Probing Interacting Dark Energy and Scattering of Baryons with Dark Matter in Light of EDGES 21cm Signal

Upala Mukhopadhyay, Debasish Majumdar, Kanan K. Datta

The EDGES experiment has observed an excess trough ($-500_{-500}^{+200}$ mK) in the brightness temperature $T_{21}$ of the 21cm absorption line of neutral Hydrogen atom (HI) from t…