6 papers
GRMHD accretion beyond the black hole paradigm: Light from within the shadow
Saurabh, Maciek Wielgus, Parth Bambhaniya +3
We present the first three-dimensional general relativistic magnetohydrodynamic simulation of sustained accretion onto a horizonless singularity in which matter reaches the central…
Shadow Formation Conditions Beyond the Kerr Black Hole Paradigm
Parth Bambhaniya, Saurabh, Elisabete M. de Gouveia Dal Pino
A compact object illuminated by background radiation produces a dark silhouette. The edge of the silhouette or shadow (alternatively, the apparent boundary or the critical curve) i…
Effective Viscosity in the Intracluster Medium During Magnetic Field Amplification via Turbulent Dynamo
S. Adduci Faria, R. Santos-Lima, E. M. de Gouveia Dal Pino
Galaxy clusters host a hot, diffuse plasma with poorly understood viscosity and magnetic field amplification. Astrophysical plasmas are often modeled with magnetohydrodynamics (MHD…
Time Delay of Pulsar Signals in Astrophysical Black Hole Spacetimes
Parth Bambhaniya, Viraj Kalsariya, Saurabh +4
In this paper, we investigate the fully relativistic time delay of pulsar signals propagating in the vicinity of a rotating black hole and its potential mimickers, including a defo…
Galactic transient sources with the Cherenkov Telescope Array Observatory
Cherenkov Telescope Array Observatory Consortium
A wide variety of Galactic sources show transient emission at soft and hard X-ray energies: low- and high-mass X-ray binaries containing compact objects, isolated neutron stars exh…
Particle acceleration by turbulent-driven magnetic reconnection and the production of gamma-rays and neutrinos in AGNs
E. M. de Gouveia Dal Pino, J. C. Ramirez-Rodriguez, T. Medina-Torrejon +2
3D Magnetohydrodynamic (MHD) resistive simulations have highlighted the significance of ubiquitous turbulence to drive fast reconnection. It has been demonstrated that particle acc…