Zobrazeno 1 - 10
of 32
pro vyhledávání: '"Vyas, Mukesh Kumar"'
Autor:
Vyas, Mukesh Kumar, Pe'er, Asaf
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 acceleration, where photons undergo multiple scatterings between regio
Externí odkaz:
http://arxiv.org/abs/2410.05089
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 fraction of GRBs show a negative spectral lag where hard photons arrive
Externí odkaz:
http://arxiv.org/abs/2410.04446
Autor:
Vyas, Mukesh Kumar, Pe'er, Asaf
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 phenomenon invites various explanations. We show that the photosphere
Externí odkaz:
http://arxiv.org/abs/2308.06728
Autor:
Vyas, Mukesh Kumar, Pe'er, Asaf
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 gain energy to produce a high energy power law. These power law spectr
Externí odkaz:
http://arxiv.org/abs/2306.01020
We propose a backscattering dominated prompt emission model for gamma-ray bursts (GRB) prompt phase in which the photons generated through pair annihilation at the centre of the burst are backscattered through Compton scattering by an outflowing stel
Externí odkaz:
http://arxiv.org/abs/2111.14163
Autor:
Vyas, Mukesh Kumar
We study the efficiency of radiation in driving jets around black holes. Including general relativity for the radiation driving, we also show that the radiation field is affected by strong gravitational field in non linear manner, making general rela
Externí odkaz:
http://arxiv.org/abs/2111.05171
We present new results of the backscattering dominated prompt emission model in which the photons generated through pair annihilation at the centre of a gamma ray burst (GRB) are backscattered through Compton scattering by an outflowing stellar cork.
Externí odkaz:
http://arxiv.org/abs/2103.06201
Akademický článek
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Autor:
Vyas, Mukesh Kumar
Polymer brushes provide the responsive smart surfaces which can be used for fabrication of various devices. In this thesis work, adhesion, friction, and wear of polystyrene (PS) - poly(2-vinyl pyridine) (P2VP) and polystyrene - poly(acrylic acid) (PA
Externí odkaz:
https://tud.qucosa.de/id/qucosa%3A23879
https://tud.qucosa.de/api/qucosa%3A23879/attachment/ATT-0/
https://tud.qucosa.de/api/qucosa%3A23879/attachment/ATT-0/
Akademický článek
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