A test of Radial Acceleration Relation for the Giles et al Chandra cluster sample

Pradyumna, S. and Desai, S. (2021) A test of Radial Acceleration Relation for the Giles et al Chandra cluster sample. Physics of the Dark Universe, 33. p. 100854. ISSN 22126864

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We carry out a test of the radial acceleration relation (RAR) for a sample of 10 dynamically relaxed and cool-core galaxy clusters imaged by the Chandra X-ray telescope, which was studied in Giles et al. (2016). For this sample, we observe that the best-fit RAR shows a very tight residual scatter equal to 0.09 dex. We obtain an acceleration scale of 1.59×10−9 m/s2, which is about an order of magnitude higher than that obtained for galaxies. Furthermore, the best-fit RAR parameters differ from those estimated from some of the previously analysed cluster samples, which indicates that the acceleration scale found from the RAR could be of an emergent nature, instead of a fundamental universal scale.

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IITH Creators:
IITH CreatorsORCiD
Desai, Shantanuhttp://orcid.org/0000-0002-0466-3288
Item Type: Article
Uncontrolled Keywords: Dark matter, Radial Acceleration Relation
Subjects: Physics
Divisions: Department of Physics
Depositing User: Mrs Haseena VKKM
Date Deposited: 09 Nov 2021 10:34
Last Modified: 18 Feb 2022 05:47
URI: http://raiith.iith.ac.in/id/eprint/8890
Publisher URL: https://linkinghub.elsevier.com/retrieve/pii/S2212...
OA policy: https://v2.sherpa.ac.uk/id/publication/24554
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