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Error Quantification and Mitigation for Numerical Compact Binary Waveforms
Error Quantification and Mitigation for Numerical Compact Binary Waveforms
상세정보
- 자료유형
- 학위논문 서양
- 최종처리일시
- 20260202104756
- ISBN
- 9798290657325
- DDC
- 530
- 서명/저자
- Error Quantification and Mitigation for Numerical Compact Binary Waveforms
- 발행사항
- [Sl] : California Institute of Technology, 2025
- 발행사항
- Ann Arbor : ProQuest Dissertations & Theses, 2025
- 형태사항
- 88 p
- 주기사항
- Source: Dissertations Abstracts International, Volume: 87-01, Section: B.
- 주기사항
- Advisor: Teukolsky, Saul;Scheel, Mark;Most, Elias.
- 학위논문주기
- Thesis (Ph.D.)--California Institute of Technology, 2025.
- 초록/해제
- 요약Gravitational wave analysis requires waveform models to compare with observed signals from compact binaries. These models are based on and validated by numerical relativity waveforms---waveforms output from codes developed to numerically evolve the Einstein field equations. The efficacy of numerical waveforms for analysis is limited by error from both numerical and astrophysical sources. This thesis makes two contributions to the quantification and mitigation of this error.Chapter 2 describes a new algorithm for eccentricity reduction, the process of determining initial conditions for quasicircular binary orbits. This iterative procedure requires a measurement of eccentricity based on an early-inspiral trajectory. We find that the use of nonlinear fitting techniques such as variable projection leads to vastly improved consistency in eccentricity measurements.Finally, Chapter 3 presents an in-depth quantification of error in numerical binary neutron star waveforms from three vastly different numerical relativity codes. We find that overall these codes produce consistent binary neutron star evolutions, but that further accuracy improvements will be required for analysis of next-generation gravitational wave detector signals.
- 일반주제명
- Physics
- 일반주제명
- Gravity
- 일반주제명
- Interferometry
- 일반주제명
- Neutrons
- 일반주제명
- Lasers
- 일반주제명
- Black holes
- 일반주제명
- Neutron stars
- 일반주제명
- Orbits
- 일반주제명
- Spacetime
- 일반주제명
- Codes
- 일반주제명
- Gravitational waves
- 일반주제명
- Theory of relativity
- 일반주제명
- Error analysis
- 일반주제명
- Fluid mechanics
- 일반주제명
- Radiation
- 일반주제명
- Parameter estimation
- 기타저자
- California Institute of Technology Physics Mathematics and Astronomy
- 기본자료저록
- Dissertations Abstracts International. 87-01B.
- 전자적 위치 및 접속
- 로그인 후 원문을 볼 수 있습니다.
MARC
008260126s2025 us c eng d■001000017358819
■00520260202104756
■006m o d
■007cr#unu||||||||
■020 ▼a9798290657325
■035 ▼a(MiAaPQ)AAI32151386
■035 ▼a(MiAaPQ)Caltech17372
■040 ▼aMiAaPQ▼cMiAaPQ
■0820 ▼a530
■1001 ▼aHabib, Sarah Mary.
■24510▼aError Quantification and Mitigation for Numerical Compact Binary Waveforms
■260 ▼a[Sl]▼bCalifornia Institute of Technology▼c2025
■260 1▼aAnn Arbor▼bProQuest Dissertations & Theses▼c2025
■300 ▼a88 p
■500 ▼aSource: Dissertations Abstracts International, Volume: 87-01, Section: B.
■500 ▼aAdvisor: Teukolsky, Saul;Scheel, Mark;Most, Elias.
■5021 ▼aThesis (Ph.D.)--California Institute of Technology, 2025.
■520 ▼aGravitational wave analysis requires waveform models to compare with observed signals from compact binaries. These models are based on and validated by numerical relativity waveforms---waveforms output from codes developed to numerically evolve the Einstein field equations. The efficacy of numerical waveforms for analysis is limited by error from both numerical and astrophysical sources. This thesis makes two contributions to the quantification and mitigation of this error.Chapter 2 describes a new algorithm for eccentricity reduction, the process of determining initial conditions for quasicircular binary orbits. This iterative procedure requires a measurement of eccentricity based on an early-inspiral trajectory. We find that the use of nonlinear fitting techniques such as variable projection leads to vastly improved consistency in eccentricity measurements.Finally, Chapter 3 presents an in-depth quantification of error in numerical binary neutron star waveforms from three vastly different numerical relativity codes. We find that overall these codes produce consistent binary neutron star evolutions, but that further accuracy improvements will be required for analysis of next-generation gravitational wave detector signals.
■590 ▼aSchool code: 0037.
■650 4▼aPhysics
■650 4▼aPartial differential equations
■650 4▼aGravity
■650 4▼aInterferometry
■650 4▼aNeutrons
■650 4▼aLasers
■650 4▼aBlack holes
■650 4▼aNeutron stars
■650 4▼aOrbits
■650 4▼aSpacetime
■650 4▼aCodes
■650 4▼aGravitational waves
■650 4▼aTheory of relativity
■650 4▼aError analysis
■650 4▼aFluid mechanics
■650 4▼aRadiation
■650 4▼aParameter estimation
■690 ▼a0204
■690 ▼a0605
■71020▼aCalifornia Institute of Technology▼bPhysics, Mathematics and Astronomy.
■7730 ▼tDissertations Abstracts International▼g87-01B.
■790 ▼a0037
■791 ▼aPh.D.
■792 ▼a2025
■793 ▼aEnglish
■85640▼uhttp://www.riss.kr/pdu/ddodLink.do?id=T17358819▼nKERIS▼z이 자료의 원문은 한국교육학술정보원에서 제공합니다.


