Two multifrequency observations of the BL Lacertae object OJ 287

D. M. Worrall, J. J. Puschell, B. Jones, F. C. Bruhweiler, M. F. Aller, H. D. Aller, P. E. Hodge, M. L. Sitko, W. A. Stein, Y. X. Zhang, W. H.-M. Ku

Research output: Contribution to journalArticle (Academic Journal)peer-review


Results are reported for various sets of X-ray, UV, visual, IR, millimeter, and radio observations of OJ 287. The spectral information is used to constrain nonthermal energy production models for the source, and three possible models are considered. It is found that, in order to describe all the observed flux in the radio to X-ray bands with a synchrotron self-Compton model, a high degree of relativistic beaming is required such that the equivalent Doppler factor ranges from about 20 to 165. It is concluded that submillimeter flux and X-ray spectral measurements could distinguish between the two possible models that fit the present observations.
Original languageEnglish
Pages (from-to)403-411
JournalAstrophysical Journal
Publication statusPublished - 1 Oct 1982


  • Bl Lacertae Objects
  • Radio Sources (Astronomy)
  • Ultraviolet Astronomy
  • Astronomical Models
  • Iue
  • Light Curve
  • Millimeter Waves
  • Relativistic Effects
  • X Ray Spectra


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