The accuracy of astrophysical observations regarding compact stars are ahead of a big evolution jump thanks to instruments like
NICER [1], which will increase the accuracy of the measurements. The discovery of gravitational waves originating from merging
neutron stars in this year
(GW170817 [2]) is the first step to use gravitational waves as a probe for extremely dense nuclear matter. Despite these
developments the masquarade problem still persists in modeling cold superdense nuclear matter based on compact star
observables. Since many different models yield similar neutron star parameters only high-precision measurements and theoretical
reasons can exclude models. In this talk an introduction is given for the nuclear physics of neutron stars.
The connection between the measurable properties of neutron stars and properties of nuclear matter are explained and
challenges of modeling neutron star matter are explored.
References
[1] NASA 2017, Nicer, https://www.nasa.gov/nicer
[2] Ligo/Virgo 2017, Phys. Rev. Lett., 119, 161101
[3] Barnaföldi G. G., Jakovac A., Posfay P., 2017, Phys. Rev., D95, 025004
[4] Pósfay P. Barnaföldi G.G., A. Jakovác, arXiv:1710.05410, arXiv:1610.03674
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