Massive compact halo object - Wikipedia 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 [1]
MACHOs (Massive Compact Halo Objects) - Sentinel Mission Massive Astrophysical Compact Halo Objects, or MACHOs, are a type of astronomical object that are thought to make up a significant portion of the dark matter in the universe MACHOs are objects that have a mass similar to that of stars, but are not actively undergoing nuclear fusion like stars are
MACHOs may be out of the running as a dark matter candidate MACHOs are any type of non-luminous, ultra-compact object that emits little radiation, such that they aren’t detected through normal means It’s believed that a grouping of these
MACHOs | Dark Matter Puzzle, Detection Impact Massive Compact Halo Objects (MACHOs) are a proposed form of dark matter, which has long perplexed astronomers and physicists Unlike luminous celestial bodies like stars and planets, MACHOs do not emit or absorb light, making them invisible and detectable only through their gravitational effects
Massive Compact Halo Objects - an overview - ScienceDirect Massive Compact Halo Objects (MACHOs) are compact astronomical bodies that make up a significant part of the mass of the Galaxy They are historically known for their faintness and are best detected through gravitational interactions, such as gravitational lensing, rather than direct imaging
The Hidden Lives of Galaxies - Hidden Mass - Imagine the Universe! MACHOs (MAssive Compact Halo Objects): MACHOs are objects ranging in size from small stars to super massive black holes MACHOS are made of ordinary matter (like protons, neutrons and electrons) They may be black holes, neutron stars, or brown dwarfs Neutron Stars and Black Holes are the final result of a supernova of a massive star
Foundations: The MACHO hunt for dark matter An alternative idea was that dark matter could be made of massive objects such as brown dwarfs, neutron stars, or black holes (collectively known as MACHOs) In 1986, Bohdan Paczynski suggested one method to identify MACHO dark matter through gravitational microlensing
MACHOs | COSMOS - Swinburne These include black holes, neutron stars, faint stars (red, white and brown dwarfs) and planets – objects which have come to be collectively known as MACHO s (MAssive Compact Halo Objects) One method for detecting these objects in the halo of the Milky Way is through gravitational micro-lensing
WIMPs and MACHOs - Caltech Astro Outreach WIMP is an acronym for weakly interacting massive par-ticle and MACHO is an acronym for massive (astrophys-ical) compact halo object WIMPs and MACHOs are two of the most popular DARK MATTER candidates They repre-sent two very different but reasonable possibilities of what the dominant component of the universe may be