Showing 2019 · astro-ph.HEShow all

11 papers · 2 filters

astro-ph.HE2019★ 64 cited

Constraining properties of the next nearby core-collapse supernova with multi-messenger signals

MacKenzie L. Warren, Sean M. Couch, Evan P. O'Connor +1

With the advent of modern neutrino and gravitational wave detectors, the promise of multi-messenger detections of the next galactic core-collapse supernova has become very real. Su…

astro-ph.HE2019★ 8 cited

On the Expansion, Age, and Origin of the Puzzling Shell/Pulsar Wind Nebula G310.6-1.6

Stephen P. Reynolds, Kazimierz J. Borkowski

We present a 142-ks Chandra observation of the enigmatic combination supernova remnant G310.6-1.6 consisting of a bright pulsar-wind nebula driven by an energetic pulsar, surrounde…

astro-ph.HE2019★ 46 cited

Co-production of light and heavy -process elements via fission deposition

Nicole Vassh, Matthew R. Mumpower, Gail C. McLaughlin +2

We apply for the first time fission yields determined across the chart of nuclides from the macroscopic-microscopic theory of the Finite Range Liquid Drop Model to simulations of r…

astro-ph.HE2019★ 4 cited

Wolf-Rayet stars in young massive star clusters as potential sources of Galactic cosmic rays

Maria E Kalyashova, Andrei M Bykov, Sergei M Osipov +2

For most elements, the isotopic ratios seen in cosmic rays (CRs) are similar to those in the solar wind. The most important exception to this is Ne/Ne where the CR va…

astro-ph.HE2019★ 30 cited

Coupling Neutrino Oscillations and Simulations of Core-Collapse Supernovae

Charles J. Stapleford, Carla Fröhlich, James P. Kneller

At the present time even the most sophisticated, multi-dimensional simulations of core-collapse supernovae do not (self-consistently) include neutrino flavor transformation. This p…

astro-ph.HE2019★ 3 cited

Impact of Uncertainties in Astrophysical Reaction Rates on Nucleosynthesis in the Process

T. Rauscher, N. Nishimura, G. Cescutti +3

The process appears in proton-rich, hot matter which is expanding in a neutrino wind and may be realised in explosive environments such as core-collapse supernovae or in outfl…

astro-ph.HE2019★ 9 cited

High-energy cosmic rays from compact galactic star clusters: particle fluxes and anisotropy

A. M. Bykov, M. E. Kalyashova, D. C. Ellison +1

It has been shown that supernova blast waves interacting with winds from massive stars in compact star clusters may be capable of producing cosmic-ray (CR) protons to above $10^{17…

astro-ph.HE2019★ 3 cited

Monte Carlo modelling of particle acceleration in collisionless shocks with an effective mean electric field

Sergei M Osipov, Andrei M Bykov, Donald C Ellison

Relativistic particle acceleration in collisionless shocks of supernova remnants is accompanied by magnetic field amplification from cosmic ray (CR) driven plasma instabilities. Be…

astro-ph.HE2019★ 53 cited

Actinide-rich and Actinide-poor -Process Enhanced Metal-Poor Stars do not Require Separate -Process Progenitors

Erika M. Holmbeck, Anna Frebel, G. C. McLaughlin +3

The astrophysical production site of the heaviest elements in the universe remains a mystery. Incorporating heavy element signatures of metal-poor, -process enhanced stars into…

astro-ph.HE2019★ 95 cited

Neutrino Quantum Kinetics in Compact Objects

Sherwood A. Richers, Gail C. McLaughlin, James P. Kneller +1

Neutrinos play a critical role of transporting energy and changing the lepton density within core-collapse supernovae and neutron star mergers. The quantum kinetic equations (QKEs)…

astro-ph.HE2019★ 6 cited

Synthetic Spectra of Pair-Instability Supernovae in 3D

E. Chatzopoulos, M. S. Gilmer, R. T. Wollaeger +2

Pair-Instability Supernovae (PISNe) may signal the deaths of extremely massive stars in the local Universe or massive primordial stars after the end of the Cosmic Dark Ages. Hydrod…