Testing universal dark-matter caustic rings with galactic rotation curves

Infall of cold dark matter on a galaxy may result in caustic rings where the particle density is enhanced. They may be searched for as features in the galactic rotation curves. Previous studies suggested the evidence for these caustic rings with universal, that is common for different galaxies, para...

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Main Authors: Daniil Davydov, Sergey Troitsky
Format: Article
Language:English
Published: Elsevier 2023-04-01
Series:Physics Letters B
Subjects:
Online Access:http://www.sciencedirect.com/science/article/pii/S0370269323001326
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author Daniil Davydov
Sergey Troitsky
author_facet Daniil Davydov
Sergey Troitsky
author_sort Daniil Davydov
collection DOAJ
description Infall of cold dark matter on a galaxy may result in caustic rings where the particle density is enhanced. They may be searched for as features in the galactic rotation curves. Previous studies suggested the evidence for these caustic rings with universal, that is common for different galaxies, parameters. Here we test this hypothesis with a large independent set of rotation curves by means of an improved statistical method. No evidence for universal caustic rings is found in the new analysis.
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spelling doaj.art-5b674893447e4098a0cd3c4ba480c0972023-03-18T04:40:10ZengElsevierPhysics Letters B0370-26932023-04-01839137798Testing universal dark-matter caustic rings with galactic rotation curvesDaniil Davydov0Sergey Troitsky1Physics Department, M.V. Lomonosov Moscow State University, 1-2 Leninskie Gory, 119991, Moscow, Russia; Institute for Nuclear Research of the Russian Academy of Sciences, 60th October Anniversary Prospect 7A, 117312, Moscow, Russia; Corresponding author.Institute for Nuclear Research of the Russian Academy of Sciences, 60th October Anniversary Prospect 7A, 117312, Moscow, Russia; Physics Department, M.V. Lomonosov Moscow State University, 1-2 Leninskie Gory, 119991, Moscow, RussiaInfall of cold dark matter on a galaxy may result in caustic rings where the particle density is enhanced. They may be searched for as features in the galactic rotation curves. Previous studies suggested the evidence for these caustic rings with universal, that is common for different galaxies, parameters. Here we test this hypothesis with a large independent set of rotation curves by means of an improved statistical method. No evidence for universal caustic rings is found in the new analysis.http://www.sciencedirect.com/science/article/pii/S0370269323001326Dark matter in galaxiesRotation curvesAxions
spellingShingle Daniil Davydov
Sergey Troitsky
Testing universal dark-matter caustic rings with galactic rotation curves
Physics Letters B
Dark matter in galaxies
Rotation curves
Axions
title Testing universal dark-matter caustic rings with galactic rotation curves
title_full Testing universal dark-matter caustic rings with galactic rotation curves
title_fullStr Testing universal dark-matter caustic rings with galactic rotation curves
title_full_unstemmed Testing universal dark-matter caustic rings with galactic rotation curves
title_short Testing universal dark-matter caustic rings with galactic rotation curves
title_sort testing universal dark matter caustic rings with galactic rotation curves
topic Dark matter in galaxies
Rotation curves
Axions
url http://www.sciencedirect.com/science/article/pii/S0370269323001326
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