In massive self-gravitating black hole disks, magnetic turbulence damps the m=1 instability and gravitational waves when aligned with the spin, but strongly enhances both when the disk is antialigned.
Black Hole Formation in Failing Core-Collapse Supernovae
8 Pith papers cite this work. Polarity classification is still indexing.
8
Pith papers citing it
abstract
We present results of a systematic study of failing core-collapse supernovae and the formation of stellar-mass black holes (BHs). Using our open-source general-relativistic 1.5D code GR1D equipped with a three-species neutrino leakage/heating scheme and over 100 presupernova models, we study the effects of the choice of nuclear equation of state (EOS), zero-age main sequence (ZAMS) mass and metallicity, rotation, and mass-loss prescription on BH formation. We find that the outcome, for a given EOS, can be estimated, to first order, by a single parameter, the compactness of the stellar core at bounce. By comparing protoneutron star (PNS) structure at the onset of gravitational instability with solutions of the Tolman-Oppenheimer-Volkof equations, we find that thermal pressure support in the outer PNS core is responsible for raising the maximum PNS mass by up to 25% above the cold NS value. By artificially increasing neutrino heating, we find the critical neutrino heating efficiency required for exploding a given progenitor structure and connect these findings with ZAMS conditions, establishing, albeit approximately, for the first time based on actual collapse simulations, the mapping between ZAMS parameters and the outcome of core collapse. We also study the effect of progenitor rotation and find that the dimensionless spin of nascent BHs may be robustly limited below a^* = Jc/GM^2 = 1 by the appearance of nonaxisymmetric rotational instabilities.
citation-role summary
background 3
citation-polarity summary
roles
background 3polarities
background 3representative citing papers
Chandra non-detection and heterogeneous RV data leave AzV 493's putative highly eccentric companion unconfirmed, with only L_X < 2.5e33 erg/s and conditional mass lower limits if RV variations are real.
Varying mass loss and overshooting in RSG models shows core contraction and heating interrupted by silicon burning, shifting pre-SN neutrino flux to higher energies and beta-process dominance hours before collapse.
Simulations show the low-T/|W| instability develops robustly across five nuclear EOS in a rapidly rotating 35 M⊙ progenitor, with dominant GW frequency correlating to PNS compactness and stiffness.
Neutrino light curves from neutron stars may show an enhanced peak-to-plateau ratio, a density-tracing delay, and transient spectral hardening as diagnostics of hadron-quark phase transitions on 10-50 ms timescales.
citing papers explorer
-
Multimessenger Signatures of Tilted, Self-Gravitating, Black Hole Disks
In massive self-gravitating black hole disks, magnetic turbulence damps the m=1 instability and gravitational waves when aligned with the spin, but strongly enhances both when the disk is antialigned.
-
Constraints on Binarity for the Extreme Oe Variable Star AzV 493
Chandra non-detection and heterogeneous RV data leave AzV 493's putative highly eccentric companion unconfirmed, with only L_X < 2.5e33 erg/s and conditional mass lower limits if RV variations are real.
-
The Effect of Mass Loss and Convective Overshooting on the Pre-Collapse Structure, Composition, and Neutrino Emission of Red Supergiants
Varying mass loss and overshooting in RSG models shows core contraction and heating interrupted by silicon burning, shifting pre-SN neutrino flux to higher energies and beta-process dominance hours before collapse.
-
Impact of the equation of state on core collapse supernovae I: the low-$T/|W|$ instability
Simulations show the low-T/|W| instability develops robustly across five nuclear EOS in a rapidly rotating 35 M⊙ progenitor, with dominant GW frequency correlating to PNS compactness and stiffness.
-
Neutrino diagnostics of hadron-quark phase transition in Neutron Stars
Neutrino light curves from neutron stars may show an enhanced peak-to-plateau ratio, a density-tracing delay, and transient spectral hardening as diagnostics of hadron-quark phase transitions on 10-50 ms timescales.
- Flavor Conversion Enhances or Suppresses Supernova Explodability Independent of the Progenitor Mass
- Neutrino Flavor Conversion Shapes the Rate of Failed Core-collapse Supernovae
- Parameter Estimation Horizon of Core-Collapse Supernovae with Current and Next-Generation Gravitational-Wave Detectors