massive compact halo object

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massive compact halo object

[¦mas·iv ¦käm′pakt ′hā·lō ‚äb‚jekt]
(astronomy)
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Primordial black holes are categorized in a class of entities called Massive Compact Halo Objects (MACHOs) and it has been theorized that dark matter - the enigmatic theoretical stuff that accounts for most of the mass in the universe - could be made of MACHOs in the form of these ancient black holes.
She deftly explains why physicists are hunting for weakly interacting massive particles, or WIMPs, rather than massive compact halo objects, or MACHOs (a true physics underdog story).
Astronomers have been monitoring the LMC to hunt for evidence of massive compact halo objects, or MACHOs.
They reasoned that the presence of massive compact halo objects (MACHOs) should be apparent through gravitational microlensing--the amplification of background starlight by the focusing effect of the gravity of unseen foreground objects passing across our line of sight (July issue, page 26).
Later came a competing hypothesis that the dark matter consists of large bodies of normal cold matter, called MAssive Compact Halo Objects, or MACHOs.
Se la supone repartida por el universo en forma de cuerpos oscuros, como las llamadas estrellas cafe --tan grandes como Jupiter pero sin brillo--; en enormes masas de hielo y cocas comparables a planetas que flotan libremente sin estar asociadas a ninguna estrella; o en los MACHOs (acronimo en ingles de Massive Compact Halo Objects u Objetos Masivos Compactos del Halo), que serian colosales acumulaciones de materia distribuida como un halo en las zonas perifericas de las galaxias.
Astronomers report evidence of Massive Compact Halo Objects at the outskirts of the Milky Way (9/25/93, p.
The Great Melbourne telescope had been instrumental in detecting a type of dark matter called massive compact halo objects, or MACHOs.
He introduces readers to this search, defining what scientists know about the nature of dark matter and introducing candidate hiding places known as massive compact halo objects (MACHOs).
Finding some, they reasoned, would support the scenario that the Milky Way is surrounded by a vast reservoir of matter composed of so-called massive compact halo objects (MACHOs).
Most are as exotic as the names their inventors have given them: massive compact halo objects (MACHOs), weakly interacting massive particles (WIMPs), axions, neutralinos, and wimpzillas.
Two independent teams of astronomers, one from the United States and Australia and the other from France, believe they have discovered Massive Compact Halo Objects (MACHOs).

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