The impact of nuclear reactions on the neutron-star g-mode spectrum

A.R. Counsell*, Fabian Gittins, Nils Andersson

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

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 languageEnglish
Pages (from-to)1721–1729
Number of pages9
JournalMonthly Notices of the Royal Astronomical Society
Volume531
Issue number1
DOIs
Publication statusPublished - 25 May 2024
Externally publishedYes

Keywords

  • stars: interiors
  • stars: neutron
  • stars: oscillations

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