Collaborative Research: Connecting 3D Simulations of Magnetized Disks and Jets with Direct Event Horizon Telescope Observations

合作研究：将磁化盘和喷流的 3D 模拟与直接事件视界望远镜观测联系起来

基本信息

批准号：
1716536
负责人：
Sheperd Doeleman
金额：
$ 12.59万
依托单位：
Smithsonian Institution Astrophysical Observatory
依托单位国家：
美国
项目类别：
Standard Grant
财政年份：
2017
资助国家：
美国
起止时间：
2017-06-01 至 2021-05-31
项目状态：
已结题

来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=1716536&HistoricalAwards=false
关键词：
Collaborative Research Connecting 3D Simulations

项目摘要

Black holes (BHs) are the most compact objects predicted by Einstein's theory of gravity. Despite their tiny size, BHs are powerful actors on the cosmic stage. Most galaxies have massive BHs at their centers. Such BHs can drive outflows and jets that extend over galactic scales, and beyond. The processes that link the most compact and the most extended scales originate near the BH event horizon. Images of that region have only recently become available, thanks to the NSF-supported Event Horizon Telescope (EHT). The team will obtain new EHT images that, for the first time, trace magnetic fields. The team will conduct state-of-the-art simulations to compare to the new images. This will provide strong constraints on conditions near the BH event horizon. Senior team members will train junior team members. The team will also partner with D.C.'s Koshland Science Museum to engage with students from groups underrepresented in STEM.The team will (1) produce state-of-the-art simulations of BH accretion and jets with fully dynamical gas-radiation interaction that accounts for kinetic physics relevant to systems like Sagittarius A* and M87, (2) undertake polarimetric observations with the EHT to resolve BH emission on event horizon scales in Sagittarius A* and M87, and (3) apply the simulations to enable realistic modeling of the polarimetry.

黑洞（BHS）是爱因斯坦重力理论预测的最紧凑的对象。尽管大小很小，但BHS还是宇宙舞台上有力的演员。大多数星系在其中心都有大量的BHS。这样的BHS可以驱动流出和喷气机，以延伸到银河尺度及以后。将最紧凑和最扩展的量表连接起来的过程附近是BH事件范围。得益于NSF支持的事件地平线望远镜（EHT），该区域的图像直到最近才获得。该团队将获得新的EHT图像，这是首次追踪磁场。该团队将进行最新的模拟，以与新图像进行比较。这将在BH事件视野附近的条件下提供强大的限制。高级团队成员将培训初级团队成员。 The team will also partner with D.C.'s Koshland Science Museum to engage with students from groups underrepresented in STEM.The team will (1) produce state-of-the-art simulations of BH accretion and jets with fully dynamical gas-radiation interaction that accounts for kinetic physics relevant to systems like Sagittarius A* and M87, (2) undertake polarimetric observations with the EHT to resolve BH emission on event horizon Sagittarius A*和M87中的尺度，（3）应用模拟来实现极化法的现实建模。

项目成果

期刊论文数量（23）

专著数量（0）

科研奖励数量（0）

会议论文数量（0）

专利数量（0）

The Shadow of a Spherically Accreting Black Hole

DOI：
10.3847/2041-8213/ab518c
发表时间：
2019-10
期刊：
The Astrophysical Journal Letters
影响因子：
0
作者：
R. Narayan;Michael D. Johnson;C. Gammie
通讯作者：
R. Narayan;Michael D. Johnson;C. Gammie

The Scattering and Intrinsic Structure of Sagittarius A* at Radio Wavelengths

DOI：
10.3847/1538-4357/aadcff
发表时间：
2018-08
期刊：
The Astrophysical Journal
影响因子：
0
作者：
Michael D. Johnson;R. Narayan;D. Psaltis;L. Blackburn;Y. Kovalev;C. Gwinn;Guangyao Zhao;G. Bower-G.-Bow
通讯作者：
Michael D. Johnson;R. Narayan;D. Psaltis;L. Blackburn;Y. Kovalev;C. Gwinn;Guangyao Zhao;G. Bower-G.-Bow

Testing General Relativity with the Black Hole Shadow Size and Asymmetry of Sagittarius A*: Limitations from Interstellar Scattering

用黑洞阴影大小和人马座 A* 的不对称性测试广义相对论：星际散射的局限性