Scientists have confirmed that intrinsic alignments of galaxies can probe dark matter and dark energy on a cosmological scale, supporting general relativity at vast spatial scales. However, the nature of dark energy and cosmic acceleration remains unresolved. Einstein would nod in approval. Gener
By gathering evidence that the distribution of galaxies more than tens of millions of light years away is subject to the gravitational effects of dark matter, the team succeeded in testing general theory of gravity at vast spatial scales. The international team analyzed the positions and orientations of galaxies, acquired from archived data of 1.2 million galaxy observations.
“We have also successfully measured the rate at which the galaxy distribution gradually becomes denser due to gravity, which is consistent with the general theory of relativity,” says Teppei Okumura of the Academia Sinica Institute of Astronomy and Astrophysics. The archived data — obtained from the Sloan Digital Sky Survey and the Baryon Oscillation Spectroscopic Survey — consists of three galaxy samples selected for their brightness and distance. In addition, 3D positions and shape information for each galaxy helped to measure the magnitude of alignment relative to distant galaxies.
Australia Latest News, Australia Headlines
Similar News:You can also read news stories similar to this one that we have collected from other news sources.
Weird dark matter waves seem to warp the light from distant galaxiesUltralight dark matter particles that behave like waves, called axions, seem to be a better match for gravitational lensing measurements than more traditional explanations for dark matter
Read more »
The First Light in the Universe Helps Build a Dark Matter MapThe Atacama Cosmology Telescope (ACT) collaboration used years of cosmic microwave background data to create a new map of Dark Matter.
Read more »
When to Cut the Cord on an Emotionally Distant RelationshipDesperation and fear can cause someone to rationalize away a partner's wishy-washy behavior in the hopes that they'll one day change. Here are 2 signs that is unlikely to happen.
Read more »
African penguins: Climate refugees from a distant past?Imagine the view from the western coastline of southern Africa during the Last Glacial Maximum (LGM) over 20,000 years ago: In the distance you would see at least 15 large islands—the largest 300 square kilometers in area—swarming with hundreds of millions of marine birds and penguin colonies.
Read more »
Astrophysicists Spot Einstein Rings That Boost Case for Axionic Dark MatterSignatures of gravitational lensing in images of distant galaxies suggest the presence of wave-like dark matter.
Read more »
AMC Expanding Anne Rice's Immortal Universe with Talamasca SeriesAMCNetworks is looking to expand AnneRice's InterviewWithTheVampire & MayfairWitches universe with a third series, focusing on the Talamasca. / IWTV Lestat ImmortalUniverse AMCTV AMCPlus
Read more »