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 Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

3A 1954+319 has been classified for a long time as a symbiotic X-ray binary,hosting a slowly rotating neutron star and an aged M red giant. Recently, thisclassification has been revised thanks to the discovery that the donor star isan M supergiant. This makes 3A 1954+319 a rare type of high mass X-ray binaryconsisting of a neutron star and a red supergiant donor. In this paper, weanalyse two archival and still unpublished XMM-Newton and NuSTAR observationsof the source. We perform a detailed hardness ratio-resolved spectral analysisto search for spectral variability that could help investigating the structuresof the inhomogeneous M supergiant wind from which the neutron star isaccreting. We discuss our results in the context of wind-fed supergiant X-raybinaries and show that the newest findings on 3A 1954+319 reinforce thehypothesis that the neutron star in this system is endowed with a magnetar-likemagnetic field strength ($\gtrsim10^{14}$ G).

monthly notices of the royal astronomical society

Accretion of a clumped wind from a red supergiant donor onto a magnetar  is suggested by the analysis of the XMM-Newton and NuSTAR observations of the  X-ray binary 3A 1954+319