Title: A systematic study of proto-neutron star convection in three-dimensional core-collapse supernova simulations

Abstract

ABSTRACT This paper presents the first systematic study of proto-neutron star (PNS) convection in three dimensions (3D) based on our latest numerical fornax models of core-collapse supernova (CCSN). We confirm that PNS convection commonly occurs, and then quantify the basic physical characteristics of the convection. By virtue of the large number of long-term models, the diversity of PNS convective behaviour emerges. We find that the vigour of PNS convection is not correlated with CCSN dynamics at large radii, but rather with the mass of PNS − heavier masses are associated with stronger PNS convection. We find that PNS convection boosts the luminosities of νμ, ντ, $$\bar{\nu }_{\mu }$$, and $$\bar{\nu }_{\tau }$$ neutrinos, while the impact on other species is complex due to a competition of factors. Finally, we assess the consequent impact on CCSN dynamics and the potential for PNS convection to generate pulsar magnetic fields.

Authors:

Nagakura, Hiroki ^[1]; Burrows, Adam ^[1]; Radice, David  ^[2];

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Vartanyan, David ^[3]

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+ Show Author Affiliations

1. Department of Astrophysical Sciences, Princeton University, 4 Ivy Lane, Princeton, NJ 08544, USA
2. Department of Physics, The Pennsylvania State University, University Park, PA 16802, USA, Department of Astronomy & Astrophysics, The Pennsylvania State University, University Park, PA 16802, USA
3. Astronomy Department and Theoretical Astrophysics Center, University of California, Berkeley, CA 94720, USA

Publication Date:

2020-01-28

Sponsoring Org.:

USDOE

OSTI Identifier:

1598917

Grant/Contract Number:  

SC0018297; AC02-06CH11357; AC03-76SF00098

Resource Type:

Published Article

Journal Name:

Monthly Notices of the Royal Astronomical Society

Additional Journal Information:

Journal Name: Monthly Notices of the Royal Astronomical Society Journal Volume: 492 Journal Issue: 4; Journal ID: ISSN 0035-8711

Publisher:

Oxford University Press

Country of Publication:

United Kingdom

Language:

English