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«A Microquasar Odyssey: Unveiling the Complexities»

15–19 Sept 2025
Cefalù (Palermo)
Europe/Rome timezone

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Session

Wind (Observation, Theory and modelling)

16 Sept 2025, 09:00
Palazzo Municipale - Sala delle Capriate (Cefalù (Palermo))

Palazzo Municipale - Sala delle Capriate

Cefalù (Palermo)

Cefalù (Palermo)

Conveners

Wind (Observation, Theory and modelling)

  • pierre-olivier petrucci (Institute of Planetary science and Astrophysics of Grenoble)

Presentation materials

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  1. 128. Towards a Broader View of Accretion Disc Winds in X-ray Binaries
    Dr Teo Muñoz-Darias (Instituto de Astrofisica de Canarias)
    16/09/2025, 09:00
    Invited talk
    Invited talk

    Accreting stellar-mass black holes in X-ray binaries offer a unique opportunity to study black hole accretion in relatively clean environments and on human-accessible timescales—much shorter than those typical of AGN and quasars. Over the past few decades, the coupling between accretion and ejection processes in these systems has been extensively investigated, primarily through X-ray and radio...

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  2. 129. Winds Theory and Modeling: Characteristics and Spectral Signatures
    Keigo Fukumura (James Madison University)
    16/09/2025, 09:30
    Invited talk
    Invited talk

    Powerful ionized winds are often observed during episodic outbursts in black hole X-ray binaries (aka. microquasars). Focused on X-ray band, the observed highly ionized absorbers of multiple ions are thought to be launched and accelerated from an accretion disk by some means. The current disk wind theory suggests multiple driving mechanisms with distinct characteristics, which may well...

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  3. 126. Ultra-fast outflows in the black hole candidate MAXI J1810-222
    Dr Ciro Pinto (Istituto Nazionale di Astrofisica (INAF))
    16/09/2025, 10:00
    Talk
    Talk

    The X-ray transient MAXI J1810-222 was discovered in 2018 and has been active ever since. A deep, ongoing, multiwavelength monitoring campaign suggests a black hole accretor, although the unusual outburst behaviour. Through a NICER monitoring we detected a strong spectral absorption feature around 1 keV which can be described with a photoionised absorber. A deep scan of the parameters space...

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  4. 59. Modelling wind signatures in the optical and infrared spectrum of XRBs
    Alessandra Ambrifi (Instituto de Astrofísica de Canarias)
    16/09/2025, 10:15
    Talk
    Talk

    Accretion disc winds are thought to play a significant role in shaping the outbursts of X-ray binaries (XRBs) by extracting mass and momentum from these systems. The study of cold, low-ionisation winds, detected through hydrogen and helium lines at optical and infrared (OIR) wavelengths, has recently provided substantial insights into their properties. The analysis of the optically thick wind...

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  5. 114. Tracking outflows evolution across spectral states of the black hole X-ray binary MAXI J1820+070
    Marco Maria Messa (Istituto Nazionale di Astrofisica (INAF))
    16/09/2025, 10:30
    Talk
    Talk

    In this talk, I will present a study of the optical counterpart of the black hole X-ray binary MAXI J1820+070 during its main 2018 outburst and subsequent three reflares. The goal is to track the evolution of outflows across different spectral states and investigate the origin of minute-timescale optical variability. We collected high-cadence multi-filter optical light curves using the Las...

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