Comments on 'Controversy on a Dispersion Relation for MHD Waves' by Chandra and Kumthekar

TL;DR

This paper critically examines the derivation of a dispersion relation for MHD waves by Chandra and Kumthekar, highlighting methodological issues and questioning their conclusions.

Contribution

It provides a detailed critique of CK's derivation process, emphasizing the importance of proper mathematical procedures in MHD wave analysis.

Findings

CK's derivation lacks the use of vector space concepts.

The elimination of perturbation terms is not properly justified.

The resulting damped magnetoacoustic waves are questionable.

Abstract

We comment on the work by Chandra and Kumthekar (2007, henceforth CK) which is questionable. In the derivation of dispersion relation, CK neither invoke the concept of vector space nor do they follow the basic criterion for the elimination of perturbation terms under which the damped magnetoacoustic waves are derived.