8 papers
Temporal Variation of the Coronal Radius Parameter in a Jetted Tidal Disruption Event: Swift J1644+57
Arka Chatterjee, Kimitake Hayasaki, Prantik Nandi +5
Tidal Disruption Events are exotic astrophysical phenomena where matter from a star or the interstellar medium is captured by a supermassive black hole. The process liberates enorm…
Spectral Properties of Irradiated Circumbinary Disks around Binary Black Holes Governed by Hydrogen Opacities Dependent on Temperature and Density
Saemi Bang, Atsuo T. Okazaki, Kimitake Hayasaki
We study the thermal and spectral properties of irradiated circumbinary disks (CBDs) around binary black holes (BBHs), using analytic, hydrogen-based opacity models that capture de…
Stellar Stripping and Disruption in Disks around Supermassive Black Hole Binaries: Repeating nuclear transients prior to LISA events
Daniel J. D'Orazio, Christopher Tiede, Lorenz Zwick +2
If supermassive black hole binaries (SMBHBs) are driven together by gas disks in galactic nuclei, then a surrounding nuclear star cluster or in-situ star-formation should deliver s…
Mass Determination of Supermassive Black Holes Governing Evolution of Radio Emitters
Kimitake Hayasaki, Ryo Yamazaki
Tidal disruption events (TDEs) involving supermassive black holes (SMBHs) often exhibit radio emission, yet its physical origin remains uncertain, especially in non-jetted cases. I…
Self-Similar Solutions for Geometrically Thin Accretion Disks with Magnetically Driven Winds: Application to Tidal Disruption Events
Mageshwaran Tamilan, Kimitake Hayasaki, Takeru K. Suzuki
We analytically derive self-similar solutions for a time-dependent, one-dimensional, magnetically driven accretion-disk-wind model based on the magnetohydrodynamic equations. The m…
Radio emission from tidal disruption events produced by the collision between super-Eddington outflows and the circumnuclear medium
Fangyi, Hu, Adelle Goodwin +4
In this Letter, we simulate the collision between outflows from the tidal disruption of a 1M main sequence star around a M black hole and an initially spheric…