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arXiv · 1904.13390

Gravitational lensing study of cold dark matter led galactic halo

Samrat Ghosh·Arunava Bhadra·Amitabha Mukhopadhyay
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Abstract

In this work the space-time 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 space-time as a gravitational lens. It is found that the aforementioned space-time as the gravitational lens can consistently explain the galaxy-galaxy weak gravitational lensing observations and the lensing observations of the well-known Abell 370 galaxy cluster.

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Samrat Ghosh, Arunava Bhadra, Amitabha Mukhopadhyay. 2019-04-30. Gravitational lensing study of cold dark matter led galactic halo. https://arxiv.org/abs/1904.13390

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