Time, Place:

11:15 ,Seminarraum 242, Bothe-Labor

Speaker:

Dr. Sergey Bragin, MPIK

Title:

Electron-positron annihilation into one and two photons in an intense laser field

Time, Place:

15:00 ,Central seminar room, library building

Speaker:

Dr. Yeunhwan Lim, TU Darmstadt/MPIK

Title:

Nuclear Equation of State for Hot Dense Matter

Nuclear equation of state (EOS) is constructed with energy density functional (EDF)and liquid drop model (LDM) technique.Compared with the classical LDM approach containing alpha particle,deutron, triton, and helio are added to construct nuclear EOS. Energy density functional parameters are constrained by theoretical neutronmatter calculation, symmetric nuclear matter properties, and maximum mass ofneutron stars. The nuclear surface tension and the critical temperature necessary for the free energy of finite nuclei are calculated in a consistent way.In this talk, I will present and discuss the current results obtained from LDM and EDF with most recent parameters.

Time, Place:

11:15 ,Grosser Hoersaal/Big Lecture Hall (library)

Speaker:

Dr. Babette Dobrich, CERN, Geneva

Title:

Axion and ALP searches at different masses

Time, Place:

11:15 ,Seminarraum 242, Bothe Lab

Speaker:

Dr. Laura Bandiera, Istituto Nazionale di Fisica Nucleare (INFN), Section of Ferrara, Italy

Title:

High-energy electromagnetic processes in intense crystalline fields: recent experimental results and possible applications

Time, Place:

14:00 ,Central seminar room, library building

Speaker:

Prof. Mark Krumholz, ANU, Australia

Title:

Cosmic Rays Across the Star-Forming Galaxy Sequence

In this talk I present models for the interaction of cosmic rays withthe neutral, star-forming gas that dominates the mid-planes of MilkyWay-type and larger galaxies. I discuss the mechanisms of cosmic raytransport in this gas, and show that the process can best be describedas Alfvénic streaming combined with a field line random walk. Transportby this mechanism resolves a number of outstanding puzzles about thegamma-ray spectra of starburst galaxies; in particular, it naturallyexplains why these galaxies show a break in spectral slope at ~TeVenergies, without the need to adopt ad hoc advective escape times orinvoke breaks in the cosmic ray injection spectrum. I then work throughthe implications of this mechanism for the importance of cosmic rays assources of pressure support or wind driving in the disks of star-forminggalaxies, showing that cosmic rays cannot be dynamically important instarbursts, but may become so in Milky Way-mass or smaller galaxies.

Time, Place:

15:00 ,Central seminar room, library building

Speaker:

Damian Müll, MPIK

Title:

Metastable states of the silicon anion observed in CSR

Time, Place:

11:15 ,Grosser Hoersaal/Big Lecture Hall (library)

Speaker:

Prof. Rob E. G. Timmermans, Faculty of Science and Engineering, University of Groningen

Title:

EDMs: particle physics for the poor