Optical-UV Observations of OJ 287

Details Optical-UV Observations of OJ 287 Optical-UV Observations of OJ 287

Dec 1996

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996aas...189.9904h&link_type=abstract

American Astronomical Society, 189th AAS Meeting, #99.04; Bulletin of the American Astronomical Society, Vol. 28, p.1407

Astronomy and Astrophysics

Astronomy

Scientific paper

The Blazar OJ 287 underwent and energenic optical outburst in late 1994. In reponse to this outburst we intiated a Target of Opportunity (TOO) program which utilizes several observatories, including the INTERNATIONAL ULTRAVIOLET EXPLORER (IUE) satellite, to make multifrequency observations spanning much of the electromagnetic spectrum during the outburst. These observations are combined in order to study the multifrequnecy variability of OJ 287. This paper reports on the UV-Optical data obtained during this outburst. We found that the the spectral slope in the UV was steeper than in the optical by a factor of two. The slopes were variable in both spectral bands. We suggest that the strong curvature in the optical-UV spectrum implies that this region is very complicated, containing a number of spectral components from the jet. It is possible that the synchrotron break freqency for at least one of the components is located the near UV.

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