27–29 May 2026
60 St. George St.
America/Toronto timezone
CITA at 40: A Celebration of Cosmic Discovery

Probing Bare Accretion Disks around Active Supermassive Black Holes

Not scheduled
20m
McLennan Physical Laboratories (60 St. George St.)

McLennan Physical Laboratories

60 St. George St.

University of Toronto, St. George Campus
Oral

Speaker

Doron Chelouche (University of Haifa)

Description

Some of the fundamental properties inferred for quasar accretion disks remain in apparent tension with theoretical predictions. I will show that much of the discrepancy concerning accretion-disk sizes and their emitted spectrum can be traced to a previously poorly constrained and under-appreciated contribution from diffuse, non-disk emission. Accounting for this component systematically alters how reverberation-mapping and microlensing measurements are interpreted, and substantially reduces the inferred tension between observed disk sizes and spectra and standard accretion-disk models.

Author

Doron Chelouche (University of Haifa)

Presentation materials

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