Analysis of the Spectral Energy Distributions of Fermi bright blazars

Blazars are a small fraction of all extragalactic sources but, unlike other objects, they are strong emitters across the entire electromagnetic spectrum. In this study we have conducted a detailed investigation of the broad‐band spectral properties of the gamma‐ray selected blazars of the Fermi LAT Bright AGN Sample (LBAS). By combiningthe accurately estimated Fermi gamma‐ray spectra with Swift, radio, NIR‐Optical and hard‐X/gamma‐ray data, collected within three months of the LBAS data taking period, we were able to assemble high‐quality and quasi‐simultaneous Spectral Energy Distributions (SED) for 48 LBAS blazars. Here we show the procedure for the multi wavelength analysis.