Vertical convection in neutrino-dominated accretion flows

TL;DR

This paper investigates how vertical convection influences the structure and luminosity of neutrino-dominated accretion flows around black holes, revealing increased neutrino emissions that could power gamma-ray bursts.

Contribution

It introduces the effects of vertical convection on NDAF structure and luminosity, highlighting its role in enhancing neutrino emissions.

Findings

Vertical convection suppresses radial advection in NDAF.

Density, temperature, and opening angle are slightly altered.

Neutrino and annihilation luminosities are increased.

Abstract

We present the effects of the vertical convection on the structure and luminosity of the neutrino-dominated accretion flow (NDAF) around a stellar-mass black hole in spherical coordinates. We found that the convective energy transfer can suppress the radial advection in the NDAF, and that the density, temperature and opening angle are slightly changed. As a result, the neutrino luminosity and annihilation luminosity are increased, which is conducive to achieve the energy requirement of gamma-ray bursts.