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1968년 ~ 2024년까지 1,211 건의 한국천문학회지를 격월간 확인하실 수 있습니다.
- The Korean Astronomical Society (The Korean Astronomical Society)
- 계간 (Quarterly)
- ISSN : 1225-4614 (ISSN : 1225-4614)
1225-4614
- DB구축현황 : 1,211건 (DB Construction : 1,211 Articles)
총 게시글 1,211건
페이지 89/122
881
- CHAKRABARTI SANDIP K.
- Journal of the Korean astronomical society = 천문학회지
- 29, n.suppl1
- pp.223-225
- 1996
- 원문 바로보기
We review current theoretical understanding of the spectral properties (low and high states, transition of states, quasi-periodic oscillations etc.) of the low mass as well as supermassive black hole candidates.
882
- RYU DONGSU
- Journal of the Korean astronomical society = 천문학회지
- 29, n.suppl1
- pp.25-26
- 1996
- 원문 바로보기
In the standard theory of the large scale structure formation, matter accretes onto high density perturbations via gravitational instability. Collision less dark matter forms caustics around such structures, while collisional baryonic matter forms accretion shocks which then halt and heat the infalling gas. Here we discuss the characteristics. roles, and observational consequences of these accretion shocks.
883
- ZAKIROV M. M.
- Journal of the Korean astronomical society = 천문학회지
- 29, n.suppl1
- pp.245-246
- 1996
- 원문 바로보기
The extensive close binary research program earring out at High Altitude Maydanak Observatory (Uzbekistan) by means of the UBVR photoelectric photometry on 1.0 m and 0.6 m Zeiss telescopes is described. It includes more than 240 close binary systems (CBS) in 89 different stellar aggregates. Lightcurves of CBS as well as their orbital elements derived by us are presented.
884
- NARLIKAR JAYANT V.
- Journal of the Korean astronomical society = 천문학회지
- 29, n.suppl1
- pp.1-5
- 1996
- 원문 바로보기
Recent discussions of observational constraints on the standard hot big bang model are reviewed and it is argued that now there is room for considering alternative cosmologies. The quasi-steady state cosmology is briefly described. This model seems to explain most of the observed features of the universe, including the m-z relation, radio source count, the light nuclear abundances and the microwave background.
885
- LEE SANG WOO
- Journal of the Korean astronomical society = 천문학회지
- 29, n.1
- pp.9-18
- 1996
- 원문 바로보기
We have analyzed vector magnetograms and <TEX>$H\beta$</TEX> filtergrams of two sunspot groups, one in a growing phase and the other in a decaying phase. In this study, the temporal evolution of their magnetic morphology has been investigated in association with solar activity. The morphological variations of the growing and decaying phase of these sunspots revealed in detail the coalescence of small spots into a large spot and the fragmentation of a large spot into many small spots, respectively. Numerous small flares were detected in the spot group during the decaying phase. This seems to be intimately associated with the shearing motions of many spots with different polarities created by fragmentation of a large sunspot. The magnetic flux and the average shear angle are found to be substantially reduced during the decaying phase, especially in the course of the flarings. This implies that the decaying phase of the sunspot is, to some degree, involved with magnetic field cancellation. The growing spot group has not shown any large activities, but numerous small spots have grown into a typical bipolar sunspot.
886
- KRAICHEVA ZDRAVKA
- Journal of the Korean astronomical society = 천문학회지
- 29, n.suppl1
- pp.227-228
- 1996
- 원문 바로보기
The long-term light curves of the novalikes TT Ari, KR Aur, AM Her and MV Lyr, were compiled and analysed for solar-like cyclical behaviour. The frequency analysis showed long-term cyclical modulations of the brightness of the stars, which can be ascribed to changes of the radii of the late type secondaries in order of <TEX>${\Delta}R/R{\simeq} 10^{-4}-10^{-5}$</TEX>.
887
- TOMITA AKIHIKO
- Journal of the Korean astronomical society = 천문학회지
- 29, n.suppl1
- pp.71-72
- 1996
- 원문 바로보기
We show that the star formation activity of spiral galaxies has a great variety. The star formation variation in a time scale of <TEX>$10^8$</TEX> yr and the mechanism responsible for the variation are discussed.
888
- ISOBE SYUZO
- Journal of the Korean astronomical society = 천문학회지
- 29, n.suppl1
- pp.365-366
- 1996
- 원문 바로보기
889
- KIM KEE- TAE
- Journal of the Korean astronomical society = 천문학회지
- 29, n.suppl1
- pp.177-178
- 1996
- 원문 바로보기
890
- YUN MIN S.
- Journal of the Korean astronomical society = 천문학회지
- 29, n.suppl1
- pp.159-160
- 1996
- 원문 바로보기
Recent high resolution CO observations of normal and starburst galaxies at Owens Valley Millimeter Array are summarized. While normal disk galaxies generally show exponential distribution which follows the optical blue light, starburst galaxies are often characterized by a compact (<TEX>$\~$</TEX>1 kpc) nuclear complex whose surface gas mass density is strongly correlated with the observed large infrared luminosity and thus the ongoing massive star formation.