25-29 June 2018
UTC timezone

Transport Phenomena in Neutron Star Cores

26 Jun 2018, 17:00
Beta (Barcelona)




Mr Stephan Stetina (TU Vienna)


Multi-messenger observations of neutron stars are likely to usher in a golden age of nuclear astrophysics and promote neutron stars to one of the most interesting “laboratories” in the universe. Transport in the outer core of neutron stars determines a number of observable phenomena, including the damping of hydrodynamic modes, r-modes and the spin evolution of neutron stars. In the core of a neutron star we expect to find a dense plasma comprised of electrons, muons, protons and neutrons interacting via electromagnetic and strong forces. The complicated interplay of these interactions lead to screening and damping effects which have a profound impact on the spectra of photons within the plasma. The photon spectrum in turn strongly modifies the scattering rate of fermions in the plasma and therefore the transport. I will provide a detailed study of the photon spectrum and scattering rates based on the relativistic Random Phase Approximation (RPA), placing a particular focus on dynamical screening effects and collective modes. Potential repercussions on the interpretation of future observations of neutron stars will be discussed.

Primary author

Mr Stephan Stetina (TU Vienna)

Presentation Materials

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