Universal relations for binary neutron star mergers with long-lived remnants / Praveen Manoharan.
Manoharan, Praveen.
2022
QB812
Available Online

Linked e-resources

Linked Resource Online Access
Concurrent users Unlimited
Authorized users Authorized users
Document Delivery Supplied Can lend chapters, not whole ebooks

Details

Title Universal relations for binary neutron star mergers with long-lived remnants / Praveen Manoharan.
Author Manoharan, Praveen.
ISBN 9783658368418 (electronic bk.)
3658368411 (electronic bk.)
3658368403
9783658368401
DOI https://doi.org/10.1007/978-3-658-36841-8
Published Wiesbaden : Springer Spektrum, 2022.
Language English
Description 1 online resource (77 pages).
Item Number 10.1007/978-3-658-36841-8 doi
Call Number QB812
Dewey Decimal Classification 523.8/874
Summary 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 Tubingen University, Institute for Theoretical Astrophysics.
Bibliography, etc. Note Includes bibliographical references.
Access Note Access limited to authorized users.
Source of Description Online resource; title from PDF title page (SpringerLink, viewed April 11, 2022).
Series BestMasters.
Available in Other Form Universal Relations for Binary Neutron Star Mergers with Long-Lived Remnants
Linked Resources Online Access
Record Appears in Online Resources > Ebooks
All Resources
Intro
Abstract
Contents
Abbreviations & Notation
List of Figures
List of Tables
1 Introduction
1.1 Problem Statement
1.2 Outline
2 Related Work
2.1 Neutron Star Oscillation Modes
2.1.1 Non-rotating Neutron Stars
2.1.2 Rotating Neutron Stars
2.2 Tidal Deformability
2.2.1 Relations Between Tidal Deformability and Oscillation Modes
2.3 Other Universal Relations
2.4 Binary Neutron Stars
2.4.1 Binary Love Relations
2.4.2 Effective Tidal Deformability and Chirp Mass
2.4.3 Tidal Coupling Constant
2.4.4 High Resolution Simulations

2.5 Discussion
3 Theory
3.1 Neutron Star Equilibrium Model and TOV Equations
3.2 Neutron Star Bulk Properties
3.3 Tidal Deformability of Neutron Stars
3.3.1 The Tidal Love Number
3.3.2 Computing the Tidal Love Number
3.3.3 Binary Tidal Deformability
3.4 Quasi-normal Modes of Neutron Stars
3.4.1 Quasi-normal modes of Rotating Neutron Stars
3.5 Goodness of Fit and Error Estimates
4 Methodology
4.1 Data Set of Rotating Neutron Stars
4.2 Relating Tidal Deformability to f-mode Frequency
4.3 Binary Neutron Star Mergers
4.3.1 Post-merger Remnant
5 Results

5.1 Revisiting Existing Universal Relations
5.2 Universal Relations for Single Neutron Stars
5.3 f-mode Relations for BNS Mergers
5.3.1 Co-rotating f-mode
5.3.2 Counter-rotating f-mode
5.4 Combined eta Relation for BNS Mergers
5.5 Direct eta Relation for BNS Mergers
5.5.1 Direction Relation with soft EoSs
5.5.2 Reintroducing stiff EoSs
5.6 Direct Relation with Constraints
6 Discussion & Conclusion
6.1 Future Directions
A Bibliography

Browse Subjects

Show more subjects...

Statistics

from
to
Export