2018MNRAS.474.1296B

Query : 2018MNRAS.474.1296B

2018MNRAS.474.1296B - Mon. Not. R. Astron. Soc., 474, 1296-1306 (2018)

RoboPol: connection between optical polarization plane rotations and gamma-ray flares in blazars.

BLINOV D., PAVLIDOU V., PAPADAKIS I., KIEHLMANN S., LIODAKIS I., PANOPOULOU G.V., ANGELAKIS E., BALOKOVIC M., HOVATTA T., KING O.G., KUS A., KYLAFIS N., MAHABAL A., MAHARANA S., MYSERLIS I., PALEOLOGOU E., PAPAMASTORAKIS I., PAZDERSKI E., PEARSON T.J., RAMAPRAKASH A., READHEAD A.C.S., REIG P., TASSIS K. and ZENSUS J.A.

Abstract (from CDS):

We use results of our 3 yr polarimetric monitoring programme to investigate the previously suggested connection between rotations of the polarization plane in the optical emission of blazars and their gamma-ray flares in the GeV band. The homogeneous set of 40 rotation events in 24 sources detected by RoboPol is analysed together with the gamma-ray data provided by Fermi-LAT. We confirm that polarization plane rotations are indeed related to the closest gamma-ray flares in blazars and the time lags between these events are consistent with zero. Amplitudes of the rotations are anticorrelated with amplitudes of the gamma-ray flares. This is presumably caused by higher relativistic boosting (higher Doppler factors) in blazars that exhibit smaller amplitude polarization plane rotations. Moreover, the time-scales of rotations and flares are marginally correlated.

Abstract Copyright: © 2017 The Author(s) Published by Oxford University Press on behalf of the Royal Astronomical Society

Journal keyword(s): polarization - galaxies: active - galaxies: jets - galaxies: nuclei - gamma-rays: galaxies

Simbad objects: 6

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Number of rows : 6
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 QSO J1512-0906 Bla 15 12 50.53293048 -09 05 59.8297908   16.74 16.54     ~ 1409 1
2 1RXS J180043.6+782806 BLL 18 00 45.6838528560 +78 28 04.018028016   16.4 15.90 16.134   ~ 793 1
3 Z 340-35 BLL 18 06 50.6802916920 +69 49 28.109609256   14.77 14.22 11.39   ~ 909 1
4 RX J1809.4+2041 BLL 18 09 25.4519567448 +20 41 30.904155564           ~ 47 0
5 2MASS J18362123+3136268 BLL 18 36 21.2402805936 +31 36 26.730232848           ~ 55 1
6 6C 192647+611105 BLL 19 27 30.4428785736 +61 17 32.878880988   17.5 17.5 16.99   ~ 139 1

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