3 ms·

Would such a particle not accumulate after a slowdown at a la grange point? its acummulation altering then other properties of that space we could measure?

• antonvs 2y ago
  Such particles would be frictionless and collisionless - they don't interact via the electromagnetic force. As such, they would just sail through a Lagrange point on whatever geodesic they're on. There's no particular reason to expect them to collect there, except possibly a small subset of particles that has a low enough velocity to actually be gravitationally captured. But that's unlikely if they're coming from some distance from the Lagrange point. The expected quantity of particles that could be captured like this is too low to be measurable. Keep in mind that much of the nature of what we observe in the solar system is a consequence of friction or collisions having occurred in the past: the flattened disk shape, with all the planets orbiting on a plane, the accumulation of matter into objects like stars, planets, asteroids, and comets, and the parameters of their orbits were all heavily influenced by friction and collisions. Particulate dark matter would experience none of that, so doesn't end up being as organized as ordinary matter.