Search Results - "MAHAJAN, S. M"
-
1
Global Theory of Microtearing Modes in the Tokamak Pedestal
Published in Physical review letters (04-06-2021)“…The pedestal of H-mode tokamaks displays strong magnetic fluctuations correlated with the evolution of the electron temperature. The microtearing mode (MTM), a…”
Get full text
Journal Article -
2
Relativistic Plasma Polarizer: Impact of Temperature Anisotropy on Relativistic Transparency
Published in Physical review letters (08-07-2015)“…3D particle-in-cell simulations demonstrate that the enhanced transparency of a relativistically hot plasma is sensitive to how the energy is partitioned…”
Get full text
Journal Article -
3
Twisting space-time: relativistic origin of seed magnetic field and vorticity
Published in Physical review letters (27-08-2010)“…We demonstrate that a purely ideal mechanism, originating in the space-time distortion caused by the demands of special relativity, can break the topological…”
Get full text
Journal Article -
4
Classical perfect diamagnetism: expulsion of current from the plasma interior
Published in Physical review letters (22-02-2008)“…The vanishing of generalized helicity is shown to be the necessary and sufficient condition for a perfect conductor to display perfect diamagnetism, considered…”
Get full text
Journal Article -
5
Application of Double Beltrami states to solar eruptions
Published in Monthly notices of the Royal Astronomical Society (01-08-2010)“…We show that the general class of Double Beltrami (DB) states, which are the lowest energy equilibria of Hall magnetohydrodynamics, can have characteristics…”
Get full text
Journal Article -
6
Magnetic fluctuations and Hall magnetohydrodynamic turbulence in the solar wind
Published in Journal of Geophysical Research - Space Physics (01-11-2004)“…It is shown that the framework of Hall magnetohydrodynamics (Hall‐MHD), which can support three quadratic invariants and allows nonlinear states to depart…”
Get full text
Journal Article -
7
Existence of the Magnetorotational Instability
Published in The Astrophysical journal (20-07-2008)“…By posing and solving a global axisymmetric eigenvalue problem on an infinite domain with modes vanishing at zero and infinity for a differentially rotating…”
Get full text
Journal Article -
8
Temperature-transformed "minimal coupling": magnetofluid unification
Published in Physical review letters (24-01-2003)“…The dynamics of a relativistic, hot charged fluid is expressed in terms of a hybrid magnetofluid field which unifies the electromagnetic field with an…”
Get full text
Journal Article -
9
Variational principles and self-organization in two-fluid plasmas
Published in Physical review letters (04-03-2002)“…Self-organization of an ordered structure occurs in a plasma under rather restrictive conditions. A new framework for a variational principle invokes a…”
Get full text
Journal Article -
10
Fusion–Fission Transmutation Scheme—Efficient destruction of nuclear waste
Published in Fusion engineering and design (2009)“…A fusion-assisted transmutation system for the destruction of transuranic nuclear waste is developed by combining a subcritical fusion–fission hybrid assembly…”
Get full text
Journal Article -
11
Global Axisymmetric Magnetorotational Instability with Density Gradients
Published in The Astrophysical journal (10-05-2008)“…We examine global incompressible axisymmetric perturbations of a differentially rotating MHD plasma with radial density gradients. It is shown that the…”
Get full text
Journal Article -
12
Relativistic Petschek reconnection with pressure anisotropy in a pair-plasma
Published in Monthly notices of the Royal Astronomical Society (21-03-2010)“…Reconnection of magnetic field lines for a wide range of parameters in the relativistic regime is considered. A newly developed covariant fluid model for…”
Get full text
Journal Article -
13
Spectrum of Global Magnetorotational Instability in a Narrow Transition Layer
Published in The Astrophysical journal (01-06-2009)“…The global magnetorotational instability is investigated for a configuration in which the rotation frequency changes only in a narrow transition region. If the…”
Get full text
Journal Article -
14
Synchrotron emission from a nearby zone of Sgr A
Published in Monthly notices of the Royal Astronomical Society (01-05-2021)“…ABSTRACT Quasi-linear diffusion (QLD), driven by cyclotron instability, is proposed as a mechanism for the possible generation of synchrotron emission in the…”
Get full text
Journal Article -
15
Exact solution of the incompressible Hall magnetohydrodynamics
Published in Monthly notices of the Royal Astronomical Society. Letters (01-05-2005)“…The Alfvén wave is known to be an exact solution of the ideal magnetohydrodynamics (MHD), and this has found use in modelling astrophysical turbulence. In this…”
Get full text
Journal Article -
16
Super X divertors for solving heat and neutron flux problems of fusion devices
Published in Fusion engineering and design (2010)“…We present a new magnetic geometry, called the Super X divertor (SXD), that could potentially solve the enormous heat exhaust problem of next-generation high…”
Get full text
Journal Article -
17
On the relaxed states in the mixture of degenerate and non-degenerate hot plasmas of astrophysical objects
Published in Astrophysics and space science (01-09-2019)“…It is shown that a small contamination of a relativistically hot electron component can induce a new scale (for structure formation) to a system consisting of…”
Get full text
Journal Article -
18
Radiation reaction and relativistic hydrodynamics
Published in Physical review. E, Statistical, nonlinear, and soft matter physics (01-05-2004)“…By invoking the radiation reaction force, first perturbatively derived by Landau and Lifschitz, and later shown by Rohrlich to be exact for a single particle,…”
Get full text
Journal Article -
19
Self-organization in foliated phase space: Construction of a scale hierarchy by adiabatic invariants of magnetized particles
Published in Progress of theoretical and experimental physics (01-07-2014)“…Adiabatic invariants foliate phase space, and impart a macro-scale hierarchy by separating microscopic variables. On a macroscopic leaf, long-scale ordered…”
Get full text
Journal Article -
20
Mechanisms for multi-scale structures in dense degenerate astrophysical plasmas
Published in Astrophysics and space science (01-02-2016)“…Two distinct routes lead to the creation of multi-scale equilibrium structures in dense degenerate plasmas, often met in astrophysical conditions. By analyzing…”
Get full text
Journal Article