GENERAL-RELATIVISTIC THREE-DIMENSIONAL MULTI-GROUP NEUTRINO RADIATION-HYDRODYNAMICS SIMULATIONS OF CORE-COLLAPSE SUPERNOVAE [PDF]
, 2016 We report on a set of long-term general-relativistic three-dimensional (3D) multi-group (energy-dependent) neutrino radiation-hydrodynamics simulations of core-collapse supernovae.
L. Roberts +5 more
semanticscholar +3 more sources
Supernova Abundance Generation [PDF]
Symposium - International Astronomical Union, 1991 Theoretical models of supernova explosions of various types are reviewed to obtain heavy element yields from supernovae. We focus on new models for SN 1987A, and Type Ia, Ib, and Ic supernovae. Maximum brightness and decline rate of their light curves suggest that 12–18 M⊙ stars produce larger amount of 56Ni than more massive stars. We discuss relative
K. Nomoto, T. Shigeyama, T. Tsujimoto
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Nebular-Phase Spectra of Type Ia Supernovae from the Las Cumbres Observatory Global Supernova Project [PDF]
, 2022 The observed diversity in Type Ia supernovae (SNe Ia) – the thermonuclear explosions of carbon-oxygen white dwarf stars used as cosmological standard candles – is currently met with a variety of explosion models and progenitor scenarios.
M. Graham +19 more
semanticscholar +1 more source
Constraining a possible time-variation of the speed of light along with the fine-structure constant using strong gravitational lensing and Type Ia supernovae observations [PDF]
Journal of Cosmology and Astroparticle Physics, 2022 The possible time variation of the fundamental constants of nature has been an active subject of research since the large-number hypothesis was proposed by Dirac.
L. R. Colaço +4 more
semanticscholar +1 more source
Progenitor Dependence of Hadron-quark Phase Transition in Failing Core-collapse Supernovae [PDF]
Astrophysical Journal, 2021 We study the consequences of a hadron-quark phase transition (PT) in failing core-collapse supernovae (CCSNe) that give birth to stellar-mass black holes (BH).
S. Zha +2 more
semanticscholar +1 more source
Supernovae-generated high-velocity compact clouds [PDF]
Astronomy & Astrophysics, 2018 Context. A previous study claimed the discovery of an intermediate-mass black hole (IMBH). This hypothetical black hole was invoked in order to explain the high-velocity dispersion in one of several dense molecular clouds near the Galactic center.
A. Yalinewich, P. Beniamini
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Generalized model-independent characterization of strong gravitational lenses V: reconstructing the lensing distance ratio by supernovae for a general Friedmann universe [PDF]
Monthly notices of the Royal Astronomical Society, 2018 We determine the cosmic expansion rate from supernovae of type Ia to set up a data-based distance measure that does not make assumptions about the constituents of the universe, i.e.
J. Wagner, Sven Meyer
semanticscholar +1 more source
Generation of gravitational radiation in dusty plasmas and supernovae [PDF]
Journal of Experimental and Theoretical Physics Letters, 2005 We present a novel nonlinear mechanism for exciting a gravitational radiation pulse (or a gravitational wave) by dust magnetohydrodynamic (DMHD) waves in dusty astrophysical plasmas. We derive the relevant equations governing the dynamics of nonlinearly coupled DMHD waves and a gravitational wave (GW). The system of equations is used to investigate the
Brodin, G., Marklund, M., Shukla, P. K.
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Effect of the Nuclear Equation of State on Relativistic Turbulence-induced Core-collapse Supernovae [PDF]
Astrophysical Journal, 2021 The nuclear equation of state (EOS) is an important component in the evolution of core-collapse supernovae. In this paper we make a survey of various EOSs in the literature and analyze their effect on spherical core-collapse models in which the effects ...
L. Boccioli +3 more
semanticscholar +1 more source
A generalized semi-analytic model for magnetar-driven supernovae
Monthly Notices of the Royal Astronomical Society, 2023 ABSTRACT Several types of energetic supernovae, such as superluminous supernovae (SLSNe) and broad-line Ic supernovae (Ic-BL SNe), could be powered by the spin-down of a rapidly rotating magnetar. Currently, most models used to infer the parameters for potential magnetar-driven supernovae make several unsuitable assumptions that likely ...
Conor M B Omand, Nikhil Sarin
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