Results 21 to 30 of about 600 (117)
Generation of Cosmic rays in Historical Supernova Remnants [PDF]
EPJ Web of Conferences, 2013 We present the results of observations of two types of Galactic supernova remnants with the SHALON mirror Cherenkov telescope of Tien-Shan high-mountain Observatory: the shell-type supernova remnants Tycho, Cas A and IC 443; plerions Crab Nebula, 3c58(SN1181) and Geminga (probably plerion).
Sinitsyna V.Y., Sinitsyna V.G.
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Magnetic Field Generation by Charge Exchange in a Supernova Remnant in the Early Universe [PDF]
The Astrophysical Journal, 2021 Abstract We present new-generation mechanisms of magnetic fields in supernova remnant shocks propagating to partially ionized plasmas in the early universe. Upstream plasmas are dissipated at the collisionless shock, but hydrogen atoms are not dissipated because they do not interact with electromagnetic fields.
Shuhei Kashiwamura, Yutaka Ohira
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THE GENERAL RELATIVISTIC INSTABILITY SUPERNOVA OF A SUPERMASSIVE POPULATION III STAR [PDF]
The Astrophysical Journal, 2014 The formation of supermassive Population III stars with masses $\gtrsim$ 10,000 Msun in primeval galaxies in strong UV backgrounds at $z \sim$ 15 may be the most viable pathway to the formation of supermassive black holes by $z \sim$ 7. Most of these stars are expected to live for short times and then directly collapse to black holes, with little or no
Ke-Jung Chen +5 more
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Latest supernova data in the framework of the generalized Chaplygin gas model [PDF]
Monthly Notices of the Royal Astronomical Society, 2004 We use the most recent Type-Ia Supernova data in order to study the dark energy - dark matter unification approach in the context of the Generalized Chaplygin Gas (GCG) model. Rather surprisingly, we find that data allow models with $α> 1$. We have studied how the GCG adjusts flat and non-flat models, and our results show that GCG is consistent with
Bertolami, O. +3 more
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Generalized Kompaneets formalism for inelastic neutrino-nucleon scattering in supernova simulations [PDF]
Physical Review D, 2020 Based on the Kompaneets approximation, we develop a robust methodology to calculate spectral redistribution via inelastic neutrino-nucleon scattering in the context of core-collapse supernova simulations. The resulting equations conserve lepton number to machine precision and scale linearly, not quadratically, with number of energy groups.
Tianshu Wang, Adam Burrows
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Physical Review D, 2019 We optimize the third-generation gravitational-wave detector to maximize the range to detect core-collapse supernovae. Based on three-dimensional simulations for core-collapse and the corresponding gravitational-wave waveform emitted, the corresponding detection range for these waveforms is limited to within our galaxy even in the era of third ...
Srivastava, Varun +6 more
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General Relativistic Instability Supernovae
General Relativistic Instability Supernovae学位の種別:課程博士|審査委員会委員 : （主査）東京大学教授 鈴木 建, 東京大学教授 戸谷 友則, 東京大学教授 土居 守, 東京大学教授 吉田 直紀, 東北大学教授 大向 ...
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General Relativistic Explosion Models of Core-Collapse Supernovae
, 2011 We present results from the first generation of multi-dimensional general relativistic neutrino hydrodynamics simulations of core-collapse supernovae. A comparison with models computed using either the purely Newtonian approximation or the "effective gravitational potential" approach reveals appreciable quantitative differences in the heating ...
Müller, B. +3 more
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Feedback from the First Supernovae in Protogalaxies: The Fate of the Generated Metals
The Astrophysical Journal, 2003 We investigate the chemo-dynamical effects of multiple supernova explosions in the central region of primordial galaxies using three-dimensional hydrodynamical simulations of the inhomogenous interstellar medium down to parsec-scales. We find that the final protogalactic structure and metal distribution depend strongly on the number of SNe ...
Wada, Keiichi, Venkatesan, Aparna
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Generalized Chaplygin Gas Models Tested with Type Ia Supernovae
The Astrophysical Journal, 2005 The generalized Chaplygin gas (GCG), with the equation of state p = -A/ρα, was recently proposed as a candidate for dark energy in the universe. In this paper we confront the GCG with Type Ia supernova (SN Ia) data using available samples. Specifically, we have tested the GCG cosmology in three different classes of models with (1) Ωm = 0.3 and ΩCh = 0 ...
Biesiada, Marek +2 more
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