197 citations · 992 across the 17 of their papers we have counts for
17 papers
Primordial Black Hole Triggered Type Ia Supernovae II: Comparison with Supernova Remnants and Galactic Chemical Evolution
Shing-Chi Leung, Seth Walther, Alexander Kusenko +2
The asteroid-mass class of Primordial Black Holes (PBHs) is one of the candidates for the dark matter in the universe. With a mass between $4 \times 10^{-17} < M_{\rm PBH} < 4 \tim…
Revisiting the Perseus Cluster III: Role of Aspherical Explosions on its Chemical Composition and Extension to Metal-Poor Stars and Galaxies
Shing-Chi Leung, Henry Yerdon, Seth Walther +2
The Perseus Cluster has been precisely measured by the legacy Hitomi telescope on the Si-group (Si, S, Ar, Ca) and Fe-group elements (Cr, Mn, Ni). These element abundance ratios pr…
Revisiting the Perseus Cluster II: Metallicity-Dependence of Massive Stars and Chemical Enrichment History
Shing-Chi Leung, Seth Walther, Henry Yerdon +2
The legacy Hitomi telescope has delivered the precise measurements of the chemical abundances in the Perseus Cluster, covering the Si-group (Si, S, Ar, Ca) and Fe-group elements (C…
Primordial Black Hole Triggered Type Ia Supernovae I: Impact on Explosion Dynamics and Light Curves
Shing-Chi Leung, Seth Walther, Ken'ichi Nomoto +1
Primordial black holes (PBHs) in the asteroid-mass window are compelling dark matter candidates, made plausible by the existence of black holes and by the variety of mechanisms of…
Revisiting the Perseus Cluster I: Resolving the Si/S/Ar/Ca ratios by Stellar Convection
Shing-Chi Leung, Ken'ichi Nomoto, Aurora Simionescu
Chemical abundance measurements from stars in the Milky Way to the intragalactic medium in the Perseus Cluster have challenged the spherical explosion models. Models in the literat…
Properties of Newly Formed Dust Grains in The Luminous Type IIn Supernova 2010jl
K. Maeda, T. Nozawa, D. K. Sahu +15
Supernovae (SNe) have been proposed to be the main production sites of dust grains in the Universe. Our knowledge on their importance to dust production is, however, limited by obs…
Optical studies of SN 2009jf: A type Ib supernova with an extremely slow decline and aspherical signature
D. K. Sahu, U. K. Gurugubelli, G. C. Anupama +1
Optical photometry and medium resolution spectroscopy of the type Ib supernova SN 2009jf, during the period to +250days with respect to the maximum are repor…
Nebular Spectra and Explosion Asymmetry of Type Ia Supernovae
Keiichi Maeda, Stefan Taubenberger, Jesper Sollerman +4
The spectral signatures of asymmetry in Type Ia Supernova (SN Ia) explosions are investigated, using a sample of late-time nebular spectra. First, a kinematical model is constructe…
Type Ib Supernova 2008D associated with the Luminous X-ray Transient 080109: An Energetic Explosion of a Massive Helium Star
Masaomi Tanaka, Nozomu Tominaga, Ken'ichi Nomoto +11
We present a theoretical model for supernova (SN) 2008D associated with the luminous X-ray transient 080109. The bolometric light curve and optical spectra of the SN are modelled b…
The Peculiar Type Ib Supernova 2006jc: A WCO Wolf-Rayet Star Explosion
N. Tominaga, M. Limongi, T. Suzuki +21
We present a theoretical model for Type Ib supernova (SN) 2006jc. We calculate the evolution of the progenitor star, hydrodynamics and nucleosynthesis of the SN explosion, and the…
Diversity of the Supernova - Gamma-Ray Burst Connection
K. Nomoto, N. Tominaga, M. Tanaka +4
The connection between the long Gamma Ray Bursts (GRBs) and Type Ic Supernovae (SNe) has revealed interesting diversity. We review the following types of the GRB-SN connection. (1)…
Hypernovae and Other Black-Hole-Forming Supernovae
K. Nomoto, K. Maeda, P. A. Mazzali +3
During the last few years, a number of exceptional core-collapse supernovae (SNe) have been discovered. Their kinetic energy of the explosions are larger by more than an order of m…
Gamma-Ray Signatures of Supernovae and Hypernovae
K. Nomoto, K. Maeda, Y. Mochizuki +4
We review the characteristics of nucleosynthesis and radioactivities in 'Hypernovae', i.e., supernovae with very large explosion energies ($ \gsim 10^{52} $ ergs) and their -ray…
Hypernova Nucleosynthesis and Galactic Chemical Evolution
K. Nomoto, K. Maeda, H. Umeda +1
We study nucleosynthesis in 'hypernovae', i.e., supernovae with very large explosion energies ($ \gsim 10^{52} $ ergs) for both spherical and aspherical explosions. The hypernova y…
The fading of SN 1997D
S. Benetti, M. Turatto, S. Balberg +7
We present a new set of spectroscopic and photometric data extending the observations of SN 1997D to over 400 days after the explosion. These observations confirm the peculiar prop…
The Peculiar Type Ic Supernova 1997ef: Another Hypernova
K. Iwamoto, T. Nakamura, K. Nomoto +7
SN 1997ef has been recognized as a peculiar supernova from its light curve and spectral properties. The object was classified as a Type Ic supernova (SN Ic) because its spectra are…
The Peculiar Type II Supernova 1997 D: A Case for a Very Low 56Ni Mass
M. Turatto, P. A. Mazzali, T. R. Young +14
SN 1997D in NGC 1536 is possibly the least luminous and energetic Type II supernova discovered to date. The entire light curve is subluminous, never reaching . The ra…