Gravitational lensing study of cold dark matter led galactic halo. (arXiv:1904.13390v2 [gr-qc] UPDATED)
<a href="http://arxiv.org/find/gr-qc/1/au:+Ghosh_S/0/1/0/all/0/1">Samrat Ghosh</a>, <a href="http://arxiv.org/find/gr-qc/1/au:+Bhadra_A/0/1/0/all/0/1">Arunava Bhadra</a>, <a href="http://arxiv.org/find/gr-qc/1/au:+Mukhopadhyay_A/0/1/0/all/0/1">Amitabha Mukhopadhyay</a>
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.
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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