J/other/AstBu/69.266 RATAN-600 flux densities of 37 blazars (Mufakharov+, 2014)
Study of the relation between the jet and accretion-disk emission in blazars
using RATAN-600 multifrequency data.
Mufakharov T.V., Sotnikova Yu.V., Erkenov A.K., Mingaliev M.G.
<Astrophys. Bull., 69, 266 (2014)>
=2014AstBu..69..266M 2014AstBu..69..266M
ADC_Keywords: Active gal. nuclei ; Galaxies, radio ; Radio continuum
Keywords: galaxies: general - galaxies: active - radio continuum: galaxies
Abstract:
We study the correlation between the emission from the broad-line
region (BLR) and the emission in other wavelength ranges (from radio
to x-ray) for the sample of 37 blazars (25 flat-spectrum radio quasars
(FSRQs) and 10 BL Lac blazars). Studying the relation between
luminosities in various wavebands and the BLR luminosity is an
effective method to examine the connection between the accretion rate
and the luminosity of the jet.We used simultaneous
RATAN-600measurements of blazar flux densities at six frequencies:
1.1, 2.3, 4.8, 7.7, 11.2, and 21.7GHz. The observational data from
other bands was taken from the literature. To determine the effect
produced by the state of the object on the correlation, for the radio
data we used the measurements obtained with the RATAN-600 in two
states-namely, the maximum and minimum flux density values.We show
that at some frequencies of the radio band, there exists a correlation
of emission with the emission in the BLR for two types of blazars. In
the FSRQ and BL Lac blazars, the correlation between the flux from the
BLR and the flux in the radio band is indistinguishable in all cases,
except for the case when a strong flux density variation was
considered for the BL Lac-type of blazars (tens of percent). At the
same time, the levels of significance for BL Lac (at certain
frequencies p is worse than 0.05) in the active state indicate only
the probable presence of connection. On the example of the sample, we
show that the variability of emission significantly affects the level
of correlation. Our results are consistent with the theoretical
predictions about the close relationship of the accretion disk and the
jet in blazars.
Description:
We study the correlation between the emission from the broad-line
region (BLR) and the emission in other wavelength ranges (from radio
to X-rays) for the sample of 37 blazars. The experimental data of the
RATAN-600 used in this work is presented in the table - flux density
values at two states (active and quiescent, in radio domain) at
frequencies of 1.1, 2.3, 4.8, 7.7, 11.2, and 21.7GHz.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table2.dat 100 71 Data for 37 objects
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See also:
J/A+A/495/691 : Blazars multifrequency catalogue, Roma-BZCAT (Massaro+ 2009)
J/MNRAS/450/2658 : RATAN-600 flux densities of 123 blazars (Mufakharov+, 2015)
Byte-by-byte Description of file: table2.dat
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Bytes Format Units Label Explanations
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1- 10 A10 --- Name Blazar name
12- 21 A10 --- Type Blazar type (1)
23 A1 --- State [fl] Object state: f=active, l=quiescent
25- 34 A10 "date" Epoch Epoch of observations (YYYY.MM.DD)
36- 40 F5.2 Jy F21.7 Flux density at 21.7GHz
42- 45 F4.2 Jy e_F21.7 Error of the flux density at 21.7GHz
47- 51 F5.2 Jy F11.2 Flux density at 11.2GHz
53- 56 F4.2 Jy e_F11.2 Error of the flux density at 11.2GHz
58- 62 F5.2 Jy F7.7 Flux density at 7.7GHz
64- 67 F4.2 Jy e_F7.7 Error of the flux density at 7.7GHz
69- 73 F5.2 Jy F4.8 Flux density at 4.8GHz
75- 78 F4.2 Jy e_F4.8 Error of the flux density at 4.8GHz
80- 84 F5.2 Jy F2.3 ? Flux density at 2.3GHz
86- 89 F4.2 Jy e_F2.3 ? Error of the flux density at 2.3GHz
91- 95 F5.2 Jy F1.1 ? Flux density at 1.1GHz
97-100 F4.2 Jy e_F1.1 ? Error of the flux density at 1.1GHz
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Note (1): Blazar type according to the Roma-BZCAT catalogue 3d edition
(Massaro et al., 2009A&A...495..691M 2009A&A...495..691M, Cat. J/A+A/495/691)
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Acknowledgements:
Timur Mufakharov, timur.mufakharov(at)gmail.com
(End) Timur Mufakharov [SAO, Russia], Patricia Vannier [CDS] 07-Aug-2015