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CERENKOV LINE EMISSION AND THE BALMER DECREMENT OF QUASARS

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Chinese Science Bulletin 1986年第4期31卷 235-238页

作者：江涛尤峻汉程富珍程富华 Center for Astrophysics University of Science and Technology of China Hefei Center for Astrophysics University of Science and Technology of China Hefeihe observed very steep Balmer decrement for low-redshift QSOs has been one of the most important puzzles for many years. The observed intensity ratios of Balmer line series for QSOs are seriously in disagreement with those for ordinary nebulae. Generally the ratio I(H_α)/I(H_β) is always far larger than that for nebulae and I(H_β)/I(H_γ) is also larger. It is very difficult to explain the above phenomenon by the classical radiative recombination theory. Table 1 gives the recent observations of ten quasars by Puetter et al. and Neugebauer et al. The

The observed very steep Balmer decrement for low-redshift QSOs has been one of the most important puzzles for many years. The observed intensity ratios of Balmer line series for QSOs are seriously in disagreement with those for ordinary nebulae. Generally the ratio I(H_α)/I(H_β) is always far larger than that for nebulae and I(H_β)/I(H_γ) is also larger. It is very difficult to explain the above phenomenon by the classical radiative recombination theory. Table 1 gives the recent observations of ten quasars by Puetter et al. and Neugebauer et al.

关键词： seriously recombination ordinary radiative simplified explain inverse visible steep formulae

Action Research in the English Language Classroom

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基础教育外语教学研究 2020年第5期 31-35页

作者： Thu H.Tran 不详

Thu Tran explains why action research is beneficial for teacher professional growth..Approaches to research In oral communication,people often use the verb research’to mean'look carefully and closely into a topic,issue,or object',People who plan to buy a new house,vehicle or laptop computer may say that they have done some research on the item of choice prior to purchasing them.

关键词： verb Tra explain

RAY-TRACING STUDY OF ELECTRON CYCLOTRON RESONANCE HEATING WITH MULTI-REFLECTION AND MODE CONVERSION

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Chinese Science Bulletin 1987年第3期32卷 158-161页

作者：张泽湘蒋洪英 Institute of Physics Academia Sinica Beijing Institute of Physics Academia Sinica Beijingome electron cyclotron resonance heating (ECRH) experiments carried out in small devices (here we define a device with optical thickness of plasma less than one unit as a small device) showed that the energy absorption estimated by the optical thickness

Some electron cyclotron resonance heating (ECRH) experiments carried out in small devices (here we define a device with optical thickness of plasma less than one unit as a small device) showed that the energy absorpti... 详细信息

关键词： MULTI heating explain radius tracing shaped latter torus toward speaking

DISTORTION OF COSMIC MICROWAVE BACKGROUND SPECTRUM BY DUST HEATED BY POPULATION Ⅲ

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Chinese Science Bulletin 1986年第3期31卷 192-196页

作者：谢光中 Yunnan Observatory Academia Sinica Kunming? INTRODUCTION Matsumoto et al. reported that they have detected an IR background in the waveband 2-5μm which has a density Q_R~10~(-4)h~(-2) in units of the critical density (ρ_(crit)=5×10~(-30)h~2g cm~(-3) with H_0=50h km S~(-1)MPC~(-1)) and an approximately black body spectrum with a temperature~1500K. B. J. Carr J. Mcdowell and H. Sato

Ⅰ. INTRODUCTION Matsumoto et al. reported that they have detected an IR background in the waveband 2—5μm which has a density QR～10-4h-2 in units of the critical density (ρcrit=5×10-30h2g cm-3 with H0=50h km S-1M... 详细信息

关键词： Matsumoto universe explain stars body uniformly neutral somewhat distortion missing

A GEOMETRICAL MODEL FOR SOLAR LOCAL RADIO SOURCES

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Chinese Science Bulletin 1981年第6期26卷 531-535页

作者： Zhao Renyang Beijing Observatory Academia Sinica

Ⅰ.INTRODUCTION The radiation of the solar local radio sources originates from the combined radiation mechanism of both the bremsstrahlung and the gyro-magnetic *** mechanism can basically explain all the radiative characteristics of the radio *** the present paper,we will consider an active region possessing a sufficiently strong magnetic field of a unipolar sunspot,taking account of the gyro-magnetic radiation and the bremsstrahlung of the radio sources themselves.

关键词： themselves explain LOCAL SOLAR RADIO radiative sufficiently basically referential ordina

Disproval of Gravity-induced Quantum Decoherence by Micius in Space

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Bulletin of the Chinese Academy of Sciences 2020年第1期34卷 16-17页

作者： SONG Jianlan 不详

Quantum mechanics and general relativity are deemed to be the two major "pillars" to support modern physics-they each are exceptionally successful in explaining phenomena in their own realms,namely the microscopic and... 详细信息

关键词： exceptional explain macroscopic

THE TWO TYPES OF FLARES IN THE ACTIVE REGION AR5395

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天文研究与技术 1990年第4期 34-37,328页

作者： Zhang Bairong, Luan Di, Li QiongyingYunnan Observatory, Chinese Academy of Sciences Kunming, Yunnan Province, 650011, China

1 Introduction In the 1970s, it had been known that two kinds of flares may be existed. One isthe "Compact flare", in EUV and X-ray, it is appeared as static brightenning coronalloop arches preexisted in lower level. Another kind of flare is the "two-ribbon flare", it isinitiated from the collapse of filament and characterized by the continued increasing

关键词： ribbon filament collapse Solar continued explain bright appeared listed magnet

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Young Game Changers

中印对话（英文版） 2022年第3期 25-27页

作者： Samridhi Sukhani The Mandarin Story an online language school based in BangaloreIndia.

A lot of knowledge needs to be disseminated from both sides to explain the real India and China without alterations.

关键词： explain alterations knowledge

INFRARED SPECTRAL STUDY ON CASSITERITE OF DIFFERENT ORIGINS

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Chinese Science Bulletin 1985年第12期30卷 1655-1659页

作者：彭明生何双梅 Research Group of Quantum Mineralogy Central South Institute of Mining and MetallurgyChangsha

Spectroscopic study on the origin of cassiterite is a new aspect of modern genetic mineralogy as well as a significant work of quantum mineralogy. In the previous articles, a systematic investigation of quantum mineralogy on piemontite was carried out, mainly to study its crystal field spectra and to explain the formation process and origin of the Hainan iron deposit. The infrared spectra

关键词： explain hydrothermal rutile infra sulfide straight apparent granite substitution calculating