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Do we notice any significant difference in distribution and dynamics of dark matter in galaxies when n-body simulations are done with high or low-mass dark matter particles?
I didn't know that the mass resolution is that low. Is it a computational limit, and therefore can improve?phyzguy said:What do you mean by high or low mass? If you are thinking of resolving the mass of the DM particles this way, you need to know that the resolution of the simulations is nowhere near the level of being able to do this. I think the highest resolution n-body simulations have particle masses on the order of 10^4 to 10^5 Msun.
An N-body simulation is a computational method used to simulate the motion and interactions of a system of particles. It involves solving the equations of motion for each individual particle in the system, taking into account the gravitational forces between them.
The purpose of simulating high or low-mass dark matter particles is to understand the behavior and distribution of dark matter in the universe. Dark matter is believed to make up a significant portion of the total mass in the universe, and studying its properties through simulations can help us better understand its role in the formation and evolution of galaxies.
An N-body simulation of dark matter particles is different from other simulations because it takes into account the effects of gravity from all particles in the system, rather than just the nearest neighbors. This is important for accurately modeling the behavior of dark matter, which is believed to interact primarily through gravitational forces.
One of the main challenges in performing N-body simulations of dark matter particles is the large computational resources required. The large number of particles in the simulation and the complex interactions between them make it a computationally intensive task. Additionally, accurately modeling the behavior of dark matter, which is still not fully understood, presents a challenge.
N-body simulations are used in dark matter research to test different theories and models of dark matter and its behavior. By comparing the results of simulations to observations of the universe, scientists can gain insights into the properties of dark matter and its role in the formation and evolution of galaxies. These simulations can also help guide future observations and experiments aimed at detecting and studying dark matter.