The dispersion measure and rotation measure from fast radio burst host galaxies based on the IllustrisTNG50 simulation

Understand

Fast radio bursts (FRB) will become important cosmological tools, as the number of observed FRBs is increasing rapidly with more surveys being carried out.

• A large sample of FRBs with dispersion measures (DM) and rotation measures (RM) can be used to study the intergalactic magnetic field.
• However, the observed DM and RM of FRBs have multiple contributors which must be quantified to obtain the intergalactic medium's (IGM) DM and RM.
• In this paper, we estimate one such contribution to DM and RM: that of FRB host galaxies.