Blick ins Buch

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

Praveen Manoharan (Autor)

Buch | Softcover

XIV, 65 Seiten

2022 | 1st ed. 2022
Springer Fachmedien Wiesbaden GmbH (Verlag)
978-3-658-36840-1 (ISBN)

Lese- und Medienproben

Inhaltsverzeichnis (PDF)

Artikel merken

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.

About the author Praveen Manoharan is PhD student at Tübingen University, Institute for Theoretical Astrophysics.

Introduction.- Related Work.- Theory.- Methodology.- Results.- Discussion & Conclusion.

Erscheinungsdatum	31.03.2022
Reihe/Serie	BestMasters
Zusatzinfo	XIV, 65 p. 20 illus.
Verlagsort	Wiesbaden
Sprache	englisch
Maße	148 x 210 mm
Gewicht	116 g
Themenwelt	Naturwissenschaften ► Physik / Astronomie ► Astronomie / Astrophysik
Schlagworte	Binary Neutron Star Merger • General relativity • neutron star • perturbation theory • Theoretical Astrophysics • Universal Relations
ISBN-10	3-658-36840-3 / 3658368403
ISBN-13	978-3-658-36840-1 / 9783658368401
Zustand	Neuware