Results 41 to 50 of about 632,753 (317)

Gravitational collapse to a Kerr–Newman black hole [PDF]

open access: yes, 2017
We present the first systematic study of the gravitational collapse of rotating and magnetised neutron stars to charged and rotating (Kerr-Newman) black holes. In particular, we consider the collapse of magnetised and rotating neutron stars assuming that
A. Nathanail, E. Most, L. Rezzolla
semanticscholar   +1 more source

Characterizing the Gravitational Wave Signal from Core-collapse Supernovae [PDF]

open access: yesAstrophysical Journal, 2018
We study the gravitational wave (GW) signal from eight new 3D core-collapse supernova simulations. We show that the signal is dominated by f- and g-mode oscillations of the protoneutron star (PNS) and its frequency evolution encodes the contraction rate ...
D. Radice   +4 more
semanticscholar   +1 more source

QUANTIZING GRAVITATIONAL COLLAPSE [PDF]

open access: yesQuantum Theory and Symmetries, 2004
I summarize some results obtained from a canonical quantization of gravitational collapse. The quantization is carried out in Kuchar variables on the LeMaitre-Tolman-Bondi family of spacetimes. I show how mass quantization, the black hole entropy and Hawking radiation may be understood in these models.
openaire   +2 more sources

A perturbative approach to the time-dependent Karmarkar condition

open access: yesEuropean Physical Journal C: Particles and Fields, 2021
In this work we employ a perturbative approach to study the gravitational collapse of a shear-free radiating star. The collapse proceeds from an initial static core satisfying the time-independent Karmarkar condition and degenerates into a quasi-static ...
Megandhren Govender   +3 more
doaj   +1 more source

The Gravitational Wave Signal from Core-collapse Supernovae [PDF]

open access: yesAstrophysical Journal, 2018
We study gravitational waves (GWs) from a set of 2D multigroup neutrino radiation hydrodynamic simulations of core-collapse supernovae (CCSNe). Our goal is to systematize the current knowledge about the post-bounce CCSN GW signal and recognize the ...
V. Morozova   +3 more
semanticscholar   +1 more source

Neutrinos from gravitational collapse [PDF]

open access: yesThe Astrophysical Journal, 1986
A review is made of neutrino fluxes produced by gravitational collapse events (type-II supernovae?). Recent work of Mayle, Wilson and Schramm is used to examine those aspects of neutrino signal which are relatively independent of the collapse model and those aspects which are sensitive to model details.
RON MAYLE   +2 more
openaire   +1 more source

PARTICLES, NEUTRINO AND PHOTONS IN THE MAGNETOSPHERE OF A COLLAPSING STAR

open access: yesOdessa Astronomical Publications, 2014
The formation of the stellar magnetosphere during the gravitational collapse is discussed. Primary protons and electrons accelerate in the star’s magnetosphere during its gravitational collapse.
V. G. Kryvdyk
doaj   +1 more source

An Optically Targeted Search for Gravitational Waves emitted by Core-Collapse Supernovae during the First and Second Observing Runs of Advanced LIGO and Advanced Virgo. [PDF]

open access: yes, 2019
We present the results from a search for gravitational-wave transients associated with core-collapse supernovae observed within a source distance of approximately 20 Mpc during the first and second observing runs of Advanced LIGO and Advanced Virgo.
The Ligo Scientific Collaboration   +499 more
semanticscholar   +1 more source

Gravitational wave emission from 3D explosion models of core-collapse supernovae with low and normal explosion energies [PDF]

open access: yesMonthly notices of the Royal Astronomical Society, 2018
Understanding gravitational wave emission from core-collapse supernovae will be essential for their detection with current and future gravitational wave detectors.
J. Powell, B. Müller
semanticscholar   +1 more source

Gravitinos from gravitational collapse [PDF]

open access: yesPhysical Review D, 1998
6 pages, latex, no figures.
Grifols, J. A., Masso, E., Toldra, R.
openaire   +3 more sources

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