Dark matter question

  • Thread starter Deepak247
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Hi there.....
I believe my previous questions related to a specific topic has caused a stir here with many people complaining/advising me to study that field more properly before asking anything.....

So now i will change topic hoping everyone is happy with it.......

I want to discuss dark matter now.......Ive researched on it and what i need to know is that...


When is this proposed "DARK MATTER" came into being after the big bang?
 

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  • #2
Janus
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That would depend on what dark matter is actually made of. At this point, we don't know. We know that the evidence points towards its existence, but as to what it is, we can only hypothesize.

It's kind of like finding your trash can disturbed. The evidence points to some animal getting into it, but you don't know what kind. Is it raccoons? Possums? Cats?
 
  • #3
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yes of course but what is the MOST LIKELY assumption ? at what time or EPOCH after big bang does scientists consider it to be created? They must have some clue........do they?
 
  • #4
jimgraber
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yes of course but what is the MOST LIKELY assumption ? at what time or EPOCH after big bang does scientists consider it to be created? They must have some clue........do they?
The most popular answer would be WIMPs at the time of the electroweak freeze out, much less than one second after the "big bang". Also Google "LSP" and "Axion" for further alternatives.
Best,
Jim Graber
 
  • #5
jimgraber
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<http://web.njit.edu/~gary/202/Lecture26.html> [Broken]
Reading this lecture might be fun for you.
Jim Graber
 
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