Title: The Possibility for The Detection of the Sub-TeV Gamma-Ray Emission from Fermi Blazars
Abstract: Measurements of the very high energy (VHE) gamma-ray flux from high-redshift blazars are useful for understanding the cosmological evolution of galaxies, because gamma-ray emission from distant blazars is affected by extragalactic background light (EBL).We searched for detectable VHE gamma-ray blazars with known redshifts using the Fermi archive data and selected three high-redshift sources, PKS 0118-272, PKS0454-234, and PKS 1244-255.In addition, we investigated the possibility of detecting VHE gamma-ray emission from two new flaring HE gamma-ray sources that were not included in the Second Fermi LAT Catalog (2FGL).Compared with the sensitivity of H.E.S.S., MAGIC, and CTA, the VHE gamma-ray flux of these sources is difficult to detect using existing ground-based Cherenkov telescopes (H.E.S.S. and MAGIC), but PKS 0118-272 could be detected constantly with a next-generation ground-based telescope (CTA), and PKS 0454-234 could be detected by CTA when the target object is in the bright period.Unfortunately, PKS 1244-255 is difficult to detect by CTA.Two new flaring HE gamma-ray sources J1418+3542 and J1628+7707 are judged to be detectable with MAGIC and CTA during the active period of the HE gamma rays if the redshifts are z < 0.5 and z < 1.0, respectively.