Studying the Physics of Extreme Accretion onto Compact Objects

研究致密物体极端吸积的物理学

• 批准号: 1786890
• 金额: --
• 依托单位: University of Cambridge
• 依托单位国家: 英国
• 项目类别: Studentship
• 财政年份: 2016
• 资助国家: 英国
• 起止时间: 2016 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=studentship-1786890
• 关键词: Studying; Physics; Extreme; Accretion; onto

During the first two years I will search for winds from Ultraluminous X-ray objects (ULX) in the brightest XMM-Newton mission ULX gratings archive and the newly awarded observations, publish the wind detections and test the theoretical scenarios predicted for ULXs. I will make use of novel techniques in high resolution X-ray spectroscopy. The analysis of the spectral shape and variability of ULXs will also enable the search for intermediate mass black hole candidates. Following this I will compare the ULX wind energetics with the luminosities of optical nebulae powered by ULXs and the local star formation to constrain ULX feedback. I will also compare theoretical models of super-Eddington accretion with physical characteristics of ultrafast winds (UFOs) in Active Galactic Nuclei (AGN) and ULXs to understand the different launching mechanisms in both AGN and ULXs and their accretion rates. Simultaneously, I will study supermassive black holes in AGN using various X-ray, optical and infrared observatories to determine the Physics of their variability and obscuration and broaden my knowledge of extreme accretion.Additionally, I am going to submit proposals to the XMM-Newton, Chandra and NuSTAR X-ray missions and prepare science cases for the new ASTRO-H2 mission (2020), replacing the powerful though brief Hitomi satellite, to observe the highly-energetic Fe K AGN and ULX UFOs with unprecedented resolution and prepare science cases for the very large European and STFC-funded ATHENA mission.

在最初的两年里，我将在最亮的XMM-牛顿使命ULX光栅档案和新获得的观测资料中寻找来自超铝X射线天体（ULX）的风，发表风的探测结果，并测试对ULX预测的理论情景。我将利用高分辨率X射线光谱学的新技术。对ULX的光谱形状和可变性的分析也将使寻找中等质量黑洞候选者成为可能。在此之后，我将比较ULX风能量与ULX驱动的光学星云的光度和本地星星形成，以约束ULX反馈。我还将比较超爱丁顿吸积的理论模型与活动星系核（AGN）和ULX中超快风（UFO）的物理特性，以了解AGN和ULX中不同的发射机制及其吸积率。同时，我将使用各种X射线，光学和红外天文台研究AGN中的超大质量黑洞，以确定其变化和遮蔽的物理学，并扩大我对极端吸积的知识。此外，我将向XMM-牛顿，钱德拉和努斯塔X射线任务提交建议，并为新的ASTRO-H2使命（2020年）准备科学案例，取代强大但短暂的Hitomi卫星，以前所未有的分辨率观察高能Fe K AGN和ULX UFO，并为欧洲和STFC资助的大型ATHENA使命准备科学案例。

项目成果

An ionized accretion disc wind in Hercules X-1

• DOI: 10.1093/mnras/stz3200
• 发表时间: 2019-10
• 期刊: Monthly Notices of the Royal Astronomical Society
• 影响因子: 4.8
• 作者: P. Kosec;A. Fabian;Ciro Pinto;D. Walton;S. Dyda;C. Reynolds

Searching for Outflows in Ultraluminous X-ray Sources Through High-Resolution X-ray Spectroscopy

• DOI: 10.1093/mnras/stx2695
• 发表时间: 2017-10
• 期刊: Monthly Notices of the Royal Astronomical Society
• 影响因子: 4.8
• 作者: P. Kosec;C. Pinto;A. Fabian;D. Walton

Investigating the Evolution of the Dual AGN System ESO 509-IG066

• DOI: 10.3847/1538-4357/aa932e
• 发表时间: 2017-10
• 期刊: The Astrophysical Journal
• 作者: P. Kosec;M. Brightman;D. Stern;F. Müller-Sánchez;M. Koss;K. Oh;R. Assef;P. Gandhi;F. Harrison;H. Jun;A. Masini;A. Masini;C. Ricci;C. Ricci;C. Ricci;D. Walton;E. Treister;J. Comerford;G. Privon

Studying Accretion Disc Winds with X-ray Spectroscopy

用 X 射线光谱研究吸积盘风

• DOI: 10.17863/cam.57704
• 发表时间: 2020
• 作者: Kosec P

Evidence for a variable Ultrafast Outflow in the newly discovered Ultraluminous Pulsar NGC 300 ULX-1

• DOI: 10.1093/mnras/sty1626
• 发表时间: 2018-03
• 期刊: Monthly Notices of the Royal Astronomical Society
• 影响因子: 4.8
• 作者: P. Kosec;Ciro Pinto;D. Walton;A. Fabian;M. Bachetti;M. Brightman;F. Fürst;B. Grefenstette