Professor in Experimental Astroparticle Physics
Phone +46 (0) 8 55378668
Fax +46 (0)8 55378601
e-mail hulth @ physto.se
Research Activities
I am working in the field of experimental astroparticle physics with the telescopes for cosmic neutrinos, earlier with AMANDA and nowdays with IceCube, at the South Pole in Antarctica (see even the homepage of Icecube). We are using the neutrino particles to learn more about the Universe. Among the unsolved questions we are trying to solve are what the dark matter in the universe consists of and the sources of the ultrahigh energy cosmic rays. A layout of the AMANDA detector can be found in AMANDA-II picture. AMANDA was closed down in May 2008 after nine years of succsesful running.
The IceCube telescope consists of 86 strings with 60 optical module each. On top of the ice an air shower detector for cosmic rays, IceTop, is installed. The optical modules are deployed between 1450 m and 2450 m depth. The last detector string was deployed in December the 18th 2010 and the full detector started to take data in May 2011.
In the centre of the detector six extra strings have been added to get in total 13 strings with a spacing of 72 m instead of the standard 125 m. This part is called DeepCore and will detect neutrinos of lower energies which is important when searching for neutrinos from dark matter annihilations in the Earth and the Sun, neutrino oscillations etc.
See an animation of IceCube
Recent talks
High Energy Neutrino Telescopes presented at the XIV International Conference on Calorimetry in High Energy Physics CALOR2010, May 10-14 2010, Beijing, China (pdf, ppt)
Neutrino Telescopes presented at Lepton Photon 2009, August 17-22 Hamburg, Germany (pdf, ppt)
From AMANDA to IceCube presenterat vid "III International workshop on: Neutrino oscillations in Venice" February 7-10, 2006, Venedig (pdf, ppt)
Cosmic neutrinos and High Energy Neutrino telescopes Lecture 1(ppt) Lecture 2 (ppt) given at at the 19'th Nordic Particle Physics Meeting at Spåtind, Norway, 4-10 January 2006
Ultra High Energy Neutrino telescopes presented at Photon-Lepton 2005, Jine-July 2005, Uppsala (ppt)
Ett uppochnedvänt teleskop infryset vid Sydpolen, Polar day at Royal Swedish Academy of Sciences February 4th 2004 (pdf)
Particle Astronomy from Antarctica, IAU XXV, Sydney 13-26 July 2003 (ppt)
Popular articles
Dark Matter, Neutrinos and the South Pole presentation at the "Science day" vid Borgarskolan i Malmö, 28 maj 2010 (pdf, ppt)
High Energy Neutrinos from the Cosmos article for the Nobel Prize web page (mars 2005)
Neutriner som budbärare från Kosmos (together with Christian Walck) för Kosmos 2003 (Swedish Physical Society) (pdf)
Publications
List P.O.Hulth publications