Zobrazeno 1 - 10
of 21
pro vyhledávání: '"Thorben Kelling"'
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 463:4167-4174
We consider the mechanism of photophoretic transport in protoplanetary disks that are optically thick to radiation. Here, photophoresis is not caused by the central star but by temperature fluctuations that subject suspended solid particles, includin
Thermal creep efficiently transports gas through Martian soil. To quantify the Martian soil pump we carried out laboratory analog experiments with illuminated granular media at low ambient pressure. We used samples of 1 μm to 5 μm SiO2 (quartz), ba
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6d75f195f05f90ca5d468ce3e4e97fb3
https://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&origin=inward&scp=85027573945
https://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&origin=inward&scp=85027573945
In laboratory experiments, we studied collisions of ensembles of compact (filling factor 0.33) millimeter dust aggregates composed of micrometer quartz grains. We used cylindrical aggregates, triangular aggregates, square aggregates, and rectangular
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e5def07ebaef6132c953665c453a4e8f
http://arxiv.org/abs/1609.00501
http://arxiv.org/abs/1609.00501
Publikováno v:
EAS Publications Series. 58:209-212
It is widely believed that planets form in accretion discs by the growth of small dust and ice grains. To verify the scenarios of protoplanetary disc processes including the transport of material in vertical as well as in radial direction, it is cruc
Publikováno v:
Icarus. 211:832-838
Temperature gradients in dust beds embedded in a low pressure gaseous environment induce a lift of particles under certain conditions. This effect can erode planetesimals and enables entrainment of dust into the martian atmosphere. Here, we consider
Autor:
Andreas Poppe, Thorben Kelling, Bernhard Schrenk, Hannes Hübel, Sven Ramelow, B. Blauensteiner, Anton Zeilinger, Michael Hentschel
Publikováno v:
e & i Elektrotechnik und Informationstechnik. 124:142-148
Die Quantenkryptographie ist die erste Anwendung von direkten Quanteneffekten, die heutzutage bereits in diversen Labors zu Produkten weiterentwickelt wird. Der von den Autoren verfolgte Ansatz verwendet quantenmechanische Verschrankung zwischen Phot
The illuminated dusty surface of Mars acts like a gas pump. It is driven by thermal creep at low pressure within the soil. In the top soil layer this gas flow has to be sustained by a pressure gradient. This is equivalent to a lifting force on the du
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b5fb8eb6580660d93203e24a8f11378f
http://arxiv.org/abs/1507.05764
http://arxiv.org/abs/1507.05764
For dust aggregates in protoplanetary discs a transition between sticking and bouncing in individual collisions at mm to cm size has been observed in the past. This lead to the notion of a bouncing barrier for which growth gets stalled. Here, we pres
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8b3548bcf6edad6a30863cb903feea46
Microgravity experiments on a dust bed in a ‘drop tower’ set-up reveal the ability of martian soil to act as an efficient gas pump when heated by the Sun.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::28d4ea21e5f936a786cc7f9955b7f799
https://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&origin=inward&scp=84904244649
https://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&origin=inward&scp=84904244649
Autor:
Gerhard Wurm, Thorben Kelling
At the inner edge of a protoplanetary disk solids are illuminated by stellar light. This illumination heats the solids and creates temperature gradients along their surfaces. Interactions with ambient gas molecules lead to a radial net gas flow. Ever
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fca6473510936dd804f89a11c28a7563