ALMA Detection of a Linearly Polarized Reverse Shock in GRB 190114C

Tanmoy Laskar, Kate D. Alexander, Ramandeep Gill +11

We present ALMA 97.5 GHz total intensity and linear polarization observations of the mm-band afterglow of GRB 190114C spanning 2.2 to 5.2 hours after the burst. We detect linear po…