7 papers
Supermassive black holes in six triaxial galaxies: Insights from SINFONI and MUSE observations
Sabine Thater, Avinash Chaturvedi, Davor Krajnovic +5
Dynamical modelling can be used to constrain the masses of central black holes; however, modelling massive galaxies is challenging due to their complexity. In this work, we report…
How Overmassive Black Holes Formed at Cosmic Dawn
Muhammad A. Latif, Daniel J. Whalen, Sadegh Khochfar +1
Overmassive black hole galaxies (OBGs) at redshifts 10, or 450 Myr after the Big Bang, are one of the most puzzling discoveries by the James Webb Space Telescope to date b…
Impact of subhalo dynamical friction heating on the formation of the first structures in the universe
Zhenyu Wu, Sadegh Khochfar, Muhammad A. Latif +2
We present a model for gas heating, driven by dynamical friction from orbiting subhalos within dark matter halos. Using data from the TNG50 simulation, we derive the subhalo mass f…
Clustering effects on the Dark Siren determination of : A simulation study
Marios Kalomenopoulos, Riccardo Barbieri, Sadegh Khochfar +2
Gravitational waves (GWs) offer an alternative way to measure the Hubble parameter. The optimal technique, the ``bright siren'' approach, requires the identification of an electrom…
Gaseous Dynamical Friction: a Numerical Study of Extended Perturbers
Ben Morton, Sadegh Khochfar, Jose Oñorbe
The process of momentum and energy transfer between a massive body and a background medium it is moving through is known as dynamical friction (DF). It is key to our understanding…
Conditions for Super-Eddington Accretion onto the First Black Holes
Simone T. Gordon, Britton D. Smith, Sadegh Khochfar +1
Observations of supermassive black holes at high redshift challenge our understanding of the evolution of the first generation of black holes (BHs) in proto-galactic environments.…