Results 11 to 20 of about 17,172 (307)

Time-Synchronized Microwave Cavity Resonance Spectroscopy and Laser Light Extinction Measurements as a Diagnostic for Dust Particle Size and Dust Density in a Low-Pressure Radio-Frequency Driven Nanodusty Plasma

Applied Sciences, 2022
In a typical laboratory nanodusty plasma, nanometer-sized solid dust particles can be generated from the polymerization of reactive plasma species. The interplay between the plasma and the dust gives rise to behavior that is vastly different from that of
Tim Donders, Tim Staps, Job Beckers
doaj   +1 more source

Modelling soil dust aerosol in the Bodélé depression during the BoDEx campaign [PDF]

, 2006
We present regional model simulations of the dust emission events during the Bodélé Dust Experiment (BoDEx) that was carried out in February and March 2005 in Chad. A box model version of the dust emission model is used to test different input parameters
Todd, M., J Helmert (16052072), Dubovik, O., Dubovik, O, J. Helmert, B. Heinold, Tegen, I, R. Washington, Helmert, J, Washington, R, Tegen, I., I Tegen (16051628), Heinold, B, M. Todd, Todd, MC, Heinold, B., Martin Todd (4462747), B Heinold (16051742), I. Tegen, O. Dubovik, Washington, R., O Dubovik (8761467), Helmert, J., R Washington (16051622)   +23 more
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Simulation of grid morphology’s effect on ion optics and the local electric field

AIP Advances, 2022
Electric field ion optics are employed by many scientific instruments for investigating ions, e.g., using time-of-flight mass spectrometers. A common design feature of such instruments is the grounded grid that provides boundaries between regions that ...
Z. Levin, S. Kempf
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Dust formation and evolution in the ejecta of core-collapse supernovae [PDF]

, 2015
Observations of local supernovae over the past couple of decades have reported the presence of dust in the ejecta. The dust masses inferred from observations in mid-infrared and submillimeter wavelengths differ by a factor of 10^2 to 10^4 The composition
Sarangi, Arkaprabha
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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 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
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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

The dust budget crisis in high-redshift submillimetre galaxies [PDF]

, 2014
KR acknowledges support from the European Research Council Starting Grant (P.I. V. Wild). HLG acknowledges support from the Science, Technology and Facilities Council.We apply a chemical evolution model to investigate the sources and evolution of dust in
Alfonso Aragon-Salamanca, van der Werf, P., Haley Gomez, Rowlands, K., Gomez, H.L., Loretta Dunne, Elisabete da Cunha, Steve Maddox, Maddox, S., Gomez, H. L., da Cunha, E., Aragón-Salamanca, Alfonso, Dunne, L., Kate Rowlands, Dye, S., van der Werf, Paul, Aragón-Salamanca, A., Simon Dye, Gomez, H., Paul van der Werf   +19 more
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Physical Modeling of the Zodiacal Dust Cloud [PDF]

Symposium - International Astronomical Union, 2001
This review is based on extensive work done in collaboration with N. Gorkavyi, J. Mather, and T. Taidakova, which aimed at physical modeling of the interplanetary dust (IPD) cloud in the Solar System, i.e., establishing a link between the observable characteristics of the zodiacal cloud and the dynamical and physical properties of the parent minor ...
openaire   +2 more sources

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