A Determination of the Spectral Index of Galactic Synchrotron ...
Active Galactic nucleiadlibitum.oats.inaf.it/monaco/Lectures/AGN_slides.pdf · 2019-05-08 · A....
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Active Galactic nuclei Pierluigi Monaco, Radiative Processes 2018/2019
Transcript of Active Galactic nucleiadlibitum.oats.inaf.it/monaco/Lectures/AGN_slides.pdf · 2019-05-08 · A....
Active Galactic nuclei Pierluigi Monaco, Radiative Processes
2018/2019
G. Risaliti Fisica delle galassie (2014/2015)
Effetti Osservabili
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2) Emissione dalle regioni interne di un disco di accrescimento
Effetti “facilmente” osservabili:riga di emissione.La riga di emissione piu’ intensa attesa dalle regioni interne del disco e’ la Ka del ferro a ~6.4 keV
A. Marconi Fisica delle Galassie 2014/2015
MBH from H2O megamasers: NGC 4258
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MBH = (3.9±0.1) × 107 M! (Miyoshi+1995, Herrnstein+1999)Using rotation curves, it is also possible to measure centripetal acceleration of maser spots and derive galaxy distance (Herrnstein+1999)!
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Disk is also slightly warped
Ueda, Y., Akiyama, M., Hasinger, G., Miyaji, T., Watson, M.G. 2014, ApJ, 786, 104
Ueda, Y., Akiyama, M., Hasinger, G., Miyaji, T., Watson, M.G. 2014, ApJ, 786, 104
