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Imaging the distribution of dark matter--anyone want to expand on this?
http://www.physorg.com/news85326859.html
just posted a few minutes ago
http://www.physorg.com/news85326859.html
just posted a few minutes ago
marcus said:
IBM said:Astron and IBM Team To Help Research the First Origins Of The Universe
ASTRON and IBM to Collaborate on a New Customized Chip Design to Help Build the World's Largest Radio Astronomy Telescope.
Amsterdam, The Netherlands and Armonk, NY - 06 Dec 2006:
ASTRON, one of the world's leading astronomy research organizations, today announced a new collaborative agreement with IBM (NYSE: IBM) focusing on the design, engineering and manufacturing of customized, high performance analogue and mixed signal processing chips. The high performance, low power usage customized chips will be used in thousands of antennas as part of ASTRON's project to build a new prototype radio telescope called SKADS/EMBRACE, which will be the precursor for the world’s largest radio astronomy telescope, the Square Kilometer Array (SKA) radio telescope. Financial terms are not being disclosed.
It seems to be a widely spread misconception that the bending of light provides "direct" evidence of dark matter. An observation of lightbending only indicates that something has to exist which causes the bending (which does not contain so much information :tongue: ). If one then ASSUMES that the lightbending is due to gravitation, one could infer the presence of unseen (dark) matter. Direct evidence of dark matter should be that one can interact with it, study it in particle accelerators, etc.marcus said:
Dark matter is a type of matter that does not emit or absorb light, making it invisible to telescopes. It is thought to make up about 85% of the total matter in the universe and is believed to play a crucial role in the formation and evolution of galaxies.
Studying the distribution of dark matter can help us understand the structure and evolution of the universe. It can also provide insights into the nature of dark matter, which is still largely unknown to scientists.
Scientists use a variety of techniques to image the distribution of dark matter, including gravitational lensing, galaxy rotation curves, and the study of galaxy clusters. These methods rely on the gravitational effects of dark matter on visible matter.
The biggest challenge in imaging dark matter is its elusive nature. Since it does not interact with light, it is difficult to detect and study. Additionally, dark matter is spread out in a diffuse manner, making it hard to map and measure accurately.
Understanding the distribution of dark matter can have a wide range of implications, from helping us better understand the evolution of the universe to potentially leading to new discoveries and technologies. It may also shed light on the fundamental laws of physics and help us solve mysteries such as the nature of dark energy.