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School and society

The department of physics and astronomy offers information to and cooperation with the society in various ways, such as organizing exhibitions and demonstrations to schools and the general public, taking part in various working groups within our respective fields of research and by performing commissioned research and education (see links to the left).

Read more in Swedish.

Created 2008-06-10 12:10.
Last updated 2011-12-08 18:27.
Editor: Staffan Jacobsson Svärd

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Current seminars

The Aquarius stream is not really a stream at all

Speaker: 
Andy Casey
Department: 
Mount Stromlo Observatory, ANU, Australia
Time: 
2013-05-23 14:00 - 14:45
Location: 
Hiorter's room (Å73101)
Type : 
Astronomy and Space Physics

The Aquarius stream is a nearby (~5-10 kpc) stellar stream that was discovered as part of the RAVE spectroscopic survey. Since the group is co-moving, the default assumption is that it has been accreted onto the Milky Way by a disrupted satellite. Early indications from the RAVE spectra suggested there was a wide metallicity dispersion for the Aquarius group, whereas more recent follow-up observations have found very little dispersion in metallicity (~0.10 dex) and enhanced [Na/Fe], [Ni/Fe] abundance ratios.

Beam diagnostic instruments at 3rd and 4th generation light sources.

Speaker: 
Kay Wittenburg
Department: 
Deutsches Elektronen-Synchroton DESY
Time: 
2013-05-23 15:15 - 16:15
Location: 
Room 12167
Type : 
Nuclear and Particle Physics

Ring and LINAC (FEL) based x-ray sources provide ultra-high brilliant photon beams to the experiments. These 3rd and 4th generation light sources require high resolution and reliable electron beam diagnostics to ensure very stable conditions at the experiments. This talk will discuss the different beam diagnostic needs of these accelerators and will compare theirs typical instruments. Examples from PETRAIII, the European XFEL and FLASH at DESY in Hamburg will be given.