Evolution of the solar Lyman-alpha profile line
Our research

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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Anisotropic Turbulence in the Earth's Magnetosheath
Our research

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.

Last Updated on Wednesday, 14 February 2018 13:01
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The new concept of sampling device driven by rotary hammering actions
Our research

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.

Last Updated on Tuesday, 13 September 2016 13:16
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SPIE Remote Sensing symposium in Warsaw
News

We cordially invite you to participate in the 2017 SPIE Remote Sensing symposium.  Over the past 23 years SPIE Remote Sensing has become the largest and most prestigious annual international meeting on this subject in Europe.

Last Updated on Tuesday, 31 January 2017 14:53
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The cycle of solar activity responsible for modulation of interstellar neutral gas density and pick-up ions along the Earth’s orbit
Our research

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.

Last Updated on Wednesday, 20 April 2016 09:59
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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.

Read more...

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.

Read more...

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.

Read more...

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