Dark matter and dark energy may be different aspects of a single unknown force

Message boards : SETI@home Science : Dark matter and dark energy may be different aspects of a single unknown force
Message board moderation

To post messages, you must log in.

AuthorMessage
Profile Thierry Van Driessche
Volunteer tester
Avatar

Send message
Joined: 20 Aug 02
Posts: 3083
Credit: 150,096
RAC: 0
Belgium
Message 7084 - Posted: 12 Jul 2004, 18:04:50 UTC
Last modified: 20 Jul 2004, 12:29:57 UTC

In the last few decades, scientists have discovered that there is a lot more to the universe than meets the eye: the cosmos appears to be filled with not just one, but two invisible constituents –dark matter and dark energy – whose existence has been proposed based solely on their gravitational effects on ordinary matter and energy.
Now, theoretical physicist Robert J. Scherrer has come up with a model that could cut the mystery in half by explaining dark matter and dark energy as two aspects of a single unknown force. His model is described in a paper titled "Purely Kinetic k Essence as Unified Dark Matter" published online by Physical Review Letters on June 30 and available online at http://arxiv.org/abs/astro-ph/0402316.

"One way to think of this is that the universe is filled with an invisible fluid that exerts pressure on ordinary matter and changes the way that the universe expands," says the professor of physics at Vanderbilt University.

According to Scherrer, his model is extremely simple and avoids the major problems that have characterized previous efforts to unify dark matter and dark energy.

The rest of the story can be read here.

Greetings from Belgium.
ID: 7084 · Report as offensive
Profile Liberto [Valencia]
Avatar

Send message
Joined: 24 Jul 01
Posts: 131
Credit: 29,008
RAC: 0
Spain
Message 7392 - Posted: 13 Jul 2004, 21:02:08 UTC - in response to Message 7084.  


> The rest of the story can be read <a> href="http://www.eurekalert.org/pub_releases/2004-07/vu-dma063004.php">here[/url].
>
> Greetings from Belgium.
>
>

Well if you want to read more about the same:
http://www.space.com/scienceastronomy/mystery_monday_040712.html
ID: 7392 · Report as offensive
Profile Thierry Van Driessche
Volunteer tester
Avatar

Send message
Joined: 20 Aug 02
Posts: 3083
Credit: 150,096
RAC: 0
Belgium
Message 11528 - Posted: 23 Jul 2004, 20:17:28 UTC
Last modified: 24 Jul 2004, 10:17:23 UTC

Sorry, wrong thread. Had to be post here.
ID: 11528 · Report as offensive
Mjöllnir
Avatar

Send message
Joined: 3 Apr 99
Posts: 46
Credit: 0
RAC: 0
Germany
Message 12317 - Posted: 25 Jul 2004, 11:08:44 UTC

thanks Thierry
ID: 12317 · Report as offensive

Message boards : SETI@home Science : Dark matter and dark energy may be different aspects of a single unknown force


 
©2024 University of California
 
SETI@home and Astropulse are funded by grants from the National Science Foundation, NASA, and donations from SETI@home volunteers. AstroPulse is funded in part by the NSF through grant AST-0307956.