Changing-Look Inspirals: Trends and Switches in AGN Disk Emission as Signposts for Merging Black Hole Binaries

J Zrake, M Clyburn, S Feyan - arXiv preprint arXiv:2410.04961, 2024 - arxiv.org
Using grid-based hydrodynamics simulations and analytic modeling, we compute the
electromagnetic (EM) signatures of gravitational wave (GW) driven inspirals of massive …

Fragments of harmony amid apparent chaos: A closer look at the X-ray quasi-periodic eruptions of the galaxy RX J1301. 9+ 2747

M Giustini, G Miniutti, R Arcodia, A Goodwin… - Astronomy & …, 2024 - aanda.org
Quasi-periodic eruptions (QPEs) are an extreme X-ray variability phenomenon associated
with low-mass (M BH< 10 7 M⊙) supermassive black holes (SMBHs). First discovered in the …

Fast Methods for Computing Photometric Variability of Eccentric Binaries: Boosting, Lensing, and Variable Accretion

DJ D'Orazio, PC Duffell, C Tiede - The Astrophysical Journal, 2024 - iopscience.iop.org
We analyze accretion-rate time series for equal-mass binaries in coplanar gaseous disks
spanning a continuous range of orbital eccentricities up to 0.8 for both prograde and …

Self-lensing flares from black hole binaries IV: the number of detectable shadows

K Park, C Xin, J Davelaar, Z Haiman - arXiv preprint arXiv:2409.04583, 2024 - arxiv.org
Sub-parsec supermassive black hole (SMBH) binaries are expected to be common in active
galactic nuclei (AGN), as a result of the hierarchical build-up of galaxies via mergers. While …

A Parameter Study of the Electromagnetic Signatures of an Analytical Mini-Disk Model for Supermassive Binary Black Hole Systems

K Porter, SC Noble, EM Gutierrez, J Pelle… - arXiv preprint arXiv …, 2024 - arxiv.org
Supermassive black holes (SMBHs) are thought to be located at the centers of most galactic
nuclei. When galaxies merge they form supermassive black hole binary (SMBHB) systems …