Conveners
Wednesday - Session 4: Astronomical Observations with Light, X-Ray, Gamma-Ray, and Cosmic-Ray
- Diep Pham Ngoc (Vietnam National Space Center)
Elements heavier than iron-group are produced by rapid and slow neutron-capture processes (r-process and s-process) in the universe. The site of the processes and history of the enrichment in the Milky Way Galaxy have been studied by spectroscopic observations of stars with different ages and population (Galactic disks, halo etc.). I will review the abundance studies of neutron-capture...
Signatures of stellar material affected by neutron-capture processes were not completely diluted in the early Solar System and are still found recorded in meteorites. These fingerprints of neutron captures range from radioactive isotopes produced by neutron captures, to stardust from asymptotic giant branch stars and core-collapse supernovae, as well as widespread highly diluted, but still...
Photon vortices caring orbital angular momentum (OAM) [1] with a wave function of Laguerre Gaussian (LG) wave or Bessel wave are one of the most interesting topics in various fields of physics. The interaction between a photon vortex and a material such nucleus may be different from that with standard photons because the photon vortex is the eigen-state of the z-component of the total angular...
Galactic feedback driven by massive stars and active galactic nuclei (AGNs) plays a fundamental role in regulating galaxy formation and evolution. In particular, intense starburst episodes could generate strong outflows able to suppress star formation (SF) by expelling large amount of dust and metals out of the galaxies, possibly enriching their circum (or even inter) galactic media. Galactic...