Beamed Emission from a Neutron-star ULX in a GRRMHD Simulation

Abarca, David and Parfrey, Kyle and Kluźniak, Włodek (2021) Beamed Emission from a Neutron-star ULX in a GRRMHD Simulation. The Astrophysical Journal Letters, 917 (2). L31. ISSN 2041-8205

[thumbnail of Abarca_2021_ApJL_917_L31.pdf]

Text
Abarca_2021_ApJL_917_L31.pdf - Published Version
Download (716kB)

Official URL: https://doi.org/10.3847/2041-8213/ac1859

Abstract

We perform a global 2.5D general-relativistic radiation magnetohydrodynamic simulation of supercritical accretion onto a neutron star with a 2 × 1010 G dipolar magnetic field, as a model of a neutron-star-powered ultraluminous X-ray source (ULX). We compute a lower limit on the total luminosity of ∼2.5 LEdd, and find the radiation to be highly beamed by the accretion disk outflows. The apparent isotropic luminosity, which is a function of the viewing angle, reaches a maximum above 100 LEdd, consistent with the luminosities observed in ULXs.

Item Type:	Article
Subjects:	East Asian Archive > Physics and Astronomy
Depositing User:	Unnamed user with email support@eastasianarchive.com
Date Deposited:	09 May 2023 08:55
Last Modified:	14 Aug 2025 03:32
URI:	http://authors.go2articles.com/id/eprint/686

Actions (login required)

: View Item