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Adding stars to the McFACTS AGN compact binary formation model

ORAL

Abstract

Stars can be captured by, or formed in, the accretion disks that power active galactic nuclei (AGN) in the centers of massive galaxies. Such stars become embedded in a dense gas disk together with compact objects such as black holes and neutron stars. These disks are a rich environment for stellar mass objects to interact, accrete disk gas, form binaries, and merge. AGN are a promising source of gravitational wave (GW) events observed with the LIGO-Virgo-KAGRA (LVK) detector network. Stars may also experience extremely high accretion rates, which can result in supernovae, and formation of massive black holes. Massive stars embedded in the inner radius of the AGN disk inspiral into the central SMBH, detectable as Tidal Disruption Events (TDEs) with Rubin Obsevatory and could even generate mHz GW bursts detectable with the LISA detector. We present preliminary results using an extension of the new population synthesis code Monte Carlo For AGN Channel Testing and Simulation (McFACTS), which incorporates stars into the disk population. McFACTS is the first public, open source population synthesis code to simulate and test the full AGN channel for binary black hole mergers detectable with LVK and LISA.

Publication: Nathaniel, K., Ford, K.E.S., McKernan, B., Cook, H.E., Delfavero, V., Postiglione, J., Ray, R., O'Shaughnessy, R. McFACTS IV: The impact of stars on the LVK AGN channel. (planned)

Presenters

  • Kaila Nathaniel

    Rochester Institute of Technology

Authors

  • Kaila Nathaniel

    Rochester Institute of Technology

  • K. E. Saavik Ford

    AMNH

  • Barry McKernan

    The Graduate Center, City University of New York

  • Harrison E Cook

    New Mexico State University

  • Vera E Delfavero

    NASA Goddard Space Flight Center

  • Jake Postiglione

    The Graduate Center, City University of New York

  • Shawn Ray

    The Graduate Center, City University of New York

  • Richard W O'Shaughnessy

    Rochester Institute of Technology