We have identified more than 6000 polygons on 67P, using OSIRIS images with a spatial resolution down to 1.6 m/pixel. They are observed in consolidated terrains, from flat terrains to steep terrains such as cliffs and pit walls. The size of polygons is in the range 1 鈥 10 m, with...
“Surface changes on comet 67P/Churyumov-Gerasimenko suggest a more active past” by M. Ramy El-Maarry, O. Groussin, N. Thomas, M. Pajola, A.-T. Auger, B. Davidsson, X. Hu, S. F. Hviid, J. Knollenberg, C. Güttler, C. Tubiana, S. Fornasier, C. Feller, P. Hasselmann,...
We use the gravitational instability formation scenario of cometesimals to derive the aggregate size that can be released by the gas pressure from the nucleus of comet 67P/Churyumov-Gerasimenko for different heliocentric distances and different volatile ices.Methods. To derive the ejected aggregate ...
et al. Size–frequency distribution of boulders ≥10 m on comet 103P/Hartley 2. Astron. Astrophys. 585, A85 (2016). Article Google Scholar Pajola, M. et al. The southern hemisphere of 67P/Churyumov–Gerasimenko: analysis of the preperihelion size–frequency distribution of boulders ≥7 ...
In new images of comet 67P/Churyumov-Gerasimenko taken by Rosetta's onboard scientific imaging system OSIRIS, surface structures are becoming visible. The resolution of these images is now 100 meters per pixel. One of the most striking features is curren
yes, the rotation matters. comet 67p has a rotation period of 12.7 hours. this means that if you were standing on the equator, you would be moving in a circle of radius 2πr in just 12.7 hours. this is the same as a linear velocity of 0.27 m/s. so, at the equator, you don'...
After a two-year orbital tour around comet 67P/Churyumov-Gerasimenko, ESA's Rosetta spacecraft—carrying Southwest Research Institute's Alice ultraviolet spectrograph—will end its mission this week on Sept. 30. Rosetta is the first spacecraft to orbit a
comet.2019015.linux.exe -P./comet.params.high-high test_1.mzML 1. 谱图文件支持mzXML, mzML, mgf, or ms2/cms2等多种格式,obitrap的高分辨质谱仪(.raw)需要转化。关于Linux上质谱原始数据的格式转化,可参考博文:【ThermoRawFileParser】质谱raw格式转换mgf(-f参数设为1即可得到mzML格...
\begin{equation}s = \frac{2}{\sqrt{\pi}} \sqrt {\frac{R_{\rm dust}}{R_{67{\rm P}}} \frac{{13.5 \times {10}^{ - 6}{\rm m}}}{\rm FL} {d_{\rm particle}}} .\end{equation}(1) The size of the particles (see Formula 1) given by their diameter s depends on the...
Comet 67P/Churyumov-Gerasimenko's bizarre shape, likened by some to a rubber duck, adds more uncertainty in a smooth landing, officials said. Rosetta returned the first detailed images of the comet in July. "In the beginning, it was so scary to see this comet as it was," said Jean-...