7 papers · 1 filter
Chemical enrichment of metal-poor stars orbiting massive black hole companions
Alejandra Rosselli-Calderon, Julia Stewart, Sijing Shen +3
There are millions of undetected black holes wandering through our galaxy. Observatories like {\it Chandra}, LIGO, and more recently, {\it Gaia}, have provided valuable insights in…
Black Hole Survival Guide: Searching for Stars in the Galactic Center That Endure Partial Tidal Disruption
Rewa Clark Bush, Samantha C. Wu, Rosa Wallace Everson +3
Once per 10,000-100,000 years, an unlucky star may experience a close encounter with a supermassive black hole (SMBH), partially or fully tearing apart the star in an exceedingly b…
Stellar distributions around supermassive black holes in gas-rich nuclear star clusters
Mor Rozner, Enrico Ramirez-Ruiz
We study the stellar distribution around supermassive black holes (SMBHs) in gas-rich nuclear star clusters (NSCs). NSCs could contain vast amounts of gas, which contribute signifi…
Evolution of the ZTF SLRN-2020 star-planet merger
Ricardo Yarza, Morgan MacLeod, Benjamin Idini +2
We model the optical and infrared transient ZTF SLRN-2020, previously associated with a star-planet merger. We consider the scenario in which orbital decay via tidal dissipation le…
Perturbing AGN Accretion Disks with Stars and Moderately Massive Black Holes: Implications for Changing-Look AGN and Quasi-Periodic Eruptions
Sierra A. Dodd, Xiaoshan Huang, Shane W. Davis +1
We present a model that explains some extreme variability phenomena observed in active galactic nuclei (AGN). In this model, an orbiting companion interacts with the accretion disk…
Disk draining in LIGO progenitor black hole binaries and its significance to electromagnetic counterparts
Xiaoshan Huang, Sierra Dodd, Sophie Lund Schrøder +2
The effect of tidal forces on transport within a relic accretion disk in binary black holes is studied here with a suite of two-dimensional hydrodynamic simulations. As the binary…