Azerbaijan National Academy of Science

Astronomers have detected the strongest magnetic field ever observed in the universe. Studying powerful X-ray signals coming from a neutron star, the team calculated that its magnetic field is tens of millions of times stronger than any ever created in a lab here on Earth.

Designated GRO J1008-57, this neutron star belongs to a very specific subtype – an accreting X-ray pulsar. As a pulsar, it emits powerful beams of electromagnetic radiation that periodically sweep over the Earth like a lighthouse beam. The “accreting X-ray” description comes from the fact that material regularly falls onto its surface, causing periodic energetic X-ray outbursts that can be detected by telescopes, stated by Shamaky Astrophysical Observatory of ANAS. 

This CRSF was measured at an energy of 90 keV, and from that the team calculated the magnetic field of the pulsar to be as high as one billion Tesla. That is far and away the most powerful magnetic field ever detected in the universe – for reference, the strongest magnetic field created in the lab so far is a “mere” 1,200 Tesla.

While this is the strongest that’s been directly detected, it’s theorized that even more intense versions of neutron stars, called magnetars, may have magnetic fields as strong as 100 billion Tesla.

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