Zobrazeno 1 - 10
of 10
pro vyhledávání: '"Ryoma Ouchi"'
Autor:
Amar Aryan, S B Pandey, WeiKang Zheng, Alexei V Filippenko, Jozsef Vinko, Ryoma Ouchi, Thomas G Brink, Andrew Halle, Jeffrey Molloy, Sahana Kumar, Goni Halevi, Charles D Kilpatrick, Amit Kumar, Rahul Gupta, Amit Kumar Ror
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 517:1750-1766
In this work, photometric and spectroscopic analyses of a very low-luminosity Type IIb supernova (SN) 2016iyc have been performed. SN 2016iyc lies near the faint end among the distribution of similar supernovae (SNe). Given lower ejecta mass ($M_{\rm
Autor:
Keiichi Maeda, Ryoma Ouchi
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 500:1889-1894
SN 2009kf is an exceptionally bright Type IIP Supernova (SN IIP) discovered by the Pan-STARRS 1 survey. The $V$-band magnitude at the plateau phase is $M_{V} = -18.4$ mag, which is much brighter than typical SNe IIP. We propose that its unusual prope
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 497:5395-5404
Type II supernovae (SNe) interacting with disklike circumstellar matter (CSM) have been suggested as an explanation of some unusual Type II SNe, e.g., the so-called "impossible" SN, iPTF14hls. There are some radiation hydrodynamics simulations for su
Autor:
Carolina Gould, Jozsef Vinko, Kuntal Misra, H. Yuk, A. Aryan, Ryoma Ouchi, Keiichi Maeda, Amit Kumar, Timothy W. Ross, WeiKang Zheng, Shashi B. Pandey, Asia deGraw, Rahul Gupta, Alexei V. Filippenko, Samantha Stegman, S. N. Tiwari, Abhay Pratap Yadav, Sameen Yunus, Goni Halevi, Raphael Baer-Way, Sahana Kumar, Isaac Shivvers, Dipankar Bhattacharya, David A. H. Buckley
Photometric and spectroscopic analyses of the intermediate-luminosity Type Ib supernova (SN) 2015ap and of the heavily reddened Type Ib SN~2016bau are discussed. Photometric properties of the two SNe, such as colour evolution, bolometric luminosity,
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::866d3017848d8cf989630d3372ea5337
http://arxiv.org/abs/2105.05088
http://arxiv.org/abs/2105.05088
Recent works have indicated that the $^{56}$Ni masses estimated for Stripped Envelope SNe (SESNe) are systematically higher than those estimated for SNe II. Although this may suggest a distinct progenitor structure between these types of SNe, the pos
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6a1acf84204f0ea54576318de0df6576
Autor:
Masayuki Yamanaka, Makoto Uemura, Masaomi Tanaka, Takashi J. Moriya, Keiichi Maeda, Naoki Kawahara, Ryoma Ouchi, Tatsuya Nakaoka, Sergei Blinnikov, Koichi Itagaki, Miho Kawabata, Nozomu Tominaga, Koji S. Kawabata
We present optical and near-infrared observations of the rapidly evolving supernova (SN) 2017czd that shows hydrogen features. The optical light curves exhibit a short plateau phase ($\sim 13$ days in the $R$-band) followed by a rapid decline by $4.5
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e1f203d927331bbb9f02ce4fd363dc99
http://arxiv.org/abs/1904.02659
http://arxiv.org/abs/1904.02659
Autor:
Keiichi Maeda, Ryoma Ouchi
Publikováno v:
The Astrophysical Journal. 877:92
Recent observations of supernovae (SNe) just after the explosion suggest that a good fraction of SNe have the confined circumstellar material (CSM) in the vicinity, and the pre-SN enhanced mass loss may be a common property. The physical mechanism of
Autor:
Ryoma Ouchi, Keiichi Maeda
Publikováno v:
The Astrophysical Journal. 840:90
Several Type IIb supernovae (SNe IIb) have been extensively studied, both in terms of the progenitor radius and the mass-loss rate in the final centuries before the explosion. While the sample is still limited, evidence has been accumulating that the
Autor:
Ryoma Ouchi, Keiichi Maeda
Publikováno v:
Astrophysical Journal; Jun2019, Vol. 877 Issue 2, p1-1, 1p
Autor:
Tatsuya Nakaoka, Takashi J. Moriya, Masaomi Tanaka, Masayuki Yamanaka, Koji S. Kawabata, Keiichi Maeda, Miho Kawabata, Naoki Kawahara, Koichi Itagaki, Ryoma Ouchi, Sergei I. Blinnikov, Nozomu Tominaga, Makoto Uemura
Publikováno v:
Astrophysical Journal; 4/10/2019, Vol. 875 Issue 1, p1-1, 1p