2006A&A...449L..21P


C.D.S. - SIMBAD4 rel 1.7 - 2019.11.14CET09:01:09

2006A&A...449L..21P - Astronomy and Astrophysics, volume 449, L21-25 (2006/4-2)

INTEGRAL observations of the blazar 3C 454.3 in outburst.

PIAN E., FOSCHINI L., BECKMANN V., SOLDI S., TUERLER M., GEHRELS N., GHISELLINI G., GIOMMI P., MARASCHI L., PURSIMO T., RAITERI C.M., TAGLIAFERRI G., TORNIKOSKI M., TOSTI G., TREVES A., VILLATA M., BARR P., COURVOISIER T.J.-L., DI COCCO G., HUDEC R., FUHRMANN L., MALAGUTI G., PERSIC M., TAVECCHIO F. and WALTER R.

Abstract (from CDS):

In Spring 2005, the blazar c454 underwent a dramatic outburst at all wavelengths from mm to X-rays. This prompted INTEGRAL observations, accomplished in 15-18 May 2005. The source was detected by the INTEGRAL instruments from 3 to 200keV in a bright state (∼5x10–10erg/s/cm2), at least a factor of 2-3 higher than previously observed. This is one of the brightest blazar detections achieved by INTEGRAL. During the 2.5 days of INTEGRAL monitoring, we detected a ∼20% decrease in the hard X-rays (20-40keV), indicating that we have sampled the decaying part of the flare. The decrease is less apparent in the soft X-rays (5-15keV). The simultaneous optical variations are weakly correlated with those at soft X-rays, and not clearly correlated with those at hard X-rays. The spectral energy distribution exhibits two components, as typically seen in blazars, which can be modeled with synchrotron radiation and inverse Compton scattering occurring in a region external to the broad line region.

Abstract Copyright:

Journal keyword(s): galaxies: active - X-rays: observations

Simbad objects: 11

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Number of rows : 11

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2020
#notes
1 8C 0716+714 BLL 07 21 53.4484901266 +71 20 36.362058601   15.5 14.17 14.27   ~ 1101 1
2 7C 083620.60+710405.00 QSO 08 41 24.36526906 +70 53 42.1730054     16.5 16.8   ~ 681 1
3 3C 273 BLL 12 29 06.6996828061 +02 03 08.598846466   13.05 14.830 14.11   ~ 5244 1
4 3C 279 QSO 12 56 11.1664521013 -05 47 21.531840471   18.01 17.75 15.87   ~ 2636 2
5 QSO B1830-211 QSO 18 33 39.92 -21 03 39.9     18.70 21   ~ 535 6
6 QSO B2209+236 QSO 22 12 05.96631138 +23 55 40.5438272   19   19.69   ~ 184 1
7 LEDA 68751 Sy1 22 23 49.7 -02 06 13   16.93 15.77 16.02   ~ 426 2
8 4C 11.69 QSO 22 32 36.40890517 +11 43 50.9040717   17.75 17.33     ~ 927 2
9 4C 19.74 QSO 22 50 32.777 +19 31 20.42     18.5     ~ 48 1
10 3C 454.3 QSO 22 53 57.74798 +16 08 53.5611   16.57 16.10 15.22   ~ 2441 2
11 QSO B2356+196 QSO 23 58 46.0854250641 +19 55 20.304437585     18.0 17.37   ~ 103 1

    Equat.    Gal    SGal    Ecl

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2019.11.14-09:01:09

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