Core–Corona Decomposition of Very Compact (Neutron) Stars: Accounting for Current Data of XTE J1814-338
A core–corona decomposition of compact (neutron) star models was compared with the current mass–radius data of the outlier XTE J1814-338. The corona (which may also be dubbed the envelope, halo or outer crust) is assumed to be of Standard Model matter, with an equation of state that is supposed to b...
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2025-06-01
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| author | Rico Zöllner Burkhard Kämpfer |
| author_facet | Rico Zöllner Burkhard Kämpfer |
| author_sort | Rico Zöllner |
| collection | DOAJ |
| description | A core–corona decomposition of compact (neutron) star models was compared with the current mass–radius data of the outlier XTE J1814-338. The corona (which may also be dubbed the envelope, halo or outer crust) is assumed to be of Standard Model matter, with an equation of state that is supposed to be faithfully known and accommodates nearly all other neutron star data. The core, solely parameterized by its mass, radius and transition pressure, presents a challenge regarding its composition. We derived a range of core parameters needed to describe the current data of XTE J1814-338. |
| format | Article |
| id | doaj-art-59a4987aaeec4557ae72aed33607c35e |
| institution | Kabale University |
| issn | 2674-0346 |
| language | English |
| publishDate | 2025-06-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Astronomy |
| spelling | doaj-art-59a4987aaeec4557ae72aed33607c35e2025-08-20T03:27:09ZengMDPI AGAstronomy2674-03462025-06-01421010.3390/astronomy4020010Core–Corona Decomposition of Very Compact (Neutron) Stars: Accounting for Current Data of XTE J1814-338Rico Zöllner0Burkhard Kämpfer1Institut für Technische Logistik und Arbeitssysteme, TU Dresden, 01062 Dresden, GermanyHelmholtz-Zentrum Dresden-Rossendorf, 01314 Dresden, GermanyA core–corona decomposition of compact (neutron) star models was compared with the current mass–radius data of the outlier XTE J1814-338. The corona (which may also be dubbed the envelope, halo or outer crust) is assumed to be of Standard Model matter, with an equation of state that is supposed to be faithfully known and accommodates nearly all other neutron star data. The core, solely parameterized by its mass, radius and transition pressure, presents a challenge regarding its composition. We derived a range of core parameters needed to describe the current data of XTE J1814-338.https://www.mdpi.com/2674-0346/4/2/10compact starscore–corona decompositionimpact of core massdark matter admixture |
| spellingShingle | Rico Zöllner Burkhard Kämpfer Core–Corona Decomposition of Very Compact (Neutron) Stars: Accounting for Current Data of XTE J1814-338 Astronomy compact stars core–corona decomposition impact of core mass dark matter admixture |
| title | Core–Corona Decomposition of Very Compact (Neutron) Stars: Accounting for Current Data of XTE J1814-338 |
| title_full | Core–Corona Decomposition of Very Compact (Neutron) Stars: Accounting for Current Data of XTE J1814-338 |
| title_fullStr | Core–Corona Decomposition of Very Compact (Neutron) Stars: Accounting for Current Data of XTE J1814-338 |
| title_full_unstemmed | Core–Corona Decomposition of Very Compact (Neutron) Stars: Accounting for Current Data of XTE J1814-338 |
| title_short | Core–Corona Decomposition of Very Compact (Neutron) Stars: Accounting for Current Data of XTE J1814-338 |
| title_sort | core corona decomposition of very compact neutron stars accounting for current data of xte j1814 338 |
| topic | compact stars core–corona decomposition impact of core mass dark matter admixture |
| url | https://www.mdpi.com/2674-0346/4/2/10 |
| work_keys_str_mv | AT ricozollner corecoronadecompositionofverycompactneutronstarsaccountingforcurrentdataofxtej1814338 AT burkhardkampfer corecoronadecompositionofverycompactneutronstarsaccountingforcurrentdataofxtej1814338 |