Manoharan Universal Relations for Binary Neutron Star Mergers with Long-lived Remnants 9783658368401

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Автор: Manoharan
Название: Universal Relations for Binary Neutron Star Mergers with Long-lived Remnants
ISBN: 9783658368401
Издательство: Springer
Классификация:

Астрономия

Астрофизика

ISBN-10: 3658368403
Обложка/Формат: Soft cover
Страницы: 65
Вес: 0.12 кг.
Дата издания: 12.04.2022
Серия: BestMasters
Язык: English
Издание: 1st ed. 2022
Иллюстрации: 20 illustrations, black and white; xiv, 65 p. 20 illus.
Размер: 210 x 148 x 4
Читательская аудитория: Professional & vocational
Основная тема: Physics
Ссылка на Издательство: Link
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Поставляется из: Германии
Описание: In the last 25 years, an extensive body of work has developed various equation of state independent - or (approximately) universal - relations that allow for the inference of neutron star parameters from gravitational wave observations. These works, however, have mostly been focused on singular neutron stars, while our observational efforts at the present, and in the near future, will be focused on binary neutron star (BNS) mergers. In light of these circumstances, the last five years have also given rise to more attempts at developing universal relations that relate BNS pre-merger neutron stars to stellar parameters of the post-merger object, mostly driven by numerical relativity simulations. In this thesis a first attempt at perturbatively deriving universal relations for binary neutron star mergers with long-lived neutron star remnants is presented. The author succeeds in confirming previous results relating pre-merger binary tidal deformabilities to the f-mode frequency of the post-merger object. Combining this result with recent advances of computing the f-mode frequency of fast rotating neutron stars, he also derives a combined relation that relates the pre-merger binary tidal deformability of a BNS to the effective compactness of a long-lived neutron star remnant. Finally, he also proposes a direct relation between these quantities with improved accuracy.
Дополнительное описание: Introduction.- Related Work.- Theory.- Methodology.- Results.- Discussion & Conclusion.

Universal Relations for Binary Neutron Star Mergers with Long-lived Remnants, Manoharan