Nagendra P. Singh

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— Integral expressions of electromagnetic (EM) field components due to a large circular loop source carrying an alternating (ac) current and placed on or above the surface of a layered earth model are transformed to such suitable forms that facilitate numerical computation of field response in quasi-static as well as non-quasi-static regions. The improper(More)
Electron current layers (ECLs) are the sites where magnetic reconnection initiates in a current sheet. Using three-dimensional particle-in-cell simulations, we study the plasma processes that occur in an ECL as it evolves rapidly over a short time scale much shorter than the ion cyclotron period. The processes include its thinning, generation of(More)
1 We are thankful to Dr. J. R. Wait for his interest in our paper. The point where Dr. Wait disagrees with us concerns the form of the diffusion equation in an inhomogeneous layered medium, when the source, a horizontal magnetic dipole, is oriented along the horizontal axes of the Cartesian coordinate system. We offer the following clarifications. i) The(More)
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