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In a new study by the IceCube, Pierre Auger, and Telescope Array Collaborations, VUB scientists have looked for correlations between the highest energy neutrino candidates in IceCube and the highest energy CRs in these two cosmic-ray observatories. The results, submitted today to the Journal of Cosmology and Astroparticle Physics, have not found any correlation at discovery level. However, potentially interesting results have been found and will continue to be studied in future joint analyses.
A team of astronomers using ESO’s Very Large Telescope (VLT) has captured the most detailed images ever of the hypergiant star VY Canis Majoris. These observations show how the unexpectedly large size of the particles of dust surrounding the star enable it to lose an enormous amount of mass as it begins to die. This process, understood now for the first time, is necessary to prepare such gigantic stars to meet explosive demises as supernovae. Prof. Joris Blommaert (Astronomy and Astrophysics Research Group, VUB) is co-author of the paper presenting the results of the observations.
The Astronomy and Astrophysics Research Group of the Vrije Universiteit Brussel (VUB) in Belgium is hiring 2 PhD researchers and 1 postdoctoral researcher in radio detection of cosmic particles with the LOFAR radio telescope. The research program is funded by the European Research Council (ERC).
Together with the universities from Wisconsin and Delaware and the Observatoire de Paris, Gwenhaël de Wasseige and the team of the Vrije Universiteit Brussel have developed a totally new way to search for these interesting neutrinos by using satellite data.
Today, CERN's Large Hadron Collider (LHC) started delivering physics data for the first time in 27 months. After an almost two year shutdown and several months re-commissioning, the LHC is now providing collisions to all of its experiments at the unprecedented energy of 13 TeV, almost double the collision energy of its first run. This marks the start of season 2 at the LHC, opening the way to new discoveries. The LHC will now run round the clock for the next three years.
Geneva, 13 May 2015. In an article published today in Nature, the CMS and LHCb collaborations, including physicists from the VUB particle physics department, describe the first observation of the very rare decay of the B0s particle into two muon particles. The Standard Model, the theory that best describes the world of particles, predicts that this rare subatomic process happens about four times out of a billion decays, but it has never been seen before. These decays are studied as they could open a window to theories beyond the Standard Model, such as supersymmetry. The analysis is based on data taken at the Large Hadron Collider (LHC) in 2011 and 2012. These data also contain early hints of a similar, but even more rare decay into two muons of the B0, a cousin of the B0s.
Geneva, 12 December 2014. CERN announced today at the 174th session of the CERN Council that the Large Hadron Collider (LHC) is gearing up for its second three-year run. The LHC is the largest and most powerful particle accelerator in the world and the whole 27-kilometre superconducting machine is now almost cooled to its nominal operating temperature of 1.9 degrees above absolute zero. All teams, including the VUB particle physicists working in the Interuniversity Institute for High Energies are at work to get the LHC and CMS back online. Run 2 of the LHC will start in March 2015 and follows a 2-year technical stop that prepared the machine for running at almost double the energy of the LHC’s first run.
Geneva, 20 November 2014. CERN1 launched today its Open Data Portal where data from real collision events, produced by the LHC experiments will for the first time be made openly available to all. It is expected that these data will be of high value for the research community, and also be used for education purposes.
”Launching the CERN Open Data Portal is an important step for our Organization. Data from the LHC programme are among the most precious assets of the LHC experiments, that today we start sharing openly with the world. We hope these open data will support and inspire the global research community, including students and citizen scientists,” said CERN Director General Rolf Heuer.
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