Sentences with phrase «galactic centre»

They orbit around galactic centres like satellites — the Milky Way, for example, hosts over 150 of them.

But given its mass and distance, it should be bright enough to have been seen by now, he says, although it could be obscured by the bright galactic centre.

The galactic centre is a crowded place, however, so observers will have to slog though «a rainforest of sources» to sieve out lensed images, says Petters.

After moving towards the hole for 20,000 years, the gas cloud finally reached the galactic centre.

This result reflects what astronomers see close to the galactic centre, where there seem to be very few lightweight stars.

The Milky Way has multiple spiral arms, long curved streams of gas and stars stretching out from the galactic centre.

They could come from pulsars that are spinning at crazy speeds or from supernovae at the galactic centre.

«It increases the consistency of the picture that dark matter may be causing all three different classes of emissions being seen in the galactic centre,» says Kevork Abazajian, one of the researchers behind the discovery, which was presented to the International Fermi Symposium in Nagoya, Japan on 22 October.

One shows a glow from the galactic centre that may be caused by particles of dark matter colliding and then annihilating around the black hole there.

«I agree with the authors that dark matter seems to be a reasonable interpretation of this signal,» says Dan Hooper at the Fermi National Accelerator Laboratory in Illinois, who was a member of the first group to see a signal that looked like dark matter annihilation at the galactic centre.

«Bringing this whole picture together, it's looking less and less likely that you can bring together the idea that the galactic centre excess is dark matter annihilation,» she says.

And when they examined data from all - sky surveys of starlight, they saw exactly the expected signal at the galactic centre.

Physicists saw this sort of emission from the galactic centre in 2013, and now Abazajian and his colleagues have strengthened that evidence.

«It provides a totally new window into understanding what is going on in the galactic centre emissions,» he says.

«We're really exploring the galactic centre in a way that we might not have been able to do if we hadn't been checking out these signals looking for dark matter,» she says.

«If the dwarf limits were this strong in 2010 - 12 when we first started working on the dark matter interpretation of the galactic centre excess, we may have not taken it as seriously,» he says.

They showed that you would also expect starlight passing through the galactic centre to be deflected off electrons left over from dark matter annihilation, producing a third gamma ray signal.

These include expanding shells and rings of material around the galactic centre, and evidence of streams of gas being ejected from the galactic core.

Signs of exactly this kind of particle are showing up as an excess of gamma rays coming from the galactic centre, says Dan Hooper at the Fermilab in Batavia, Illinois.

While normally hidden behind obscuring dust, the infrared capabilities of VISTA allow to study the stars close to the galactic centre.

Sharma worked out how the speed of circular orbits changed with distance from the galactic centre (called the rotation curve).

«Inside — closer to the galactic centre — the disk should be puffed up and the stars there would have higher vertical velocities.

While there is little to «see» in the usual sense of that word, our galactic centre is home to a black hole more than...

On their travels about the galactic centre, they are affected by the gravity of other clusters, as well as by large clouds of gas that they pass close to.

«The other hypervelocity velocity stars discovered so far are all at least consistent with coming from the galactic centre,» Portegies Zwart says.

Along with these complex stellar characteristics are those of our Milky Way; the whole central bulge rotates around the galactic centre.

Or possibly even be the result of a jet from the galactic centre.

But ATIC has detected 200 times more potential dark matter than WMAP did at the galactic centre.

If future observations confirm that neutrinos are accelerated to high energies by activity at the galactic centre, the same source could explain high - energy cosmic rays — although it's still unclear exactly how the accelerator works.

This globular cluster is thought to have once been it's own galaxy and all that is left is the galactic centre, with, possibly, a black hole.

The radial distribution, when plotted as a function of distance from the galactic centre, fits a mathematical expression of a form identical to the one describing the star distribution in elliptical galaxies.

Refusing to brand itself as an action game, it offers millions of procedurally generated worlds to investigate, each with its own wildlife and geology, as well as a mysterious «galactic centre» for players to discover.