Multiwavelength data for blazars 3C 279 & 3C 454.3

We have attempted to address this problem following a novel spectral energy distribution (SED) fitting technique that explored the flaring patterns identified in the broadband SEDs of two {gamma}-ray bright blazars, 3C 279 (z=0.54) and 3C 454.3 (z=0.86), using near-simultaneous radio-to-{gamma}-ray observations. For both sources, the {gamma}-ray flux strongly correlates with the separation of the SED peaks and the Compton dominance.

We propose that spectral hardening of the radiating electron population and/or enhancement of the Doppler factor can naturally explain these observations. In both cases, magnetic reconnection may play a pivotal role in powering the luminous {gamma}-ray flares.