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REFERENCE LINKING PLATFORM OF KOREA S&T JOURNALS
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Journal of Astronomy and Space Sciences
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Journal DOI :
The Korean Space Science Society
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Volume & Issues
Volume 4, Issue 2 - Dec 1987
Volume 4, Issue 1 - Jun 1987
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Orbital Elements and Period Variation of the Eclipsing Binary T LMi
Journal of Astronomy and Space Sciences, volume 4, issue 2, 1987, Pages 69~80
A photometric solutions of T LMi were derived with the Wilson and Devinney model using the BV photoelectric light curves of Okazaki(1977) and orbital period changes are discussed from the all of the collected times a available in the literature. We obtained a variation with a period of
and an amplitude of
form the (O-C) diagram. According to the physical properties of T LMi on the basis of derived photometric solution, it have a doubt the credibility of the existence of "R CMa type".ype".uot;.
A Study of Ion-Hybrid Instability in the Mixed Plasma
Journal of Astronomy and Space Sciences, volume 4, issue 2, 1987, Pages 81~88
There are more oxygen ions than hydrogen ions in the auroral field zone. We consider both analytic and numerical simulation study of the heating of hydrogen and oxygen ions by auroral electrons. With the low drift speed of electron beams, the ion-ion hybrid wave becomes unstable instead of the lower hydrid wave so that a preferential heating of oxygen ions occurs.
Distribution of Interstellar Reddening Material in the Galactic Plane
Kim, Chul-Hee ;
Journal of Astronomy and Space Sciences, volume 4, issue 2, 1987, Pages 89~94
By using the recently determined color excess and distance data of classical by Kim (1985), the distribution of interstellar reddening material was studied to see the general picture of the average rate of interstellar absorption out to about 7-8 kpc in the Galactic plane in various directions from the sun.
Generation of Large Scale Magnetic Fields by Cross Field Diffusion
Ryu, Chang-Mo ;
Journal of Astronomy and Space Sciences, volume 4, issue 2, 1987, Pages 95~99
The possibility of the cross-field diffusion of a fluid to generate magnetic fields on a large scale is examined. Application to the sunspot is discussed.
Three Dimensional Numerical Code for the Expanding Flat Universe
Min, Kyoung-W. ;
Journal of Astronomy and Space Sciences, volume 4, issue 2, 1987, Pages 101~106
The current distribution of galaxies may contain clues to the condition of the universe when the galaxies condensed and to nature of the subsequent expansion of the universe. The development of this large scale structure can be studied by employing N-body computer simulations. The present paper describes the code developed for this purpose. The computer code calculates the motion of collisionless matter acting under the force of gravity in an expanding flat universe. The test run of the code shows the error less than 0.5% in 100 iterations.
On the Nature of the Gamma-ray Bursts
Hong, Kyung-Ai ; Kim, Sug-Whan ; Kim, Tu-Hwan ;
Journal of Astronomy and Space Sciences, volume 4, issue 2, 1987, Pages 107~127
Review of the
-ray burst phenomena are presented. History of the
-ray bursts, characteristics, and three radiation mechanisms of thermal bremsstrahlung, thermal synchrotron, and inverse Compton scattering processes are considered.