Black Hole Accretion in Low-Luminosity Active Galactic Nuclei

低光度活动星系核中的黑洞吸积

基本信息

批准号：
0206006
负责人：
Eliot Quataert
金额：
$ 26.53万
依托单位：
University of California-Berkeley
依托单位国家：
美国
项目类别：
Continuing Grant
财政年份：
2002
资助国家：
美国
起止时间：
2002-09-01 至 2006-05-31
项目状态：
已结题

来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=0206006&HistoricalAwards=false
关键词：
Black Hole Accretion Low Luminosity

项目摘要

AST 0206006QuataertBlack holes, a prediction of Einstein's Theory of General Relativity, represent the ultimate victory of gravity over all other forces in the Universe; so much mass is concentrated in such a small volume that nothing, not even light, can escape. In the past decade, astronomers have provided convincing evidence that most galaxies in the Universe have a massive black hole at their center; these are a million to a billion times more massive than our Sun. Such black holes can be detected by several techniques, including the radiation produced by hot gas falling into the black hole. In some cases this gas produces more light than all of the billions of stars in the host galaxy which harbors the black hole. Most of the time, however, massive black holes produce surprisingly little radiation from accreting gas. This research is aimed at understanding this impressive range in energy production. Dr. Quataert and collaborators will carry out theoretical calculations of the properties of hot gas in the vicinity of a black hole, both analytically ("pencil and paper") and using computer simulations. They will focus on determining how much gas falls into a black hole and how much radiation this gas produces. They will then compare these results to observations from facilities such as the Very Large Array (VLA) Radio Telescope and the Chandra X-ray Observatory.***

AST 0206006 Quataertblack洞是爱因斯坦一般相对论理论的预测，代表了重力对宇宙中所有其他力量的最终胜利。如此之多的质量集中在如此小的体积上，以至于什么都没有，甚至没有光，都无法逃脱。在过去的十年中，天文学家提供了令人信服的证据，表明宇宙中的大多数星系在其中心都有一个巨大的黑洞。这些比我们的太阳高一百万到十亿倍。可以通过几种技术检测到这样的黑洞，包括热气掉入黑洞产生的辐射。在某些情况下，这种气体比主机银河系中的所有恒星中的所有恒星都产生的光更高，该恒星藏有黑洞。然而，大多数情况下，大量的黑洞产生的气体产生的辐射很少。这项研究旨在了解能源生产中的这一令人印象深刻的范围。 Quataert博士和合作者将对黑洞附近的热气（“铅笔和纸”）以及使用计算机模拟进行理论计算。他们将专注于确定气体落入黑洞中的多少以及这种气体产生多少辐射。然后，他们将将这些结果与来自非常大的阵列（VLA）射电望远镜和Chandra X射线天文台等设施的观察结果进行比较。***