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讓-呂克·馬戈

讓-呂克·馬戈
Jean-Luc Margot
出生1969年(54—55歲)
 比利时魯汶
国籍 美国
母校魯汶天主教大學BS
康乃爾大學PhD
奖项哈羅德·C·尤里獎(2004)
科学生涯
研究领域行星科學天體物理學
机构加利福尼亞大學洛杉磯分校
博士導師唐納德·B·坎貝爾英语Donald B. Campbell

讓-呂克·馬戈(法語:Jean-Luc Margot,1969年)為比利時美國天文學家,也是加利福尼亞大學洛杉磯分校教授,擅長研究行星科學搜尋地外文明(SETI)。

職業生涯

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馬戈利用雷達和光學望遠鏡發現並研究了幾顆雙小行星。他的發現包括林衛一英语Romulus (moon)司衛一英语Linus (moon)小行星379雲雀星,以及小行星69230英语69230 Hermes等雙星性質的小行星。

2000年,他首次獲得雙近地小行星的圖片,並描述雙小行星透過自旋上升過程所形成的情況[1][2]。馬戈和他的研究小組研究陽光對小行星軌道和自旋的影響、亞爾科夫斯基效應以及YORP效應[3][4][5]

2007年,馬戈及其合作者分析水星自轉速率的微小變化,確定水星有一個熔融內核[6][7]。根據斯坦頓·J·皮爾英语Stanton J. Peale提出的概念,此觀測結果還可以測量水星內核的大小[8][9]

2012年,馬戈和研究生茱莉亞·方(Julia Fang)分析克卜勒太空望遠鏡的數據,以推斷行星系統中的結構[10]。並將行星系統描述為「比薄餅還薄」[11]。也發現許多行星系統都為動態排列[12]

馬戈提議對國際天文聯合會的行星定義進行擴展,使其適用於系外行星[13][14]

2006年至2021年期間,馬戈及其合作者利用雷達斑點英语Speckle (interference)追蹤技術測量金星的自轉。他們測量了自轉軸的方向及進動。他們還測量了晝長的時長與晝長長度的變化,並將其歸因於大氣層和固態行星之間的動量傳遞[15][16] [17]

2016年起,他與加利福尼亞大學洛杉磯分校的學生使用大型電波望遠鏡進行技術訊號搜尋[17][18]。志願者可以透過「我們在宇宙中是孤獨的嗎?(Are we alone in the universe?)页面存档备份,存于互联网档案馆)」的公民科學合作計畫為搜尋地外文明做出貢獻[19]

榮譽

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2004年,馬戈被美國天文學會授予哈羅德·C·尤里獎[20]小行星9531(9531 Jean-Luc)即以他的名字命名[21]

參考資料

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  1. ^ Some Asteroids Have Astronomers Seeing Double. JPL press release. 2002-04-11 [10 November 2015]. (原始内容存档于17 July 2012). 
  2. ^ Margot, Jean-Luc; et al. Binary Asteroids in the Near-Earth Object Population. Science. 2002, 296 (5572): 1445–1448. Bibcode:2002Sci...296.1445M. PMID 11951001. S2CID 8768432. doi:10.1126/science.1072094. 
  3. ^ Prediction Proved: Light Speeds Up an Asteroid as it Spins. The New York Times. 2007-03-13 [2024-03-03]. (原始内容存档于2023-02-06). 
  4. ^ Taylor, Patrick; et al. Spin Rate of Asteroid (54509) 2000 PH5 Increasing due to the YORP Effect. Science. 2007, 316 (5822): 274–277. Bibcode:2007Sci...316..274T. PMID 17347415. S2CID 29191700. doi:10.1126/science.1139038可免费查阅. .
  5. ^ Greenberg, Adam H.; Margot, Jean-Luc; Verma, Ashok K.; Taylor, Patrick A.; Hodge, Susan E. Yarkovsky Drift Detections for 247 Near-Earth Asteroids. The Astronomical Journal. 7 February 2020, 159 (3): 92. Bibcode:2020AJ....159...92G. S2CID 119502545. arXiv:1708.05513可免费查阅. doi:10.3847/1538-3881/ab62a3可免费查阅. 
  6. ^ Mercury's spin reveals molten, not solid core. Reuters. 2007-05-03 [2024-03-03]. (原始内容存档于2023-10-15). 
  7. ^ Margot, Jean-Luc; et al. Large longitude libration of Mercury reveals a molten core. Science. 2007, 316 (5825): 710–714. Bibcode:2007Sci...316..710M. PMID 17478713. S2CID 8863681. doi:10.1126/science.1140514. 
  8. ^ Peale, S. J. Does Mercury have a molten core?. Nature. 1976, 262 (5571): 765–766. Bibcode:1976Natur.262..765P. S2CID 4210179. doi:10.1038/262765a0. 
  9. ^ Margot, Jean-Luc; et al. Mercury's moment of inertia from spin and gravity data. Journal of Geophysical Research. 2012, 117: n/a. Bibcode:2012JGRE..117.0L09M. doi:10.1029/2012JE004161可免费查阅. 
  10. ^ Fang, Julia; Margot, Jean-Luc. Architecture of Planetary Systems Based on Kepler Data: Number of Planets and Coplanarity. The Astrophysical Journal. 2012, 761 (2): 92. Bibcode:2012ApJ...761...92F. ISSN 0004-637X. S2CID 20234144. arXiv:1207.5250可免费查阅. doi:10.1088/0004-637X/761/2/92. 
  11. ^ Most Alien Solar Systems Are 'Flatter Than Pancakes'. Space.com. 2012-10-15 [2024-03-03]. (原始内容存档于2024-03-03). 
  12. ^ Fang, Julia; Margot, Jean-Luc. Are Planetary Systems Filled to Capacity? A Study Based on Kepler Results. The Astrophysical Journal. 2013, 767 (2): 115. Bibcode:2013ApJ...767..115F. ISSN 0004-637X. S2CID 53706876. arXiv:1302.7190可免费查阅. doi:10.1088/0004-637X/767/2/115. 
  13. ^ Why we need a new definition of the word 'planet'. Los Angeles Times. 14 November 2015 [2024-03-03]. (原始内容存档于2023-12-11). 
  14. ^ Margot, Jean-Luc. A Quantitative Criterion for Defining Planets. The Astronomical Journal. 1 December 2015, 150 (6): 185. Bibcode:2015AJ....150..185M. S2CID 51684830. arXiv:1507.06300可免费查阅. doi:10.1088/0004-6256/150/6/185. 
  15. ^ Crockett, Christopher. How long is a day on Venus? Scientists crack mysteries of our closest neighbor. phys.org. [2024-03-03]. (原始内容存档于2024-03-03) (英语). 
  16. ^ Margot, Jean-Luc; Campbell, Donald B.; Giorgini, Jon D.; Jao, Joseph S.; Snedeker, Lawrence G.; Ghigo, Frank D.; Bonsall, Amber. Spin state and moment of inertia of Venus. Nature Astronomy. July 2021, 5 (7): 676–683. Bibcode:2021NatAs...5..676M. S2CID 232092194. arXiv:2103.01504可免费查阅. doi:10.1038/s41550-021-01339-7. 
  17. ^ 17.0 17.1 Researchers Just Scanned 14 Worlds From the Kepler Mission for "Technosignatures", Evidence of Advanced Civilizations. Universe Today. 2018-02-15 [2024-03-03]. (原始内容存档于2018-02-10). 
  18. ^ Margot, Jean-Luc; Li, Megan G.; Pinchuk, Pavlo; Myhrvold, Nathan; Lesyna, Larry; et al. A Search for Technosignatures Around 11,680 Stars with the Green Bank Telescope at 1.15–1.73 GHz. The Astronomical Journal. 1 November 2023, 166 (5): 206. Bibcode:2023AJ....166..206M. arXiv:2308.02712可免费查阅. doi:10.3847/1538-3881/acfda4可免费查阅. 
  19. ^ UCLA is asking for the public's help in finding signs of extraterrestrial intelligence. Los Angeles Times. 15 February 2023 [2024-03-03]. (原始内容存档于2023-11-20). 
  20. ^ Harold C. Urey Prize in Planetary Science. Division of Planetary Sciences of the American Astronomical Society. [11 December 2021]. (原始内容存档于2018-06-18). 
  21. ^ Small Body Orbital Elements 9531 Jean-Luc (1981 QK). JPL. [11 December 2021]. (原始内容存档于2021-06-28). 

外部連結

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讓-呂克·馬戈
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