資料載入中.....
|
請使用永久網址來引用或連結此文件:
https://ir.lib.ncu.edu.tw/handle/987654321/101995
|
| 題名: | The 2016 Feb 19 outburst of comet 67P/CG: An ESA rosetta multi-instrument study |
| 作者: | 葉永烜;Grün, E.;Agarwal, J.;Altobelli, N.;Altwegg, K.;Bentley, M. S.;Biver, N.;Della Corte, V.;Edberg, N.;Feldman, P. D.;Galand, M.;Geiger, B.;Götz, C.;Grieger, B.;Güttler, C.;Henri, P.;Hofstadter, M.;Horanyi, M.;Jehin, E.;Krüger, H.;Lee, S.;Mannel, T.;Morales, E.;Mousis, O.;Müller, M.;Opitom, C.;Rotundi, A.;Schmied, R.;Schmidt, F.;Sierks, H.;Snodgrass, C.;Soja, R. H.;Sommer, M.;Srama, R.;Tzou, C.-Y.;Vincent, J.-B.;Yanamandra-Fisher, P.;A'Hearn, M. F.;Erikson, A. I.;Barbieri, C.;Barucci, M. A.;Bertaux, J.-L.;Bertini, I.;Burch, J.;Colangeli, L.;Cremonese, G.;Da Deppo, V.;Davidsson, B.;Debei, S.;De Cecco, M.;Deller, J.;Feaga, L. M.;Ferrari, M.;Fornasier, S.;Fulle, M.;Gicquel, A.;Gillon, M.;Green, S. F.;Groussin, O.;Gutiérrez, P. J.;Hofmann, M.;Hviid, S. F.;Ip, W.-H.;Ivanovski, S.;Jorda, L.;Keller, H. U.;Knight, M. M.;Knollenberg, J.;Koschny, D.;Kramm, J.-R.;Kührt, E.;Küppers, M.;Lamy, P. L.;Lara, L. M.;Lazzarin, M.;Lòpez-Moreno, J. J.;Manfroid, J.;Epifani, E. Mazzotta;Marzari, F.;Naletto, G.;Oklay, N.;Palumbo, P.;Parker, J. Wm;Rickman, H.;Rodrigo, R.;Rodrìguez, J.;Schindhelm, E.;Shi, X.;Sordini, R.;Steffl, A. J.;Stern, S. A.;Thomas, N.;Tubiana, C.;Weaver, H. A.;Weissman, P.;Zakharov, V. V.;Taylor, M. G. G. T. |
| 貢獻者: | 理學院天文研究所 |
| 關鍵詞: | Astrophysics;comets: individual: 67P/Churyumov-Gerasimenko;Sciences of the Universe |
| 日期: | 2016-08-01 |
| 上傳時間: | 2026-04-21 14:55:23 (UTC+8) |
| 出版者: | Oxford University Press;Oxford University Press (OUP): Policy P - Oxford Open Option A |
| 摘要: | 摘要： On 19 Feb. 2016 nine Rosetta instruments serendipitously observed an outburst of gas and dust from the nucleus of comet 67P/Churyumov-Gerasimenko. Among these instruments were cameras and spectrometers ranging from UV over visible to microwave wavelengths, in-situ gas, dust and plasma instruments, and one dust collector. At 9:40 a dust cloud developed at the edge of an image in the shadowed region of the nucleus. Over the next two hours the instruments recorded a signature of the outburst that significantly exceeded the background. The enhancement ranged from 50% of the neutral gas density at Rosetta to factors >100 of the brightness of the coma near the nucleus. Dust related phenomena (dust counts or brightness due to illuminated dust) showed the strongest enhancements (factors >10). However, even the electron density at Rosetta increased by a factor 3 and consequently the spacecraft potential changed from ∼−16 V to −20 V during the outburst. A clear sequence of events was observed at the distance of Rosetta (34 km from the nucleus): within 15 minutes the Star Tracker camera detected fast particles (∼25 m s−1) while 100 μm radius particles were detected by the GIADA dust instrument ∼1 hour later at a speed of ~6 m s−1. The slowest were individual mm to cm sized grains observed by the OSIRIS cameras. Although the outburst originated just outside the FOV of the instruments, the source region and the magnitude of the outburst could be determined.
出版者： Oxford University Press (OUP): Policy P - Oxford Open Option A
出版日期： 2016
出處： Monthly notices of the Royal Astronomical Society, 2016, Vol.462 (Suppl 1), p.S220-S234
資源來源： Alma/SFX Local Collection
版權： CC0 1.0 - Universal
識別號： ISSN: 0035-8711
識別號： ISSN: 1365-2966
識別號： ISSN: 1365-8711
識別號： EISSN: 1365-2966
識別號： DOI: 10.1093/mnras/stw2088 |
| 顯示於類別: | [天文研究所] 期刊論文
|
文件中的檔案:
| 檔案 |
描述 |
大小 | 格式 | 瀏覽次數 |
|---|
| index.html | | 0Kb | HTML | 21 | 檢視/開啟 |
|
在NCUIR中所有的資料項目都受到原著作權保護.
|
