河外水脉泽源的X-ray卫星观测数据分析
发布时间：2018-12-25 18:03
【摘要】： 随着观测设备的大力发展,如望远镜空间分辨率、灵敏度的提高和谱线接收机性能的改进,特别是VLBI(甚长基线干涉仪射电天文测量系统)的投入使用,使得水脉泽辐射在越来越多的河外星系中被检测到。观测和研究表明河外水脉泽辐射通常与活动星系核(AGN)相关,且绝大多数脉泽源位于第二型的活动星系核区。这类星系的核区被高密度的气体严重遮掩,故而从光学和红外波段得到的观测数据难以探测到其核区的内部环境;而具有穿透性的X-ray辐射为我们提供了一个研究模糊的活动星系核核区内部环境非常有效的工具,并且这类水脉泽的触发源被认为是核区的X-ray源通过碰撞抽运产生的,因此通过对星系核区的X-ray辐射的观测以及理论研究,可以探索这类水脉泽的产生环境和激发机制等。另外,X-ray辐射区可能位于AGN内区,且非常靠近黑洞视界,X-ray连续谱型,特别是Fe线包含了黑洞附近极端物理条件下的丰富信息;因此,对X-ray谱的研究,可以探索AGN核区的物理环境,得到吸积盘和黑洞附近物质的一些物理性质和物理参量,以及探测吸积流结构等。近年来由于X-ray天文学的大力发展,尤其是高灵敏度、高分辨率的XMM-Newton和Chandra卫星被相继发射和使用,许多活动星系核已经被观测,大量数据已经或正在被释放,这些为我们研究水脉泽寄主星系的活动星系核提供了很好的条件。同时,通过对水脉泽寄主星系各物理参量之间可能存在的相关性进行研究,进而了解这类脉泽所处的物理环境,研究它们产生的物理机制。本论文主要对水脉泽寄主星系的X-ray观测资料进行处理和分析,主要由以下三部分组成。 论文的第一部分调研了已公布的水脉泽寄主活动星系核的X-ray观测情况及其被处理情况。 论文的第二部分研究XMM-Newton卫星观测数据的处理方法,并对未被处理的河外水脉泽寄主星系NGC7479的XMM-Newton观测资料进行了处理和分析,我们不仅分析了其核区的X-ray辐射,而且对这个星系中的一个亮X-ray源进行了分析和讨论。 论文的第三部分主要分析和研究了河外水脉泽寄主AGN吸积率和非水脉泽寄主AGN吸积率的区别以及水脉泽光度与吸积率之间的关系。
[Abstract]:With the rapid development of observational equipment, such as the spatial resolution of telescopes, the improvement of sensitivity and the improvement of spectral line receiver performance, especially VLBI (very long baseline Interferometer Radio Astronomical Measurement system), Water maser radiation is being detected in a growing number of extragalactic systems. Observations and studies show that the extragalactic water maser radiation is usually associated with the active galactic nucleus (AGN), and most of the maser sources are located in the second type active galactic nucleus region. The nuclear regions of these galaxies are heavily obscured by high density gas, so it is difficult to detect the internal environment of the nuclear region by the observed data from optical and infrared bands. The penetrating X-ray radiation provides us with a very effective tool to study the internal environment of the indistinct active galactic nuclear region, and this type of water maser trigger source is thought to be generated by collision pumping of the X-ray source in the nuclear region. Therefore, the generation environment and excitation mechanism of this kind of water maser can be explored through the observation and theoretical study of the X-ray radiation in the galactic nucleus region. In addition, the X-ray radiation region may be located in the inner region of AGN and is very close to the event horizon of the black hole. The X-ray continuum type, especially the Fe line, contains abundant information under extreme physical conditions near the black hole. Therefore, the study of the X-ray spectrum can explore the physical environment of the AGN nuclear region, obtain some physical properties and physical parameters of the accretion disk and the matter near the black hole, and detect the accretion flow structure. In recent years, due to the rapid development of X-ray astronomy, especially the launch and use of high-sensitivity, high-resolution XMM-Newton and Chandra satellites, many active galactic nuclei have been observed and a large number of data have been or are being released. These provide a good condition for us to study the active galactic nuclei of host galaxies. At the same time, by studying the possible correlation between the physical parameters of the host galaxies, we can understand the physical environment of these masers and study their physical mechanism. In this paper, the X-ray data of the host galaxies are processed and analyzed, which consists of three parts. In the first part of the paper, we investigate the X-ray observations and their treatment of the water maser host active galactic nuclei (AGNs). In the second part of the thesis, we study the processing method of XMM-Newton satellite observation data, and process and analyze the XMM-Newton observation data of NGC7479, an untreated extragalactic maser host galaxy. We not only analyze the X-ray radiation in its nuclear region, A bright X-ray source in this galaxy is also analyzed and discussed. In the third part of the paper, the difference between the AGN accretion rate and the non-water maser host AGN accretion rate and the relationship between the water maser luminosity and the accretion rate are analyzed and studied.
【学位授予单位】：广州大学
【学位级别】：硕士
【学位授予年份】：2010
【分类号】：P111.5
本文编号：2391459
[Abstract]:With the rapid development of observational equipment, such as the spatial resolution of telescopes, the improvement of sensitivity and the improvement of spectral line receiver performance, especially VLBI (very long baseline Interferometer Radio Astronomical Measurement system), Water maser radiation is being detected in a growing number of extragalactic systems. Observations and studies show that the extragalactic water maser radiation is usually associated with the active galactic nucleus (AGN), and most of the maser sources are located in the second type active galactic nucleus region. The nuclear regions of these galaxies are heavily obscured by high density gas, so it is difficult to detect the internal environment of the nuclear region by the observed data from optical and infrared bands. The penetrating X-ray radiation provides us with a very effective tool to study the internal environment of the indistinct active galactic nuclear region, and this type of water maser trigger source is thought to be generated by collision pumping of the X-ray source in the nuclear region. Therefore, the generation environment and excitation mechanism of this kind of water maser can be explored through the observation and theoretical study of the X-ray radiation in the galactic nucleus region. In addition, the X-ray radiation region may be located in the inner region of AGN and is very close to the event horizon of the black hole. The X-ray continuum type, especially the Fe line, contains abundant information under extreme physical conditions near the black hole. Therefore, the study of the X-ray spectrum can explore the physical environment of the AGN nuclear region, obtain some physical properties and physical parameters of the accretion disk and the matter near the black hole, and detect the accretion flow structure. In recent years, due to the rapid development of X-ray astronomy, especially the launch and use of high-sensitivity, high-resolution XMM-Newton and Chandra satellites, many active galactic nuclei have been observed and a large number of data have been or are being released. These provide a good condition for us to study the active galactic nuclei of host galaxies. At the same time, by studying the possible correlation between the physical parameters of the host galaxies, we can understand the physical environment of these masers and study their physical mechanism. In this paper, the X-ray data of the host galaxies are processed and analyzed, which consists of three parts. In the first part of the paper, we investigate the X-ray observations and their treatment of the water maser host active galactic nuclei (AGNs). In the second part of the thesis, we study the processing method of XMM-Newton satellite observation data, and process and analyze the XMM-Newton observation data of NGC7479, an untreated extragalactic maser host galaxy. We not only analyze the X-ray radiation in its nuclear region, A bright X-ray source in this galaxy is also analyzed and discussed. In the third part of the paper, the difference between the AGN accretion rate and the non-water maser host AGN accretion rate and the relationship between the water maser luminosity and the accretion rate are analyzed and studied.
【学位授予单位】：广州大学
【学位级别】：硕士
【学位授予年份】：2010
【分类号】：P111.5
【参考文献】
相关期刊论文 前6条
1 郭仟;张江水;;脉泽研究及其应用[J];湖南文理学院学报(自然科学版);2008年02期
2 ;Chandra observations of the H_2O megamaser galaxy Mrk1210[J];Science in China(Series G:Physics,Mechanics & Astronomy);2009年06期
3 ;X-Ray Properties of the Point Source Population in the Spiral Galaxy NGC 5055 (M63) with Chandra[J];Chinese Journal of Astronomy and Astrophysics;2007年03期
4 ;Extragalactic H_2O Megamaser Sources:Central Black Holes,Nuclear X-ray and Maser Emissions[J];Chinese Journal of Astronomy and Astrophysics;2008年05期
5 徐烨,蒋栋荣,郑兴武,俞志尧;河外H_2O超脉泽辐射[J];天文学进展;2001年03期
6 张江水;;河外水脉泽的研究进展[J];天文学进展;2007年01期
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