The echo of the comet that fell in 1994 has revealed new data about Jupiter

It collided with Jupiter in 1994, but Komet Shoemaker-Levy 9. It seems to have still things to be taught to us about the solar system’s largest planet.

A new analysis of the trace of the comet’s impact – still enlarged the atmosphere of Jupiter. It has resulted in the first direct measurement of the Giant Giant Stratosphere wind. In the middle of the atmosphere without clouds.

A narrow wind band is known as a jet, like the flow of the earth’s jet. It blew up to 400 meters per second on a high latitude. It’s around 1,440 kilometers per hour (895 mph), exceeding the top wind. Speed of about 620 km / h seen in a large red spot storm. Team detection and analysis show that this jet can act like a colossal vortex.

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About 50,000 kilometers in diameter and 900 kilometers high.

“A vortex of this size,” said Astronomers Thibault Cavalie from Laboratoire d’Astrophysique de Bordeaux in France.”It will be a unique meteorological animal in our solar system”.

Death Comet Shoemaker-Levy 9 is one of the most spectacular events we have seen in the solar system. First, when the ice stones turned close to Jupiter. It was destroyed by the planet’s extraordinary gravitational pull.

Fragments spent two years of the earth closer and closer, until finally, in July 1994. They collided with the atmosphere of Jupiter in the views of stunning fireworks.

For scientists, it is an extraordinary gift. The impact stirred Jupiter’s atmosphere, revealing new molecules and the surface of the Jupiter of grated tissue for months. This allows measuring wind speed and a new study from the composition of Jupiter’s atmosphere and its magnetic field.

The impact of the comet also adds new molecules that have not yet been in Jupiter.

It is hydrogen cyanide tracked by a team of scientists using 42 antennas. From a large millimeter array / submillimeter Atacama in Chile.

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By using this strong instrument, astronomers observed the Doppler shift from hydrogen cyanide. The way the wavelength of electromagnetic emissions of molecules elongated. Or shorter depends on whether it moves away from or towards the observer.

“By measuring this shift, we can conclude wind speeds like people. Who can conclude the speed of trains that pass by changing the frequency of train whistle”. Said planetary scientist Vincent Hue. From the Southwest Research Institute in the United States.

Analyzing the length of this shift allows scientists to calculate the speed at which hydrogen cyanide moves.

Around the planet’s equator, the strong stratospheric wind blows explode at an average speed of around 600 kilometers per hour. All the time. Here on earth, the maximum wind speed ever recorded is 407 km / h (253 mph). It’s during a wild tropical cyclone.

However, found one of the most interesting jets right below Jupiter’s permanent Auroral Oval. Several hundreds of kilometers under the auroral wind. Clockwise in the north and anti-clockwise in the south, with speeds of up to 300 to 400 meters per second. The team thinks that this jet is an auroral wind tail.

Previous studies have predicted that the auroral wind will decrease with strength as a decreased height:

Limiting before reaching the stratosphere, so this is a beautiful surprise. The complexity of the atmosphere that is not visible on a planet that we already know is a coinage complex.

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And it sets the stage for future observations of the upcoming mission. Such as Jupiter European Space Agency EsPorer (juice), and an enormous terrestrial telescope is currently being built.

“The results of this alma opened a new window for the study of the Auroral Jupiter region,” Cavalié said.