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A New Space Weather Faraday Cup and Large Scale Structures in the Solar Wind
A New Space Weather Faraday Cup and Large Scale Structures in the Solar Wind
상세정보
- 자료유형
- 학위논문 서양
- 최종처리일시
- 20250211153016
- ISBN
- 9798384045830
- DDC
- 523
- 서명/저자
- A New Space Weather Faraday Cup and Large Scale Structures in the Solar Wind
- 발행사항
- [Sl] : University of Michigan, 2024
- 발행사항
- Ann Arbor : ProQuest Dissertations & Theses, 2024
- 형태사항
- 135 p
- 주기사항
- Source: Dissertations Abstracts International, Volume: 86-04, Section: B.
- 주기사항
- Advisor: Kasper, Justin C.;Raines, Jim M.
- 학위논문주기
- Thesis (Ph.D.)--University of Michigan, 2024.
- 초록/해제
- 요약At the largest scales, the magnetized plasma of the solar wind is organized into stable streams that evolve and interact as they move out into interplanetary space while retaining signatures of their origins in the solar corona.In-situ ion observations at many scales and encompassing many species are necessary to develop a full picture of these structures' kinetic properties and propagation history.We pursue several avenues of analysis and instrument development to advance the quality and parameter range of these measurements.We first develop a simple model of expanding spherical shells to characterize the impact of weak stream interactions on long studied linear relationships of bulk speed with density and temperature.Through validation of this model against many years of Wind/SWE FC spectra, we are able not only to report a new driver of variability in the solar wind but also empirically measure the polytropic index at a variety of timescales and extract "pristine" solar wind conditions.We then seek to improve the statistics of the HIS time-of-flight mass spectrometer aboard Solar Orbiter through dynamic setting of its proton avoidance threshold.Contributions to validation of its first releases of public data are also presented.Finally, we present a series of Faraday cup design activities building up to the development and proposal of a novel Space Weather Faraday Cup.Performance of the RPA-style ion optic is demonstrated through an end-to-end model, including detection of bulk speeds up to 2500 km/s. The final design was submitted to NOAA's Space Weather Next L1 Series request for proposals.
- 일반주제명
- Astrophysics
- 일반주제명
- Plasma physics
- 일반주제명
- Planetology
- 일반주제명
- Optics
- 키워드
- Faraday cup
- 키워드
- Space Weather
- 키워드
- Solar wind
- 기타저자
- University of Michigan Climate and Space Sciences and Engineering
- 기본자료저록
- Dissertations Abstracts International. 86-04B.
- 전자적 위치 및 접속
- 로그인 후 원문을 볼 수 있습니다.
MARC
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■00520250211153016
■006m o d
■007cr#unu||||||||
■020 ▼a9798384045830
■035 ▼a(MiAaPQ)AAI31631528
■035 ▼a(MiAaPQ)umichrackham005620
■040 ▼aMiAaPQ▼cMiAaPQ
■0820 ▼a523
■1001 ▼aBert, Christopher M.
■24512▼aA New Space Weather Faraday Cup and Large Scale Structures in the Solar Wind
■260 ▼a[Sl]▼bUniversity of Michigan▼c2024
■260 1▼aAnn Arbor▼bProQuest Dissertations & Theses▼c2024
■300 ▼a135 p
■500 ▼aSource: Dissertations Abstracts International, Volume: 86-04, Section: B.
■500 ▼aAdvisor: Kasper, Justin C.;Raines, Jim M.
■5021 ▼aThesis (Ph.D.)--University of Michigan, 2024.
■520 ▼aAt the largest scales, the magnetized plasma of the solar wind is organized into stable streams that evolve and interact as they move out into interplanetary space while retaining signatures of their origins in the solar corona.In-situ ion observations at many scales and encompassing many species are necessary to develop a full picture of these structures' kinetic properties and propagation history.We pursue several avenues of analysis and instrument development to advance the quality and parameter range of these measurements.We first develop a simple model of expanding spherical shells to characterize the impact of weak stream interactions on long studied linear relationships of bulk speed with density and temperature.Through validation of this model against many years of Wind/SWE FC spectra, we are able not only to report a new driver of variability in the solar wind but also empirically measure the polytropic index at a variety of timescales and extract "pristine" solar wind conditions.We then seek to improve the statistics of the HIS time-of-flight mass spectrometer aboard Solar Orbiter through dynamic setting of its proton avoidance threshold.Contributions to validation of its first releases of public data are also presented.Finally, we present a series of Faraday cup design activities building up to the development and proposal of a novel Space Weather Faraday Cup.Performance of the RPA-style ion optic is demonstrated through an end-to-end model, including detection of bulk speeds up to 2500 km/s. The final design was submitted to NOAA's Space Weather Next L1 Series request for proposals.
■590 ▼aSchool code: 0127.
■650 4▼aAstrophysics
■650 4▼aPlasma physics
■650 4▼aPlanetology
■650 4▼aOptics
■653 ▼aFaraday cup
■653 ▼aSpace Weather
■653 ▼aSolar wind
■653 ▼aInner heliosphere
■653 ▼aStream interactions
■690 ▼a0596
■690 ▼a0759
■690 ▼a0752
■690 ▼a0590
■71020▼aUniversity of Michigan▼bClimate and Space Sciences and Engineering.
■7730 ▼tDissertations Abstracts International▼g86-04B.
■790 ▼a0127
■791 ▼aPh.D.
■792 ▼a2024
■793 ▼aEnglish
■85640▼uhttp://www.riss.kr/pdu/ddodLink.do?id=T17164553▼nKERIS▼z이 자료의 원문은 한국교육학술정보원에서 제공합니다.
