本文關(guān)鍵詞：次級(jí)輻射對(duì)TeV耀變體高能輻射能譜貢獻(xiàn)研究　出處：《云南師范大學(xué)》2014年碩士論文　論文類型：學(xué)位論文

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【摘要】：本論文概括了活動(dòng)星系核的定義、特征、分類和活動(dòng)星系核的統(tǒng)一模型，并介紹了耀變體的觀測(cè)特征，能譜特點(diǎn)，，相對(duì)論聚束效應(yīng)、多普勒效應(yīng)以及耀變體的輻射過程和物理模型�；趩螀^(qū)域均勻的同步自康普頓(SynchrotronSelf-Compton,簡(jiǎn)寫為SSC)模型，我們用雙冪率電子譜和合適的模型參數(shù)分別對(duì)具有高能輻射的TeV耀變體Mrk501、PKS2005-489和1ES0229+200的多波段觀測(cè)結(jié)果進(jìn)行擬合，并考慮到星際背景光光子對(duì)高能輻射能譜的吸收。我們的計(jì)算結(jié)果表明SSC模型能產(chǎn)生TeV耀變Mrk501、PKS2005-489和1ES0229+200寧靜態(tài)下多波段的輻射能譜，并分別得出TeV耀變體Mrk501、PKS2005-489和1ES0229+200的磁場(chǎng)強(qiáng)度、聚束因子、輻射區(qū)域半徑等幾何參數(shù)和物理參數(shù)。 另外，除了考慮傳統(tǒng)的同步自康普頓模型外，還考慮到TeV耀變體的高能伽瑪射線光子與河外星系背景光光子的相互作用(VHE EBL e e)產(chǎn)生的次級(jí)伽瑪射線輻射對(duì)高能伽瑪射線輻射能譜有重要的貢獻(xiàn)。該模型表明噴流內(nèi)的極端性的相對(duì)論性電子的逆康普頓散射和TeV耀變體的高能伽瑪射線光子與星際背景光光子的相互作用有助于對(duì)高能伽瑪射線輻射能譜的研究。假定一個(gè)合適的電子譜和星際磁場(chǎng)強(qiáng)度，我們獲得較好的TeV耀變體1ES0229+200的能譜。數(shù)值計(jì)算結(jié)果表明，上述物理過程能得到1ES0229+200的多波段輻射能譜，在一定的條件下，正負(fù)電子(e)對(duì)可能產(chǎn)生新的伽瑪射線輻射通過這些e對(duì)的逆康普頓散射過程散射微波背景光光子而達(dá)到GeV能段。我們的研究結(jié)果表明：觀測(cè)到的TeV耀變體高能輻射硬譜可以用次級(jí)伽瑪光子對(duì)TeV耀變體的高能伽瑪射線輻射能譜有貢獻(xiàn)來解釋。
[Abstract]:In this paper, the definition, characteristics, classification and unified model of AGNs are summarized, and the observational characteristics, energy spectrum characteristics and relativistic bunching effect of AGNs are introduced. Doppler effect, radiative process and physical model of the radiant body. Based on the single region homogeneous Synchrotron Self-Compton model, the SSC-model is used in this paper. We use the double power electron spectrum and the appropriate model parameters to study the TeV variation Mrk501 with high energy radiation, respectively. The multi-band observations of PKS2005-489 and 1ES0229,200 are fitted. Taking into account the absorption of interstellar background photons to high energy radiation spectra, our results show that the SSC model can produce TeV Mrk501. The multiband radiation spectra of PKS2005-489 and 1ES0229200 are obtained, and the Mrk501 of TeV is obtained. The geometrical and physical parameters of PKS2005-489 and 1ES0229,200 are magnetic field intensity, bunching factor, radiative radius and so on. In addition, in addition to the consideration of the traditional synchronous self-Compton model. The interaction of high-energy gamma-ray photons of the TeV yaw with the background photons of the extragalactic system is also considered. The generated secondary gamma ray radiation has an important contribution to the energy spectrum of high energy gamma ray radiation. The model shows the inverse Compton scattering of relativistic electrons in the jet and the high energy gamma ray light of the TeV variation. The interaction of electrons with interstellar background photons is helpful to the study of high energy gamma-ray radiation spectra, assuming an appropriate electron spectrum and interstellar magnetic field intensity. We have obtained a good energy spectrum of 1ES0229200, a variant of TeV, and the numerical results show that the multiband radiation spectrum of 1ES0229200 can be obtained by the above physical process. Under certain conditions. Positron and negative electrons. New gamma-ray radiation may be generated through the inverse Compton scattering process of these e pairs and the microwave background photons are scattered to the GeV energy region. Our results show that:. The observed high energy radiative hard spectrum of the TeV variation can be explained by the contribution of the secondary gamma photon to the high energy gamma-ray radiation spectrum of the TeV variation.
【學(xué)位授予單位】：云南師范大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2014
【分類號(hào)】：P157.6

【參考文獻(xiàn)】

相關(guān)期刊論文 前1條

1 ;巴洛克服飾[J];大美術(shù);2007年03期

相關(guān)博士學(xué)位論文 前1條

1 張晉;活動(dòng)星系核及其延展區(qū)的高能輻射研究[D];中國(guó)科學(xué)院研究生院（云南天文臺(tái)）;2009年

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