Abstract
Mature neutron stars are expected to exhibit gravity g modes due to stratification caused by a varying matter composition. These modes are affected by nuclear reactions, leading to complex (damped) mode frequencies and the suppression of high-order g modes. This is in contrast with the common non-dissipative analysis which leads to an infinite g-mode spectrum. Focusing on the transition between the fast- and slow-reaction regimes, we examine the precise impact of nuclear reactions on the g-mode spectrum. The general framework for the analysis is presented along with sample numerical results for a matter model based on the BSk21 equation of state with a suitable parametrization for the reaction rates.
Original language | English |
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Pages (from-to) | 1721–1729 |
Number of pages | 9 |
Journal | Monthly Notices of the Royal Astronomical Society |
Volume | 531 |
Issue number | 1 |
DOIs | |
Publication status | Published - 25 May 2024 |
Externally published | Yes |
Keywords
- stars: interiors
- stars: neutron
- stars: oscillations