Volume 576, April 2015
|Number of page(s)||6|
|Published online||13 March 2015|
A search for chaos in the optical light curve of a blazar: W2R 1926+42
1 Institute of Astronomy with NAO, Bulgarian Academy of Sciences, 1784 Sofia, Bulgaria
2 Department of Physics, Indian Institute of Science, 560012 Bangalore, India
Received: 20 December 2014
Accepted: 5 January 2015
Aims. In this work we search for the signatures of low-dimensional chaos in the temporal behavior of the Kepler-field blazar W2R 1946+42.
Methods. We use a publicly available, ~160 000-point-long and mostly equally spaced light curve of W2R 1946+42. We apply the correlation integral method to both real datasets and phase randomized surrogates.
Results. We are not able to confirm the presence of low-dimensional chaos in the light curve. This result, however, still leads to some important implications for blazar emission mechanisms, which are discussed.
Key words: chaos / BL Lacertae objects: general / BL Lacertae objects: individual: W2R 1946+42
© ESO, 2015
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