A turned-over optical spectrum of OJ287 during the 1989 minimum

Details A turned-over optical spectrum of OJ287 during the 1989 minimum A turned-over optical spectrum of OJ287 during the 1989 minimum

Dec 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991a%26a...252..538k&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 252, no. 2, Dec. 1991, p. 538-540.

Astronomy and Astrophysics

Astronomy

10

Bl Lacertae Objects, Cyclotron Radiation, Radiant Flux Density, Synchrotron Radiation, Visible Spectrum, Accretion Disks, Continuous Radiation, Radio Sources (Astronomy)

Scientific paper

Optical and radio data from the 1989 minimum are analyzed to examine the implications of the light curves for the spectrum. The optical spectrum increases between maximum and minimum with a sharp peak in the continuum, and a normal shape is noted at the minimum. The data are suggestive of a self-absorbed synchrotron component in the accretion disk which corresponds however, to strong magnetic fields and small regions of emission.

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