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In comparing the two alternative explosion mechanisms of core-collapse supernovae (CCSNe), I examine recent three-dimensional (3D) hydrodynamical simulations of CCSNe in the frame of the delayed-neutrino explosion mechanism (neutrino…

高能天体物理现象 · 物理学 2024-12-17 Noam Soker

The interpretation of present and future neutrino experiments requires accurate theoretical predictions for neutrino-nucleus scattering rates. Neutrino structure functions can be reliably evaluated in the deep-inelastic scattering regime…

高能物理 - 唯象学 · 物理学 2023-06-06 Alessandro Candido , Alfonso Garcia , Giacomo Magni , Tanjona Rabemananjara , Juan Rojo , Roy Stegeman

We investigate explosive nucleosynthesis in a non-rotating 15$M_\odot$ star with solar metallicity that explodes by a neutrino-heating supernova (SN) mechanism aided by both standing accretion shock instability (SASI) and convection. To…

高能天体物理现象 · 物理学 2015-05-28 Shin-ichiro Fujimoto , Kei Kotake , Masa-aki Hashimoto , Masaomi Ono , Naofumi Ohnishi

We have been working within the fundamental paradigm that core collapse supernovae (CCSNe) may be neutrino driven, since the first suggestion of this by Colgate and White nearly five decades ago. Computational models have become…

Calculations of the cosmic rate of core collapses, and the associated neutrino flux, commonly assume that a fixed fraction of massive stars collapse to black holes. We argue that recent results suggest that this fraction instead increases…

高能天体物理现象 · 物理学 2015-11-23 Hasan Yuksel , Matthew D. Kistler

Uncertainties in our knowledge of the properties of dense matter near and above nuclear saturation density are among the main sources of variations in multi-messenger signatures predicted for core-collapse supernovae (CCSNe) and the…

高能天体物理现象 · 物理学 2019-11-13 A. S. Schneider , L. F. Roberts , C. D. Ott , E. O'connor

We report on a method, PUSH, for triggering core-collapse supernova explosions of massive stars in spherical symmetry. We explore basic explosion properties and calibrate PUSH such that the observables of SN1987A are reproduced. Our…

太阳与恒星天体物理 · 物理学 2016-08-08 A. Perego , M. Hempel , C. Fröhlich , K. Ebinger , M. Eichler , J. Casanova , M. Liebendoerfer , F. -K. Thielemann

Long duration gamma-ray bursts (GRBs) have often been considered as the natural evolution of some core-collapse supernova (CCSN) progenitors. However, the fraction of CCSNe linked to astrophysical jets and their properties are still poorly…

高能天体物理现象 · 物理学 2018-03-06 Peter B. Denton , Irene Tamborra

The future neutrino research program will require improved precision. A major source of uncertainty is the interaction of neutrinos with nuclei that serve as targets for such experiments. Broadly speaking, this interaction often depends,…

高能物理 - 唯象学 · 物理学 2024-10-16 Gil Paz

In today's scenario, going beyond Einstein's theory of gravity leads us to some more complete and modified gravity theories. One of them is the $f(R,T)$ gravity in which $ R $ is the Ricci scalar, and $ T $ is the trace of the…

广义相对论与量子宇宙学 · 物理学 2022-01-04 P. K. Sahoo , Sanjay Mandal , Simran Arora

We present in this paper a public data release of an unprecedentedly-large set of core-collapse supernova (CCSN) neutrino emission models, comprising one hundred detailed 2D-axisymmetric radiation-hydrodynamic simulations evolved out to as…

高能天体物理现象 · 物理学 2023-07-19 David Vartanyan , Adam Burrows

Core-collapse supernovae (CCSNe) offer extremely valuable insights into the dynamics of galaxies. Neutrino time profiles from CCSNe, in particular, could reveal unique details about collapsing stars and particle behavior in dense…

We present neutrino-transport hydrodynamic simulations of electron-capture supernovae (ECSNe) in \texttt{FLASH} with new two-dimensional (2D) collapsing progenitor models. These progenitor models feature the 2D modelling of oxygen-flame…

高能天体物理现象 · 物理学 2022-06-14 Shuai Zha , Evan P. O'Connor , Sean M. Couch , Shing-Chi Leung , Ken'ichi Nomoto

The measurement of neutrino oscillations and exotic physics searches are important parts of the physics program in the near future, with new state-of-the-art experiments planned within the next decade. Future and modern experiments in these…

核理论 · 物理学 2020-06-22 G. B. King , K. Mahn , L. Pickering , N. Rocco

We investigate observable signatures of a first-order quantum chromodynamics (QCD) phase transition in the context of core collapse supernovae. To this end, we conduct axially symmetric numerical relativity simulations with multi-energy…

高能天体物理现象 · 物理学 2022-01-19 Takami Kuroda , Tobias Fischer , Tomoya Takiwaki , Kei Kotake

We have developed an implicit, multi-group, time-dependent, spherical neutrino transport code based on the Feautrier variables, the tangent-ray method, and accelerated ${\bf \Lambda}$ iteration. The code achieves high angular resolution, is…

天体物理学 · 物理学 2009-10-31 A. Burrows , T. Young , P. A. Pinto , R. Eastman , T. Thompson

The detection of galactic supernova (SN) neutrinos represents one of the future frontiers of low-energy neutrino physics and astrophysics. The neutron coherence of neutral currents (NC) allows quite large cross sections in the case of…

高能物理 - 唯象学 · 物理学 2015-05-27 J. D. Vergados

We investigate in this paper the core-collapse supernova explosion mechanism in both one and two dimensions. We verify the usefulness of neutrino-driven overturn (``convection'') between the shock and the neutrinosphere in igniting the…

天体物理学 · 物理学 2009-10-28 Adam Burrows , John Hayes , Bruce Fryxell

Motivated by the recent observation of coherent elastic neutrino-nucleus scattering (CE$\nu $NS) at the COHERENT experiment, our goal is to explore its potential in probing important nuclear structure parameters. We show that the recent…

高能物理 - 唯象学 · 物理学 2019-12-09 D. K. Papoulias , T. S. Kosmas , R. Sahu , V. K. B. Kota , M. Hota

We perform hydrodynamical simulations of core collapse supernovae (CCSNe) with a cylindrically-symmetrical numerical code (FLASH) to study the inflation of bubbles and the initiation of the explosion within the frame of the jittering-jets…

高能天体物理现象 · 物理学 2015-06-04 Oded Papish , Noam Soker