Microvariability of OJ 287 during a Flare

Details Microvariability of OJ 287 during a Flare Microvariability of OJ 287 during a Flare

Apr 1997

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997rmxaa..33...17d&link_type=abstract

Revista Mexicana de Astronomia y Astrofisica, 33, p. 17-23 (1997)

Astronomy and Astrophysics

Astronomy

6

Scientific paper

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.

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