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Constraints on single-degenerate Chandrasekhar mass progenitors of Type Iax supernovae
Zheng-Wei Liu, Takashi J. Moriya, Richard J. Stancliffe +1
SNe Iax are proposed as one new sub-class of SNe Ia. SNe Iax have been estimated to account for ~5-30% of the total SN Ia rate, and most SNe Iax have been discovered in late-type g…
Pulsations of red supergiant pair-instability supernova progenitors leading to extreme mass loss
Takashi J. Moriya, Norbert Langer
Recent stellar evolution models show consistently that very massive metal-free stars evolve into red supergiants shortly before they explode. We argue that the envelopes of these s…
Interacting supernovae from photoionization-confined shells around red supergiant stars
Jonathan Mackey, Shazrene Mohamed, Vasilii V. Gvaramadze +5
Betelgeuse, a nearby red supergiant, is a runaway star with a powerful stellar wind that drives a bow shock into its surroundings. This picture has been challenged by the discovery…
Electron-capture supernovae exploding within their progenitor wind
Takashi J. Moriya, Nozomu Tominaga, Norbert Langer +3
The most massive stars on the asymptotic giant branch (AGB), so called super-AGB stars, are thought to produce supernovae (SNe) triggered by electron captures in their degenerate O…
Constraining Physical Properties of Type IIn Supernovae through Rise Times and Peak Luminosities
Takashi J. Moriya, Keiichi Maeda
We investigate the diversity in the wind density, supernova ejecta energy, and ejecta mass in Type IIn supernovae based on their rise times and peak luminosities. We show that the…
Detection of the Gravitational Lens Magnifying a Type Ia Supernova
Robert M. Quimby, Masamune Oguri, Anupreeta More +8
Objects of known brightness, like Type Ia supernovae (SNIa), can be used to measure distances. If a massive object warps spacetime to form multiple images of a background SNIa, a d…
Mass loss of massive stars near the Eddington luminosity by core neutrino emission shortly before their explosion
Takashi J. Moriya
We present a novel mechanism to enhance the mass-loss rates of massive stars shortly before their explosion. The neutrino luminosities of the stellar core of massive stars become l…
On the 'snow-plow' phase of supernovae interacting with dense circumstellar media
Takashi J. Moriya
Recently, Moriya et al. (2013) developed an analytic bolometric light curve model for supernovae interacting with dense circumstellar media. Because of the dense circumstellar medi…
Mass-loss histories of Type IIn supernova progenitors within decades before their explosion
Takashi J. Moriya, Keiichi Maeda, Francesco Taddia +3
We present results of a systematic study of the mass-loss properties of Type IIn supernova progenitors within decades before their explosion. We apply an analytic light curve model…