The Solar Dynamics Observatory probe saw a new sunquake, a solar quake
(NASA / SDO)
The Solar Dynamics Observatory (SDO) recorded the first solar quake in the new cycle of solar activity.
The “sunquake” arose during a powerful X1.5 class flare, accompanied by a plasma ejection.
Sunquakes were first detected in our sun's photosphere after an X-class flare on July 9, 1996..
The astronomers were engaged in the analysis of Dopplerograms obtained by the MDI instrument of the SOHO space observatory, which studies the Sun.
Nowadays, heliophysicists believe that these seismic waves are compressional waves, similar to P-waves generated during earthquakes.
The waves are initiated by a solar flare and propagate at an initial speed of 10 km/s, accelerating to 110 km/s before dying out.
These waves are important because they make it possible to determine the properties of the layers of the Sun under the photosphere.
The photosphere is where, as expected, the sources of seismic waves are located.
On May 13, a team of researchers from the New Jersey Institute of Technology recorded a new solar quake.
This is the first sunquake in the 25th cycle of solar activity, which started at the end of 2019.
The concentric seismic originated during a powerful X1.5 class flare accompanied by a plasma ejection.
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