Hard X-ray census of nearby active galaxies and implications for the cosmic history of black hole growth
Zusammenfassung der Projektergebnisse
According to recent observations, supermassive black holes (SMBHs) have dramatically evolved over cosmic time and affected the formation and evolution of galaxies. Despite the success of deep X-ray surveys in providing us rich observational material on active galactic nuclei (AGN) at high redshifts, the AGN census at low redshifts remained limited until recently. Therefore, six years ago we proposed for the DFG Priority Programme 1177 to fill this gap in the history of SMBH growth with the help of an all-sky hard X-ray survey performed by the INTEGRAL observatory. Using this survey, we have measured the hard X-ray luminosity function and absorption column density distribution of local AGN. We have also tentatively detected a high-energy rollover in the cumulative hard X-ray spectrum of local AGN, which provides strong support to the popular hypothesis that the cosmic X-ray background is an integral record of SMBH growth. We determined the total energy release by AGN and therefore the total growth rate of SMBHs in the local Universe which is important “redshift-zero” point in the history of SMBH growth.
Projektbezogene Publikationen (Auswahl)
- “Hard X-ray survey of the Galactic plane region in Crux: A catalog of sources”, 2006, Astron. Lett. 32, 145
Revnivtsev M., Sazonov S., Molkov S., Lutovinov A., Churazov E., Sunyaev R.
(Siehe online unter https://doi.org/10.1134/S1063773706030017) - “Identification of four RXTE Slew Survey sources with nearby luminous active galactic nuclei”, 2006, A&A, 448, L49
Revnivtsev M., Sazonov S., Churazov E., Trudolyubov S.
(Siehe online unter https://doi.org/10.1051/0004-6361:200500233) - ÏNTEGRAL/IBIS all-sky survey in hard X-rays”, 2007, A&A, 475, 775
Krivonos R., Revnivtsev M., Lutovinov A., Sazonov S., Churazov E., Sunyaev R.
(Siehe online unter https://doi.org/10.1051/0004-6361:20077191) - “Hard X-ray emission of the Earth’s atmosphere: Monte Carlo simulations”, MNRAS, 2007, 377, 1726
Sazonov S., Churazov E., Sunyaev R., Revnivtsev M.
(Siehe online unter https://doi.org/10.1111/j.1365-2966.2007.11746.x) - “Hard X-ray luminosity function and absorption distribution of nearby AGN: INTEGRAL all-sky survey”, 2007, A&A, 462, 57
Sazonov S., Revnivtsev M., Krivonos R., Churazov E., Sunyaev R.
(Siehe online unter https://doi.org/10.1051/0004-6361:20066277) - “Hard X-ray luminosity function and absorption distribution of nearby AGN: INTEGRAL all-sky survey”, 2007, A&A, 462, 57
Sazonov S., Revnivtsev M., Krivonos R., Churazov E., Sunyaev R.
(Siehe online unter https://doi.org/10.1051/0004-6361:20066277) - “INTEGRAL observations of the cosmic X-ray background in the 5–100 keV range via occultation by the Earth”, 2007, A&A, 467, 529
Churazov E., Sunyaev R., Revnivtsev M., Sazonov S., Molkov S., Grebenev S. et al.
(Siehe online unter https://doi.org/10.1051/0004-6361:20066230) - “Earth X-ray albedo for CXB radiation in the 1–1000 keV band”, 2008, MNRAS, 385, 719
Churazov E., Sazonov S., Sunyaev R., Revnivtsev M.
(Siehe online unter https://doi.org/10.1111/j.1365-2966.2008.12918.x) - ”Cumulative hard X-ray spectrum of local AGN: a link to the cosmic X-ray background”, 2008, A&A, 482, 517
Sazonov S., Krivonos R., Revnivtsev M., Churazov E., Sunyaev R.
(Siehe online unter https://doi.org/10.1051/0004-6361:20078537) - ”Discovery of heavily obscured AGN among seven INTEGRAL hard X-ray sources observed by Chandra”, 2008, A&A, 487, 509
Sazonov S., Revnivtsev M., Burenin R., Churazov E., Sunyaev R., Forman W.R., Murray S.S.
(Siehe online unter https://doi.org/10.1051/0004-6361:200809528) - ”Large-scale variations of the cosmic X-ray background and the X-ray emissivity of the local Universe”, 2008, A&A, 483, 425
Revnivtsev M., Molkov S., Sazonov S.
(Siehe online unter https://doi.org/10.1051/0004-6361:20078691) - ”New active galactic nuclei among the INTEGRAL and Swift X-ray sources”, 2008, Astron. Lett., 34, 367
Burenin R., Mescheryakov A., Revnivtsev M., Sazonov S., Bikmaev I., Pavlinsky M., Sunyaev R.
(Siehe online unter https://doi.org/10.1134/S1063773708060017) - “INTEGRAL/IBIS 7-year All-Sky Hard X-ray Survey. I. Image reconstruction”, 2010, A&A, 519, id. A107
Krivonos, R., Revnivtsev, M., Tsygankov, S., Sazonov, S., Vikhlinin, A., Pavlinsky, M., Churazov, E., Sunyaev, R.
(Siehe online unter https://doi.org/10.1051/0004-6361/200913814) - “INTEGRAL/IBIS 7-year All-Sky Hard X-Ray Survey. II. Catalog of sources”, 2010, A&A, 523, id. A61
Krivonos, R., Tsygankov, S., Revnivtsev, M., Grebenev, S., Churazov, E., Sunyaev, R.
(Siehe online unter https://doi.org/10.1051/0004-6361/201014935) - “Statistical properties of local AGN based on the INTEGRAL/IBIS 7-year all-sky hard X-ray survey”, Proceedings 8th INTEGRAL Workshop (Dublin, Ireland), id. 6 (2010)
Sazonov, S., Churazov, E., Krivonos, R., Revnivtsev, M., Sunyaev, R.
