Results 241 to 250 of about 486,911 (258)
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2019
On March 27, 2013, the administration and astrophysicists of Chelyabinsk State University received emails that again required the organization of a scientific expedition, with a tempting goal. Professor N.N. Gorkavyi advised the recipients of those emails that a dust ring from the Chelyabinsk meteoroid’s remnants was forming around the planet. In order
I. V. Gracheva +2 more
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On March 27, 2013, the administration and astrophysicists of Chelyabinsk State University received emails that again required the organization of a scientific expedition, with a tempting goal. Professor N.N. Gorkavyi advised the recipients of those emails that a dust ring from the Chelyabinsk meteoroid’s remnants was forming around the planet. In order
I. V. Gracheva +2 more
openaire +2 more sources
2002
Dedication. Preface. Observational Information. In the Kitchen of Dust Modeling N.V. Voshchinnikov. Infrared Spectroscopy of Cosmic Dust G.J. Flynn, et al. Experimental Light Scattering Matrices Between to Cosmic Dust O. Munoz, et al. Light Scattering Models. Light Scattering Tools for Cosmic Dust Modeling V.B. Il'In, et al. Fractal Aggregates in Space
Gorden Videen, Miroslav Kocifaj
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Dedication. Preface. Observational Information. In the Kitchen of Dust Modeling N.V. Voshchinnikov. Infrared Spectroscopy of Cosmic Dust G.J. Flynn, et al. Experimental Light Scattering Matrices Between to Cosmic Dust O. Munoz, et al. Light Scattering Models. Light Scattering Tools for Cosmic Dust Modeling V.B. Il'In, et al. Fractal Aggregates in Space
Gorden Videen, Miroslav Kocifaj
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Activation of cosmic dust by cosmic-ray particles
Earth and Planetary Science Letters, 1967Abstract The magnitude of isotopic changes induced in cosmic dust, due to nuclear interactions of solar and galactic cosmic rays, is calculated for several radioisotopes which seem suitable as signatures of cosmic dust in terrestrial environments. The rates of accretion of these radioisotopes depend on the composition and size distribution of cosmic ...
D. Lal, V. S. Venkatavaradan
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Cosmic Dust Toolbox: Microanalytical Instruments and Methods
, 2016When cosmic dust particles were first identified almost 140 years ago, few would have predicted that much would ever be known about these miniscule objects, given the existing state of the art in analytical techniques. Times have changed.
A. Westphal, G. Herzog, G. Flynn
semanticscholar +1 more source
1988
In this chapter we will try to define a common framework within which most of the processes involving astronomical gas and dust clouds can be understood. Before we can do that, however, we should know something about the temperature, density, state of ionization, and linear dimensions of the clouds and we should summarize the information we have about ...
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In this chapter we will try to define a common framework within which most of the processes involving astronomical gas and dust clouds can be understood. Before we can do that, however, we should know something about the temperature, density, state of ionization, and linear dimensions of the clouds and we should summarize the information we have about ...
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Cosmic Dust: Collection and Research
Annual Review of Earth and Planetary Sciences, 1985The term "cosmic dust" as used here refers to particulate material that exists or has existed in the interplanetary medium as bodies smaller than 1 mm. The particles can be collected both in space and in the terrestrial environment, and they are a valuable resource of meteoritic material. The dust samples are complementary to the traditional meteorites
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Orientation of cosmic dust grains
Astrophysics and Space Science, 1976Orientation of nonspherical cosmic dust grains is found in anisotropic corpuscular or radiative fluxes and in the presence of the magnetic field; cosmic grains being approximated by axially symmetric ellipsoids. A comparatively small twisting of grains is shown to cause differences in scattering right-hand and left-hand circularly polarized photons and
A. Z. Dolginov, I. G. Mytrophanov
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Journal of Sol-Gel Science and Technology, 2015
The fabrication of an ultralow-density hydrophobic silica aerogel for the intact capture cosmic dust during the Tanpopo mission is described. The Tanpopo experiment performed on the International Space Station orbiting the Earth includes the collection ...
M. Tabata +6 more
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The fabrication of an ultralow-density hydrophobic silica aerogel for the intact capture cosmic dust during the Tanpopo mission is described. The Tanpopo experiment performed on the International Space Station orbiting the Earth includes the collection ...
M. Tabata +6 more
semanticscholar +1 more source
1996
Preface. Formation and Evolution of Interstellar Icy Grain Mantles W.A. Schutte. The Core-Mantle Interstellar Dust Model J.M. Greenberg, A. Li. Organic Material in the Interstellar Medium Y. Pendleton. PAHs, They're Everywhere! L.J. Allamandola. Neutral and Ionized PAH Spectral Properties.
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Preface. Formation and Evolution of Interstellar Icy Grain Mantles W.A. Schutte. The Core-Mantle Interstellar Dust Model J.M. Greenberg, A. Li. Organic Material in the Interstellar Medium Y. Pendleton. PAHs, They're Everywhere! L.J. Allamandola. Neutral and Ionized PAH Spectral Properties.
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Applications: Cosmic Dust Grains
2003Although the importance of cosmic dust has long been recognized in astronomy, only a partial understanding of the nature of dust grains has been achieved. In fact, most of the information on the interstellar matter that forms the so-called interstellar medium (IST) comes from spectroscopical analysis and from the study of the extinction of the ...
Rosalba Saija +2 more
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