Документ взят из кэша поисковой машины. Адрес оригинального документа : http://hea.iki.rssi.ru/conf/hea2007/presentations.orig/25.12.07/krivonos.pdf Дата изменения: Sat Dec 29 14:52:42 2007 Дата индексирования: Tue Oct 2 01:15:38 2012 Кодировка: Поисковые слова: m 80

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, / MPA, Garching


17-60
12% sky ­ 1 mCrab 80% sky ­ 5 mCrab

403 217 , 137 49

"" 200-300 1043 /


Large Scale Structure of the Local Universe

Mpc 0 50

M 100

pc


Large Scale Structure of the Local Universe
D < 40 Local Group 40 < D < 80

Peebles, 1993

Kraan-Korteweg & Lahav, Sci. Am. 1998


AGN surface density contrast
NP 268o 27
o

11:1


AGN volume density (D<70 Mpc)

40 AGNs

n = 1.4 x 10-3 / Mpc3 , L > 1041 erg/s


AGN volume density (D<70 Mpc)
Virgo

Hydra

Centaurus Perseus Pisces

Pavo

40 AGNs

n = 1.4 x 10-3 / Mpc3 , L > 1041 erg/s


Volume density excess of nearby (<70 Mpc)
40 AGNs: (INTEGRAL survey)

~5,000 IR galaxies: (IRAS PSCz survey)


X-Ray AGN bias factor
b=
We use IRAS PSCz survey as matter tracer ( bIR1 )


X-Ray AGN bias factor
bAGN = 1.0 bAGN = 0.80 ± 0.13

=> AGNs ­ good matter tracers on 10-70 Mpc scale => SMBH activity independent from density of galaxies


Historic remark: HEAO 1 / A2 survey
HEAO1 A2 Survey

Piccinotti et al. 1982

INTEGRAL survey

Krivonos et. al. 2007





Summary
=> Already now INTEGRAL is able to probe Large Scale Structure of the local Universe => Density fluctuations of matter can be linearly translated into the density fluctuation of Hard X-ray emitting AGNs at zero redshift. => SMBH activity independent from density of galaxies on scales 10-70 Mpc


Galactic and extragalactic source counts

ASCA, Sugizaki et al., (2001)

INTEGRAL gal. Sources |b|<5

INTEGRAL AGNs


All-sky survey / 17-60 keV

Coded-mask based telescope IBIS: · FOV 3030 degrees. · Angular resolution 12' Detector ISGRI: · Survey energy range 17-60 keV

Survey Sensitivity: 12% sky ­ 1 mCrab 80% sky ­ 5 mCrab Effective "depth" of the survey 300-400 Mpc for a source with typical luminosity 10^43 erg/s
1 mCrab = 1.4 10-11 erg/s/cm
2


AGN volume density (D<70 Mpc)

15,000 gal. IRAS PSCz Redshift Survey

40 AGNs

n = 1.4 x 10-3 / Mpc3 , L > 1041 erg/s


Nearby Active Galactic Nuclei (|b|>5)

· 66 non-blazar AGNs · 3 clusters of galaxies


Luminosity Function

Consistent with: Beckmann et al. 2006 20-40 keV LF (smalle r INTEGRAL sample) RXTE Slew Surv ey 3-20 keV LF (Saz onov & Revnivtsev 2004) HEAO-1 2-10 keV LF (Shinoz aki et al. 2006)

1) Volume density (L>1042) 2 x 10-4 / Mpc3 2) Volume emissivity (L>1041) 12 1038 erg/s/ Mpc

3


Extragalactic source counts
N( F > 1 mCrab)=M F
-a

~1% CXB

a = 1.62 ± 0.15 M = (5.7 ± 0.7) 10-3 / deg2
Expected Measured


17-60 keV, |b|>5o, z < 0.1

Most of the unidentified sources in the Galactic Plane should be of Galactic origin