Journal of Astronomy and Space Sciences

  • 제41권1호
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  • Pages.1-15
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  • 2024
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  • 2093-5587(pISSN)
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  • 2093-1409(eISSN)
한국우주과학회 (The Korean Space Science Society)
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Long-Term Science Goals with In Situ Observations at the Sun-Earth Lagrange Point L4

  • Dae-Young Lee (Department of Astronomy and Space Science, Chungbuk National University) ;
  • Rok-Soon Kim (Space Science Division, Korea Astronomy and Space Science Institute) ;
  • Kyung-Eun Choi (Space Sciences Laboratory, University of California) ;
  • Jungjoon Seough (Space Science Division, Korea Astronomy and Space Science Institute) ;
  • Junga Hwang (Space Science Division, Korea Astronomy and Space Science Institute) ;
  • Dooyoung Choi (Department of Astronomy and Space Science, Chungbuk National University) ;
  • Ji-Hyeon Yoo (Department of Astronomy and Space Science, Chungbuk National University) ;
  • Seunguk Lee (Department of Astronomy and Space Science, Chungbuk National University) ;
  • Sung Jun Noh (ISR-1: Space Science and Applications, Los Alamos National Laboratory) ;
  • Jongho Seon (Department of Astronomy & Space Science, College of Applied Sciences, Kyung-Hee University) ;
  • Kyung-Suk Cho (Space Science Division, Korea Astronomy and Space Science Institute) ;
  • Kwangsun Ryu (Satellite Technology Research Center, KAIST) ;
  • Khan-Hyuk Kim (Department of Astronomy & Space Science, College of Applied Sciences, Kyung-Hee University) ;
  • Jong-Dae Sohn (Space Science Division, Korea Astronomy and Space Science Institute) ;
  • Jae-Young Kwak (Space Science Division, Korea Astronomy and Space Science Institute) ;
  • Peter H. Yoon (Institute for Physical Science and Technology, University of Maryland)
  • 투고 : 2023.12.29
  • 심사 : 2024.01.22
  • 발행 : 2024.03.15
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초록

The Korean heliospheric community, led by the Korea Astronomy and Space Science Institute (KASI), is currently assessing the viability of deploying a spacecraft at the Sun-Earth Lagrange Point L4 in collaboration with National Aeronautics and Space Administration (NASA). The aim of this mission is to utilize a combination of remote sensing and in situ instruments for comprehensive observations, complementing the capabilities of the L1 and L5 observatories. The paper outlines longterm scientific objectives, underscoring the significance of multi-point in-situ observations to better understand critical heliospheric phenomena. These include coronal mass ejections, magnetic flux ropes, heliospheric current sheets, kinetic waves and instabilities, suprathermal electrons and solar energetic particle events, as well as remote detection of solar radiation phenomena. Furthermore, the mission's significance in advancing space weather prediction and space radiation exposure assessment models through the integration of L4 observations is discussed. This article is concluded with an emphasis on the potential of L4 observations to propel advancements in heliospheric science.

키워드

과제정보

Dae-Young Lee acknowledges support from the National Research Foundation of Korea under grant NRF-2019 R1A2C1003140. This work was also supported by the Korea Astronomy and Space Science Institute under the R&D program (2024E90100). The work of K.-E.C. was supported by NASA grants 80NSSC22K0433, 80NSSC22K0522, and NASA's Living with a Star (LWS) program (contract 80NSSC20K0218). The work of K.R. was partly supported by the National Research Foundation of Korea under grant NRF-2021M1A3 A4A06086639. Wilcox Solar Observatory data used in this study was obtained via the web site http://wso.stanford.edu at 2024:03:04_21:40:59 PST courtesy of J.T. Hoeksema.

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