Featured Research

from universities, journals, and other organizations

Cosmological Simulations Key To Understanding The Universe

Date:
February 22, 2009
Source:
Carnegie Mellon University
Summary:
Physicists are harnessing the power of supercomputing to recreate how galaxies are born, how they develop over time and, ultimately, how they collapse. Scientists are creating computer simulations to better understand the physics of black holes and the role they play in galaxy formation.

Tiziana Di Matteo, associate professor of physics at Carnegie Mellon University is harnessing the power of supercomputing to recreate how galaxies are born, how they develop over time and, ultimately, how they collapse.

Working with machines at Carnegie Mellon's Bruce and Astrid McWilliams Center for Cosmology and the Pittsburgh Supercomputing Center, Di Matteo crafts computer simulations to better understand the physics of black holes and the role they play in galaxy formation. The superior computing power available using computers like the Cray XT3 system allow Di Matteo to input the extensive calculations necessary to incorporate black hole physics into such simulations. In fact, such computing power has enabled Di Matteo to complete the most detailed and accurate recreation of the evolution of the universe to date.

The simulation begins with conditions seen at the birth of the universe as evidenced by observed cosmic microwave background radiation. Seeded with a quarter of a billion particles that represent everyday measurable matter, and factoring in gravity exerted by dark matter and other forces associated with various cosmic phenomena, including cooling gas, growing black holes and exploding stars, the simulation progresses, providing snapshots of galaxy development in frames of half a million years each. Strung together, the frames create a movie of cosmic evolution over the past 14 billion years. The high-resolution afforded to the researchers by the state-of-the-art computers allows them to zoom into a particular event in the galaxies formation, like the formation of a black hole.

Using data from such simulations, Di Matteo and colleagues have been able to get a better understanding of the role black holes play in galaxy regulation. The researchers hope that the theoretical simulations can be used to aid observational astrophysics by helping to predict what the next-generation telescopes should see as they peer back to the Big Bang, and by providing guidance to observational astrophysicists as they look to locate the earliest cosmic events and untangle the origins of the universe.

Di Matteo presented an overview of her cosmological simulations as part of the "Big, Small, and Everything in Between: Simulating Our World Using Scientific Computing" session at the 2009 American Association for the Advancement of Science (AAAS) Annual Meeting in Chicago.


Story Source:

The above story is based on materials provided by Carnegie Mellon University. Note: Materials may be edited for content and length.


Cite This Page:

Carnegie Mellon University. "Cosmological Simulations Key To Understanding The Universe." ScienceDaily. ScienceDaily, 22 February 2009. <www.sciencedaily.com/releases/2009/02/090217092750.htm>.
Carnegie Mellon University. (2009, February 22). Cosmological Simulations Key To Understanding The Universe. ScienceDaily. Retrieved July 29, 2014 from www.sciencedaily.com/releases/2009/02/090217092750.htm
Carnegie Mellon University. "Cosmological Simulations Key To Understanding The Universe." ScienceDaily. www.sciencedaily.com/releases/2009/02/090217092750.htm (accessed July 29, 2014).

Share This




More Space & Time News

Tuesday, July 29, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Russia Saves Gecko Sex Satellite, Media Has Some Fun With It

Russia Saves Gecko Sex Satellite, Media Has Some Fun With It

Newsy (July 27, 2014) — The satellite is back under ground control after a tense few days, but with a gecko sex experiment on board, the media just couldn't help themselves. Video provided by Newsy
Powered by NewsLook.com
NASA EDGE: OCO-2 Launch

NASA EDGE: OCO-2 Launch

NASA (July 25, 2014) — NASA EDGE webcasts live from Vandenberg AFB for the launch of the Oribiting Carbon Observatory-2 (OCO) launch. Video provided by NASA
Powered by NewsLook.com
This Week @ NASA, July 25, 2014

This Week @ NASA, July 25, 2014

NASA (July 25, 2014) — Apollo 11 celebration, Next Giant Leap anticipation, ISS astronauts appear in the House and more... Video provided by NASA
Powered by NewsLook.com
Space to Ground: Coming and Going

Space to Ground: Coming and Going

NASA (July 25, 2014) — One station cargo ship leaves, another arrives, aquatic research and commercial spinoffs. Questions or comments? Use #spacetoground to talk to us. Video provided by NASA
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
 
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:  

Breaking News:
from the past week

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:  

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile iPhone Android Web
Follow Facebook Twitter Google+
Subscribe RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins