The large number of observations made over a period of more than 3 yr have reduced
The 76-m Lovell telescope at Jodrell Bank. We report flux density measurements of pulsars made at radio frequencies centred around 408, 606, 925, 14 MHz using Γ-ray variations is as predicted by the SSC model and can beĪccommodated within the ECS model if the flare is caused by a temporaryĬhange in the bulk Lorentz factor of the γ-ray-emitting plasma. Either model canįit the observed spectra satisfactorily. Synchrotron-emitting relativistic electrons in the jet. Photons originating external to the jet (ECS) by the Overall multi-wave band spectrum averaged over the 1991 June flareĬorresponding to two models: (i) synchrotron self-Compton (SSC) emissionįrom a relativistic jet and (ii) inverse Compton scattering of seed The variability shows higher relative amplitude The optical R-band that peaks within ~1 day of the maximum in the Variability between the γ-rays and lower frequencies is a flare in Temporal coverage is incomplete, the only evidence for correlation in Submillimeter, infrared, optical, and γ-rays. LightĬurves from early 1991 to mid-1992 are presented for radio, millimeter, A much less complete spectrum is presented for 1991 October. Near the time of the 3C 279 γ-ray flare observed by EGRET in 1991 Data from a number of monitoring programs have been combined with dataįrom the Compton Gamma Ray Observatory and the Ginga X-ray satellite toĬonstruct a spectrum covering nearly 15 decades in frequency during or
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