Scientists over 45 years old have been trying to prove the existence of this “drumming” - sound standing waves,
According to the calculations, the interaction of the magnetic fieldand magnetopauses with third-party waves and particles that bombard the Earth lead to the appearance of special standing waves on the surface of the magnetosphere. They resemble the beats of drums. For many years physicists have been trying to hear these sounds, which are formed at frequencies tens of thousands of times lower than people can hear, but the intensity of this process did not allow experimental confirmation of the theory.
A group of scientists led by Martin Archer fromQueen Mary University in London analyzed data from THEMIS magnetospheric probes, lining up in 2017 in an ideal line at the boundary of the magnetosphere.
It turned out that the magnetic shield that protectsEarth from cosmic rays, sometimes "cracks" and misses some of them. During the observation, there was a small release of plasma from the Sun - this allowed the probes to record the vibration of the magnetic field, as well as the propagation of these waves over its entire surface and reflection from fixed parts.
Initial and reflected waves begin to interfereeach other, enhancing its action, this leads to the emergence of so-called standing waves, where some points remain fixed, while others vibrate in different directions.