Seeing the halo rotation of nearby spiral galaxies using Planck data
Astrophysics of Galaxies
2021-11-17 v1
Abstract
The rotation of the galactic halos is a fascinating topic which is still waiting to be addressed. Planck data has shown the existence of a temperature asymmetry towards the halo of several nearby galaxies, such as M31, NGC 5128, M33, M81, and M82. However, the cause of this asymmetry is an open problem. A possibility to explain the observed effect relies on the presence of "cold gas clouds" populating the galactic halos, which may be the answer to the so-called missing baryon problem. Here, we present a technique to estimate an upper limit to the rotational velocity of the halo of some nearby spiral galaxies by using both their dynamical masses and the Planck data.
Keywords
Cite
@article{arxiv.2111.08373,
title = {Seeing the halo rotation of nearby spiral galaxies using Planck data},
author = {Noraiz Tahir and Francesco De Paolis and Asghar Qadir and Achille A. Nucita},
journal= {arXiv preprint arXiv:2111.08373},
year = {2021}
}