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High-temporal resolution optical observations of the gamma-ray blazar PG 1553+113

Published online by Cambridge University Press:  24 February 2011

I. Andruchow ,
J. A. Combi ,
S. A. Cellone ,
A. J. Muñoz-Arjonilla ,
G. E. Romero  and
J. Martí
I. Andruchow
Affiliation:
Facultad de Ciencias Astronómicas y Geofísicas, Universidad Nacional de La Plata, Paseo del Bosque, B1900FWA La Plata, Argentina IALP, CONICET-UNLP, CCT La Plata, Paseo del Bosque, B1900FWA La Plata, Argentina
J. A. Combi
Affiliation:
IAR, CONICET, CCT La Plata, C.C. No. 5 (1894) Villa Elisa, Buenos Aires, Argentina
S. A. Cellone
Affiliation:
Facultad de Ciencias Astronómicas y Geofísicas, Universidad Nacional de La Plata, Paseo del Bosque, B1900FWA La Plata, Argentina IALP, CONICET-UNLP, CCT La Plata, Paseo del Bosque, B1900FWA La Plata, Argentina
A. J. Muñoz-Arjonilla
Affiliation:
Departamento de Física (EPS), Universidad de Jaén, Campus Las Lagunillas s/n, A3, 23071 Jaén, Spain
G. E. Romero
Affiliation:
Facultad de Ciencias Astronómicas y Geofísicas, Universidad Nacional de La Plata, Paseo del Bosque, B1900FWA La Plata, Argentina IAR, CONICET, CCT La Plata, C.C. No. 5 (1894) Villa Elisa, Buenos Aires, Argentina
J. Martí
Affiliation:
Departamento de Física (EPS), Universidad de Jaén, Campus Las Lagunillas s/n, A3, 23071 Jaén, Spain
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Abstract

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We present here the results of an observational photo-polarimetry campaign at optical wavelengths of the blazar PG 1553+113, which was recently detected at very high energies (>100 GeV) by the H.E.S.S and MAGIC γ-ray experiments.

Our high-temporal resolution data show significant variations in the linear polarization percentage and position angle at inter-night time-scales, while at shorter (intra-night) time-scales both parameters varied less significantly, if at all. Simultaneous differential photometry (at the B and R bands) shows no significant variability in the total optical flux.

Keywords

techniques: photometric - polarimetricBL Lacertae objects: individual (PG 1553+113)
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 6 , Symposium S275: Jets at all Scales , September 2010 , pp. 190 - 191
Copyright
Copyright © International Astronomical Union 2011

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