Reply to the claim by van Dokkum et al. for a galaxy not containing dark matter

TL;DR

This paper critically examines van Dokkum et al.'s claim of a galaxy lacking dark matter, arguing that their conclusion is not tenable and challenging the implications for dark matter and modified gravity theories.

Contribution

It provides a critical analysis of the claim that NGC1052-DF2 contains no dark matter, refuting its validity and implications.

Findings

The claim of a dark matter-free galaxy is untenable.

The analysis challenges the implications for Newtonian dynamics and dark matter.

The paper defends the presence of dark matter in NGC1052-DF2.

Abstract

The following is a short comment on the recent claim made by van Dokkum and collaborators about the existence of a low surface brightness galaxy, NGC1052-DF2, not containing dark matter. A discovery used by the authors to both reject proposals of a failure of Newtonian dynamics in the low acceleration regime (e.g., MOND), and prove the dark matter hypothesis is correct. It is shown here that the claim in untenable.