| The Doppler Effect and Spectral Energy Distribution of Blazars |
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| 作者姓名： | Guang－ZhongXie Ben－ZhongDai 等 |
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| 作者单位： | Yunnan Astronomical Observatory，Chinese Academy of Science，Kunming 650011 National Astronomical Observatories，Chinese Academy of Science，Beijing 100012 Yunnan Astrophysics Center，Yu |
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| 摘 要： | The relativistic beaming model is adopted to discuss quantitatively the observational differences between radio-selected BL Lac objects (RBLs) and X-ray-selected BL Lac objects (XBLs), and between BL Lac objects and flat spectrum radio quasars (FSRQs). The main results are the following:(1) In the Doppler corrected color-color(αro^in-αox^in) diagram,XBLs and FSRQs occupy separated regions, while RBLs bridge the gap between them. These properties suggest that similar intrinsic physical processes operate in all the objects under a range of intrinsic physical conditions. (2) Our results are consistent with the results of Sambruna, Maraschi and Urry (1996) from other methods. We show the αxox introduced by Sambruna to be a good index for describing the energy distribution because it represents the intrinsic energy distribution and includes the Doppler correction. (3)The Doppler effect of relativistic beaming is the main mechanism, and the physical differences(such as magnetic fields, electron energies) are also important complementary factors for understanding the relation between XBLs and RBLS.
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| 关 键 词： | BLazars天体 BLlac天体 光谱 能量 分布 |
The Doppler Effect and Spectral Energy Distribution of Blazars |
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| Guang-Zhong Xie,Ben-Zhong Dai,Dong-Cheng Mei and Jun-Hui Fan.The Doppler Effect and Spectral Energy Distribution of Blazars[J].Chinese Journal of Astronomy and Astrophysics,2001,1(3):213-220. |
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| Authors: | Guang-Zhong Xie Ben-Zhong Dai Dong-Cheng Mei and Jun-Hui Fan |
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| Institution: | [1]YunnanAstronomicalObservatory,ChineseAcademyofScience,Kunming650011 [2]NationalAstronomicalObservatories,ChineseAcademyofScience,Kunming650011 |
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| Abstract: | |
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| Keywords: | Blazars: general - quasars:general - radiation mechanism: nonthermal |
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