophysical Journal Letters 910(2) L24-L24 2021年4月 [査読有り]
Abstract
The geometric structure of supernova remnants (SNR) provides a clue to unveiling the pre-explosion evolution of their progenitors. Here we present an X-ray study of N103B (0509–68.7), a Type Ia SNR in the Large Magellanic Cloud, that is...
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