Observing molecular hydrogen clouds and dark massive objects in galactic halos

TL;DR

This paper proposes methods to detect molecular hydrogen clouds and dark massive objects in galactic halos, specifically in M31, using Doppler shifts and infrared emissions, to better understand dark matter composition.

Contribution

It introduces novel observational techniques for detecting molecular hydrogen clouds and MHOs in galactic halos, advancing dark matter research.

Findings

Potential detection of molecular hydrogen clouds in M31's halo.

Infrared observation strategies for MHOs.

Doppler shift method for halo cloud detection.

Abstract

Molecular hydrogen clouds can contribute substantially to the galactic halo< dark matter and may lead to the birth of massive halo objects (MHOs) observed indirectly by microlensing. We present a method to detect these molecular clouds in the halo of M31 using the Doppler shift effect. We also consider the possibility to directly observe MHOs in the halo of M31 via their infrared emission.