The group's main objective is to explore the origin and structure of cosmic magnetic fields and their impact on galaxy development.
Funded for an initial three-years-period with a total of 1.9 million Euros, the researchers will employ the world's first digital and at the same time largest telescope "LOFAR" as well as supercomputer simulations to analyze the telescope observations. The Jacobs research team under the lead of Marcus Brüggen, Professor of Astrophysics, receives about 200,000 Euros of the project money.
Astrophysicists have known for quite a while that the gas between the stars of a galaxy as well as the cosmic medium between galaxies is magnetized, generating giant magnetic fields that vary in size between ten and several millions of light years in diameter. However, very little is known about their origin and the impact they have on the development of galaxies.
The key to the analysis of these magnetic fields in outer space is the so-called synchrotron radiation of electrons, which is generated by the electrons' orbital acceleration at near light-speed through these magnetic fields. The electrons were charged with the energy necessary for such radiation through shock waves of cosmic "catastrophes" like supernova explosions, collisions of galaxies or even whole galaxy clusters. The radiation pattern of the electrons, which reflects the stars' or galaxies' history, thus becomes a marker for surveying and interpreting the magnetic fields from Earth, which would otherwise not be possible.
Central to the effective and sensitive detection of the cosmic synchrotron radiation is the newly constructed digital telescope LOFAR (acronymic for Low Frequency ARay). While classical radio telescopes collect cosmic radiation with motor-operated dish-like antennae, which scan different areas of space with computer-controlled movements, LOFAR does not require any moving parts. It consists of a set of simple, small radio antennae fixed to the ground that are spread all over Europe. One antenna station, constructed by Jacobs University, is positioned close to the German city of Jülich.
All data coming in from the different antenna locations are correlated by one of the world's fastest supercomputers located in Groningen (The Netherlands). This way, the array of antennae acts like a giant radio-telescope with an equivalent dish-size of several hundred kilometres in diameter, which not only provides the telescope with a so far unparalleled sensitivity. It also enables astronomers to scan space in several directions at the same time. The interpretation of LOFAR's measurements within the scope of the DFG research unit will be accomplished by supercomputer simulations.
The DFG consortium's other research partners, besides Jacobs University and the University of Bonn, are the Ruhr University Bochum, the Astrophysical Institute Potsdam, die Ludwig Maximilian's University Munich, the Max-Planck Institute for Astrophysics in Garching, the Max Planck Institute for Radio Astronomy in Bonn, and the Thüringer Landessternwarte Tautenburg.Contact at Jacobs University:
Dr. Kristin Beck | idw
NASA detects solar flare pulses at Sun and Earth
17.11.2017 | NASA/Goddard Space Flight Center
Pluto's hydrocarbon haze keeps dwarf planet colder than expected
16.11.2017 | University of California - Santa Cruz
The formation of stars in distant galaxies is still largely unexplored. For the first time, astron-omers at the University of Geneva have now been able to closely observe a star system six billion light-years away. In doing so, they are confirming earlier simulations made by the University of Zurich. One special effect is made possible by the multiple reflections of images that run through the cosmos like a snake.
Today, astronomers have a pretty accurate idea of how stars were formed in the recent cosmic past. But do these laws also apply to older galaxies? For around a...
Just because someone is smart and well-motivated doesn't mean he or she can learn the visual skills needed to excel at tasks like matching fingerprints, interpreting medical X-rays, keeping track of aircraft on radar displays or forensic face matching.
That is the implication of a new study which shows for the first time that there is a broad range of differences in people's visual ability and that these...
Computer Tomography (CT) is a standard procedure in hospitals, but so far, the technology has not been suitable for imaging extremely small objects. In PNAS, a team from the Technical University of Munich (TUM) describes a Nano-CT device that creates three-dimensional x-ray images at resolutions up to 100 nanometers. The first test application: Together with colleagues from the University of Kassel and Helmholtz-Zentrum Geesthacht the researchers analyzed the locomotory system of a velvet worm.
During a CT analysis, the object under investigation is x-rayed and a detector measures the respective amount of radiation absorbed from various angles....
The quantum world is fragile; error correction codes are needed to protect the information stored in a quantum object from the deteriorating effects of noise. Quantum physicists in Innsbruck have developed a protocol to pass quantum information between differently encoded building blocks of a future quantum computer, such as processors and memories. Scientists may use this protocol in the future to build a data bus for quantum computers. The researchers have published their work in the journal Nature Communications.
Future quantum computers will be able to solve problems where conventional computers fail today. We are still far away from any large-scale implementation,...
Pillared graphene would transfer heat better if the theoretical material had a few asymmetric junctions that caused wrinkles, according to Rice University...
15.11.2017 | Event News
15.11.2017 | Event News
30.10.2017 | Event News
17.11.2017 | Physics and Astronomy
17.11.2017 | Health and Medicine
17.11.2017 | Studies and Analyses