T2MR is a miniaturized, magnetic resonance - based approach that measures how water molecules react in the presence of magnetic fields. (marketfolly.com)
Because the researchers were able to analyze polarization data that spanned nearly the entire timeframe of the burst — a rare achievement — they were able to discern the presence of a magnetic field and track how it changed as GRB160625B progressed. (sciencedaily.com)
When small, iron - rich particles are melted and then cooled, they record the presence of any magnetic field that may be present at the time. (sciencedaily.com)