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Shock Dynamics in a Supernova Remnant Near the ISM Interface
Shock Dynamics in a Supernova Remnant Near the ISM Interface
상세정보
- 자료유형
- 학위논문 서양
- 최종처리일시
- 20250211152704
- ISBN
- 9798384052135
- DDC
- 523
- 저자명
- Witt, E. M.
- 서명/저자
- Shock Dynamics in a Supernova Remnant Near the ISM Interface
- 발행사항
- [Sl] : University of Colorado at Boulder, 2024
- 발행사항
- Ann Arbor : ProQuest Dissertations & Theses, 2024
- 형태사항
- 133 p
- 주기사항
- Source: Dissertations Abstracts International, Volume: 86-03, Section: B.
- 주기사항
- Advisor: Fleming, Brian.
- 학위논문주기
- Thesis (Ph.D.)--University of Colorado at Boulder, 2024.
- 초록/해제
- 요약Supernovae (SN) play a key role in processing matter and energy in the galaxy, affecting both the galaxy itself and the surrounding environment. These large-scale mechanisms are informed by the understanding of small-scale processes such as the interaction of SN ejecta with shock fronts in the interstellar medium (ISM). The state of the environment under which this interaction occurs, probed by far ultraviolet (FUV) emission, determines how the mass distribution of dust changes across shock fronts. However, such emission is difficult to observe. What observations exist were taken across spatial scales too large to resolve the delicate shock filaments, blending different populations of particles in the shock fronts together.This dissertation will report on new observations made by the Integral Field Ultraviolet Spectroscopic Experiment (INFUSE) sounding rocket experiment to expand the observational basis of one particular shock front across wavelengths that have not previously been simultaneously measured. This payload observed the XA Region of the Cygnus Loop supernova remnant, a well observed population of shock fronts where a dense finger of ISM material is interacting with the SN ejecta. C IV λλ 1547, 1551 A emission was detected and a model of dust grain depletion based on Hα λ 6562.8 A data fits the observation. Other spectral lines yield a measurement of shock velocities present in the shock fronts; however, they are too low to be consistent with the detected O VI λλ 1032, 1037 A emission. This is likely due to a variety of shock velocities being present in one INFUSE spatial resolution element. The use of archival data to calculate shock velocities and uncertainties in accounting for resonance scattering likely contributed to this result.
- 일반주제명
- Astrophysics
- 일반주제명
- Physics
- 일반주제명
- Astronomy
- 일반주제명
- Optics
- 키워드
- Far ultraviolet
- 키워드
- Shock fronts
- 키워드
- Sounding rocket
- 기타저자
- University of Colorado at Boulder Astrophysical and Planetary Sciences
- 기본자료저록
- Dissertations Abstracts International. 86-03B.
- 전자적 위치 및 접속
- 로그인 후 원문을 볼 수 있습니다.
MARC
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■00520250211152704
■006m o d
■007cr#unu||||||||
■020 ▼a9798384052135
■035 ▼a(MiAaPQ)AAI31488214
■040 ▼aMiAaPQ▼cMiAaPQ
■0820 ▼a523
■1001 ▼aWitt, E. M.
■24510▼aShock Dynamics in a Supernova Remnant Near the ISM Interface
■260 ▼a[Sl]▼bUniversity of Colorado at Boulder▼c2024
■260 1▼aAnn Arbor▼bProQuest Dissertations & Theses▼c2024
■300 ▼a133 p
■500 ▼aSource: Dissertations Abstracts International, Volume: 86-03, Section: B.
■500 ▼aAdvisor: Fleming, Brian.
■5021 ▼aThesis (Ph.D.)--University of Colorado at Boulder, 2024.
■520 ▼aSupernovae (SN) play a key role in processing matter and energy in the galaxy, affecting both the galaxy itself and the surrounding environment. These large-scale mechanisms are informed by the understanding of small-scale processes such as the interaction of SN ejecta with shock fronts in the interstellar medium (ISM). The state of the environment under which this interaction occurs, probed by far ultraviolet (FUV) emission, determines how the mass distribution of dust changes across shock fronts. However, such emission is difficult to observe. What observations exist were taken across spatial scales too large to resolve the delicate shock filaments, blending different populations of particles in the shock fronts together.This dissertation will report on new observations made by the Integral Field Ultraviolet Spectroscopic Experiment (INFUSE) sounding rocket experiment to expand the observational basis of one particular shock front across wavelengths that have not previously been simultaneously measured. This payload observed the XA Region of the Cygnus Loop supernova remnant, a well observed population of shock fronts where a dense finger of ISM material is interacting with the SN ejecta. C IV λλ 1547, 1551 A emission was detected and a model of dust grain depletion based on Hα λ 6562.8 A data fits the observation. Other spectral lines yield a measurement of shock velocities present in the shock fronts; however, they are too low to be consistent with the detected O VI λλ 1032, 1037 A emission. This is likely due to a variety of shock velocities being present in one INFUSE spatial resolution element. The use of archival data to calculate shock velocities and uncertainties in accounting for resonance scattering likely contributed to this result.
■590 ▼aSchool code: 0051.
■650 4▼aAstrophysics
■650 4▼aPhysics
■650 4▼aAstronomy
■650 4▼aOptics
■653 ▼aFar ultraviolet
■653 ▼aIntegral field spectroscopy
■653 ▼aInterstellar medium
■653 ▼aShock fronts
■653 ▼aSounding rocket
■653 ▼aSupernova remnants
■690 ▼a0596
■690 ▼a0605
■690 ▼a0752
■690 ▼a0606
■71020▼aUniversity of Colorado at Boulder▼bAstrophysical and Planetary Sciences.
■7730 ▼tDissertations Abstracts International▼g86-03B.
■790 ▼a0051
■791 ▼aPh.D.
■792 ▼a2024
■793 ▼aEnglish
■85640▼uhttp://www.riss.kr/pdu/ddodLink.do?id=T17163412▼nKERIS▼z이 자료의 원문은 한국교육학술정보원에서 제공합니다.
