This is the sound of a big sunspot on the Sun. Recorded on April 13th by Thomas Ashcraft in New Mexico
These radio sounds are caused by beams of electrons – in this case, accelerated by B-class explosions in the sunspot’s magnetic canopy.
As the electrons slice through the sun’s atmosphere, they generate a ripple of plasma waves and radio emissions detectable on Earth 93 million miles away. Astronomers classify solar radio bursts into five types; Ashcraft’s recording captured a Type III.
“There have been a lot of these sounds over the past week, and they appear to be intensifying now that the sunspot is directly facing Earth,” says Ashcraft.
Original Article:http://strangesounds.org/2019/04/big-sunspot-produces-mysterious-ocean-surf-sounds.html
