Tübinger Astrophysiker an Weltraummission der ESA beteiligt: Satellit durchsucht Weltall nach leuchtstarken Ereignissen
Astrophysiker der Universität Tübingen sind an einem neuen Projekt der europäischen Raumfahrtagentur ESA beteiligt: Als eines von drei Konzepten wurde die Mission „THESEUS“, bei der das Institut für Astronomie und Astrophysik (IAAT) eine wichtige Rolle spielt, in das Wissenschaftsprogramm aufgenommen. Der Satellit könnte 2032 starten und soll das frühe Universum erkunden, insbesondere die ersten 1,5 Milliarden Jahre nach dem Urknall.(more…)
Mit einer Förderung von zwei Millionen Euro will der Physiker Marc Schumann die Suche nach Dunkler Materie voranbringen
Sie macht etwa 25 Prozent des Weltalls aus und hält wie ein kosmischer Klebstoff einzelne Galaxien und ganze Galaxienhaufen zusammen – dabei hat sie noch nie jemand direkt gesehen: Dunkle Materie gehört zu den größten Geheimnissen des Universums. (more…)
Halloween has come and gone, but Yale physicist Bonnie Fleming still has ghosts in her machine.
On Oct. 15, Fleming and colleagues at the MicroBooNE physics experiment in Illinois detected their first neutrino candidates, which are also known as ghost particles. It represents a milestone for the project, involving years of hard work and a 40-foot-long particle detector that is filled with 170 tons of liquid argon.(more…)
From the physics labs at Yale University to the bottom of a played-out gold mine in South Dakota, a new generation of dark matter experiments is ready to commence.
The U.S. Department of Energy’s Office of Science and the National Science Foundation recently gave the go-ahead to LUX-Zeplin (LZ), a key experiment in the hunt for dark matter, the invisible substance that may make up much of the universe. Daniel McKinsey, a professor of physics, leads a contingent of Yale scientists working on the project. (more…)
Massive detector homes in on cosmic ray production
IceCube, an international collaboration involving University of Delaware scientists, is shedding new light on cosmic ray production.
Although cosmic rays were discovered 100 years ago, their origin remains one of the most enduring mysteries in physics. Now, the IceCube Neutrino Observatory, a massive detector in Antarctica, is homing in on how the highest energy cosmic rays are produced. (more…)
A U physicist will help determine if neutrinos can outrace light
Back in 2007, a physics experiment clocked elusive subatomic particles called neutrinos going faster than light.
That wasn’t supposed to happen. If the speed of light in a vacuum—denoted “c” by physicists—isn’t the universal speed limit, it would mean that Einstein put the wrong number in his famous E=mc2 equation.
University of Minnesota physicist Marvin Marshak was part of the experiment, called MINOS. It clocked beams of neutrinos shot from Fermilab, a national physics lab near Chicago, to a detector 457 miles away in the Soudan Underground Laboratory in northern Minnesota.(more…)
*Berkeley Lab researchers are leaders in an international effort to close in on neutrino mass*
Some of the most intriguing questions in basic physics focus on neutrinos. How much do the different kinds weigh and which is the heaviest? The answers lie in how the three “flavors” of neutrinos – electron, muon, and tau neutrinos – oscillate or mix, changing from one to another as they race virtually without interruption through unbounded reaches of matter and space.
Three mathematical terms known as “mixing angles” described the process, and the Daya Bay Reactor Neutrino Experiment has just begun taking data to establish the last, least-known mixing angle to unprecedented precision. China and the United States lead the international Daya Bay Collaboration, including participants from Russia, the Czech Republic, Hong Kong, and Taiwan. U.S. participation is led by the U.S. Department of Energy’s Lawrence Berkeley National Laboratory (Berkeley Lab). (more…)
The National Science Foundation has signed a five-year, $34.5-million agreement with the University of Wisconsin-Madison to operate a unique telescope–a cubic kilometer in volume–buried in the Antarctic ice sheet between 1,400 meters and 2,400 meters deep.
The collaborative agreement covers the cost of operating the IceCube Neutrino Observatory, located in the ice under the U.S. Amundsen-Scott South Pole Station. The observatory records the rare collisions of neutrinos, elusive sub-atomic particles, with the atomic nuclei of the water frozen into ice. Neutrinos come from the sun, cosmic rays interacting with the Earth’s atmosphere, and dramatic astronomical sources such as exploding stars in the Milky Way and other distant galaxies. Trillions of neutrinos stream through the human body at any given moment, but they rarely interact with regular matter, and researchers want to know more about them and where they come from. (more…)
