The temperature difference can be attributed to the Sun by magnetic fields




The temperature difference can be attributed to the Sun by magnetic fields


In two recent scientific papers, see the light on 12 November in the framework of the scientific meeting Hinode 7 passing at the moment in Japan, researchers from Columbia University have tried to find an answer to the question of why the atmosphere, but rather the photosphere of the sun is hotter than the surface of our star . This question tormented by astronomers for many decades, however, a clear and precise explanation of this phenomenon scientists have failed to find.

Scientific staff at Columbia University has long been determined that the temperature of the surrounding sun corona, photosphere, is about 1.5 million degrees Kelvin. At the same time, the actual temperature of the surface of the star hardly gets to the level of 6000 degrees Kelvin. And speaking of the inner layers of the light and in particular the core, the temperature rises to 15 million degrees Kelvin.

The reason that the star has such an incredibly different temperature behavior between the layers, so still has not received a clear and intelligible explanation. However, two recent studies on this subject quite possibly be able to provide a new perspective on the processes that are responsible for these huge differences in temperature.

With the support of the National Science Foundation, the United States, experts from Columbia University have found out that all these temperature anomalies can stand magnetic waves, also known as Alfven waves. This discovery researchers used data from Japanese satellite “Hinodeh” and ultraviolet spectrometer for measuring the velocity of particles emitted by the sun, as well as for determining the temperature and density of the solar plasma.

In the study, the team managed by Michael Hahn and Daniel Wolf Savin-, analyzed the coronal hole on one of the poles of the Sun . The researchers found that the magnetic field lines pulsate in a way that give energy from the core of the star to its crown.

“This is a very important discovery. The work is essentially the holy grail for heliophysics. It allows us to better understand not only the mechanics of our star, but also the consequences caused by it, “- said the director of a research program on solar activity Ilya Russev of the U.S. National Science Foundation.

“This is a great answer for long been interested in almost everyone who has been studying the sun, question. We still do not know what in the end can lead these studies, however, we hope that it will at least add one more piece to the overall puzzle. We even could not imagine that the piece will be so big, “- adds Wolf Savin.

Thanks to this discovery, heliophysicist now know where to look any further to get the new data. It is possible that scientists will soon be able to determine how the lines of the magnetic field can affect the temperature changes on all layers of our star.
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Tags: Geleofizika , Discovery , Sun .


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