Nico Winkel: Resolving the Black Hole Mass - Host Galaxy Scaling Relations in AGNs

Thursday, 25 April 2024 2 p.m. — 3 p.m. MST

Gemini North Hilo Base Facility | 670 N A’ohoku Place Hilo, Hawaii, 96720, USA

Gemini North Talks
Nico Winkel (Max-Planck-Institute for Astronomy, Heidelberg, Germany)

The masses of the supermassive black holes in AGNs can be determined by resolving the BH sphere of influence in time via reverberation mapping (RM). The resulting relationship between the broad-line region (BLR) radius and AGN luminosity serves as a baseline for measuring black hole mass (MBH) across the entire Universe. For an increasing number of nearby AGNs, high signal-to-noise and high cadence RM data provide insights into the BLR geometry and kinematics. By combining these independent MBH measurements with new spatially-resolved measurements of the host galaxy kinematics, this enables us to constrain the MBH-host galaxy scaling relations with unprecedented resolution. In this talk, I will present a novel spatially-resolved calibration of the MBH-σ relation for the sample of AGNs with dynamically modelled MBH. I will quantify the biases that arise from different aperture sizes, host galaxy morphologies, and AGN luminosities, and constrain the intrinsic scatter of the MBH-σ relation inherent to the local AGN population.

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