Keywords

#massive_compact_halo_object

Massive compact halo object

Hypothetical form of dark matter in galactic halos

A MAssive Compact Halo Object (MACHO) is a kind of astronomical body that might explain the apparent presence of dark matter in galactic halos. A MACHO is a body that emits little or no radiation and drifts through interstellar space unassociated with any planetary system. Since MACHOs are not luminous, they are hard to detect. MACHO candidates include black holes or neutron stars as well as brown dwarfs and unassociated planets. White dwarfs and very faint red dwarfs have also been proposed as candidate MACHOs. The term was coined by astrophysicist Kim Griest.

Sun 15th

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Massive compact halo object Weakly interacting massive particle Non-standard cosmology Dark matter halo Machos Robust associations of massive baryonic objects Direct detection of dark matter Dark matter Gravitational microlensing Thorne–Żytkow object
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