Juno study provides insight on Jupiter’s structure, gravitational field

Jupiter is generally considered to be the oldest planet in the Solar System. Although scientists want to know how long it took to make it. The planet’s metal concentration and distribution suggest that Jupiter ate a lot of rocky planets when it was young, a new study says. Since the Juno spacecraft arrived at Jupiter in July 2016 and began collecting data, it has revolutionized the understanding of the planet’s formation and evolution. Its gravity science instrument is one of the main attractions of the mission. It sends and receives radio messages between Juno and Earth’s Deep Space Network. The process determines Jupiter’s gravitational field and provides researchers with more information about the planet’s composition.

Jupiter Started its formation by adding rocky material. After a period of rapid gas accretion from the solar nebula, it became the monster it is today. However, there is substantial controversy regarding the initial stages of rocky accretion. Is it possible that it deposited a greater mass of rocks in the form of planets? Or did it accumulate pebble-sized stuff?

study goal, published in the magazine astronomy and astrophysicsHad to find the answer.

The authors sought to use junoGravitational science experiments to investigate metals in the planet’s atmosphere. According to experts, the atmosphere of Jupiter is not as homogeneous as was originally imagined. Metals are found in greater amounts towards the core of the planet than in other layers. Overall, the weight of the metals ranges from 11 to 30 . happens between Earth public.

The researchers used the data to create simulations of Jupiter’s internal processes. Two sets of models were prepared by the team. The first group consisted of 3-layer models, while the second group consisted of attenuated core models.

Lead author Yamila Miguel, assistant professor of astrophysics at the Leiden Observatory and the Netherlands Institute for Space, explains, “There are two mechanisms for obtaining metals during the formation of a gas giant like Jupiter: through the accumulation of smaller pebbles or larger planets. ” research.

Miguel said that once a young planet reaches a certain size, it begins to remove stones. At first, Jupiter’s current level of metal prosperity seemed impossible. As a result, researchers can rule out a scenario in which Jupiter is composed entirely of pebbles. “The planets are too big to block out, so they must have played a role,” Miguel said.

With increasing distance from the center, the number of metals in Jupiter’s interior decreases. This indicates that there is no convection in the planet’s deep atmosphere, which scientists previously assumed. The authors also speculate that once Jupiter originated, even when it was still young and hot, it was not mixed by convection.

The researchers’ findings also apply to the study of gaseous exoplanets and efforts to identify their metallicity. In the case of Jupiter there was no way to tell its metallicity from a distance. It was only after Juno returned that scientists could indirectly determine metallicity.


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