Results 11 to 20 of about 243,837 (300)

Physical aspects of dust–plasma interactions [PDF]

Contributions to Plasma Physics, 2021
AbstractLow‐pressure gas discharge plasmas are known to be strongly affected by the presence of small dust particles. This issue plays a role in the investigations of dust particle‐forming plasmas, where the dust‐induced instabilities may affect the properties of synthesized dust particles.
Pustylnik, Mikhail, Pikalev, Aleksandr, Zobnin, Andrey, Semenov, Igor, Thomas, Hubertus M., Petrov, Oleg   +5 more
openaire   +1 more source

Cometary dust analogues for physics experiments

Monthly Notices of the Royal Astronomical Society, 2022
ABSTRACT The CoPhyLab (Cometary Physics Laboratory) project is designed to study the physics of comets through a series of earth-based experiments. For these experiments, a dust analogue was created with physical properties comparable to those of the non-volatile dust found on comets.
A Lethuillier, C Feller, E Kaufmann, P Becerra, N Hänni, R Diethelm, C Kreuzig, B Gundlach, J Blum, A Pommerol, G Kargl, S Laddha, K Denisova, E Kührt, H L Capelo, D Haack, X Zhang, J Knollenberg, N S Molinski, T Gilke, H Sierks, P Tiefenbacher, C Güttler, K A Otto, D Bischoff, M Schweighart, A Hagermann, N Jäggi   +27 more
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Physical Properties of Five Grain Dust Types [PDF]

Environmental Health Perspectives, 1986
Physical properties of grain dust derived from five grain types (soybean, rice, corn, wheat, and sorghum) were measured and reported. The grain dusts were obtained from dust collection systems of terminal grain handling facilities and were assumed to be representative of grain dust generated during the handling process. The physical properties reported
C B, Parnell, D D, Jones, R D, Rutherford, K J, Goforth   +3 more
openaire   +3 more sources

Physical Properties of Cometary Dust [PDF]

International Astronomical Union Colloquium, 1991
AbstractPrior to the 1986 apparition of comet Halley, all attempts to determine the physical properties of cometary dust were limited to remote observations and the analysis of various particles captured by the Earth’s atmosphere. The in situ measurements made by the three spacecraft that passed within 10,000 km of the nucleus provided the first ...
J.A.M. McDonnell, P.L. Lamy, G.S. Pankiewicz   +2 more
openaire   +1 more source

PHYSICAL PROPERTIES OF LUMINOUS DUST-POOR QUASARS [PDF]

The Astrophysical Journal, 2013
We identify and characterize a population of luminous dust poor quasars at 06 previously. This class of active galactic nuclei has been known to show little IR emission from a dusty structure, but is yet poorly understood in terms of number evolution or of dependence on physical quantities.
Jun, Hyunsung David, Im, Myungshin
openaire   +2 more sources

Interaction between dust grains near a conducting wall [PDF]

, 2002
The effect of the conducting electrode on the interaction of dust grains in a an ion flow is discussed. It is shown that two grains levitating above the electrode at the same height may attract one another. This results in the instability of a dust layer
A. M. Ignatov, A. Melzer, D. Samsonov, G. Lapenta, M. Nambu, O. Ishihara, V. S. Vladimirov, Ya. L. Al’pert   +7 more
core   +3 more sources

PHANGS–JWST First Results: Measuring Polycyclic Aromatic Hydrocarbon Properties across the Multiphase Interstellar Medium

The Astrophysical Journal Letters, 2023
Ratios of polycyclic aromatic hydrocarbon (PAH) vibrational bands are a promising tool for measuring the properties of the PAH population and their effect on star formation.
Jérémy Chastenet, Jessica Sutter, Karin Sandstrom, Francesco Belfiore, Oleg V. Egorov, Kirsten L. Larson, Adam K. Leroy, Daizhong Liu, Erik Rosolowsky, David A. Thilker, Elizabeth J. Watkins, Thomas G. Williams, Ashley. T. Barnes, F. Bigiel, Médéric Boquien, Mélanie Chevance, Daniel A. Dale, J. M. Diederik Kruijssen, Eric Emsellem, Kathryn Grasha, Brent Groves, Hamid Hassani, Annie Hughes, Kathryn Kreckel, Sharon E. Meidt, Hsi-An Pan, Miguel Querejeta, Eva Schinnerer, Cory M. Whitcomb   +28 more
doaj   +1 more source

PHANGS–JWST First Results: Variations in PAH Fraction as a Function of ISM Phase and Metallicity

The Astrophysical Journal Letters, 2023
We present maps tracing the fraction of dust in the form of polycyclic aromatic hydrocarbons (PAHs) in IC 5332, NGC 628, NGC 1365, and NGC 7496 from JWST/MIRI observations.
Jérémy Chastenet, Jessica Sutter, Karin Sandstrom, Francesco Belfiore, Oleg V. Egorov, Kirsten L. Larson, Adam K. Leroy, Daizhong Liu, Erik Rosolowsky, David A. Thilker, Elizabeth J. Watkins, Thomas G. Williams, Ashley. T. Barnes, Frank Bigiel, Médéric Boquien, Mélanie Chevance, I-Da Chiang, Daniel A. Dale, J. M. Diederik Kruijssen, Eric Emsellem, Kathryn Grasha, Brent Groves, Hamid Hassani, Annie Hughes, Kathryn Kreckel, Sharon E. Meidt, Ryan J. Rickards Vaught, Amy Sardone, Eva Schinnerer   +28 more
doaj   +1 more source

Assessment of a Mid-Fidelity Numerical Approach for the Investigation of Tiltrotor Aerodynamics

Applied Sciences, 2021
The study of the complex aerodynamics that characterise tiltrotors represents a challenge for computational fluid dynamics tools. URANS numerical solvers are typically used to explore the aerodynamic features that characterise the different flight ...
Alex Zanotti, Alberto Savino, Michele Palazzi, Matteo Tugnoli, Vincenzo Muscarello   +4 more
doaj   +1 more source

A model for the condensation of a dusty plasma [PDF]

, 2004
A model for the condensation of a dusty plasma is constructed by considering the spherical shielding layers surrounding a dust grain test particle. The collisionless region less than a collision mean free path from the test particle is shown to separate ...
P. M. Bellan, Wigner E.
core   +3 more sources