Discovery of spin-phase-dependent QPOs in the supercritical accretion regime from the X-ray pulsar RX J0440.9+4431

RX J0440.9+4431 is an accreting X-ray pulsar (XRP) that remained relatively unexplored until recently, when major X-ray outburst activity enabled more in-depth studies. Here, we report on the discovery of ~0.2 Hz quasi-periodic oscillations (QPOs) from this source observed with Fermi -GBM. The appea...

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Veröffentlicht in:	Astronomy and astrophysics (Berlin) 2024-01, Vol.681, p.A25
Hauptverfasser:	Malacaria, Christian, Huppenkothen, Daniela, Roberts, Oliver J., Ducci, Lorenzo, Bozzo, Enrico, Jenke, Peter, Wilson-Hodge, Colleen A., Falanga, Maurizio
Format:	Artikel
Sprache:	eng
Online-Zugang:	Volltext
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