The aim of the workshop is to bring together theoretical astrophysicists, observers and nuclear physicist to discuss future prospects of (non-)universal relations of neutron stars.

Neutron star properties depend sensitively on the modeling EOS and there are new observational facilities available and under development to restrict the realistic EoS. Surprisingly, relations between certain properties of neutron were found recently to be approximately universal, i.e., independent of the EoS. For example, the relation between the spin, the moment of inertia, and the quadrupole moment are independent of the chosen EoS up to an accuracy of less than one percent. Currently, it is an active field of research to identify the realm of validity of such universal relations in terms of the complexity of the neutron star model, to find the underlying physical reason, and to explore observational consequences including effects from alternative theories of gravity.

The workshop (Non-)Universal Properties of Neutron Stars is devoted to this field of research and will be held from 18th to 20th May 2015 at the Center of Applied Space Technology and Microgravity (ZARM) in Bremen Germany. It includes a meeting of the working group “Gravitational physics theory and observations” of the Cost action NewCompStar.