The inner solar system seems to have broken the laws of physics. Over the years, scientists have come up with many possible explanations for why the inner solar system rotates at a slower rate than expected, but the real reason has remained unknown for decades. But this new study by researchers at Caltech (California Institute of Technology) may help explain why the inner Solar System doesn’t spin faster. This mystery can be explained by the movement of charged particles that are thin disks of gas that revolve around young stars.
These thin disks of gas and dust, called accretion disks, have been orbiting young stars for tens of millions of years. Scientists have long known that this inner spiral should accelerate the inner part of the disc due to the conservation of angular momentum. The inner solar system, which contains the terrestrial planets and stretches from the sun to the asteroid belt, is not spinning as fast as it should according to the laws of physics, according to previous findings.
Now, Caltech scientists have shown how particles in the accretion disk interact using new simulations of a fictitious accretion disk. Caltech researchers used computer models of a super-thin virtual accretion disk of charged particles colliding with neutral particles in the presence of magnetic and gravitational fields.
The researchers found that the interaction between these particles and neutral atoms resulted in positively charged ions spinning inward, while electrons moved outward. In the process, the neutral particles lost their angular momentum and moved inward toward the center. Meanwhile, the accretion disk here acted like a gigantic battery.
“This model had just the right amount of detail to capture all the essential features because it was big enough to behave like trillions and trillions of neutral particles, electrons and ions colliding around a star in a magnetic field,” Paul Bellan . professor of applied physics at Caltech mentioned in a statement.
Analysis of the experiment at the subatomic level showed that angular momentum is not conserved in the classical sense. However, even though it’s a small anomaly, it makes a big difference when it comes to the massive scale of a solar system, Bellan suggested.
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