Search for rapid optical light-curve variability of BL Lac objects

Details Search for rapid optical light-curve variability of BL Lac objects Search for rapid optical light-curve variability of BL Lac objects

Feb 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987pazh...13...88a&link_type=abstract

Pis'ma v Astronomicheskii Zhurnal (ISSN 0320-0108), vol. 13, Feb. 1987, p. 88-94. In Russian. In Russian. In Russian.

Mathematics

Probability

2

Astronomical Photometry, Bl Lacertae Objects, Light Curve, Periodic Variations, Fourier Analysis, Power Spectra

Scientific paper

The 2-m reflector of the Shemakha Astrophysical Observatory was used to search for the rapid light-curve variability of BL Lac objects in B and V filters and in white light. The observational results were subjected to a Fourier analysis. A chaotic light-curve variability was detected with characteristic time-scales of several minutes to several tens of minutes with amplitudes of about 0.1 min. The power spectrum analysis revealed a periodic component of the variability with a period of 27 min, an amplitude in the 0.02-0.03 min range, and a chance-occurrence probability of 0.00002.

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