Measurements of Polarized Light in the Afterglow of GRB 120308A (image) NASA/Goddard Space Flight Center Share Print E-Mail Caption Measurements of polarized light in the afterglow of GRB 120308A by the Liverpool Telescope and its RINGO2 instrument indicate the presence of a large-scale stable magnetic field linked with a young black hole, as shown in this illustration. Credit NASA's Goddard Space Flight Center/S. Wiessinger Usage Restrictions None Share Print E-Mail Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.