English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Tools annual

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools monthly

Global: Zendy Plus monthly

Presents the access of premium content as premium feature

Premium Content

Global: Zendy Plus annual

Global: Zendy Free Plan

By performing 2.5-dimensional general relativistic radiationmagnetohydrodynamic simulations, we demonstrate supercritical accretion onto anon-rotating, magnetized neutron star, where the magnetic field strength ofdipole fields is $10^{10}$ G on the star surface. We found the supercriticalaccretion flow consists of two parts; the accretion columns and the truncatedaccretion disk. The supercritical accretion disk, which appears far from theneutron star, is truncated at around $\sim 3R_*$ ($R_*=10^6$ cm is the neutronstar radius), where the magnetic pressure via the dipole magnetic fieldsbalances with the radiation pressure of the disks. The angular momentum of thedisk around the truncation radius is effectively transported inward throughmagnetic torque by dipole fields, inducing the spin up of a neutron star. Theevaluated spin up rate, $\sim -10^{-11}$ s s$^{-1}$, is consistent with therecent observations of the ultra luminous X-ray pulsars. Within the truncationradius, the gas falls onto neutron star along dipole fields, which results in aformation of accretion columns onto north and south hemispheres. The netaccretion rate and the luminosity of the column are $\sim 66L_{\rm Edd}/c^2$and $\lesssim 10L_{\rm Edd}$, where $L_{\rm Edd}$ is the Eddington luminosityand c is the light speed. Our simulations support a hypothesis whereby theultra luminous X-ray pulsars are powered by the supercritical accretion ontothe magnetized neutron stars.

the astrophysical journal. letters

General relativistic radiation magnetohydrodynamics simulations of  supercritical accretion onto magnetized neutron star; -modeling of ultra  luminous x-ray pulsars