32 citations · 121 across the 19 of their papers we have counts for
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Radiation-Driven Origin of Super-Equipartition Magnetic Fields in Accretion Discs and Outflows
Mukesh Kumar Vyas, Asaf Pe'er
Magnetic fields play a central role in accretion physics around black holes, yet their physical origin within accretion flows remains an open problem. In this work, we investigate…
Generation of magnetic fields around black hole accretion discs due to non conservative radiation fields
Mukesh Kumar Vyas, Asaf Pe'er
We investigate the generation of magnetic fields above black hole accretion discs due to the non-zero curl of the disc radiation field. By self consistently computing the component…
Theory of photon scattering in shearing plasma: Applications to GRBs
Mukesh Kumar Vyas, Asaf Pe'er
We explore a new mechanism for photon energy gain in a relativistic plasma with velocity shear. This process takes place in optically thick plasma and resembles conventional Fermi…
Unified theory of negative and positive spectral lags in GRB prompt phase due to shear Comptonization from a structured jet
Mukesh Kumar Vyas, Asaf Pe'er, Shabnam Iyyani
Positive spectral lags are commonly observed in gamma-ray burst (GRB) prompt phase where soft photons lag behind hard ones in their spectral studies. Opposite to this pattern, a fr…
Optically thick jet base and explanation of edge brightening in AGN jets
Mukesh Kumar Vyas, Asaf Pe'er
The jet cores in blazars are resolved and found to harbour an edge brightened structure where the jet base appears extended at sides compared to its propagation axis. This peculiar…
Photon scattering in a relativistic outflow having velocity shear: a novel mechanism of generation for high energy power-law spectra
Mukesh Kumar Vyas, Asaf Pe'er
We show that an extragalactic jet with a velocity shear gives rise to Fermi like acceleration process for photons scattering withing the shear layers of the jet. Such photons then…