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The radial acceleration relation and its emergent nature

Published online by Cambridge University Press:  29 March 2021

Davi C. Rodrigues Open the ORCID record for Davi C. Rodrigues [Opens in a new window]  and
Valerio Marra
Davi C. Rodrigues
Affiliation:
Núcleo de Astrofísica e Cosmologia, PPGCosmo & Departamento de Física, Universidade Federal do Espírito Santo, 29075-910, ES, Brazil emails: davi.rodrigues@cosmo-ufes.org, marra@cosmo-ufes.org
Valerio Marra
Affiliation:
Núcleo de Astrofísica e Cosmologia, PPGCosmo & Departamento de Física, Universidade Federal do Espírito Santo, 29075-910, ES, Brazil emails: davi.rodrigues@cosmo-ufes.org, marra@cosmo-ufes.org
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Abstract

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We review some of our recent results about the Radial Acceleration Relation (RAR) and its interpretation as either a fundamental or an emergent law. The former interpretation is in agreement with a class of modified gravity theories that dismiss the need for dark matter in galaxies (MOND in particular). Our most recent analysis, which includes refinements on the priors and the Bayesian test for compatibility between the posteriors, confirms that the hypothesis of a fundamental RAR is rejected at more than 5σ from the very same data that was used to infer the RAR.

Keywords

galaxies: kinematics and dynamicsdark mattergravitation
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 15 , Symposium S359: Galaxy Evolution and Feedback across Different Environments , March 2019 , pp. 457 - 459
Copyright
© The Author(s), 2021. Published by Cambridge University Press on behalf of International Astronomical Union

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