본문

서브메뉴

Error Quantification and Mitigation for Numerical Compact Binary Waveforms
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
저자명  
Habib, Sarah Mary.
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  
Partial differential equations
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.

미리보기

내보내기

chatGPT토론

Ai 추천 관련 도서


    신착도서 더보기
    최근 3년간 통계입니다.

    소장정보

    • 예약
    • 소재불명신고
    • 나의폴더
    • 우선정리요청
    • 비도서대출신청
    • 야간 도서대출신청
    소장자료
    등록번호 청구기호 소장처 대출가능여부 대출정보
    TF16663 전자도서 대출가능 마이폴더 부재도서신고 비도서대출신청 야간 도서대출신청

    * 대출중인 자료에 한하여 예약이 가능합니다. 예약을 원하시면 예약버튼을 클릭하십시오.

    해당 도서를 다른 이용자가 함께 대출한 도서

    관련 인기도서

    로그인 후 이용 가능합니다.