The seminar will be held in a mixed mode
1) Speaker: N.N. Chugai (INASAN)
Title: “Efficiency of cosmic ray acceleration in supernovae IIn”
Abstract: A dominant fraction of cosmic rays (CR) with energies less than 1 PeV is accelerated in shock waves of supernovae and supernova remnants. Yet neither theoretically nor observationally the conversion efficiency of the shock wave kinetic energy into the CR is estimated. I propose to recover the CR acceleration efficiency in supernovae IIn from the Halpha spectral line formed in a dense circumstellar gas. Method is based on the effect of the velocity increase of the circumstellar gas in a preshock zone due to the pressure of a relativistic precursor formed by the CR accelerated in the shock wave.
2) Speaker: N.E. Piskunov (INASAN; Uppsala University)
Title: “First observations of transiting exoplanets with the new infrared spectrometer CRIRES+ at the 8m ESO telescope.”
Abstract: see Russian version