نتایج جستجو برای: dusty systems
تعداد نتایج: 1187001 فیلتر نتایج به سال:
Abstract In this review, we summarize recent advances in the field of dusty plasmas at strong magnetic fields. Special emphasis is put on situations where experimental laboratory observations are available. These generally comprise with magnetized electrons and ions, but unmagnetized dust. The fundamental parameters characterizing a (dusty) plasma given various effects under fields presented. A...
Active galactic nuclei play a key role in the evolution of galaxies, but their inner workings and physical connection to host are poorly understood due lack angular resolution. Infrared interferometry makes it possible resolve circumnuclear dust nearby Seyfert 2 galaxy, Circinus. Previous observations have revealed complex structures polar emission interpretation was limited simple models. MATI...
This doctoral thesis reports analytical and numerical results for the electrostatic response of a dusty plasma to a moving test charge. Two important physical aspects of dusty plasmas, namely grain size distribution and grain charging dynamics were taken into account. In the first case, a dusty plasma in thermal equilibrium and with a distribution of grain sizes is considered. A size distributi...
Low-ionization broad absorption line (BAL) QSOs present properties that cannot generally be explained by simple orientation effects. We have conducted a deep spectroscopic and imaging study of the host galaxies of the only four BAL QSOs that are currently known at z < 0.4, and found that all four objects reside in dusty, starburst or poststarburst, merging systems. The starburst ages derived fr...
It is generally believed that exposure to limestone dust does not present a pneumoconiosis hazard. However, Doig (1955) has recently described cases of silicosis amongst limestone workers after prolonged exposure to high dust concentrations. The limestones concerned contained from 5 to 15% quartz as impurity, and dissolution of the calcium carbonate in the lung would leave a quartz-rich residue...
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