26–28 May 2025
Fletcher Landgoed Hotel Holthurnsche Hof
Europe/Amsterdam timezone

Radiative properties and multiwavelength variability of two-temperature MADs

Not scheduled
30m
Fletcher Landgoed Hotel Holthurnsche Hof

Fletcher Landgoed Hotel Holthurnsche Hof

Zevenheuvelenweg 48A, 6571 CK Berg en Dal

Speaker

Mr Maarten Wijdeveld (Radboud University)

Description

We investigate the radiative properties and multiwavelength variability of two-temperature black hole magnetically arrested disks (MADs) for two spins ($a_*=0\;\&\;0.94$). Using a Monte-Carlo approach, we compute full spectral energy distributions (SEDs), including synchrotron, inverse-Compton, and Bremsstrahlung radiative processes. Spectra are dominated by synchrotron and 1st-order Compton, resulting in a two-bump structure.
Past radio frequencies, all emission predominantly originates from regions close to the horizon, with no apparent time delay between different emission mechanisms. We extract light curves from the SEDs, which reveal significant fluctuations, with notable model-dependent variations in luminosity. We also find periodic features emerging from the variability analysis.

Talk category NOVA Network 3
Preference for a talk or poster Poster

Primary author

Mr Maarten Wijdeveld (Radboud University)

Co-authors

Mr Aristomenis Yfantis (Radboud University) Dr Monika Mościbrodzka (Radboud University)

Presentation materials

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