Herschel Observations of Blazars PKS 1510-089 and AO 0235+164

We present the results of the Herschel Space Observatory observations of two blazars - PKS 1510-089 and AO 0235+164. Observations were performed in 2011 and 2012, involving two photometric instruments - PACS and SPIRE, covering the wavelength range of 70-500 μm. Each source was observed quasi-simultaneously with both instruments over 10 epochs. We were able to constrain the spectral peaks of the synchrotron components for both sources. We detected little spectral variability in the far-IR band for either source. For PKS 1510-089, we collected multiwavelength data from Fermi LAT, Swift XRT and UVOT, SMARTS and SMA. Multiwavelength variability characteristics and the results of the SED modeling indicate that two separate emitting regions, located at different distances in the relativistic jet, contribute to the observed emission.