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Between these swarms, known collectively as trojans, we've identified more than 12,000 asteroids to date, but there's a curious mystery that has baffled scientists: 'The ability to successfully simulate an event early in the development of the solar system and apply this to today's issues can also be a key tool as astrophysicists, and other researchers are working to find out more about the beginning of our world.
'research has appeared in astronomy. Among these flocks, collectively referred to as trojans, Over 12,000 asteroids have been identified so far, But there is one curious mystery that has confused scientists: the swarm of the head, known as the Greeks or the fourth swarm, has a lot more asteroids than the Trojans or Fifteen, although the two groups appear to be stable as well. Now a team of scientists has an answer: a shift in the distance of Jupiter from the sun in the first days of the solar system.
The researchers note that it is rather rough.We propose that an outward, in terms of distance to the Sun, fast migration of Jupiter can distort the configuration of the Trojan swarms, resulting in more stable orbits in the L4 swarm than in the L5 one,Nor did current work address the potential effects of Saturn, Uranus or Neptune. says astronomer Jian Li of Nanjing University in China.
"This mechanism, which temporarily induced different evolution paths for the two asteroid groups that share the orbit of Jupiter, provides a new and natural explanation for the unbiased observation, that the L4 asteroids are about 1.6 times more than the asteroids in the L5 swarm."
L4 and L5 refer to Lagrange points, gravitationally stable points that occur during two-body interactions. Each two-body system has five Lagrange points, where the gravitational interaction between the two bodies balances with the centripetal force required for a small body to move with them.
Each two-body system has five offset points, where the gravitational interaction between the two bodies equilibrates with the centripetal force necessary for a small body to move with them. Three of these points are along the line between the two great bodies.
Frameborder="0? allow="accelerometer; autoplay; paperweight; ciphered media; gyroscope; image in image; web-share" allowfullscreen> The Greeks and Trojans of Jupiter, according to decades of research, are also expected to be many. Both populations have nearly identical properties in terms of their stability and their ability to survive, but the Greeks are much more numerous than the Trojans.
To understand why, Li and colleagues have decided to model the early evolution of Jupiter based on the so-called early instability of giant planets.
The Grand Tack hypothesis, which could resolve several problems with the Solar System, suggests that Jupiter moved inwards towards the Sun and then moved back out again to its current distance.
Grand Tack's assumption, that could solve a number of issues related to the solar system, suggests that Jupiter moved inward into the sun and then retreated back to its current distance. According to the team's model, the asymmetry of the Trojan Horse population can be reproduced during a fast outward migration, during which the Trojan horses are lost. The Greeks are lost when it comes to immigration.
This is a different scenario from a 2019 study that found the asymmetry was the result solely of an inward migration, but it lines up better with the Grand Tack hypothesis.
This is a different scenario from a 2019 study that showed that asymmetry was only the result of inward migration. It aligns more closely with Grand Tack's hypothesis.
Today's model is a very interesting starting point. The researchers note that it is rather rough.
Future research could work towards the production of a more detailed model to find out if the number, order or duration of migrations is relevant to the number of Trojan horses. Neither did the current work consider the potential effects of saturn, uranus or neptune.
"The characteristics of the current Solar System hold as-yet unsolved mysteries into its formation and early evolution," says astronomer Nikolaos Georgakarakos of New York University Abu Dhabi in the United Arab Emirates.
And the identification of more Trojan horses will provide a more accurate description of the population of these objects, which will also help refine future analyses, according to the researchers."
The research has been published in Astronomy & Astrophysics.
