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Optical and infrared photometry of the blazar PKS0537-441

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arxiv 1011.1100 v1 pith:AIIHWFOI submitted 2010-11-04 astro-ph.HE

Optical and infrared photometry of the blazar PKS0537-441

D. Impiombato , S. Covino , A. Treves , L. Foschini , E. Pian , G. Tosti , D. Fugazza , L. Nicastro
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S. Ciprini
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keywords blazardurationamplitudeapparentbandbandscollectioncomponent
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We present a large collection of photometric data on the Blazar PKS 0537-441 in the VRIJHK bands taken in 2004-2009. At least three flare-like episodes with months duration, and >3 mag amplitude are apparent. The spectral energy distribution is consistent with a power law, and no indication of a thermal component is found. We searched for short time scale variability, and an interesting event was identified in the J band, with a duration of ~25 minutes.

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