[논문]달 뒷면의 전파망원경을 이용한 기술문명징후 탐색

Minsun Kim; Sungwook E. Hong; Taehyun Jung; Hyunwoo Kang; Min-Su Shin; Bong Won Sohn

doi:10.5303/pkas.2023.38.2.059

[국내논문] 달 뒷면의 전파망원경을 이용한 기술문명징후 탐색
SEARCH FOR RADIO TECHNOSIGNATURE FROM THE FARSIDE OF THE MOON 원문보기

천문학논총 = Publications of the Korean Astronomical Society, v.38 no.2, 2023년, pp.59 - 73

Minsun Kim (Korea Astronomy and Space Science Institute) , Sungwook E. Hong (Korea Astronomy and Space Science Institute) , Taehyun Jung (Korea Astronomy and Space Science Institute) , Hyunwoo Kang (Korea Astronomy and Space Science Institute) , Min-Su Shin (Korea Astronomy and Space Science Institute) , Bong Won Sohn (Korea Astronomy and Space Science Institute)

Abstract ▼ AI-Helper

Since the farside of the moon is a place to avoid artificial radio frequency interference (RFI) created by human civilization, it is a most suitable place for searching technosignature, which are signs of technological civilization in the universe, in the radio band. The RFI is a factor that makes the study of searching technosignature quite complicated because it is difficult to distinguish between technological signals produced by human and extraterrestrial civilizations. In this paper, we review why the farside of the moon is the best place to detect technosignature and also introduce radio observatories on the farside of the moon that have been proposed in radio astronomy. The SETI (Search for Extraterrestrial Intelligence) project on the farside of the moon is expected to be one of the main candidates for international collaboration research topics on lunar surface observatory.

Keyword

표/그림 (13)

그림 Figure 1. An example spectrum of HIP74190 from the Green Bank L-band receiver in the Breakthrough Listen project. L-band receiver has a notch filter between 1:2 - 1:34 GHz, reducing interference from the nearby airport surveillance radar. Image Source: Figure 11 of Lebofsky et al. (2019), reused with permission of ©IOP Publishing, Ltd.; permission conveyed through Copyright Clearance Center, Inc. Permission of reusing the figure must be obtained from the original copyright holder.
그림 Figure 2. Results of a 4000 × 4000 km² FDTD simulation at 30 kHz. RFI incident from the left is attenuated behind the Moon on the right. The intensity is calculated by comparing the simulation including the Moon to a simulation run without the Moon. An image of the Moon from the LROC WAC 643 nm reflectance mosaic (Robinson et al., 2010) is overlaid for illustrative purposes. Image Source: Figure 2 of Bassett et al. (2020), reused with permission from ©Elsevier; permission conveyed through Copyright Clearance Center, Inc. Permission of reusing the figure must be obtained from the original copyright holder.
그림 Figure 3. Chang'e-4 mission prole. Relative locations between the Earth, the Moon, and Queqiao relay satellite. The Queqiao is a communications relay satellite for the Chang'e-4 lunar farside mission, launched on 20 May 2018 to a halo orbit around the Earth{Moon L2 Lagrangian point. Image Credit: Loren Roberts for The Planetary Society, Image Source: https://www.planetary.org/space-images/change-4-mission-profile, reused under the terms of the Creative Commons CC BY license.
그림 Figure 4. Concept art of the Lunar Crater Arecibo Array built on the craters in the moon's farside, by following the suggestion of Richard Vondrak. The three dishes can work either as standalone or arrays. Image Source: Oliver (1988), Image Credit: ©NASA, Copyright Work of the US Gov. Public Use Permitted.
그림 Figure 5. The concept of the SETI project on the farside of the moon's surface suggested by Breakthrough Listen. Image Credit: ©Breakthrough Listen/Danielle Futselaar, Image Source: https://seti.berkeley.edu/lunarseti/overview.html, reused with permission from Andrew Siemion (Berkeley SETI Research Center). Permission of reusing the figure must be obtained from the original copyright holder.
그림 Figure 6. Signals from Dark Ages and First Stars "Cosmic Dawn". Image Credit: Furlanetto et al. (2019), Image Source: Figure 2.2 of Bandyopadhyay et al. (2021a), reused with permission from Saptarshi Bandyopadhyay (JPL). Permission of reusing the figure must be obtained from the original copyright holder.
그림 Figure 7. Concept art of LCRT. Image Source: https://www.nasa.gov/directorates/spacetech/niac/2021 Phase I/Lunar_Crater Radio Telescope/, reused with permission from Saptarshi Bandyopadhyay (JPL). Permission of reusing the figure must be obtained from the original copyright holder.
그림 Figure 8. Five potential lunar-craters for LCRT. Image Source: Figure 3.1 of Bandyopadhyay et al. (2021a), reused with permission from Saptarshi Bandyopadhyay (JPL). Permission of reusing the figure must be obtained from the original copyright holder.
그림 Figure 9. Concept of operations for building LCRT. Image Source: Figure 5.1 of Bandyopadhyay et al. (2021a), reused with permission from Saptarshi Bandyopadhyay (JPL). Permission of reusing the figure must be obtained from the original copyright holder.
그림 Figure 10. The FARSIDE mission concept consists of a 128-element, radio interferometer, a base station that provides power, signal processing and telecommunications to the Lunar Gateway, and a rover that deploys and assembles the array. The lunar farside provides isolation from interference and is the only location within the inner solar system for sky noise-limited 200 kHz - 40 MHz radio frequency observations. Image Source: Burns et al. (2019b), reused with permission from Jack O. Burns (University of Colorado Boulder). Permission of reusing the gure must be obtained from the original copyright holder.
그림 Figure 11. FARSIDE will consist of 128 antenna nodes deployed by a rover from a central base station, arranged in a petal configuration. Image Source: Figure 3.1-1. of Burns et al. (2019a), reused with permission from Jack O. Burns (University of Colorado Boulder). Permission of reusing the figure must be obtained from the original copyright holder.
그림 Figure 12. Map of RFI suppression at 100 kHz based upon numerical simulations from Bassett et al. (2020). Contours indicate suppression of 10, 50, and 90 dB relative to the incident intensity. Map colors indicate elevation. Potential landing sites for the FARSIDE are indicated by the yellow stars. Image Source: Figure 1 of Burns et al. (2021a), reused under the terms of the Creative Commons CC BY licence.
그림 Figure 13. The payload suit of KPLO (Danuri). The background image shows an Earth-rise over the lunar surface which was taken by Danuri/LUTI on Dec. 24 2022 corresponding three days after the 2nd lunar orbit insertion maneuver. Image Source: The Korea Pathnder Lunar Orbiter 'Danuri' - Development and journey, 2023 KARI Space Exploration and Science Seminar Series. Image Credit: Dae-Kwan Kim(김대관)/Korea Aerospace Research Institute (KARI). Permission of reusing the gure must be obtained from the original copyright holder.

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용어 설명: PCR은 세균 특이성이 있는 primer를 이용하여 적은 수의 세균이 있을지라도 쉽게 검출할 수 있는 유용한 방법이며, 이를 이용하여 구강 내 치면세균막이나 타액에서 직접 세균을 검출할 수 있게 되었다[8].

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구성항목	기본정보 상세정보 관리번호, 논문명, 저널/프로시딩명, 저자 , 발행년, 권, 호, 시작페이지, 끝페이지, 발행기관 관리번호, 논문명, 대등논문명, 저자 , 저널/프로시딩명, 발행기관, 발행년, 발행언어, 권, 호, 시작페이지, 끝페이지, ISBN, ISSN, 주제분야, 키워드, 초록(한글), 초록(영문), 저자(소속기관)
저장형식	Text(ASCII format) Excel format RefWorks Direct Export RIS format (for Reference Manager, ProCite, EndNote), Scholar's Aids, Mendeley
메일정보	받는사람 (필수) @ 보내는사람 (선택) @ 제목 내용 KISTI 검색결과 이메일 서비스
안내	총 건의 자료가 검색되었습니다. 다운받으실 자료의 인덱스를 입력하세요. (1-10,000) 검색결과의 순서대로 최대 10,000건 까지 다운로드가 가능합니다. 데이타가 많을 경우 속도가 느려질 수 있습니다.(최대 2~3분 소요) 다운로드 파일은 UTF-8 형태로 저장됩니다. 파일의 내용이 제대로 보이지 않을실 때는 웹브라우저 상단의 보기 -> 인코딩 -> 자동선택 여부를 확인하십시오. ~ Text(ASCII format) Excel format

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