Astrophysicists draw most comprehensive map of the universe -- ScienceDaily
The spherical map of galaxy superclusters will lead to a greater understanding of how matter is distributed in the universe and provide key insights into dark matter, one of physics' greatest mysteries.
Professor Mike Hudson, Jonathan Carrick and Stephen Turnbull, of the Department of Physics and Astronomy at the University of Waterloo, and Guilhem Lavaux the Institute d'Astrophysique de Paris of the Centre national de la recherche scientifique of France, created the map. Professor Hudson is also an affiliate member of the Perimeter Institute for Theoretical Physics.
"The galaxy distribution isn't uniform and has no pattern. It has peaks and valleys much like a mountain range. This is what we expect if the large-scale structure originates from quantum fluctuations in the early universe," said Hudson, also associate dean of science, computing.
The map appears online in the peer-review journal, Monthly Notices of the Royal Astronomical Society, one of the world's leading primary research journals for astronomy and astrophysics.
The lighter blue and white areas on the map represent greater concentrations of galaxies. The red area is the supercluster called the Shapley Concentration, the largest collection of galaxies in the nearby universe. Unexplored areas appear in medium blue.
Knowing the location and motion of matter in the universe will help astrophysicists predict the universe's expansion and identify where and how much dark matter exists.
Scientists have observed that galaxies move differently because the universe's expansion is not even. These differences are called peculiar velocities. Our own Milky Way galaxy and its neighbour Andromeda are moving with a speed of 2 million kilometres per hour.
Previous models haven't fully accounted for this observed motion. Hudson and his team are interested in discovering what structures are responsible for the peculiar velocities.
These deviations in the motion of galaxies are a valuable tool to determine the distribution of matter and dark matter on the largest scales.
Dark matter accounts for a large majority of the mass content in the universe. It is a hypothesized form of matter particle that does not reflect or emit light and as a result it can't be seen or measured directly. The existence and properties of dark matter can only be inferred indirectly through its gravitational effects on visible matter and light.
"A better understanding of dark matter is central to understanding the formation of galaxies and the structures they live in, such as galaxy clusters, superclusters and voids," said Hudson.
The next step will involve getting more detailed samples of peculiar velocities to enhance the map, in collaboration with researchers in Australia.
Welcome to SUV System Ltd!
SUV System Ltd is ISO 90012008 Certified electronics distributor with 10 years of experiences.
We have built up long term business relationship with about many companies which are stockers and authorized agents. we have a steady and reliable supply to meet customer's demands to the greatest extent .Confidently, we are able to lower your cost and support your business with our years of professional service.
SUV System Ltd is Electronic Components Distributor Supplies,Find Quality Electronic Components Supplies Products IC(Integrated Circuits),Connectors,Capacitor,Resistors,Diodes,Transistors,LED at Suvsystem.com. Sourcing Other Energy, Environment, Excess Inventory Products from Manufacturers and Suppliers at Suvsystem.com
Electronic Components distributor:http://www.suvsystem.com
Connectors Distributor:http://www.suvsystem.com/l/Connectors-1.html
IC Distributor:http://www.suvsystem.com/l/IC(Integrated-Circuits)-1.html
LED Distributor:http://www.suvsystem.com/l/LED-1.html
Capacitor Distributor:http://www.suvsystem.com/l/Capacitor-1.html
Transistor Distributor:http://www.suvsystem.com/l/Transistors-1.html
Resistor Distributor:http://www.suvsystem.com/l/Resistors-1.html
Diode Distributor:http://www.suvsystem.com/l/Diodes-1.html
SUV System Ltd insists on the managing faith ofsincereness,speciality,foresight, win-win,so we build up stable-relationship customers located all over the world, including the States, Europe, Argentina, UAE, Malaysia, Australia,and India etc
we are focus on the following fields,and hope we can help you.
ROHM Resistors Other Parts YAGEO Resistors Switches MOTOROLA IC Resistor Arrays LINEAR IC Schottky Diodes Switching Diodes IR Diodes Thick Film Resistors INFLNEON Diodes INTERSIL IC VISHAY IC Dialight LED NXP Transistors Atmel IC chip Filter saws ON Diodes MAXIM IC Metal Can Packages Transistors Diodes Inc Resistor Networks LITTELFUSE Diodes FAIRCHILD diodes Ligitek LED TI IC Cypress IC IC(Integrated Circuits) AGILENT LED ST Transistors Discrete Semiconductor Transistors High Precision Resistors Texas Instruments(TI) IC NS IC AVX Resistors PANASONIC About US Kingbrigt LED ON Transistors
http://www.suvsystem.com/a/44601.aspx
