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Large-Scale Structure of the local Universe with INTEGRAL observatory
>200-300 , . .
It is well known from observations, that distribution of matter in the Universe is nearly uniform at scales >200-300 Mpc. Whereas at shorter distances we see significant inhomogeneities in matter distribution. Galaxies tend to form structures around practically empty regions ("voids").

200



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The positions of main mass concentrations in the local Universe are shown on the left. From galaxy surveys we know three mass agglomerations located near than 100 Mpc: the nearest Virgo galaxy cluster, Perseus-Pisces supercluster and huge mass concentration in the region of "Great Attractor" (Hydra-Centaurus).

70

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It is now widely accepted, that practically every galaxy in the local Universe has supermassive black hole and some of these black holes are AGNs. Therefore, it is reasonable to assume that the space density of AGNs is proportional to that of normal galaxies.

17-60

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* * * * * 74 87 20 41 (SGR,PSR,AXP,AB) 136

Huge amount of observational data was accumulated with INTEGRAL mission during four years in operation. More than hundred new hard X-ray sources were discovered during Galactic Center and Plane monitoring programs. Using dedicated extragalactic observations, the most sensitive at the moment hard X-ray all-sky survey was performed by efforts of Russian scientists (IKI RAN). The map of the survey is shown on the left. Catalog of sources contains 215 galactic sources (LMXBs, HMXBs, CVs etc.) and 136 extragalactic (AGNs and clusters of galaxies). The nature of 49 objects is not determined.







. . , 70 . : , - « ». Using Hard X-ray all-sky survey such important properties of nearby Universe as energetics of accretion to the supermassive black holes and large-scale mass distribution of matter were studied. On the left we show the distribution of detected AGNs in local Universe at distances less than 70 Mpc. The map is found in good agreement with known mass concentrations in the local Universe: clusters of galaxies in Virgo, Perseus-Pisces, and "Great Attractor".

. , . , . , . , . , . , « » R. Krivonos, M. Revnivtsev, A. Lutovinov, S. Sazonov, E. Churazov, R. Sunyaev, "INTEGRAL/IBIS all-sky survey in hard X-rays" astro-ph/07011836