Two-dimensional models of core-collapse supernova explosions assisted by heavy sterile neutrinos

Posted by dbos Tokyo

Kavli Affiliate: Shunsaku Horiuchi | First 5 Authors: Kanji Mori, Tomoya Takiwaki, Kei Kotake, Shunsaku Horiuchi, | Summary: Core-collapse supernovae can be a copious source of sterile neutrinos, hypothetical particles that mix with active neutrinos. We develop two-dimensional stellar core-collapse models that incorporate the mixing between tau neutrinos and heavy sterile neutrinos — those with […]


Continue.. Two-dimensional models of core-collapse supernova explosions assisted by heavy sterile neutrinos

Two-dimensional models of core-collapse supernova explosions assisted by heavy sterile neutrinos

Posted by dbos Tokyo

Kavli Affiliate: Shunsaku Horiuchi | First 5 Authors: Kanji Mori, Tomoya Takiwaki, Kei Kotake, Shunsaku Horiuchi, | Summary: Core-collapse supernovae can be a copious source of sterile neutrinos, hypothetical particles that mix with active neutrinos. We develop two-dimensional stellar core-collapse models that incorporate the mixing between tau neutrinos and heavy sterile neutrinos — those with […]


Continue.. Two-dimensional models of core-collapse supernova explosions assisted by heavy sterile neutrinos

Velocity recostruction with graph neural networks

Posted by dbos Tokyo

Kavli Affiliate: Jia Liu | First 5 Authors: Hideki Tanimura, Albert Bonnefous, Jia Liu, Sanmay Ganguly, | Summary: In this work, we seek to improve the velocity reconstruction of clusters by using Graph Neural Networks — a type of deep neural network designed to analyze sparse, unstructured data. In comparison to the Convolutional Neural Network […]


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Velocity Dispersions of Quiescent Galaxies in IllustirisTNG

Posted by dbos MIT

Kavli Affiliate: Mark Vogelsberger | First 5 Authors: Jubee Sohn, Margaret J. Geller, Josh Borrow, Mark Vogelsberger, | Summary: We examine the central stellar velocity dispersion of subhalos based on IllustrisTNG cosmological hydrodynamic simulations. The central velocity dispersion is a fundamental observable that links galaxies with their dark matter subhalos. We carefully explore simulated stellar […]


Continue.. Velocity Dispersions of Quiescent Galaxies in IllustirisTNG

Multi-messenger Astrophysics of Black Holes and Neutron Stars as Probed by Ground-based Gravitational Wave Detectors: From Present to Future

Posted by dbos MIT

Kavli Affiliate: Lisa Barsotti | First 5 Authors: Alessandra Corsi, Lisa Barsotti, Emanuele Berti, Matthew Evans, Ish Gupta | Summary: The ground-based gravitational wave (GW) detectors LIGO and Virgo have enabled the birth of multi-messenger GW astronomy via the detection of GWs from merging stellar-mass black holes (BHs) and neutron stars (NSs). GW170817, the first […]


Continue.. Multi-messenger Astrophysics of Black Holes and Neutron Stars as Probed by Ground-based Gravitational Wave Detectors: From Present to Future

Multi-messenger Astrophysics of Black Holes and Neutron Stars as Probed by Ground-based Gravitational Wave Detectors: From Present to Future

Posted by dbos MIT

Kavli Affiliate: Lisa Barsotti | First 5 Authors: Alessandra Corsi, Lisa Barsotti, Emanuele Berti, Matthew Evans, Ish Gupta | Summary: The ground-based gravitational wave (GW) detectors LIGO and Virgo have enabled the birth of multi-messenger GW astronomy via the detection of GWs from merging stellar-mass black holes (BHs) and neutron stars (NSs). GW170817, the first […]


Continue.. Multi-messenger Astrophysics of Black Holes and Neutron Stars as Probed by Ground-based Gravitational Wave Detectors: From Present to Future

Revisiting formation of primordial black holes in a supercooled first-order phase transition

Posted by dbos Tokyo

Kavli Affiliate: Misao Sasaki | First 5 Authors: Marcos M. Flores, Alexander Kusenko, Misao Sasaki, , | Summary: We reexamine production of primordial black holes in a supercooled phase transition. While a mere overdensity associated with a surviving false-vacuum patch does not imply formation of a black hole, it is possible for such a patch […]


Continue.. Revisiting formation of primordial black holes in a supercooled first-order phase transition

Revisiting formation of primordial black holes in a supercooled first-order phase transition

Posted by dbos Tokyo

Kavli Affiliate: Misao Sasaki | First 5 Authors: Marcos M. Flores, Alexander Kusenko, Misao Sasaki, , | Summary: We reexamine production of primordial black holes in a supercooled phase transition. While a mere overdensity associated with a surviving false-vacuum patch does not imply formation of a black hole, it is possible for such a patch […]


Continue.. Revisiting formation of primordial black holes in a supercooled first-order phase transition

Tensor Completion with BMD Factor Nuclear Norm Minimization

Posted by dbos MIT

Kavli Affiliate: Eric Miller | First 5 Authors: Fan Tian, Mirjeta Pasha, Misha E. Kilmer, Eric Miller, Abani Patra | Summary: This paper is concerned with the problem of recovering third-order tensor data from limited samples. A recently proposed tensor decomposition (BMD) method has been shown to efficiently compress third-order spatiotemporal data. Using the BMD, […]


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Observed epochal variations in X-ray lines from the O Supergiant $ζ$ Puppis do not require substantial changes in the wind mass flux

Posted by dbos MIT

Kavli Affiliate: David P. Huenemoerder | First 5 Authors: Sean J. Gunderson, Kenneth G. Gayley, David P. Huenemoerder, Pragati Pradhan, Nathan A. Miller | Summary: We fit the high resolution textit{Chandra} X-ray spectra of the O supergiant $zeta$ Puppis using the variable boundary condition (VBC) line model to test the stability of its mass-loss rate […]


Continue.. Observed epochal variations in X-ray lines from the O Supergiant $ζ$ Puppis do not require substantial changes in the wind mass flux