Astrophysics (index)about

MACHO

(Massive Compact Halo Object, Massive Astrophysical Compact Halo Object)
(proposed astronomical objects comprising dark matter)

MACHO (for Massive Astrophysical Compact Halo Object aka Massive Compact Halo Object) is a proposed Dark Matter element consisting of an astronomical object producing too little Electromagnetic Radiation to be observed, such as Brown Dwarves and/or Black Holes. Searches for them include Surveys of Occultations and Gravitational Microlensing. Finding enough to statistically explain the kinematics of galaxies would be evidence for MACHOs, but this hasn't been accomplished.

An alternative idea is that dark matter consists of some exotic subatomic particle, the term being used for one being a WIMP.


(dark matter,object type)
http://en.wikipedia.org/wiki/Massive_compact_halo_object

Referenced by:
Dark Matter
EROS
GMAN
Gravitational Lensing
MACHO Project
POINTE-AGAPE
WIMP

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