Understanding Blazar Jets - The OVRO 40-m Blazar Monitoring Program

了解 Blazar Jets - OVRO 40-m Blazar 监测计划

• 批准号: 2025713
• 金额: --
• 依托单位: University of Manchester
• 依托单位国家: 英国
• 项目类别: Studentship
• 财政年份: 2017
• 资助国家: 英国
• 起止时间: 2017 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=studentship-2025713
• 关键词: Understanding; Blazar; Jets; OVRO; 40

The project is centred round the radio monitoring of 1500 Blazars with the 40-m telescope at the Owens Valley Radio Observatory (OVRO, California, USA) and then producing a joint analysis with Fermi gamma ray data. Blazars are powered by accretion onto rotating super-massive black holes which create relativistic jets along the spin axis, though the detailed mechanism of this process still remains elusive. The jets in Blazars are aligned at a small angle to the line of sight, with the result that relativistic beaming dramatically boosts the apparent luminosity and variability. One avenue for progressing our understanding of jet production is provided by the Fermi Gamma-ray Space Telescope, which continuously monitors all gamma-ray bright Blazars, allowing an unprecedented opportunity for the systematic study of Blazar jets. The exact location of the gamma-ray emission region and its proximity to the central black hole remain subjects of debate, with two main competing classes of models for the GeV emission region. Testing these models requires a multiwavelength approach, combining the Fermi observations with supporting radio observations from OVRO-40m to search for correlations in the light curves at different frequencies.

该项目以欧文斯山谷无线电天文台（美国加利福尼亚州OVRO）的40米望远镜对1500米的无线电监测进行围绕，然后通过Fermi Gamma Ray Data进行联合分析。尽管此过程的详细机制仍然难以捉摸，但大麻量是通过积聚到旋转超质量黑洞的旋转超质量黑洞的动力。大麻中的喷气机与视线的小角度对齐，结果相对论闪光显着提高了明显的光度和可变性。 Fermi Gamma-ray太空望远镜提供了一种提高我们对喷气生产的理解的途径，该望远镜不断监视所有伽马射线明亮的大麻，从而为系统研究Blazar Jets提供了前所未有的机会。伽马射线发射区域的确切位置及其与中央黑洞的邻近性仍然是辩论的主题，其中有两种主要的GEV发射区域模型类别。测试这些模型需要一种多波长的方法，将费米的观察结果与从OVRO-40M的支持无线电观察结合在一起，以在不同频率下在光曲线中搜索相关性。

项目成果

The Relativistic Jet Orientation and Host Galaxy of the Peculiar Blazar PKS 1413+135

奇特耀变体 PKS 1413 135 的相对论喷流方向和主星系

• DOI: 10.3847/1538-4357/abd08c
• 发表时间: 2021
• 期刊: The Astrophysical Journal
• 作者: Readhead A