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Condensed Matter Physics Seminar

Condensed Matter Physics Seminar

Dr Romain Danneau, Karlsruhe Institute of technology, Germany

Friday 27 February 2015, 1500-1600
C1 Physics Building

Quantum transport in bilayer graphene-boron nitride van der Waals heterostructures

Space Science Seminar: Galactic Cosmic Rays: Probes for Space Weather and Climate

Space Science Seminar: Galactic Cosmic Rays: Probes for Space Weather and Climate

Doctor Simon Thomas, Space Plasma Group, Mullard Space Science Laboratory

Friday 06 March 2015, 1600-1700
Cavendish Colloquium Room

Galactic cosmic rays are extremely high energy, charged particles that are accelerated at extra-solar sources such as supernovae, active galactic nuclei, quasars, and gamma-ray bursts. They are modulated by enhancements and inhomogenities within the heliospheric magnetic field. Upon arrival at Earth's atmosphere, they produce a shower of secondary particles, some of which result in energetic neutrons which can be detected at ground level. On centennial and millennial time scales, traces of...

Space Science Seminar: Particle Precipitation into the Polar Atmosphere

Space Science Seminar: Particle Precipitation into the Polar Atmosphere

Professor Craig Rodger, Department of Physics, University of Otago, New Zealand

Tuesday 10 March 2015, 1600-1700
Bowland North Seminar Room 20

The space around the Earth is filled with fast moving particles trapped in two "belts" by our magnetic field. The belts were named the "Van Allen radiation belts" in 1958 honour of their discoverer, James Van Allen. Earth-orbiting satellites can be damaged or even lost due to increased high-energy electron fluxes in the Earth's radiation belts. Electron fluxes are highly variable, with fluxes changing by many orders of magnitudes on time-scales of hours to days, due to competing acceleration...