Abstract

We report on VERITAS very-high-energy (VHE; E>100 GeV) observations of six blazars selected from the Fermi LAT 1FGL catalog. The gamma-ray emission from 1FGL sources was extrapolated up to the VHE band, while including gamma-ray absorption by the extragalactic background light. This enabled the selection of the six bright, hard-spectrum candidate TeV blazars RGB J0136+361, RGB J0316+090, RGB J0909+231, RGB J1058+564, RGB J1243+364 and RX J1436.9+5639. No VHE emission is detected during the VERITAS observations of the six sources.

VERITAS TeV upper limits are presented with the contemporaneous Fermi observations and non-concurrent Swift UVOT and XRT data. The blazar broadband emission is modeled with a single-zone synchrotron self-Compton model. The resulting spectral energy distribution for each of the six blazars shows a synchrotron peak bordering between the intermediate- and high-spectrum-peak classifications, while four of them exhibited particle-dominated emission regions.