Intraday variability of BL Lacertae in the great 1997 outburst

Details Intraday variability of BL Lacertae in the great 1997 outburst Intraday variability of BL Lacertae in the great 1997 outburst

Apr 1998

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998a%26a...332l...1n&link_type=abstract

Astronomy and Astrophysics, v.332, p.L1-L4 (1998)

Astronomy and Astrophysics

Astrophysics

41

Bl Lacertae Objects: General, Bl Lacertae Objects: Individual: Bl Lac

Scientific paper

We report intranight observations performed during the Summer 1997 outburst of BL Lac, in the B, V, R_c and I_c bands. The source was never found to be stable, but always showed a variability of at least 0.04 mag/hour, often with superimposed fast fluctuations on time scales of about an hour and with amplitudes of about 0.1 mag. The amplitude of the flux variations was always larger at shorter wavelengths. No time lag between different bands could be unambiguously detected.

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