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 Plus annual

Presents the access of premium content as premium feature

Premium Content

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 Plus monthly

Global: Zendy Tools annual

Global: Zendy Tools monthly

Global: Zendy Free Plan

We report the evidence for the anti-correlation between pulsed fraction (PF)and luminosity of the X-ray pulsar SXP 1323, found for the first time in aluminosity range $10^{35}$--$10^{37}$ erg s$^{-1}$ from observations spanning15 years. The phenomenon of a decrease in X-ray PF when the source fluxincreases has been observed in our pipeline analysis of other X-ray pulsars inthe Small Magellanic Cloud (SMC). It is expected that the luminosity under acertain value decreases as the PF decreases due to the propeller effect. Abovethe propeller region, an anti-correlation between the PF and flux might occureither as a result of an increase in the un-pulsed component of the totalemission or a decrease of the pulsed component. Additional modes of accretionmay also be possible, such as spherical accretion and a change in emissiongeometry. At higher mass accretion rates, the accretion disk could also extendcloser to the neutron star (NS) surface, where a reduced inner radius leads tohotter inner disk emission. These modes of plasma accretion may affect thechange in the beam configuration to fan-beam dominant emission.

Anti-correlation between X-ray luminosity and pulsed fraction in the Small Magellanic Cloud pulsar SXP 1323