Comment on "Locating the source field lines of Jovian decametric radio emissions" by YuMing Wang et al

TL;DR

This comment critiques a method for locating Jovian decametric radio emission sources, highlighting an error in hemisphere identification and urging reanalysis with correct data and broader samples.

Contribution

It challenges previous assumptions and results, emphasizing the need for accurate hemisphere identification and testing on larger datasets in Jovian radio emission studies.

Findings

Incorrect hemisphere identification in the original analysis

Need for reanalysis with correct source hemisphere

Recommendation to test on larger emission samples

Abstract

In this comment of the article [arXiv:2002.01150] "Locating the source field lines of Jovian decametric radio emissions" by YuMing Wang et al., 2020, we discuss the assumptions used by the authors to compute the beaming angle of Jupiter s decametric emissions induced by the moon Io. Their method, relying on multi-point radio observations, was applied to a single event observed on 14th March 2014 by Wind and both STEREO A/B spacecraft from 5 to 16 MHz, and erroneously identified as a northern emission (Io-B type) instead of a southern one (Io-D type). We encourage the authors to update their results with the right hemisphere of origin and to test their method on a larger sample of Jupiter-Io emissions.