The many tones of accretion - to the memory of Tomaso Belloni

Session

Multi-wavelength, Jets & Winds. Session 3.4: MW Variability

9 Sept 2026, 17:15

Cefalù

23. Multiwavelength Variability from X-ray Binaries

Piergiorgio Casella (Istituto Nazionale di Astrofisica (INAF))

09/09/2026, 17:15

Talk

Fast multiwavelength variability is a key tool for studying the coupling between accretion flows and relativistic jets in X-ray binaries, providing unique insights into the physical processes governing jet launching and energy dissipation in the innermost regions around compact objects. In this talk, I will review the current observational and interpretative landscape, highlighting recent...

59. The peculiar variability of the Be/NS system 1A 0538-66

Dr Sandro Mereghetti (Istituto Nazionale di Astrofisica (INAF))

09/09/2026, 17:45

Talk

The source 1A 0538-66, located in the Large Magellanic Cloud, contains the fastest-spinning neutron star in an accreting X-ray binary and shows a combination of extreme properties unmatched in other NS/Be systems.
It is characterized by extraordinary multiwavelength variability, including sporadic episodes of seconds-long X-ray flares with a dynamic range >1000 and peak luminosities...

12. Probing black hole jets through rapid multi-wavelength timing techniques

Dr Alex Tetarenko (University of Lethbridge)

09/09/2026, 18:00

Talk

Black hole X-ray binaries are accreting objects that launch powerful relativistic jets. These systems evolve through bright outburst phases on timescales of days to months, allowing us to probe jet and accretion phenomena in real-time. As X-ray binaries produce highly variable emission, time-series observations can be a powerful tool to study these systems. However, as these systems emit...

7. Multi-band analysis of the pulsed profiles of the accreting millisecond pulsar SAX J1808.4-3658

Caterina Ballocco (Istituto Nazionale di Astrofisica (INAF))

09/09/2026, 18:15

SAX J1808.4-3658 is the prototype of accreting millisecond X-ray pulsars and the first of this class to show optical and UV pulsations during an accretion outburst. These pulsations challenge standard rotation- or accretion-powered scenarios and provide a unique window into the emission mechanisms of pulsating neutron stars.
I will present a multi-band timing study based on XMM-Newton,...