Mathieu Renzo

Scientists simulated the birth of black holes from massive stars and saw that magnetic fields act as a cosmic brake. A strong field slows the hole's spin, a weak one spins it up to near-light speed. This explained why detectors occasionally see pairs of heavyweight black holes, like the record-break

Three-dimensional modeling of a collapsing star has shown for the first time: from chaotic magnetic fields, a dynamo effect spontaneously arises, creating giant magnetic loops that feed oscillating jets. This mechanism explains the launch of long gamma-ray bursts and predicts their unusual 'striped'