Feeds

Stargazers spot dark energy

Still real, we think

Intelligent flash storage arrays

The distribution of galaxies and the time it takes for galactic clusters to form are behind a University of Queensland claim confirming the existence of dark energy.

Dark energy has been predicted as a defender of Einsteinian models of the universe, ever since the 1990s when astrophysicists identified the accelerating expansion of the universe.

Since the “inflationary universe” didn’t fit with Einstein’s predictions, either Einstein was wrong, or a new form of energy was required.

The great physicist had once recast his equations to include a similar idea, but wasn’t comfortable with the solution and later called it his “greatest blunder”.

The UQ researchers worked with 26 astronomers from 14 institutions in a project conducted at the Anglo-Australian Telescope. The “WiggleZ Dark Energy Survey” mapped the distribution of 200,000 galaxies.

This, according to Professor Michael Drinkwater from the QU School of Mathematics and Physics, is “the first individual galaxy survey to span such a long stretch of cosmic time”.

Generally, supernovae are used as the basis of galactic measurement. This survey instead mapped the distance between galactic clusters, since pairs of galaxies have a statistical preference for being separated by a distance of 490 million light years.

This measurement was used to confirm measurements made using supernova brightness.

The researchers worked with NASA’s Galaxy Evolution Explorer. Along with Professor Drinkwater, the WiggleZ survey was led by Swinburne University’s Dr Christ Blake, Professor Warwick Couch and Professor Karl Glazebrook. ®

Intelligent flash storage arrays

More from The Register

next story
MARS NEEDS WOMEN, claims NASA pseudo 'naut: They eat less
'Some might find this idea offensive' boffin admits
LOHAN crash lands on CNN
Overflies Die Welt en route to lively US news vid
Comet Siding Spring revealed as flying molehill
Hiding from this space pimple isn't going to do humanity's reputation any good
Experts brand LOHAN's squeaky-clean box
Phytosanitary treatment renders Vulture 2 crate fit for export
No sail: NASA spikes Sunjammer
'Solar sail' demonstrator project binned
Carry On Cosmonaut: Willful Child is a poor taste Star Trek parody
Cringeworthy, crude and crass jokes abound in Steven Erikson’s sci-fi debut
Origins of SEXUAL INTERCOURSE fished out of SCOTTISH LAKE
Fossil find proves it first happened 385 million years ago
prev story

Whitepapers

Cloud and hybrid-cloud data protection for VMware
Learn how quick and easy it is to configure backups and perform restores for VMware environments.
A strategic approach to identity relationship management
ForgeRock commissioned Forrester to evaluate companies’ IAM practices and requirements when it comes to customer-facing scenarios versus employee-facing ones.
High Performance for All
While HPC is not new, it has traditionally been seen as a specialist area – is it now geared up to meet more mainstream requirements?
Three 1TB solid state scorchers up for grabs
Big SSDs can be expensive but think big and think free because you could be the lucky winner of one of three 1TB Samsung SSD 840 EVO drives that we’re giving away worth over £300 apiece.
Security for virtualized datacentres
Legacy security solutions are inefficient due to the architectural differences between physical and virtual environments.