Sentences with phrase «dark matter halo around»

Brown says that the movements of these stars could reveal the shape of the dark matter halo around our galaxy.

That's a simulated map of the dark matter halo around galaxy cluster Cl 0024 +17, superimposed on a Hubble picture.

Not exact matches

Faced with flat rotation curves that seemed to flout Newton's laws, astronomers assumed the existence of a halo of dark matter around every spiral galaxy.

In clusters, too, dark matter seems to form a massive halo around the bright parts.

Among other sources of such radiation, scientists have proposed that interactions between bits of dark matter (which make up a large fraction of the universe's mass but haven't yet been directly detected) in a halo around the galactic center may be creating the surplus gamma rays.

They argue that the brown dwarfs are in fact members of a much smaller spherical distribution of matter around the centre of the Galaxy, which they call the spheroid in order to avoid confusion with the extended dark halo.

The gravitational influence of this mass will appear similar to extended «dark matter haloes» around galaxies.

This dark matter, which must be distributed in a spherical «halo» around the luminous disc of a galaxy, would have to contain about ten times as much mass as the visible material.

Dark matter resides in the halos around those galaxies, and was also known to spread from those denser areas in filaments.

Some are found in globular clusters, but most move in a huge cloud around the disk called the galactic halo, which has a luminous inner component defined by globular star clusters and other easily observable stars (with coronae of hot gas possibly expelled by supernovae and of high - velocity neutron stars) and an outer dark - matter component inferred from its gravitational impact on the Milky Way's spiral disk.