| 利用最小光变时标与中心黑洞质量估算耀变体的多普勒因子 |
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| 引用本文： | 易庭丰. 利用最小光变时标与中心黑洞质量估算耀变体的多普勒因子[J]. 云南师范大学学报(自然科学版), 2013, 0(3): 1-5 |
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| 作者姓名： | 易庭丰 |
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| 作者单位： | 云南师范大学物理与电子信息学院,云南昆明650500 |
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| 基金项目： | 云南省自然科学基金资助项目（2011FZ081）;云南省引力理论创新团队资助项目;云南省高校天体物理创新团队资助项目. |
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| 摘 要： | 耀变体的高光度和快速光变表明相对论聚束效应在其辐射中起着重要作用,因此聚束效应所对应的多普勒因子是认识耀变体基本性质的重要参量。多普勒因子与喷流的洛仑兹因子及视角两个量有关,但是这两个量都难以观测。现给出一种新经验公式,通过最小光变时标与中心黑洞质量估算了一个耀变体样本的多普勒因子。
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| 关 键 词： | 光变时标 黑洞质量 多普勒因子 |
Estimation of the Doppler Factor for Blazars by Minimum Variability Timescale and Central Black Hole Mass |
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| YI Ting-feng. Estimation of the Doppler Factor for Blazars by Minimum Variability Timescale and Central Black Hole Mass[J]. Journal of Yunnan Normal University (Natural Sciences Edition), 2013, 0(3): 1-5 |
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| Authors: | YI Ting-feng |
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| Affiliation: | YI Ting-feng (School of Physics and Electronic Information, Yunnan Normal University, Kunming 650092,China) |
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| Abstract: | The high luminosity and rapid variability detected in blazars imply that the beaming effect plays an important role in these sources. The Doppler factor, depending on two unobservable parameters （Lorentz factor and viewing angle）, is very important for understanding the basic properties of blazars. In this paper, we gave a new experience formula. The Doppler factors （ δm ） Of 44 Blazars were calculated by the experience formula, using the minimum variability timescales （△tobsmin） and the mass of central black hole （MH）. |
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| Keywords: | Minimum variability timescale Black hole mass Doppler factor |
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