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11 papers
An Expanded Set of Los Alamos OPLIB Tables in MESA: Type-1 Rosseland-mean Opacities and Solar Models
Ebraheem Farag, Christopher J. Fontes, F. X. Timmes +11
We present a set of 1194 Type-1 Rosseland-mean opacity tables for four different metallicity mixtures. These new Los Alamos OPLIB atomic radiative opacity tables are an order of ma…
Photons from neutrinos: the gamma ray echo of a supernova neutrino burst
Cecilia Lunardini, Joshua Loeffler, Mainak Mukhopadhyay +3
When a star undergoes core collapse, a vast amount of energy is released in a ~10 s long burst of neutrinos of all species. Inverse beta decay in the star's hydrogen envelope cause…
Stellar Neutrino Emission Across The Mass-Metallicity Plane
Ebraheem Farag, F. X. Timmes, Morgan T. Chidester +2
We explore neutrino emission from nonrotating, single star models across six initial metallicities and seventy initial masses from the zero-age main sequence to the final fate. Ove…
Presupernova neutrinos: directional sensitivity and prospects for progenitor identification
Mainak Mukhopadhyay, Cecilia Lunardini, F. X. Timmes +1
We explore the potential of current and future liquid scintillator neutrino detectors of O (10) kt mass to localize a pre-supernova neutrino signal in the sky. In the hours precedi…
The Impact of Nuclear Reaction Rate Uncertainties On The Evolution of Core-Collapse Supernova Progenitors
C. E. Fields, F. X. Timmes, R. Farmer +3
We explore properties of core-collapse supernova progenitors with respect to the composite uncertainties in the thermonuclear reaction rates by coupling the reaction rate probabili…
Modules for Experiments in Stellar Astrophysics (MESA): Convective Boundaries, Element Diffusion, and Massive Star Explosions
Bill Paxton, Josiah Schwab, Evan B. Bauer +10
We update the capabilities of the software instrument Modules for Experiments in Stellar Astrophysics (MESA) and enhance its ease of use and availability. Our new approach to locat…
Neutrinos from beta processes in a presupernova: probing the isotopic evolution of a massive star
Kelly M. Patton, Cecilia Lunardini, Robert J. Farmer +1
We present a new calculation of the neutrino flux received at Earth from a massive star in the hours of evolution prior to its explosion as a supernova (presupernova). Us…
On Variations Of Pre-Supernova Model Properties
R. Farmer, C. E. Fields, I. Petermann +4
We explore the variation in single star 15-30 , non-rotating, solar metallicity, pre-supernova MESA models due to changes in the number of isotopes in a fully-coupl…
Convective Properties of Rotating Two-Dimensional Core-Collapse Supernova Progenitors
Emmanouil Chatzopoulos, Sean M. Couch, W. David Arnett +1
We explore the effects of rotation on convective carbon, oxygen, and silicon shell burning during the late stages of evolution in a 20Msun star. Using the Modules for Experiments i…
Modules for Experiments in Stellar Astrophysics (MESA): Binaries, Pulsations, and Explosions
Bill Paxton, Pablo Marchant, Josiah Schwab +10
We substantially update the capabilities of the open-source software instrument Modules for Experiments in Stellar Astrophysics (MESA). MESA can now simultaneously evolve an intera…
The Three Dimensional Evolution to Core Collapse of a Massive Star
Sean M. Couch, Emmanouil Chatzopoulos, W. David Arnett +1
We present the first three dimensional (3D) simulation of the final minutes of iron core growth in a massive star, up to and including the point of core gravitational instability a…