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Hurricane wind in a brown dwarf atmosphere will help to find out how exoplanets look

Hurricane wind in a brown dwarf atmosphere will help to find out how exoplanets look

Brown dwarfs are a cross between stars and planets. They are very massive and some can exceed the mass of Jupiter by 12 or more times. Some brown dwarfs may have a mass equal to half the mass of the Sun. These cosmic objects are amazing in that they can independently emit light, like the Sun. They are very bright and very hot. Recently, scientists have learned that the atmosphere of brown dwarfs is a continuous hurricane wind, which is directed only in one direction.

Science was not aware of the powerful wind currents on brown dwarfs. Now, having received new information about the wind, researchers will be able to understand how to smooth the surfaces of various exoplanets. Nuclear reactions occur in the core of brown dwarfs, but brown dwarfs do not withstand them, ad, therefore, behave like gas giants.

Astrophysicist Caitlin Allers of the Bucknell University of Pennsylvania, along with colleagues, analyzed the condition of one of the brown dwarfs. It is located at a distance of 34.5 million light-years and has the name 2MASS J10475385 + 2124234. It was on it that astronomers recorded such a phenomenon as a strong wind. Its infrared waves were detected using the Spitzer space telescope.

Observing the infrared range, scientists drew attention to a curious detail - a cloud or a hot spot, the movement of which has been identified for two years in a row. Radio observations showed the rotation of the magnetic field, it is determined by the rotation of the inner core of the brown dwarf. It turned out that the core rotates about 1 time in 1.76 hours, and the dwarf atmosphere - 1 time in 1.74 hours.

And this means that the wind speed, which is most often directed east, is 650 meters per second. And this speed is much higher than those data of wind flows, which are in the solar system on other planets and space objects.

Scientists want to use more powerful tools, for example, the new James Webb telescope, which is preparing to launch, to use it to study the climate and potential habitability of other worlds, or rather, exoplanets.