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Träfflista för sökning "WFRF:(Hauschildt Peter H.) srt2:(2003)"

Sökning: WFRF:(Hauschildt Peter H.) > (2003)

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1.
  • Niessen, Peter, et al. (författare)
  • Recent results from the amanda experiment
  • 2003
  • Ingår i: Proceedings of 38th Rencontres de Moriond on Electroweak Interactions and Unified Theories 15-22 Mar 2003. Les Arcs, France.
  • Konferensbidrag (refereegranskat)abstract
    • AMANDA (Antarctic Muon And Neutrino Detector Array) is a neutrino telescope built under the southern polar icecap and its scope is to explore the possibility to detect high energy cosmic neutrinos. This should generate insight into the powerful celestial objects where acceleration mechanisms can bring up to 10 20   eV. We describe the achievements and results from the AMANDA-B10 prototype and the preliminary results from the current AMANDA-II detector which show dramatic increase in sensitivity.
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2.
  • Ludwig, Hans-Günter, et al. (författare)
  • Convection and Dust in Cool Stellar Atmospheres
  • 2003
  • Ingår i: Stars as Suns: Activity, Evolution and Planets, International Astronomical Union. Symposium no. 219, held 21-25 July, 2003 in Sydney, Australia, meeting abstract. ; 219, s. 41-41
  • Konferensbidrag (refereegranskat)abstract
    • We report on recent progress in hydrodynamical modelling of the surfacelayers of late M- and L-type main- as well as pre-main-sequence objects.Despite the complex chemistry encountered in the cool atmospheres ofsuch objects a reasonably accurate representation of the radiativetransfer is possible - even within time-dependent multi-dimensionalmodels. The detailed treatment of the interplay between radiation andconvection in the hydrodynamical models allows us to study processesusually not accessible within the framework of conventional modelatmospheres. In particular we derive the efficiency of the convectiveenergy transport expressed in terms of an equivalent mixing-lengthparameter e.g. suitable to construct global stellar structure models.The models also provide an estimate of convective overshooting into theatmospheric layers which are formally stable according to theSchwarzschild criterion. Preliminary brown dwarf models incorporatingthe atmospheric condensation transport and evaporation of dust cloudswill be presented.
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