{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,10,12]],"date-time":"2025-10-12T01:41:03Z","timestamp":1760233263720,"version":"build-2065373602"},"reference-count":17,"publisher":"MDPI AG","issue":"1","license":[{"start":{"date-parts":[[2022,12,24]],"date-time":"2022-12-24T00:00:00Z","timestamp":1671840000000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"Czech Science Foundation","award":["21-24281S"],"award-info":[{"award-number":["21-24281S"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Symmetry"],"abstract":"<jats:p>Within the scope of the Symmetry journal special issue on: \u201cThe Nuclear Physics of Neutron Stars\u201d, we complemented the nuclear equation of state (EoS) with a hypothetical 17 MeV boson and observed that only instances with an admixture of 30%\u201340% satisfy all of the constraints. The successful EoS resulted in a radius of around 13 km for a neutron star with mass MNS\u22481.4M\u2299 and in a maximum mass of around MNS\u22482.5M\u2299. The value of the radius is in agreement with the recent measurement by NICER. The maximum mass is also in agreement with the mass of the remnant of the gravitational wave event GW190814. Thus, it appears that these EoSs satisfy all of the existing experimental constraints and can be considered as universal nuclear equations of state.<\/jats:p>","DOI":"10.3390\/sym15010049","type":"journal-article","created":{"date-parts":[[2022,12,27]],"date-time":"2022-12-27T04:58:01Z","timestamp":1672117081000},"page":"49","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":4,"title":["Universal Nuclear Equation of State Introducing the Hypothetical X17 Boson"],"prefix":"10.3390","volume":"15","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-7803-0109","authenticated-orcid":false,"given":"Martin","family":"Veselsk\u00fd","sequence":"first","affiliation":[{"name":"Institute of Experimental and Applied Physics, Czech Technical University, 110 00 Prague, Czech Republic"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-5575-6476","authenticated-orcid":false,"given":"Vlasios","family":"Petousis","sequence":"additional","affiliation":[{"name":"Institute of Experimental and Applied Physics, Czech Technical University, 110 00 Prague, Czech Republic"}]},{"given":"Jozef","family":"Leja","sequence":"additional","affiliation":[{"name":"Faculty of Mechanical Engineering, Slovak University of Technology in Bratislava, 812 31 Bratislava, Slovakia"}]},{"given":"Laura","family":"Navarro","sequence":"additional","affiliation":[{"name":"Department of Physics and Mathematics, University of Zaragoza, 50009 Zaragoza, Spain"}]}],"member":"1968","published-online":{"date-parts":[[2022,12,24]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"042501","DOI":"10.1103\/PhysRevLett.116.042501","article-title":"Observation of Anomalous Internal Pair Creation in 8Be: A Possible Indication of a Light, Neutral Boson","volume":"116","author":"Krasznahorkay","year":"2016","journal-title":"Phys. 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