Results 11 to 20 of about 600 (117)
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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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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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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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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GENERALIZED SEMI-ANALYTICAL MODELS OF SUPERNOVA LIGHT CURVES [PDF]
The Astrophysical Journal, 2012 48 pages, 13 ...
Chatzopoulos, Emmanouil +2 more
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Generalized Chaplygin gas model, supernovae, and cosmic topology [PDF]
Physical Review D, 2006 In this work we study to which extent the knowledge of spatial topology may place constraints on the parameters of the generalized Chaplygin gas (GCG) model for unification of dark energy and dark matter. By using both the Poincaré dodecahedral and binary octahedral spaces as the observable spatial topologies, we examine the current type Ia supernovae (
Bento, M. C. +3 more
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Seed magnetic Fields Generated by Primordial Supernova Explosions [PDF]
Monthly Notices of the Royal Astronomical Society, 1998 Accepted for publication in MNRAS, 5 pages (MN plain TeX macros v1.6 file). Also available at http://www.iagusp.usp.br/~oswaldo (click "OPTIONS" and then "ARTICLES")
Miranda, O. D., Opher, M., Opher, R.
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GENERAL-RELATIVISTIC SIMULATIONS OF THREE-DIMENSIONAL CORE-COLLAPSE SUPERNOVAE [PDF]
The Astrophysical Journal, 2013 We study the three-dimensional (3D) hydrodynamics of the post-core-bounce phase of the collapse of a 27-solar-mass star and pay special attention to the development of the standing accretion shock instability (SASI) and neutrino-driven convection. To this end, we perform 3D general-relativistic simulations with a 3-species neutrino leakage scheme.
Ott, Christian D. +8 more
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The supernova-regulated ISM [PDF]
Astronomy & Astrophysics, 2018 Context.The forcing of interstellar turbulence, driven mainly by supernova (SN) explosions, is irrotational in nature, but the development of significant amounts of vorticity and helicity, accompanied by large-scale dynamo action, has been reported.Aim.Several earlier investigations examined vorticity production in simpler systems; here all the ...
M. J. Käpylä +3 more
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GENERAL RELATIVITY AND NEUTRINO-DRIVEN SUPERNOVA WINDS [PDF]
The R-Process, 2004 To date, detailed core-collapse supernova simulations have not succeeded in elucidating the explosion mechanism. But whatever the mechanism turns out to be, there will be a neutrino-heated outflow between the hot, newly-born neutron star and the outgoing supernova shock wave whose neutron richness, low density, and high temperature could provide ...
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