This neutron star, named gro j1008-57, belongs to a very special subtype, X-ray accretion pulsar. As a pulsar, it emits a powerful beam of electromagnetic radiation that periodically sweeps the earth like a lighthouse beam. The description of “accretion X-rays” comes from the fact that matter falls on its surface regularly, causing periodic high-energy X-ray bursts that can be detected by telescopes. < / P > < p > in an explosion in August 2017, astronomers used the “comet” hard X-ray Modulation Telescope to observe pulsars. They noticed a special feature called cyclotron resonance scattering absorption (i.e., cyclotron absorption line feature, crsf), which is a mode produced when X-ray photons scatter plasma electrons from the surface. < / P > < p > the crsf was measured at an energy of 90 keV, and the team calculated that the pulsar’s magnetic field was as high as 1 billion Tesla. This is the strongest magnetic field ever detected in the universe – for reference, the strongest magnetic field created so far in the laboratory is “only” 1200 Tesla. < / P > < p > although this is the strongest magnetic field directly detected, it is speculated that the stronger version of the neutron star, the so-called magnetostar, may have a magnetic field as strong as 100 billion Tesla. Global Tech