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DETECTING INTERSTELLAR OBJECTS BY USING SPACE WEATHER DATA

우주기상 데이터를 활용한 성간천체 탐색

  • Ryun Young Kwon (Korea Astronomy and Space Science Institute) ;
  • Minsun Kim (Korea Astronomy and Space Science Institute) ;
  • Sungwook E. Hong (Korea Astronomy and Space Science Institute) ;
  • Thiem Hoang (Korea Astronomy and Space Science Institute)
  • Received : 2023.03.24
  • Accepted : 2023.07.31
  • Published : 2023.08.31

Abstract

We present a novel method that can enhance the detection success rate of interstellar objects. Interstellar objects are objects that are not gravitationally bound to our solar system and thus are believed to have originated from other planetary systems. Since the finding of two interstellar objects, 1l/'Oumuamua in 2017 and 2l/Borisov in 2019, much attention has been paid to finding new interstellar objects. In this paper, we propose the use of Heliospheric Imagers (HIs) for the survey of interstellar objects. In particular, we show HI data taken from Solar TErrestrial RElation Observatory/Sun Earth Connection Coronal and Heliospheric Investigation and demonstrate their ability to detect 'Oumuamua-like interstellar objects. HIs are designed to monitor and study space weather by observing the solar wind traveling through interplanetary space. HIs provide the day-side observations and thus it can dramatically enlarge the observable sky range when combined with the traditional night-side observations. In this paper, we first review previous methods for detecting interstellar objects and demonstrate that HIs can be used for the survey of interstellar objects.

Keywords

Acknowledgement

본 연구는 정부(과학기술정보통신부)의 재원으로 한국천문연구원 주요사업 및 기타사업의 지원을 받아 수행되었습니다(우주생명현상탐색 기획연구 No. 2022E83090, 우주생명현상탐색 No. 2021184005, 차세대 우주환경 변화와 예측 연구 No. 2023185007). 그리고, 우주거대구조를 이용한 암흑우주연구(No. 2023186902), 고밀도 천체의 물질 방출 및 자기장 연구(No. 2023184007), 우주생명현상 탐색연구를 함께 수행하고 있는 동료들(LiCE Team; 강현우, 손봉원, 신민수, 이충욱, 정선주, 정태현)께 감사드립니다. 그리고, 세심하고 건설적인 제안을 주신 익명의 심사위원분들께 감사드립니다.

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