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  1. OA@INAF
  2. PRODOTTI RICERCA INAF
  3. 1 CONTRIBUTI IN RIVISTE (Journal articles)
  4. 1.01 Articoli in rivista
Please use this identifier to cite or link to this item: http://hdl.handle.net/20.500.12386/28272
Title: How to constrain mass and spin of supermassive black holes through their disk emission
Authors: CAMPITIELLO, SAMUELE
GHISELLINI, Gabriele 
Sbarrato, Tullia 
CALDERONE, GIORGIO 
Issue Date: 2018
Journal: ASTRONOMY & ASTROPHYSICS 
Number: 612
First Page: A59
Abstract: We investigate the global properties of the radiation emitted by the accretion disk around Kerr black holes. Using the Kerr blackbody numerical model, we build an analytic approximation of the disk emission features focusing on the pattern of the produced radiation as a function of the black hole spin, mass, accretion rate and viewing angle. The assumption of having a geometrically thin disk limits our analysis to systems emitting below 0.3 of the Eddington luminosity. We apply this analytical model to four blazars (whose jets are pointing at us) at high redshift that show clear signatures of disk emission. For them, we derive the black hole masses as a function of spin. If these jetted sources are powered by the black hole rotation, they must have high spin values, further constraining their masses.
URI: http://hdl.handle.net/20.500.12386/28272
URL: https://www.aanda.org/articles/aa/abs/2018/04/aa31897-17/aa31897-17.html
ISSN: 0004-6361
DOI: 10.1051/0004-6361/201731897
Bibcode ADS: 2018A&A...612A..59C
Fulltext: open
Appears in Collections:1.01 Articoli in rivista

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