Neutrino Spectra from Accretion Disks: Neutrino General Relativistic Effects and the Consequences for Nucleosynthesis

TL;DR

This paper investigates how general relativistic effects on neutrino trajectories and energies emitted from black hole accretion disks influence nucleosynthesis, especially the r-process, in outflowing material.

Contribution

It introduces a detailed analysis of neutrino general relativistic effects on nucleosynthesis, considering null geodesics and energy shifts for different disk models.

Findings

Neutrino trajectory bending significantly affects nucleosynthesis outcomes.

Energy shifts due to relativistic effects alter neutrino fluxes impacting element formation.

Relativistic effects are crucial for accurate nucleosynthesis predictions in black hole accretion disks.

Abstract

Black hole accretion disks have been proposed as good candidates for a range of interesting nucleosynthesis, including the r-process. The presence of the black hole influences the neutrino fluxes and affects the nucleosynthesis resulting from the interaction of the emitted neutrinos and hot outflowing material ejected from the disk. We study the impact of general relativistic effects on the neutrinos emitted from black hole accretion disks. We present abundances obtained by considering null geodesics and energy shifts for two different disk models. We find that both the bending of the neutrino trajectories and the energy shifts have important consequences for the nucleosynthetic outcome