Sentences with phrase «by dark matter»

Smaller galaxies would have a weaker gravitational hold on this material, so they could end up dominated by dark matter, which would be unaffected by the explosions.

All the evidence seemed to support the idea that the extra gamma rays were caused by dark matter.

The extra gravity is supplied by the dark matter.

Now, he and colleagues show that the universe does indeed appear to be dominated by dark matter.

The actual announcement was disappointing, however: just two pulses were detected over almost a year, and they might have been caused by dark matter.

Citing the case of a dim object called Willman 1, he says: «If we could unambiguously say that it is held together by dark matter, nobody would debate if it is a galaxy.»

«In this map, we can see galaxies being gravitationally pulled towards other galaxies by dark matter.

«But there has been the possibility it could decay through new particles predicted by dark matter theories, such as supersymmetry.

That match, with only a 1 - in - 100,000 chance of being caused by a statistical error, virtually eliminates any possibility that B - sub-s meson decay is related to interaction with particles predicted by dark matter theories, as some physicists have suspected.

Finkbeiner speculates the source may be electrons given off by dark matter in our galaxy or extraneous emission that accompanied the release of the microwave background in the primordial universe.

Every Ordinary Matter Object in this Universe is surrounded by Dark Matter about 10 times its mass!

If the new force does exist, we might soon be able to see its effects on things influenced by dark matter, such as the behaviour of black holes or the masses of the first stars, says Douglas Finkbeiner of Harvard University, who was not involved in the new study.

It is able to look for even higher - energy electrons and positrons, numbers of which should suddenly drop off if they are caused by dark matter annihilations, but not if caused by pulsars.

What's more, the visible stuff of galaxies is dwarfed by dark matter, and each galaxy is racing away from the others due to an even more mysterious entity: dark energy.

For instance, Simpson says, a theory known as Modified Newtonian Dynamics is no longer supported by the dark matter data.

Assuming the results are right, there are a few theories to explain how galaxies like NGC 1052 - DF2 could come together untouched by dark matter's hidden hand.

Perhaps just as incredible, the clouds of hot interstellar gas formerly contained by the galaxies — and superheated by the collision so they glow in x-ray light — seem to have been grabbed by the dark matter instead of being flung into space.

A further complicating factor is that craters are formed by comet and asteroid impacts, but only comets originate in the Oort cloud and so are far enough out to be diverted by dark matter.

These measurements showed that the visible matter only accounts for a fraction of the total weight, the predominant part is delivered by dark matter.

The «flattening» of galaxy rotation speeds, discovered by the astronomer Vera Rubin in the 1970s, is widely considered to be Exhibit A in the case for dark matter — explained, in that paradigm, by dark matter clouds or «halos» that surround galaxies and give an extra gravitational acceleration to their outlying stars.

The results are consistent with the modulation in signals first recorded more than a decade ago by the DArk MAtter / Large sodium Iodide Bulk for RAre processes (DAMA / LIBRA) experiment at Gran Sasso, Italy.

Her hometown of Mumbai was ravaged by a dark matter plague and she joined to help her vow for revenge on LEGION while searching for a cure.

Performance by Dark Matters, «Manifestation Machine,» 2016; Multi-media installation; Dimensions variable.

Peter Blake's 3D Circus was produced and published by Dark Matter Studio in 2013 and the last few in the edition are available through One Church Street Gallery.

In typical galaxies, normal matter is swamped by dark matter, an unidentified invisible substance that makes up most of the matter in the universe.

The dark matter distribution was measured by the weak gravitational lensing of the light from visible galaxies by the dark matter (see the relativity chapter).

Again, we assume that we do not live at a special time, so to have kept the very fast moving particles around, there needs to be extra gravity supplied by the dark matter.

Ever - more detailed studies of the cosmic microwave background support the picture of a cosmos that began in an inflationary big bang dominated by dark matter and dark energy

The remaining six are thought to be globular clusters, which are similar to dwarf galaxies but are not held together by dark matter.

Photomultiplier tubes within the detector, shown above, detect light produced in interactions possibly caused by dark matter particles.

Whether the variations are caused by dark matter or something else, however, remains unclear.

«The Big Bang model sets the initial conditions for structure formation and explains our presence in an expanding universe dominated by dark matter and energy.»