2019ApJ...871...19Z


C.D.S. - SIMBAD4 rel 1.7 - 2021.04.15CEST06:36:33

2019ApJ...871...19Z - Astrophys. J., 871, 19-19 (2019/January-3)

The extended flare in CTA 102 in 2016 and 2017 within a hadronic model through cloud ablation by the relativistic jet.

ZACHARIAS M., BOTTCHER M., JANKOWSKY F., LENAIN J.-P., WAGNER S.J. and WIERZCHOLSKA A.

Abstract (from CDS):

The flat-spectrum radio quasar CTA 102 (redshift 1.037) exhibited a tremendously bright four-month-long outburst from late 2016 to early 2017. In a previous paper, we interpreted the event as the ablation of a gas cloud by the relativistic jet. The multiwavelength data have been reproduced very well within this model using a leptonic emission scenario. Here we expand that work by using a hadronic scenario, which gives us greater freedom with respect to the location of the emission region within the jet. This is important, since the inferred gas cloud parameters depend on the distance from the black hole. While the hadronic model faces the problem of invoking super-Eddington jet luminosities, it reproduces well the long-term trend and also days-long subflares. While the latter result in inferred cloud parameters that match those expected for clouds of the broad-line region, the long-term trend is not compatible with such an interpretation. We explore the possibilities that the cloud is from the atmosphere of a red giant star or comes from a star-forming region that passes through the jet. The latter could also explain the much longer-lasting activity phase of CTA 102 from late 2015 until early 2018.

Abstract Copyright: © 2019. The American Astronomical Society. All rights reserved.

Journal keyword(s): galaxies: active - quasars: individual: CTA 102 - radiation mechanisms: non-thermal - relativistic processes

Simbad objects: 5

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Number of rows : 5

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2021
#notes
1 QSO J0509+0541 BLL 05 09 25.9645434784 +05 41 35.333636817 15.32 14.95 14.78 15.12   ~ 266 2
2 M 87 BiC 12 30 49.42338230 +12 23 28.0438581 10.16 9.59 8.63   7.49 ~ 6383 3
3 NAME Boomerang Nebula pA* 12 44 46.0900155125 -54 31 13.356991600       13.06   ~ 51 0
4 NAME Centaurus A Sy2 13 25 27.61509104 -43 01 08.8056025   8.18 6.84 6.66   ~ 4087 3
5 4C 11.69 QSO 22 32 36.40890517 +11 43 50.9040717   17.75 17.33     ~ 1007 2

    Equat.    Gal    SGal    Ecl

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2021.04.15-06:36:33

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