9 papers
Polarization Signatures from GRMHD Simulations of Black Hole Accretion
P. Chris Fragile, Maciek Wielgus, Cora Prather
This chapter tells the still-unfolding story of extracting polarization signatures from general relativistic magnetohydrodynamics simulations of accretion disks. In some sense, thi…
The nature of tilted supercritical accretion discs
P. Chris Fragile, Matthew J. Middleton, Brooks Brasseur +2
In this paper, we report on the first 3D general relativistic radiation magnetohydrodynamic simulations of large supercritical accretion discs that are tilted with respect to the b…
Even a precessing clock is right twice per orbit -- The super-periods of eRO-QPE2 and challenges for quasi-periodic eruption orbital models
R. Arcodia, G. Miniutti, J. Chakraborty +25
We present OC (``observed minus calculated'') timing analysis of the quasi-periodic eruption (QPE) source eRO-QPE2 with a multi-mission X-ray campaign, which includes 32 observe…
Tilted, warped, and eccentric disks
P. Chris Fragile, Adam Ingram, Gibwa Musoke +1
We review some of the interesting consequences that tilts, warps, and eccentricities can introduce into the dynamics, thermodynamics, and observational appearance of accreting syst…
Misalignment of the Lense-Thirring precession by an accretion torque
D. A. Bollimpalli, J. Horák, W. Kluźniak +1
Orbiting matter misaligned with a spinning black hole undergoes Lense-Thirring precession, due to the frame-dragging effect. This phenomenon is particularly relevant for type-C QPO…
Polarization Signatures of Quasi-Periodic Oscillations in Simulated Tilted, Truncated Disks
P. Chris Fragile, Deepika A. Bollimpalli, Jeremy D. Schnittman +1
We utilize the Monte Carlo radiation transport code, Pandurata, to create images, spectra, polarization maps, and light curves from a set of general relativistic magnetohydrodynami…