Here I discuss some computational physics methods that may sound interesting to you, in terms of dark matter understating and discovery. Though this should involve a lot of alien kind of equations, I try to minimize their use in the current story.
|Figure 1a (Left) showing a basic pseudocode for N-body simulation and on right showing the expected velocities (A) and actual velocities (B) at distances from the centre of the galaxy.|
There are other computational method which further give the proof in favor of dark matter, but discussing all these will be beyond the scope of this story. Now lets talk about the modeling such dark matter. Modeling gives a better understanding of behavior, nature and interaction of dark matter. There are few theories about the dark matter viz. cold dark matter, hot dark matter and warm dark matter as mentioned in the previous blog. Taking up the case of cold dark matter the particles move at a slow speed. The slow speed allows the individual galaxies to clump together, whereas in case of hot dark matter the high speed of particles fails to explain the theory of galactic formation. The obvious question that can come to you is why? The reason is very simple. The particles in hot dark matter are ultralight and therefore do not come up with enough gravitational force to explain the formation of galaxies. The cold dark matter on the other hand talks about heavier particles that can explain the the unexplained ones.
* I do not mention the bibliographic references here in the blog just to make it shorter, it can be provided if needed.
You have to be a genius to understand the simplicity and thats what DMR was.
RIP Denis Ritchie
|Image Source: Wikipedia|