All Articles Tagged As: dark matter
 | Brown University physicists have set the strongest limit for the mass of dark matter, the mysterious particles believed to make up nearly a quarter of the universe. The researchers report in Physical Review Letters that dark matter must have a mass greater than 40 giga-electron volts. The distinction is important because it casts doubt on recent results from underground experiments that have reported detecting dark matter. ...> Full Article |
 | Ohio State University researchers are leveraging powerful supercomputers to investigate one of the key observational probes of "dark energy." The project focuses on simulations created on Ohio Supercomputer Center systems to simplify and better characterize a subtle dark-matter clustering feature. The new model allows cosmologists to gain a more accurate understanding of certain aspects of large-scale structure, such as the effect of the expansion of the universe on the growth of density fluctuations. ...> Full Article |
Will dark matter turn out to be Weakly Interacting Massive Particles (WIMPs)? This week, an experiment deep in a mine added new and intriguing information about this theory. The scientist leading the research team -- Juan Collar, the Kavli Institute for Cosmological Physics, University of Chicago -- discusses the latest findings and their implications.
...> Full Article
 | A dark-matter experiment deep in the Soudan mine of Minnesota now has detected a seasonal signal variation similar to one an Italian experiment has been reporting for more than a decade. The new seasonal variation, recorded by the Coherent Germanium Neutrino Technology (CoGeNT) experiment, is exactly what theoreticians had predicted if dark matter turned out to be what physicists call weakly interacting massive particles (WIMPs). ...> Full Article |
The international XENON collaboration reports the best constraints to date on the properties of dark matter, the mysterious particles that may account for nearly 83 percent of all mass in the universe. The results represent the highest sensitivity dark matter search yet with background noise 100 times lower than competing efforts.
...> Full Article
Weizmann Institute scientists participate in the most sensitive search yet for dark matter candidates called WIMPs.
...> Full Article
Physicists are closer than ever to finding the source of the Universe's mysterious dark matter, following a better than expected year of research at the Compact Muon Solenoid particle detector, part of the Large Hadron Collider at CERN in Geneva.
...> Full Article
Physicists at the University of British Columbia and TRIUMF have proposed a unified explanation for dark matter and the so-called baryon asymmetry -- the apparent imbalance of matter with positive baryon charge and antimatter with negative baryon charge in the Universe.
...> Full Article
 | This month physicists are taking their attempt to unmask the secret identity of dark matter into a Canadian mine more than a mile underground. They are deploying a 4-kilogram bubble chamber at SNOLab, which is part of the Sudbury Neutrino Observatory in Ontario, Canada. A second 60-kilogram chamber will follow later this year. ...> Full Article |
 | Using observations with NASA's Chandra X-ray Observatory and ESA's XMM-Newton, astronomers have announced a robust detection of a vast reservoir of intergalactic gas about 400 million light years from Earth. This discovery is the strongest evidence yet that the "missing matter" in the nearby Universe is located in an enormous web of hot, diffuse gas. ...> Full Article |
University of Minnesota professors who played a significant role in the Large Hadron Collider research are available for comment on the project's latest milestone.
...> Full Article
 | In an attempt to explain away invisible dark matter and dark energy, some theorists have offered modified theories of gravity that try to improve on Einstein's General Theory of Relativity. A new study based on the Sloan Digital Sky Survey and inspired by the work of Lawrence Berkeley National Laboratory cosmologist Uros Seljak indicates that at least one of these alternate theories is wrong. ...> Full Article |
 | Astronomers from the United States and Europe have used a gravitational lens -- a distant, light-bending clump of dark matter -- to make a new estimate of the Hubble constant, which determines the size and age of the universe. ...> Full Article |
Scientists offer new insights into dark matter, for more than 70 years as mysterious and unknowable a subject to science as the legendary island of Atlantis has been to history.
...> Full Article
 | Queen's University Professor Wolfgang Rau is among a group of 60 scientists involved in the Cryogenic Dark Matter Search experiment whose latest findings are published in the latest edition of Science magazine. Professor Rau says the project is among the top two or three most important experiments on this subject in the world. ...> Full Article |
Physicists may have glimpsed a particle that is a leading candidate for mysterious dark matter but say conclusive evidence remains elusive.
...> Full Article
A detailed picture of the seeds of structures in the universe has been unveiled by an international team co-led by a Cardiff University scientist.
...> Full Article
Researchers from US and European universities and institutions are collaborating on plans to build an enormous WIMP detector, in hopes of finding the stuff of dark matter. The 20-ton liquid xenon experiment is proposed as a major experiment for the Deep Underground Science and Engineering Laboratory, a national lab planned for the former Homestake Mine beneath the Black Hills of South Dakota.
...> Full Article
 | A team of researchers from the University of Zaragoza and the Institut d'Astrophysique Spatiale has developed a "scintillating bolometer", a device that the scientists will use in efforts to detect the dark matter of the Universe, and which has been tested at the Canfranc Underground Laboratory in Huesca, Spain. ...> Full Article |
Calibration tool will reveal when hypothetical particles are detected
...> Full Article
While most of the instruments at the Spallation Neutron Source are dedicated to materials and condensed-matter studies, the Fundamental Neutron Physics Beam Line will explore questions in nuclear physics.
...> Full Article
Researchers are working on an experiment that will sit in an abandoned South Dakota goldmine, looking for evidence of dark matter.
...> Full Article
 | Researchers inherit one of the world's most exciting research projects when it comes to understanding dark matter and the nature of the universe. ...> Full Article |
 | A race is on in Case Western Reserve University's physics department and around the world to be the first research group to capture signals from WIMPs (weakly interactive massive particles)-the substance that comprises dark matter. ...> Full Article |
 | Scientists working on the COUPP experiment at the Department of Energy's Fermi National Accelerator Laboratory have announced a new development in the quest to observe dark matter. The Chicagoland Observatory for Underground Particle Physics experiment tightened constraints on the "spin-dependent" properties of WIMPS, weakly interacting massive particles that are candidates for dark matter. Their results, combined with the findings of other dark matter searches, contradict the claims for the observation of such particles by the Dark Matter experiment (DAMA) in Italy and further restrict the hunting ground for physicists to track their dark matter quarry. ...> Full Article |
Einstein's self-proclaimed "biggest blunder" - his postulation of a cosmological constant (a force that opposes gravity and keeps the universe from collapsing) - may not be such a blunder after all, according to the research of an international team of scientists that includes two Texas A&M University researchers.
...> Full Article
 | We've all been taught that our bodies, the Earth, and in fact all matter in the universe is composed of tiny building blocks called atoms. Now imagine if this weren't the case. This mind-bending concept is at the core of the scientific research that researchers all over the world—are pursuing. ...> Full Article |
| 
Subscribe
New species of ancient crocodile discovered
Kitchen gadget inspires scientist to make more effective plastic electronics
Making memories last
Ferroelectric switching discovered for first time in soft biological tissue
Forensic research extends detection of cyanide poisoning
The wild early lives of today's most massive galaxies
What really happened prior to 'Snowball Earth'?
Shakespeare's skill 'more in grammar than in words'
Detailed picture of how myoV 'walks' along actin tracks
Need muscle for a tough spot? Turn to fat stem cells
Earth's energy budget remained out of balance despite unusually low solar activity
Pictures of food create feelings of hunger
Mighty mesh
Sweeten up your profits with the right hybrid
Patterns of antibiotic-resistant bacteria found in Galapagos reptiles
Bilayer graphene works as an insulator
Patterns of chromosome abnormality: The key to cancer?
Advantages of living in the dark: The multiple evolution events of 'blind' cavefish
Snakes improve search-and-rescue robots
Enhancing cognition in older adults also changes personality
Magnetic actuation enables nanoscale thermal analysis
A new artificial intelligence technique to speed the planning of tasks when resources are limited
'Tiger mothers' should tame parenting approach
Film coatings made from whey
Growing US violent extremism by the numbers
If a fat tax is coming, here's how to make it efficient, effective
Bobsled runs -- fast and yet safe
Fruit fly intestine may hold secret to the fountain of youth
Bright lights of purity
How seawater could corrode nuclear fuel
Does antimatter weigh more, less or the same as matter?
Scientists create first atomic X-ray laser
Jupiter's 'Trojans' on an atomic scale
World's longest superconductor cable