TL;DR
This paper assesses the impact of model-independent axions on graviton mass, finding negligible effects for GW150914 but potential significance for black hole mergers of around 2×10^{14} kg.
Contribution
It provides a model-independent analysis of axion contributions to graviton mass near black holes, highlighting conditions where effects could be detectable.
Findings
Negligible axion contribution for GW150914.
Possible axion effects at graviton mass of 10^{-22} eV for specific black hole mergers.
Identifies mass scales where axion influence on graviton mass becomes relevant.
Abstract
In this short comment, we notice that the model-independent axion contribution to the graviton mass at just outside the Schwarzschild radius is completely negligible in GW150914. The model-independent axion contribution to the graviton mass at the order eV might be possible for merger of black holes of mass of order kg.
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