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Annual Modulation in Intraday Variability Timescales of Extragalactic Radio Sources

[期刊论文] 作者：Shan－JieQian Xi－ZhenZhang, 来源：中国天文和天体物理学报：英文版年份：2001

Annual modulations in timescales of intraday variability (IDY here-after) are discussed for six extragalactic sources:0716+714,0917+624,0954+65,1749+70,1803+78...

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Polarization Position Angle Swings caused by Relativistic Effects

[期刊论文] 作者：Shan-JieQian Xi-ZhenZhang, 来源：中国天文和天体物理学报：英文版年份：2003

Polarization position angle swings of ～ 180° observed in extragalacticradio sources are a regular behavior of variability in polarization. They shouldbe due...

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An Intrinsic Model for the Polarization Position Angle Swing Observed in QSO 1150＋812

[期刊论文] 作者：Shan-JieQian Xi-ZhenZhang, 来源：中国天文和天体物理学报：英文版年份：2004

The rapid polarization position angle swing of ～ 180° observed in QSO 1150+812 at 2cm by Kochenov and Gabuzda is quite a regular event. One interesting prop...

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Interstellar Refractive Scintillation and Intraday Polarization Angle Swings

[期刊论文] 作者：Shan-JieQian,Xi-ZhenZhang,A.Kr, 来源：中国天文和天体物理学报：英文版年份：2005

Intraday polarization angle swings of ～180° observed in two sources (QSO 0917+624 and QSO 1150+812) are discussed in the framework of refractive interstella...

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BL Lacertae： Hard Optical Spectrum and GeV γ-ray Emission

[期刊论文] 作者：Shan-JieQian,Xi-ZhenZhang,T.P., 来源：中国天文和天体物理学报：英文版年份：2004

The spectral energy distribution(SED)of the γ-ray flare observed in July 1997 in BL Lacertae is re-considered.It is pointed out that the optical observations m...

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Multifrequency Polarization Variations in the Quasar 0917＋624

[期刊论文] 作者：Shan－JieQian,A.Kraus,等, 来源：中国天文和天体物理学报：英文版年份：2002

We present a detailed analysis of multi-frequency observations of linear polarization in the intraday variable quasar 0917+624 (z = 1.44). The observations were...

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Spectral Reversal and Stratification of the Jet in 3C 273

[期刊论文] 作者：Shan－JieQian,Xi－ZhengZhang,等, 来源：中国天文和天体物理学报：英文版年份：2001

Quasi-simultaneous VLBI observations at 15-86 GHz have shown that in the classical superhluminal radio source 3C 273, the spectral index α (Sν oc να)has a s...

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Periodic Variations of the Jet Flow Lorentz Factor in 3C 273

[期刊论文] 作者：SHAN－JieQian,Xi－ZhenZhang,等, 来源：中国天文和天体物理学报：英文版年份：2001

3C 273 has been observed with VLBI for more than 30 years. The entiredata have shown that the position angle of the superluminal knots ejected from the core var...

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Interstellar Refractive Scintillation and Intraday Polarization Angle Swings

[期刊论文] 作者：Shan-JieQian，Xi-ZhenZhang，A.Kraus, 来源：黑龙江科技学院学报年份：2005