Accès ouvert
2026
article
OpenAlex
M. E. Ramos-Ceja, G. Lamer, M. Salvato, A. Merloni et autres
The eROSITA telescope array on board the Spektrum-Roentgen-Gamma (SRG) mission began its all-sky survey program in December 2019, scanning the sky at an approximately six-month cadence. Here, we present new catalogues of point-like and extended X-ray sources derived from the first three …
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Accès ouvert
2026
article
OpenAlex
P. Weber, T. P. Roberts, S. Hämmerich, E. Kyritsis et autres
Context . Ultraluminous X-ray sources (ULXs) are luminous non-nuclear X-ray point sources embedded in galaxies. Their luminosities exceeding 10 39 erg s −1 potentially require sub-Eddington accretion by objects with masses from ∼10 2 M ⊙ to ∼10 4 M ⊙ or …
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Accès ouvert
2026
article
OpenAlex
S. Falkner, E. Sokolova-Lapa, F.-W. Schwarm, T. Dauser et autres
Context. Accretion-powered X-ray pulsars show complex spectral and timing behavior that reflects the extreme conditions near the neutron star. Modeling these observables remains challenging, particularly at high mass-accretion rates, Ṁ ≳ 10 17 g s −1 , where the extended accretion column …
de, us, au, ch, it, sk, es, nl
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Accès ouvert
2026
article
OpenAlex
S. Falkner, E. Sokolova-Lapa, F.-W. Schwarm, M. Bissinger et autres
Context. Modeling the observed emission from highly magnetized accreting neutron stars is essential for interpreting their X-ray spectra and variability. This task is challenging due to the dynamic, multidimensional nature of the accretion columns and the strong gravitational field. Radiation propagation outside …
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