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《中国天文和天体物理学报(英文版)》 1986-01
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The Magneto-Optical Effect and Structure of Sunspot Magnetic Fields

Ye Shihui Jin Jiehai (Purple Mountain Observatory, Academia Sinica)  
On the basis of a numerical solution of the equations of transfer of Stokes parameters under the action of the magmeto-optical effect we calculated monochromatic images of unipolar sunspots in the linear polarization signal U in this paper. Such images as secured with the vector magnetograph of Marshall Space Flight Center in the United States exhibit conspicuous spiral structures and this phenomenon once led M. J. Hag-yard et al. to believe that unipolar sunspots possess spiral magnetic fields. However, B. Landi DegPInnocenti has pointed out that under the action of the magneto-optical effect even radial magnetic fields can give rise to spiral U and Q monochromatic images. This interpretation agrees with our computations in 11. In this paper we have verified Landi Degl'Innocenti's conclusion with our numerical solution of Unno-Beckers' equations which is more accurate than his algebraic solution. Moreover, we have calculated U images not only with a radial fan-shaped model of spot magnetic fields but also with the spiral model established in [4]. By comparison of our results of computations with observations we may preliminarily conclude that the fan-shaped model is closer to reality than the spiral model of spot magnetic fields. We shall further study the structure of spot magnetic fields with quantitative U and Q monochromatic images.
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【Citations】
Chinese Journal Full-text Database 3 Hits
1 DING YOU-JI ZHANG BAI-RONG LI WEI-BAO HONG QIN-FANG LI ZHI-KAI (Funnan Observatory,Academia Sinica);A DISCUSSION OF CORRELATIONS BETWEEN SPIRAL MORPHOLOGY OF SUNSPOT PENUMBRA AND HIGH ENERGETIC FLARES[J];Acta Astronomica Sinica;1976-01
2 YE SHI-HUI WANG ZHEN-YI JING JIE-HAI (Purple Mountain Observatory,Academica Sinica);MAGNETO-SENSITIVE LINES IN THE SOLAR SPECTRUM[J];Acta Astronomica Sinica;1978-02
3 YE SHI-HUI JIN JIE-HAI (Purple Mountain Observatory, Academia Sinica);THE MAGNETO-OPTICAL EFFECT OF SUNSPOTS AND THEIR VECTOR MAGNETIC FIELDS[J];Acta Astronomica Sinica;1983-02
【Co-citations】
Chinese Journal Full-text Database 10 Hits
1 DING HONG-JIA(ffeljing biological instrument Factory inning 100027)LIU SHI-JIE(Institute of -ics, Acndemta Sinica, hoing 100101);PROGRESS IN THE STUDY OF WEAK MAGNETIC MEASUREMENT IN CHINA[J];Chinese Journal of Geophysics;1997-S1
2 ZHANG Su-xin~1, XIE Yong-ming~1,QIAO Zi-yun~1, CHEN Li-qiang~2, ZHAO Zhen-zeng~3 (1.Seismological Bureau of Hebei Province, Shijiazhuang, 050021, China; 2.Central Seismostation of Chengde, HSB; Chengde 067000; 3.Seismostation of Yixian, HSB; Yixian 076000);Study on the relation of solar activity and strong earthquakes occurred in North China[J];North China Earthquake Sciences;2004-02
3 ZHANG De-rong (Shenyang Institute of Aeronautical Engineering,Liaoning Shenyang 110034);A different physical interpretation on the cosmic expansion agent[J];Journal of Shenyang Institute of Aeronautcal Engineering;2003-03
4 ZHANG De-rong(Shenyang Institute of Aeronautical Engineering,Liaoning Shenyang 110034);An estimation of metagalaxy magnetic-field intensity[J];Journal of Shenyang Institute of Aeronautical Engineering;2006-03
5 DING YOUJI ZHANG BAIRONG (Yunnan Observatory, Academia Sinica, Kunming);A MORPHOLOGICAL EVOLUTION MODEL OF SOLAR ACTIVE REGIONS PRODUCING TWO-RIBBON FLARE[J];中国科学A辑(英文版);1983-01
6 Lin Yuan-zhang Chen Jian(Beijing Astronomical Observatory, Academia Sinica);THE MAGNETIC FIELD TWIST AND THE FLARE OCCURRENCE RATE IN A SOLAR ACTIVE REGION[J];Chinese Journal of Space Science;1989-03
7 DING YOU-JI WANG HONG-ZHAO HONG QIN-FANG(Yunnan Observatory, Academia Sinica);THE DISTRIBUTION OF THE SPIRAL SPOT ON SOLAR DISK[J];中国天文和天体物理学报(英文版);1981-04
8 Zhang Hongqi(Beijing Observatory, Acadcmia Sinica);Felλ 5324.19 (?) Line Depth of Formation in the Solar Magnetic Field[J];中国天文和天体物理学报(英文版);1986-04
9 Xiao Suming Ding Youji M. J. Hagyard J. B. Smith, Jr. 1. Urmqi Astronomical Station. Chinese Academy of Sciences.2. Yunnan Observatory, Chinese Academy of Sciences.3. Marshall Space Flight Center, U. S. A.;The Evolution of Flares on 4 February 1986[J];中国天文和天体物理学报(英文版);1988-04
10 Ye Shi-hui (Purple Mountain Observatory, Academia Sinica);Researches on the Magneto-sensitive Lines in the Solar Spectrum[J];Progress In Astronomy;1983-02
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