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Two dimensional self-consistent fluid simulation of rf inductive sources

Description: The two-dimensional (R - Z) electromagnetic code FMRZ has been written to model inductive sources self-consistently in time. The code models an argon plasma with momentum-transfer, excitation and ionization as electron-neutral reactions and scattering and charge-exchange for the ion-neutral reactions. The electrons and ions are treated as Maxwellian fluid species and a reduced set of Maxwell`s equations is used to advance the electromagnetic fields. The set of equations used in FMRZ is not subj… more
Date: November 17, 1993
Creator: DiPeso, G.; Vahedi, V.; Hewett, D. W. & Rognlien, T. D.
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Partner: UNT Libraries Government Documents Department
open access

Fast pulsars, compact stars, and the strange matter hypothesis

Description: Part one of this paper deals with the recent finding of the possible existence of a mixed phase of baryon matter and quark matter inside neutron stars. In part two we review the theoretically determined minimum rotational periods of neutron stars, which serve to distinguish between pulsars that can be understood as rotating neutron stars and those that can not. Likely candidates for the latter are hypothetical strange stars. Their mass-radius relationship is discussed in the last part. It is po… more
Date: March 17, 1993
Creator: Weber, F. & Glendenning, N. K.
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Partner: UNT Libraries Government Documents Department
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The first data from the MACHO experiment

Description: MAssive Compact Halo Objects such as brown dwarfs, Jupiters, and black holes are prime candidates to comprise the dark halo of our galaxy. Paczynski noted that objects (dubbed MACHOS) with masses in the range 10{sup {minus}6} M{circle_dot} < M {approx_lt} 100M{circle_dot} can be detected via gravitational microlensing of stars in the Magellanic Clouds with the caveat that only about one in 10{sup 6} stars will be lensed at any given time. Our group has recently begun a search for microlensing u… more
Date: March 17, 1993
Creator: Bennett, D. P.; Cook, K. H.; Akerlof, C.; Perlmutter, S.; Sutherland, W.; Alcock, C. et al.
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Partner: UNT Libraries Government Documents Department
open access

New astrophysical opacities and their effects on stellar models

Description: Recent advances in astrophysical opacity calculations are discussed. A description and comparison of results from two new independent efforts is given. The large increases in the calculated opacity in the few hundred-thousand degree range have led to improved agreement with a wide range of observations. Some directions for future work are suggested.
Date: June 17, 1994
Creator: Rogers, F. J. & Iglesias, C. A.
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Partner: UNT Libraries Government Documents Department
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