Feeding the spinning top - Accretion-induced torques onto young and strongly magnetized neutron stars in high-mass X-ray binaries

Session

1b

Mar 3, 2025, 3:00 PM

IFCA/P0-024 - Sala Luis Pesquera (Sala de Claustro) (IFCA Building)

12. A detailed spectral-timing NUSTAR view of the HMXB 4U 1901+03

Elena Ambrosi (INAF IASF-PA)

The spectral emission of accreting X-ray pulsars is complex due to their non-isotropic nature and the inclination of the line of sight with respect to the geometry of the system, which influences the observed phase variability at the spin frequency. Recently, Ferrigno et al. (2023) introduced a method to compute pulsed profiles with the energy resolution of the NuSTAR satellite, enabling...

19. Spectral and timing signatures in (Be) High-Mass x-ray binaries

Carlo Ferrigno (University of Geneva)

Session 1b

The basic picture of what forms the pulsed X-ray emission in strongly magnetized accreting pulsars is understood since decades, but the wealth of current data greatly exceeds our ability to model them.

HMXB are variable on many timescales, from spin, to orbit, arriving to super-orbital modulations. Variability on time scales above the spin period is instrumental to explore the accretion...

10. The peculiar pulsed fraction spectra of V0332+53: hints for complex cyclotron line shape

Antonino D'Aì (INAF/IASFPA)

Pulse profiles of X-ray pulsars are invaluable tools for understanding emission mechanisms, system geometry, and radiation transfer under extreme conditions. By extracting energy-dependent pulse profiles Ferrigno (2023) showed how the changes in the pulse shape at energies corresponding to the cyclotron resonance scattering features, provide a quantitative way of determining the feature main...