Submillimeter,Near-Infrared and Optical Light Curves of Gamma-Ray Blazars

Astronomy and Astrophysics – Astronomy

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Scientific paper

We have monitored 230 GHz (1.3 mm) continuum fluxes of 21 blazars on the Fermi LAT Monitored Source List using the Sumillimeter Array. We will correlate the SMA light curves with the gamma ray light curves from Fermi LAT to derive time delays between flares at the different bands and to compare the relative amplitudes of the flares. The science goal is to clarify how and where relativistic charged particles emit synchrotron radiation and also act as scatterers of low energy (submm-far-infrared) photons up to gamma ray energies. Most of the Fermi LAT Monitored Sources are SMA calibrators; by observing roughly every two to three weeks, we have obtained well sampled SMA light curves. In addition, we present optical and near-infrared photometry for several blazars, obtained in 2009 at Palomar Observatory's 60-inch telescope. We also present optical polarization data obtained at Pomona College's 1-meter telescope using a new polarimeter.

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