Rosetta papers with CBK PAN participation
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The first is an overview paper by H. Sierks et al. entitled "On the nucleus structure and activity of comet 67P/Churyumov-Gerasimenko". The second gives a preliminary but detailed account of the features seen on the nucleus surface. This is by N. Thomas et al. and is entitled "The morphological diversity of comet 67P/Churyumov-Gerasimenko". The third describes OSIRIS imaging of dust grains in the surroundings of the nucleus by A. Rotundi et al. and is entitled "Dust measurements in the coma of comet 67P/Churyumov-Gerasimenko inbound to the Sun between 3.7 and 3.4 AU". The fourth by F.Cappacioni et al., entitled ,,The organic-rich surface of comet 67P/Churyumov-Gerasimenko as seen by VIRTIS/Rosetta'' describes types of substances seen in visible and infrared ranges of spectra obtained in different areas of cometary surface.

 

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Hans Rickman

 

Last Updated on Tuesday, 27 January 2015 11:46
 

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Turbulence is a complex phenomenon with driving mechanisms still not clearly understood in contemporary science. Turbulence naturally appears in astrophysical plasmas, including the solar wind at planetary and interstellar shocks. The shocks in astrophysical plasmas are usually collisionless due to a very low density of the medium and therefore they differ from those observed in ordinary fluids, because they often result from interaction of nonlinear structures.

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Sample return space missions are one of the possible options to extend our knowledge about extra-terrestrial materials, processes occurring on surface and subsurface level, as well as interactions between regolith and technology. Collection of surface or subsurface material from such bodies is a key technical process that needs to be performed to achieve the goals of such missions. Although in terrestrial environment the sampling process is relatively easy, smart solutions are needed for zero gravity, unknown and remotely accessible space environment.

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The interstellar gas in the Local Interstellar Cloud (LIC) surrounding the Sun is composed mainly of hydrogen and helium. But it contains also other chemical elements, among which the most abundant are oxygen and neon. The neutral atoms from the LIC flow into the heliosphere, where some of them are ionized and carried away with the solar wind as pick-up ions (PUIs), but some of them reach the Earth's orbit and distances even closer to the Sun. Underway, they are focused by solar gravity and form a characteristic, elongated patterns in density, with a cone of enhanced concentration at the downwind side of the Sun.

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The November issue of the prestigious science journal Astrophysical Journal Supplement Series presents results of investigations of interstellar matter in the immediate galactic neighborhood of the Sun, carried out by the Interstellar Boundary Explorer (IBEX) space probe. An important contribution to the findings presented in a series of 14 papers published in a special topical issue of ApJS was brought by a team of scientists from the Laboratory for Solar System Physics and Astrophysics of the Space Research Centre of the Polish Academy of Sciences (Centrum Badań Kosmicznych PAN, CBK PAN), led by Dr. Maciej Bzowski.

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