本文選題：活動(dòng)星系核 + Blazar天體�。� 參考：《廣州大學(xué)》2012年碩士論文

【摘要】：活動(dòng)星系核（Active Galactic Nucleus）因?yàn)槠鋭×业幕顒?dòng)現(xiàn)象和極端的物理?xiàng)l件一直受到天文學(xué)家們的青睞。Blazar天體是活動(dòng)星系核的一個(gè)子類，它們的主要特征包括大幅度快速光變、高而變化的偏振、致密的射電輻射以及視超光速運(yùn)動(dòng)等。而噴流，作為活動(dòng)星系核的一個(gè)結(jié)構(gòu)，承載著巨大能量，又以接近光速運(yùn)動(dòng)并且還具有高度的準(zhǔn)直性，這一極端的物理?xiàng)l件讓天文學(xué)家們頗為感興趣。 關(guān)于Blazar天體相對(duì)論噴流效應(yīng)，，前人做了大量的工作，都是從束流指標(biāo)出發(fā)。比如1993年Ghisellini討論輻射等離子體的相對(duì)論運(yùn)動(dòng)的證據(jù)。發(fā)現(xiàn)多普勒因子以及其它的一些束流指標(biāo)，比如膨脹速率、核區(qū)與延展區(qū)的射電流量之比，都支持在噴流中亮結(jié)彈道運(yùn)動(dòng)的簡(jiǎn)單運(yùn)動(dòng)學(xué)模型。而且還發(fā)現(xiàn)超光速的源的平均洛倫茲因子的值和視角與我們?cè)噲D統(tǒng)一BL Lac天體和射電噪類星體與FRI，F(xiàn)R II射電星系分別相一致。1992年Wills等人文章中討論了核主導(dǎo)系數(shù)與偏振以及紅移的關(guān)系，并且討論了高光學(xué)偏振度類星體與平譜核主導(dǎo)類星體實(shí)際上同一類源。2002年和2003年Fan也都討論了Blazar的偏振度。2009年Fan發(fā)現(xiàn)射電光度與多普勒因子相關(guān)。所有這些均反映了Blazar噴流效應(yīng)。本文不但敘述了Blazar噴流效應(yīng)而且還研究了譜指數(shù)和偏振與核主導(dǎo)系數(shù)的關(guān)系。 全文共分四章，具體內(nèi)容如下： ⅰ)本文第一章主要概述活動(dòng)星系核的基本特征、分類及其統(tǒng)一模型。 ⅱ)第二章主要敘述噴流的相關(guān)性質(zhì)、相對(duì)論噴流模型以及相對(duì)論噴流效應(yīng)。 ⅲ)第三章，從核主導(dǎo)系數(shù)入手，分別分析其與譜指數(shù)以及偏振度的關(guān)系，并用觀測(cè)資料予以說明相對(duì)論噴流效應(yīng)。核主導(dǎo)系數(shù)R與譜指數(shù)αt存在一定的相關(guān)性，并且這種相關(guān)性可以用雙成分相對(duì)論噴流模型來解釋。另外，偏振度也與核主導(dǎo)系數(shù)存在一定的相關(guān)性。偏振度隨著核主導(dǎo)系數(shù)的增大而增大，但到一定程度時(shí)偏振度將幾乎保持不變。 ⅳ)第四章，對(duì)Blazar天體的兩個(gè)子類（蝎虎天體BL Lac和平譜射電源FSRQ）從發(fā)射線、偏振、光度、核主導(dǎo)系數(shù)、中央黑洞質(zhì)量等方面進(jìn)行比較。平譜射電源FSRQ具有顯著的發(fā)射線，而BL Lac天體沒有或者僅有很弱的發(fā)射線；平譜射電源FSRQ比BL Lac天體具有更低偏振和更高的光度；平譜射電源FSRQ比BLLac天體有較小的核主導(dǎo)系數(shù)值；平譜射電源FSRQ和BL Lac天體的中央黑洞質(zhì)量幾乎差不多。可以說X射線選BL Lac天體(XBLs)、射電選BL Lac天體(RBLs)和平譜射電源FSRQ存在一種連續(xù)特征，其中XBLs與FSRQ的差別比較大，而RBLs居于它們之間。 ⅴ)第五章，總結(jié)和展望。
[Abstract]:The active galactic nucleus (Active Galactic Nucleus) has been favored by astronomers for its intense activity and extreme physical conditions. The.Blazar objects are a subclass of the active galactic nuclei. Their main features include large and rapid light changes, high and varied polarization, dense radio radiation, and apparent superlight velocity. The jet, as a structure of the active galactic nucleus, carries huge energy and moves near the speed of light and also has a high degree of collimation. This extreme physical condition is very interesting to astronomers.
A large amount of work has been done on the relativistic jet effect of Blazar celestial bodies, such as the evidence of the relativistic motion of the radiation plasma in 1993, such as the evidence of the relativistic motion of the radiation plasma, such as the Doppler factor and some other beam parameters, such as the rate of expansion, and the ratio of the radio flow between the nuclear and the ductile areas. A simple kinematic model of the ballistic motion of a bright junction in a jet. Furthermore, it is found that the values of the mean Lorenz factor of the source of the superlight velocity and the angle of view are consistent with our attempt to unify the BL Lac celestial bodies and the radio and noise stars and FRI, FR II radio galaxies, respectively, Wills et al.,.1992, respectively, to discuss the relationship between the nuclear dominant coefficient and polarization and the red shift. The high optical polarization quasars and the flat spectral core dominant quasars are discussed in fact the same kind of source.2002 and Fan in 2003. The polarization degree of Blazar is also discussed in.2009 year Fan, and the correlation between the radio luminosity and the Doppler factor is found. All these reflect the Blazar jet effect. This paper not only describes the effect of the jet flow, but also describes the effect of the Blazar jet and also studies the effect of the jet. The relationship between spectral exponents and polarization and nuclear dominant coefficient.
The full text is divided into four chapters, and the specific contents are as follows:
The first chapter outlines the basic characteristics, classification and unified models of active galactic nuclei (AGN).
The second chapter mainly describes the related properties of jet, relativistic jet model and relativistic jet effect.
III) in the third chapter, the relationship between the spectral exponent and the degree of polarization is analyzed from the core dominant factor, and the relativistic jet effect is explained by the observation data. The nuclear dominant coefficient R has a certain correlation with the spectral exponent alpha T, and the correlation can be explained by the dual component relativistic jet model. There is a certain correlation between the conductance coefficient. The degree of polarization increases with the increase of the nuclear dominant coefficient, but to a certain extent, the degree of polarization will remain almost unchanged.
The fourth chapter is to compare the two subclasses of Blazar celestial bodies (the BL Lac peace spectrum source FSRQ) from the launch line, polarization, luminosity, core dominant coefficient, central black hole mass, and so on. The flat spectrum radio source FSRQ has a significant emission line, and the BL Lac celestial body has no or only a very weak emission line; the flat spectrum power source FSRQ is more than BL Lac days. The body has lower polarization and higher luminosity; the flat spectrum power source FSRQ has smaller nuclear dominant values than the BLLac celestial body; the mass of the central black hole of the flat spectrum source FSRQ and the BL Lac celestial body is almost the same. It is possible to say that the X ray selected the BL Lac celestial body (XBLs), the radio selected BL Lac celestial body (RBLs) and the peaceful spectral power source have a continuous feature, among which there is a continuous characteristic. The difference between Ls and FSRQ is large, while RBLs is between them.
The fifth chapter, summary and prospect.

【學(xué)位授予單位】：廣州大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2012
【分類號(hào)】：P157.7

【參考文獻(xiàn)】

相關(guān)期刊論文 前7條

1 張偉珊;袁聿海;;BL和FSRQ峰值頻率與寬波段譜指數(shù)的相關(guān)性[J];牡丹江師范學(xué)院學(xué)報(bào)(自然科學(xué)版);2007年03期

2 盧炬甫;活動(dòng)星系核的噴流[J];天文學(xué)進(jìn)展;1989年03期

3 曹新伍;活動(dòng)星系核中的噴流形成[J];天文學(xué)進(jìn)展;2002年01期

4 潘艷平;白金明;;Blazar噴流節(jié)點(diǎn)運(yùn)動(dòng)視速度的統(tǒng)計(jì)研究[J];天文學(xué)進(jìn)展;2008年02期

5 楊江河;楊如曙;;不同類Blazar的紅移及譜指數(shù)統(tǒng)計(jì)特性[J];天津理工大學(xué)學(xué)報(bào);2006年03期

6 盧炬甫,葉忠國;相對(duì)論性噴流的壓強(qiáng)準(zhǔn)直機(jī)制[J];Chinese Journal of Astronomy and Astrophysics;1989年02期

7 許梅;星系中心的巨大黑洞[J];現(xiàn)代物理知識(shí);2002年02期

相關(guān)博士學(xué)位論文 前1條

1 周博顏;活動(dòng)星系核的噴流進(jìn)動(dòng)[D];廈門大學(xué);2007年

相關(guān)碩士學(xué)位論文 前1條

1 陳志福;SDSS類星體譜線的測(cè)量及其應(yīng)用[D];廣州大學(xué);2011年

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