서브메뉴
검색
A First Imaging Power Spectrum with the Hydrogen Epoch of Reionization Array Phase II
A First Imaging Power Spectrum with the Hydrogen Epoch of Reionization Array Phase II
상세정보
- 자료유형
- 학위논문 서양
- 최종처리일시
- 20250211151952
- ISBN
- 9798383227077
- DDC
- 523
- 저자명
- Storer, Dara.
- 서명/저자
- A First Imaging Power Spectrum with the Hydrogen Epoch of Reionization Array Phase II
- 발행사항
- [Sl] : University of Washington, 2024
- 발행사항
- Ann Arbor : ProQuest Dissertations & Theses, 2024
- 형태사항
- 202 p
- 주기사항
- Source: Dissertations Abstracts International, Volume: 86-01, Section: B.
- 주기사항
- Advisor: Morales, Miguel.
- 학위논문주기
- Thesis (Ph.D.)--University of Washington, 2024.
- 초록/해제
- 요약The 21 cm signal from neutral hydrogen is a powerful probe for observing the Epoch of Reionization, a period in cosmological history when the first stars and galaxies were forming. Observing this epoch would give astronomers tremendous insight into the underlying physics driving structure formation in the early universe. However, the 21 cm signal is incredibly faint, and therefore measurements will require high precision instruments and analysis techniques.This thesis works with data from the Hydrogen Epoch of Reionization Array, a radio interferometer designed to observe the 21 cm signal. We present efforts to identify and mitigate instrumental systematics, and explore their direct influence on our ability to achieve successful measurements. Through this, we present new and informative tools for data quality assessment in a many-element interferometer. This includes both statistical and visual data inspection techniques that allow observers to succinctly inspect extremely large volumes of data. Additionally, we make use of interferometric imaging techniques to pursue a power spectrum measurement. This work represents the first imaging-based power spectrum results with HERA phase II. We find a feature that inhibits our power spectrum measurement at some modes, but are noise limited at others. Our results indicate that with a deeper integration HERA has the potential to place scientifically interesting upper limits on the 21 cm signal at some power spectrum modes.
- 일반주제명
- Astrophysics
- 일반주제명
- Astronomy
- 일반주제명
- Physics
- 키워드
- 21 cm
- 키워드
- Cosmology
- 키워드
- Interferometry
- 키워드
- Radio
- 기타저자
- University of Washington Physics
- 기본자료저록
- Dissertations Abstracts International. 86-01B.
- 전자적 위치 및 접속
- 로그인 후 원문을 볼 수 있습니다.
MARC
008250123s2024 us c eng d■001000017162261
■00520250211151952
■006m o d
■007cr#unu||||||||
■020 ▼a9798383227077
■035 ▼a(MiAaPQ)AAI31328566
■040 ▼aMiAaPQ▼cMiAaPQ
■0820 ▼a523
■1001 ▼aStorer, Dara.
■24512▼aA First Imaging Power Spectrum with the Hydrogen Epoch of Reionization Array Phase II
■260 ▼a[Sl]▼bUniversity of Washington▼c2024
■260 1▼aAnn Arbor▼bProQuest Dissertations & Theses▼c2024
■300 ▼a202 p
■500 ▼aSource: Dissertations Abstracts International, Volume: 86-01, Section: B.
■500 ▼aAdvisor: Morales, Miguel.
■5021 ▼aThesis (Ph.D.)--University of Washington, 2024.
■520 ▼aThe 21 cm signal from neutral hydrogen is a powerful probe for observing the Epoch of Reionization, a period in cosmological history when the first stars and galaxies were forming. Observing this epoch would give astronomers tremendous insight into the underlying physics driving structure formation in the early universe. However, the 21 cm signal is incredibly faint, and therefore measurements will require high precision instruments and analysis techniques.This thesis works with data from the Hydrogen Epoch of Reionization Array, a radio interferometer designed to observe the 21 cm signal. We present efforts to identify and mitigate instrumental systematics, and explore their direct influence on our ability to achieve successful measurements. Through this, we present new and informative tools for data quality assessment in a many-element interferometer. This includes both statistical and visual data inspection techniques that allow observers to succinctly inspect extremely large volumes of data. Additionally, we make use of interferometric imaging techniques to pursue a power spectrum measurement. This work represents the first imaging-based power spectrum results with HERA phase II. We find a feature that inhibits our power spectrum measurement at some modes, but are noise limited at others. Our results indicate that with a deeper integration HERA has the potential to place scientifically interesting upper limits on the 21 cm signal at some power spectrum modes.
■590 ▼aSchool code: 0250.
■650 4▼aAstrophysics
■650 4▼aAstronomy
■650 4▼aPhysics
■653 ▼a21 cm
■653 ▼aCosmology
■653 ▼aEpoch of Reionization
■653 ▼aInterferometry
■653 ▼aRadio
■690 ▼a0596
■690 ▼a0606
■690 ▼a0605
■71020▼aUniversity of Washington▼bPhysics.
■7730 ▼tDissertations Abstracts International▼g86-01B.
■790 ▼a0250
■791 ▼aPh.D.
■792 ▼a2024
■793 ▼aEnglish
■85640▼uhttp://www.riss.kr/pdu/ddodLink.do?id=T17162261▼nKERIS▼z이 자료의 원문은 한국교육학술정보원에서 제공합니다.
