https://doi.org/10.1140/epjst/e2020-000108-4
Regular Article
Estimating compressibility from maximal-mass compact star observations
1
Wigner Research Centre for Physics,
P.O. Box,
1525
Budapest, Hungary
2
Institute of Physics, Eötvös University,
1/A Pázmány P. Stny.,
1117
Budapest, Hungary
a e-mail: barnafoldi.gergely@wigner.hu
Received:
5
June
2020
Accepted:
27
October
2020
Published online: 21 December 2020
We investigated recent observation data of pulsar masses of PSR J0740+6620, PSR J0348+0432, and PSR J1614−2230 based on the extended σ-ω model. We assumed that these pulsars are maximal mass compact star, which suggest that the core approximation can be applied. Using the linear relations between the microscopic and macroscopic parameters of neutron stars suggested by this model, we estimated the values of the nucleon Landau mass and nuclear compressibility mL=776.0−84.9+38.5 MeV and K=242.7−28.0+57.2 MeV, respectively.
© The Author(s) 2020
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Open access funding provided by ELKH Wigner Research Centre for Physics.
