Filtern
Volltext vorhanden
- nein (1)
Erscheinungsjahr
- 2021 (1) (entfernen)
Dokumenttyp
- Wissenschaftlicher Artikel (1) (entfernen)
Sprache
- Englisch (1)
Gehört zur Bibliographie
- ja (1) (entfernen)
Schlagworte
- stars: neutron (1) (entfernen)
Institut
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, this classification has been revised thanks to the discovery that the donor star is an M supergiant. This makes 3A 1954+319 a rare type of high-mass X-ray binary consisting of a neutron star and a red supergiant donor. In this paper, we analyse two archival and still unpublished XMM-Newton and NuSTAR observations of the source. We perform a detailed hardness ratio-resolved spectral analysis to search for spectral variability that could help investigating the structures of the inhomogeneous M supergiant wind from which the neutron star is accreting. We discuss our results in the context of wind-fed supergiant X-ray binaries and show that the newest findings on 3A 1954+319 reinforce the hypothesis that the neutron star in this system is endowed with a magnetar-like magnetic field strength (greater than or similar to 10(14) G).