International Workshop EMSEV 2014 - Konstancin-Jeziorna, 22.09.2014
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EMSEV is an IUGG Working Group supported by IAGA, IASPEI and IAVCEI. Its focuses are the observation and explanation of the various kinds of electromagnetic phenomena associated with seismic and volcanic activities particularly from a multi-disciplinary point of view.

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Rosetta: Closing in on the comet
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The Rosetta spacecraft is now in the immediate vicinity of the comet nucleus to be explored, the one of Comet 67P/Churyumov-Gerasimenko. This target will soon be mapped systematically, in great detail, as part of the preparations for the touchdown of the Philae lander, foreseen for November this year. However, the OSIRIS cameras have already delivered quite astounding pictures of the weird object, and we are as yet far from understanding exactly what we are looking at. Here are some examples of the riddles that have been posed and the scientists of the camera team are working on.

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Last Updated on Wednesday, 20 August 2014 10:04
 
Energetic helium atoms may be the key to understand the IBEX Ribbon
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The discovery of the IBEX Ribbon, which is an area on the sky of enhanced emission of hydrogen atom flux, was a surprising finding of the Interstellar Boundary Explorer mission. The origin of the Ribbon is yet unknown and there are several competing hypotheses on Ribbon’s sources. According to one of them, the Ribbon forms in the Local Interstellar Cloud near the heliospheric boundary due to interaction of solar wind neutral particles with interstellar matter. According to another hypothesis, proposed by a team of researchers from CBK PAN led by Professor Stanisław Grzędzielski and published in 2010 in The Astrophysical Journal Letters, the Ribbon is a result of interaction between the Local Interstellar Cloud boundary and the Local Bubble. That happens much farther away from the Sun than in the first case. Those two totally different hypotheses explain the formation of similar energetic hydrogen atom fluxes, making it difficult to eliminate one of them on the basis of existing energetic hydrogen atoms measurements. To solve this dilemma, CBK PAN researchers have recently proposed to use observation of energetic helium atoms.

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The ESA Rosetta Mission
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Centrum Badań Kosmicznych PAN (eng. Space Research Centre PAS) is deeply involved in the ongoing ESA/Rosetta exploration of a comet named Churyumov-Gerasimenko and numbered 67P. Among CBK PAN staff contributing to this effort are:

Wlodek Kofman -- PI for the CONSERT experiment
Hans Rickman -- Lead scientist on the OSIRIS team
Maria Blecka -- Member of the VIRTIS team
Marek Banaszkiewicz -- Contributor to the MUPUS lander experiment
Jerzy Grygorczuk -- Chief engineer behind the MUPUS penetrator

We plan to issue "Rosetta Updates" on a semi-regular basis, typically once every other week, as long as there are new interesting results coming from the mission, and to publish these in both Polish and English at this site. We invite you to follow the exciting news with us by checking these notes!

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Last Updated on Wednesday, 30 July 2014 12:45
 
Wake up, Rosetta!
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On January 20th a special conference called “Wake up, Rosetta” will take place in Darmstadt, Germany. On that day the European Space Agency (ESA) will wake up the space probe Rosetta from its hibernation in where it has been dormant for the last 30 months.
Last Updated on Wednesday, 22 January 2014 13:03
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Our research

our research

Interstellar neutral atoms of helium from the local interstellar medium are observed by the Interstellar Boundary Explorer (IBEX) spacecraft in the Earth orbit. Researchers from CBK PAN, together with international collaborators, analyze these observations to determine the Sun’s motion with respect to the local interstellar medium and the temperature of this medium. In a broader perspective, results of these analyses provide important insight into mechanisms of interaction of the heliosphere with its surroundings. In a paper recently published in The Astrophysical Journal they analyzed data from two energy channels of the IBEX-Lo detector previously not used, in addition to the data from the channel used beforehand, and obtained a better assessment of these quantities.

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Lyman-alpha line is one of the most prominent features in the UV part of the solar spectrum. It allows us to estimate the magnitude of radiation pressure, which is a force that photons from the Sun exert on hydrogen atoms. Radiation pressure is, next to the gravitational force, the main factor that determines the trajectories of neutral hydrogen and deuterium atoms inside the heliosphere.

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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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