Story perspectives

Polarized Light Reveals Ultra-Strong Magnetic Field in GRB 260310A

7/16/2026

Summary

Story summary

Researchers led by Tanmoy Laskar (University of Utah) and Arizona team detected polarized emission from GRB 260310A.
They measured Faraday rotation with the National Science Foundation (NSF) Very Large Array, first wavelength-dependent observation in a gamma-ray burst, revealing a magnetic field thousands of times stronger than Milky Way or intergalactic contribution.
The field suggests the burst exploded inside a magnetized H II region, enabling VLA monitoring to track magnetic-field evolution in jets.

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Story summary

Researchers led by Tanmoy Laskar (University of Utah) and Arizona team detected polarized emission from GRB 260310A.
They measured Faraday rotation with the National Science Foundation (NSF) Very Large Array, first wavelength-dependent observation in a gamma-ray burst, revealing a magnetic field thousands of times stronger than Milky Way or intergalactic contribution.
The field suggests the burst exploded inside a magnetized H II region, enabling VLA monitoring to track magnetic-field evolution in jets.