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Based on the gravitational collapse time-scale is larger than the weak interaction time-scale at core densities $\rho > 10^{11} {gr}/ {cm}^{3}$, we approximately use the $\beta$-equilibrium condition and particle number conservations to…

High Energy Astrophysical Phenomena · Physics 2012-06-05 R. Mohammadi , Remo Ruffini , She-Sheng Xue

With myriads of detection events from a prospective Galactic core-collapse supernova, current and future neutrino detectors will be able to sample detailed, time-dependent neutrino fluxes and spectra. This offers enormous possibilities for…

High Energy Astrophysical Phenomena · Physics 2019-09-04 B. Müller

We present the first self-consistent, three-dimensional (3D) core-collapse supernova simulations performed with the Prometheus-Vertex code for a rotating progenitor star. Besides using the angular momentum of the 15 solar-mass model as…

High Energy Astrophysical Phenomena · Physics 2018-01-10 A. Summa , H. -Th. Janka , T. Melson , A. Marek

We present the first systematic study of neutrino emissions from massive stars, continuously tracking the late evolutionary stages through the early core-collapse supernova phase. Using progenitor and supernova models, we analyze the…

High Energy Astrophysical Phenomena · Physics 2026-03-11 Chinami Kato , Hiroki Nagakura , Akira Ito , Ryosuke Hirai , Shun Furusawa , Takashi Yoshida , Ryuichiro Akaho

Neutrinos from a supernova (SN) might undergo fast flavor conversions near the collapsed stellar core. We perform a detailed study of this intriguing possibility, analyzing time-dependent state-of-the-art 3D SN models of 9 and 20 Msun. Both…

High Energy Astrophysical Phenomena · Physics 2020-03-11 Robert Glas , H. -Thomas Janka , Francesco Capozzi , Manibrata Sen , Basudeb Dasgupta , Alessandro Mirizzi , Guenter Sigl

The next time a core-collapse supernova (SN) explodes in our galaxy, vari- ous detectors will be ready and waiting to detect its emissions of gravitational waves (GWs) and neutrinos. Current numerical simulations have successfully…

High Energy Astrophysical Phenomena · Physics 2015-09-30 Takaaki Yokozawa , Mitsuhiro Asano , Tsubasa Kayano , Yudai Suwa , Nobuyuki Kanda , Yusuke Koshio , Mark R. Vagins

1D and 2D supernova simulations for stars between 11 and 25 solar masses are presented, making use of the Prometheus/Vertex neutrino-hydrodynamics code, which employs a full spectral treatment of the neutrino transport. Multi-dimensional…

Astrophysics · Physics 2009-11-11 R. Buras , H. -Th. Janka , M. Rampp , K. Kifonidis

We study how the influence of the shock wave appears in neutrino oscillations and the neutrino spectrum using density profile of adiabatic explosion model of a core-collapse supernova which is calculated in an implicit Lagrangian code for…

High Energy Astrophysical Phenomena · Physics 2014-11-20 S. Kawagoe , T. Yoshida , T. Kajino , H. Suzuki , K. Sumiyoshi , S. Yamada

The neutrinos detected from the next Galactic core-collapse supernova will contain valuable information on the internal dynamics of the explosion. One mechanism leading to a temporal evolution of the neutrino signal is the variation of the…

Astrophysics · Physics 2008-11-26 James P. Kneller , Gail C. McLaughlin , Justin Brockman

Rotation of core-collapse supernovae (SNe) affects the neutrino emission characteristics. By comparing the neutrino properties of three three-dimensional SN simulations of a 15 M_sun progenitor (one non-rotating model and two models…

High Energy Astrophysical Phenomena · Physics 2019-10-09 Laurie Walk , Irene Tamborra , Hans-Thomas Janka , Alexander Summa

We have computed the gravitational wave signal from supernova core collapse using the presently most realistic input physics available. We start from state-of-the-art progenitor models of rotating and non-rotating massive stars, and…

Astrophysics · Physics 2009-11-10 Ewald Mueller , Markus Rampp , Robert Buras , H. -Thomas Janka , David H. Shoemaker

In this paper, we present the results of our three-dimensional, multi-group, multi-neutrino-species radiation/hydrodynamic simulation using the state-of-the-art code F{\sc{ornax}} of the terminal dynamics of the core of a non-rotating…

High Energy Astrophysical Phenomena · Physics 2018-10-10 David Vartanyan , Adam Burrows , David Radice , Aaron Skinner , Joshua Dolence

Time-dependent and direction-dependent neutrino and gravitational-wave (GW) signatures are presented for a set of 3D hydrodynamic models of parametrized, neutrino-driven supernova explosions of non-rotating 15 and 20 solar mass stars. We…

Solar and Stellar Astrophysics · Physics 2015-05-28 E. Müller , H. -Th. Janka , A. Wongwathanarat

Three-dimensional simulations of core-collapse supernovae are granting new insight into the as-yet uncertain mechanism that drives successful explosions. While there is still debate about whether explosions are obtained more easily in 3D…

High Energy Astrophysical Phenomena · Physics 2015-06-17 Sean M. Couch , Evan P. O'Connor

Measuring the rotation of core-collapse supernovae (SN) and of their progenitor stars is extremely challenging. Here it is demonstrated that neutrinos may potentially be employed as stellar gyroscopes, if phases of activity by the standing…

High Energy Astrophysical Phenomena · Physics 2018-12-12 Laurie Walk , Irene Tamborra , Hans-Thomas Janka , Alexander Summa

By performing three-dimensional (3D) simulations that demonstrate the neutrino-driven core-collapse supernovae aided by the standing accretion shock instability (SASI), we study how the spiral modes of the SASI can have impacts on the…

High Energy Astrophysical Phenomena · Physics 2015-05-28 Kei Kotake , Wakana Iwakami Nakano , Naofumi Ohnishi

We explore the dependence on spatial dimension of the viability of the neutrino heating mechanism of core-collapse supernova explosions. We find that the tendency to explode is a monotonically increasing function of dimension, with 3D…

Solar and Stellar Astrophysics · Physics 2014-11-21 J. Nordhaus , A. Burrows , A. Almgren , J. Bell

We investigate correlated gravitational wave and neutrino signals from rotating core-collapse supernovae with simulations. Using an improved mode identification procedure based on mode function matching, we show that a linear quadrupolar…

High Energy Astrophysical Phenomena · Physics 2019-12-18 John Ryan Westernacher-Schneider , Evan O'Connor , Erin O'Sullivan , Irene Tamborra , Meng-Ru Wu , Sean M. Couch , Felix Malmenbeck

We present a new series of supernova neutrino light curves and spectra calculated by numerical simulations for a variety of progenitor stellar masses (13-50Msolar) and metallicities (Z = 0.02 and 0.004), which would be useful for a broad…

High Energy Astrophysical Phenomena · Physics 2013-03-19 Ken'ichiro Nakazato , Kohsuke Sumiyoshi , Hideyuki Suzuki , Tomonori Totani , Hideyuki Umeda , Shoichi Yamada

A few seconds after bounce in a core-collapse supernova, the shock wave passes the density region corresponding to resonant neutrino oscillations with the ``atmospheric'' neutrino mass difference. The transient violation of the adiabaticity…

Astrophysics · Physics 2009-11-10 R. Tomas , M. Kachelriess , G. Raffelt , A. Dighe , H. -T. Janka , L. Scheck