气候变化领域集成服务门户(CCPortal): Unusual polarimetric properties for interstellar comet 2I/Borisov

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DOI	10.1038/s41467-021-22000-x
	Unusual polarimetric properties for interstellar comet 2I/Borisov
	Bagnulo S.; Cellino A.; Kolokolova L.; Nežič R.; Santana-Ros T.; Borisov G.; Christou A.A.; Bendjoya P.; Devogèle M.
发表日期	2021
ISSN	2041-1723
卷号	12 期号:1
英文摘要	So far, only two interstellar objects have been observed within our Solar System. While the first one, 1I/‘Oumuamua, had asteroidal characteristics, the second one, 2I/Borisov, showed clear evidence of cometary activity. We performed polarimetric observations of comet 2I/Borisov using the European Southern Observatory Very Large Telescope to derive the physical characteristics of its coma dust particles. Here we show that the polarization of 2I/Borisov is higher than what is typically measured for Solar System comets. This feature distinguishes 2I/Borisov from dynamically evolved objects such as Jupiter-family and all short- and long-period comets in our Solar System. The only object with similar polarimetric properties as 2I/Borisov is comet C/1995 O1 (Hale-Bopp), an object that is believed to have approached the Sun only once before its apparition in 1997. Unlike Hale-Bopp and many other comets, though, comet 2I/Borisov shows a polarimetrically homogeneous coma, suggesting that it is an even more pristine object. © 2021, The Author(s).
语种	英语
scopus关键词	dust; Hale-Bopp; homogeneity; Jupiter; polarization; solar system; Article; astronomy; controlled study; measurement; polarimetry; polarization; rotation; solar radiation; sun; time
来源期刊	Nature Communications
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/251486
作者单位	Armagh Observatory & Planetarium, College Hill, Armagh, United Kingdom; INAF – Osservatorio Astrofisico di Torino, Pino Torinese, Italy; Department of Astronomy, University of Maryland, College Park, MD, United States; Mullard Space Science Laboratory, Department of Space & Climate Physics, University College London, Dorking, Surrey, United Kingdom; Centre for Planetary Sciences, University College London/Birkbeck, London, United Kingdom; Departamento de Fisica, Ingeniería de Sistemas y Teoría de la Señal, Universidad de Alicante, Alicante, Spain; Institut de Ciències del Cosmos (ICCUB), Universitat de Barcelona (IEEC-UB), Barcelona, Spain; Institute of Astronomy and National Astronomical Observatory, Bulgarian Academy of Sciences, Sofia, Bulgaria; Université Côte d’Azur, Observatoire de la Côte d’Azur, CNRS, Laboratoire Lagrange, Nice, France; Arecibo Observatory, University of Central Florida, Arecibo, PR, United States
推荐引用方式 GB/T 7714	Bagnulo S.,Cellino A.,Kolokolova L.,et al. Unusual polarimetric properties for interstellar comet 2I/Borisov[J],2021,12(1).
APA	Bagnulo S..,Cellino A..,Kolokolova L..,Nežič R..,Santana-Ros T..,...&Devogèle M..(2021).Unusual polarimetric properties for interstellar comet 2I/Borisov.Nature Communications,12(1).
MLA	Bagnulo S.,et al."Unusual polarimetric properties for interstellar comet 2I/Borisov".Nature Communications 12.1(2021).