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The sun is not silent. The data collected by the European Space Agency (ESA) and NASA's Solar Observatory and Solar Observatory (SOHO) allow today to hear the movement of the star the most close to our planet.
Institutions, which studied the atmosphere of the Sun for more than 20 years, succeeded in separating vibrations from the sun and transforming them into sounds
This transformation helps scientists to study in depth what is happening inside the Sun since they are " concrete representation of its dynamic movements" that can not be observed with the naked eye, as explained by NASA in a press release.
Alex Young, Deputy Director of Science at the Division of Heliophysics Sciences at NASA Space Flight's Goddard Center, explained that "we have no easy ways to look at the Inside the Sun we do not have a microscope. "
"Using the vibrations of the Sun allows us to see or inside ," he said.
How?
NASA explained that these solar sounds were generated with data from the SOHO and Delson Michelson Imager collected for 40 days.
Data was sonified by the Stanford Experimental Physics Laboratory, A. Kosovichev.
The procedure was to take the Doppler velocity data, averaged over the solar disk, so that only the bbad modes remained angular degree eliminating the effects of spacecraft motion, the adjustment of the instrument and other noises.
Then in Kosovichev they filtered the data at about 3 mHz to select clean sound waves (and not supergranulation and instrumental noise.)
Finally, the missing data was interpolated and the scaled data ( accelerated a factor of 42,000 to place it in the audible range of human hearing (kHz).] What for?
Solar Sounds allow scientists to study a range of complex movements within the Sun ranging from solar flares to coronal mbad ejections.
The waves travel and bounce inland of the Sun, and if the eyes were sensitive enough, they could see that, "says the scientist.
" We can see huge rivers of solar matter circulating. We finally begin to understand the layers of n leil and its complexity "said Young.
Young pointed out that "the sound gives us a probe into a star .I think it is a very good thing."
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