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GRMHD simulations of X-ray binaries in the hard state

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Author(s):
Pedro Naethe Motta
Total Authors: 1
Document type: Master's Dissertation
Press: São Paulo.
Institution: Universidade de São Paulo (USP). Instituto Astronômico e Geofísico (IAG/SBD)
Defense date:
Examining board members:
Rodrigo Nemmen da Silva; Adam Ingram; Reinaldo Santos de Lima; Alexander Tchekovskoy
Advisor: Rodrigo Nemmen da Silva
Abstract

Black hole X-ray binaries (XRBs) serve as essential astrophysical laboratories for investigating the physics of the accretion flows and black holes. These systems, composed of a black hole and a companion star, exhibit a variety of spectral states, offering a unique opportunity to study the accretion dynamics on shorter timescales when compared to supermassive black holes (SMBHs). In this work, we address the challenge of capturing the radiation processes within XRBs by presenting an implementation of a radiation prescription, which offers a lower computational cost compared to traditional radiative transfer codes, within the GPU-accelerated code \\code. Our approach incorporates a radiative solution that accounts for bremsstrahlung, synchrotron radiation, comptonized synchrotron, and coulomb collisions. Through extensive testing, we validate the functionality of our methodology. Our implementation provides a low-cost tool for investigating the properties and dynamics of black hole accretion flows in XRBs. (AU)

FAPESP's process: 21/01563-5 - Simulating black hole binaries
Grantee:Pedro Naethe Motta
Support Opportunities: Scholarships in Brazil - Master