Rotating once every 1.4 seconds, it is the fastest known rotating magnet and possibly one
Researchers recently found that impulses frommagnetars become weaker when moving from low to high radio frequencies: it has a steep radio spectrum. Its radio emission is not only cooler than four other radio magnets, but also about 90% of all pulsars. In addition, scientists found that the magnetar in just two weeks became brighter by more than 10 times.
In comparison, four other radio magnets have an almost constant brightness at radio frequencies.
The age of a young magnetar, from 240 to 320 years,measured both by the period of its rotation, and by how quickly it slows down over time. However, these data are unlikely to be accurate. The rate of deceleration of the rotation of magnetars varies greatly throughout the year, especially after outbreaks, and can lead to incorrect estimates of age. This is also confirmed by the absence of any supernova remnant in the position of the magnetars.
Lead author of the study Marcus Lowera theory explaining the mysterious properties of a magnetar. Swift J1818.0–1607 could begin its life as an ordinary radio pulsar, which eventually gained the rotational properties of a magnetar. This can happen if the magnetic pole and the rotation poles of the neutron star are quickly aligned, or if the material of the supernova falls back onto the neutron star and bury its magnetic field.
Then the latent magnetic field will be slowfloat back to the surface for thousands of years. To verify these theories, constant observations of Swift J1818.0–1607 are required for months or years.
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