Resolving accretion flows in nearby active galactic nuclei with the Event Horizon Telescope
Resolving accretion flows in nearby active galactic nuclei with the Event Horizon Telescope
复制标题
使用事件视界望远镜解析附近活动星系核中的吸积流
DOI:
10.1093/mnras/stz2874
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发表时间:
2019-07
影响因子:
4.8
通讯作者:
Yaherlyn Diaz
中科院分区:
文献类型:
--
作者:
Bidisha B;yopadhyay;Fu-Guo Xie;Neil M Nagar;Dominik R G Schleicher;Venkatessh Ramakrishnan;Patricia Arévalo;Elena López;Yaherlyn Diaz
The Event Horizon Telescope (EHT), now with its first ever image of the photon ring around the supermassive black hole of M87, provides a unique opportunity to probe the physics of supermassive black holes through Very Long Baseline Interferometry (VLBI), such as the existence of the event horizon, the accretion processes as well as jet formation in low-luminosity AGNs (LLAGNs). We build a theoretical model that includes an advection dominated accretion flow (ADAF) with emission from thermal and non-thermal electrons in the flow and a simple radio jet outflow. The predicted spectral energy distribution (SED) of this model is compared to sub-arcsec resolution observations to get the best estimates of the model parameters. The model-predicted radial emission profiles at different frequency bands are used to predict whether the inflow can be resolved by the EHT or with telescopes such as the Global 3-mm VLBI array (GMVA). In this work the model is initially tested with high-resolution SED data of M87 and then applied to our sample of five galaxies (Cen A, M84, NGC 4594, NGC 3998, and NGC 4278). The model then allows us to predict if one can detect and resolve the inflow for any of these galaxies using the EHT or GMVA within an 8 h integration time.
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DOI:
10.1111/j.1365-2966.2008.14377.x
发表时间:
2009
影响因子:
4.8
作者:
Cappellari M
通讯作者:
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影响因子:
6.3
作者:
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通讯作者:
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DOI:
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发表时间:
2005-02
期刊:
The Astrophysical Journal
影响因子:
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通讯作者:
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影响因子:
4.8
作者:
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通讯作者:
S. Ehlert;S. Ehlert;Norbert Werner;Norbert Werner;A. Simionescu;A. Simionescu;Steven W. Allen;Steven W. Allen;J. Kenney;E. Million;A. Finoguenov;A. Finoguenov
DOI:
10.1088/2041-8205/783/2/l33
发表时间:
2014-02
期刊:
The Astrophysical Journal Letters
影响因子:
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作者:
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通讯作者:
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