Response to reviewer 1.

Abstract

Comments on manuscript "Investigation of the ionospheric absorption response to flare events during the solar cycle 23 as seen by European and South African ionosondes"The analysis of the absorption induced by the solar flares was performed in this paper. The ionosonde data located at different latitudes were considered. The methods of the fmin and dfmin were applied.

Effect of viscosity and thermal conductivity on the radial oscillation and relaxation of relativistic stars

“…The present paper, together with its accompanying paper [28], is part of a more extensive body of work investigating the radial oscillations of neutron stars affected by the viscosity and thermal conductivity of cold nuclear matter that brings about damping of stellar oscillations and directly determine a minimum period of observable pulsars. The separation of the analytical and numerical aspects of study into two distinct papers was felt desirable, partly in order to not to divert attention from the details of each respective aspect, partly for the inherently different approaches involved.…”

“…Conversely, the numerical solution of the eigenvalue problem is considered in the accompanying paper [28]. The SLEVP for the radial oscillation modes of stars is converted to a system of finite difference equations where we implement a second-order accurate differencing scheme so the resulting system of finite difference equations emerges as a tridiagonal matrix eigenvalue problem.…”