Dark matter -- particles or modified gravity?

[copernicus1]

What is the evidence for dark matter being new particles as opposed to some modified form of gravity?

 

[mfb]

Most of the evidence for Dark matter and all arguments against MOND suggest a particle-like origin. The list is too long to explain every point in detail here. Do you have more specific questions?

 

[martinbn]

http://en.wikipedia.org/wiki/Bullet_Cluster#Significance_to_dark_matter

 

[nicoo]

MOND/TeVeS is not the only alternative to real dark matter.

For example Mimetic Dark Matter may gain some echo in the next months
http://arxiv.org/abs/1308.5410