Constraining the Baryon Content of Cosmic Filaments Using Localized Fast Radio Bursts and DESI Imaging Data
The study used localized Fast Radio Bursts (FRBs) and DESI imaging to constrain how much baryonic matter resides in cosmic filaments at redshifts below 2. By comparing FRBs passing through filaments versus those that do not, the research found a statistically significant difference in their dispersion measure relationship with redshift, suggesting excess baryons within these structures, best described by a central overdensity of approximately 21+13-12.