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- Title
Gravitational lensing study of cold dark matter-led galactic halo.
- Authors
Ghosh, Samrat; Bhadra, Arunava; Mukhopadhyay, Amitabha
- Abstract
In this work, the spacetime geometry of the halo region in spiral galaxies is obtained considering the observed flat galactic rotation curve feature, invoking the Tully–Fisher relation and assuming the presence of cold dark matter in the galaxy. The gravitational lensing analysis is performed treating the so-obtained spacetime as a gravitational lens. It is found that the aforementioned spacetime as the gravitational lens can consistently explain the galaxy–galaxy weak gravitational lensing observations and the lensing observations of the well-known Abell 370 and Abell 2390 galaxy clusters.
- Subjects
CICERO, Marcus Tullius, 106 B.C.-43 B.C.; GRAVITATIONAL lenses; SPIRAL galaxies; GALACTIC halos; GALAXY clusters; DARK matter; SPACETIME; ROTATIONAL motion
- Publication
International Journal of Modern Physics D: Gravitation, Astrophysics & Cosmology, 2021, Vol 30, Issue 12, p1
- ISSN
0218-2718
- Publication type
Article
- DOI
10.1142/S0218271821500899