Bibcode
Dultzin-Hacyan, D.; Takalo, L. O.; Benítez, E.; Sillanpää, A.; Pursimo, T.; Lehto, H.; de Diego, J. A.
Bibliographical reference
Revista Mexicana de Astronomia y Astrofisica, 33, p. 17-23 (1997)
Advertised on:
4
1997
Citations
9
Refereed citations
8
Description
We present microvariability observations of OJ 287, taken during a small
flare in January 1994. We can follow the behaviour of OJ 287 during the
whole flare. The event has a synchrotron flare shape, with a steep
ingress and slower egress, and a double peak structure most likely due
to two similar flares occurring a day apart. Microvariability is
observed on top of this flare during at least six nights, out of ten.
Two types of microvariability events can be identified: small flares and
smooth sinusoidal variations. The time scales are of the order of
minutes to hours. We do not find any periodic or quasi-periodic
variations. A brief discussion on the possible mechanisms responsible
for the different scales and types of variability is given.