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MAGIC, a stereoscopic cherenkov telescope array, sensitive to gamma-raysbetween 50 GeV and several tens of TeV, is ideally suited to observe promisingFermi LAT sources with a hard \gamma-ray spectrum. Here we discuss thediscovery of very high energy gamma-ray (VHE, E > 100 GeV) emission from theFermi LAT sources 1FGL J2001.1+4351 and B3-2247+381 with MAGIC. 1FGLJ2001.1+4351, recently identified as MG4 J200112+4352 (Bassani et al. 2010), ismost likely a high peaked BL Lacertae object. The red shift of this source isstill unknown, though the identification of the optical host galaxy suggests z< 0.2. MAGIC observations indicate short term variability, since the sourceshowed a strong emission of 20% of the Crab Nebula flux above 90 GeV during the16th of July 2010 and none of the other observation nights yielded a detection.B3-2247+381 is classified as a BL Lac object at z = 0.1187 (Veron-Cetty & Veroncatalogue of known AGN). In July 2010 it showed increased optical activity inthe Tuorla blazar monitoring program, which subsequently activated target ofopportunity observations by MAGIC. Within 18 hours of observation time extendedover 13 days between September and October 2010, a strong signal was foundabove an energy threshold of 150 GeV. The flux (4% of the Crab Nebula) isconsistent with being constant over the entire observation campaign. We computethe light curves, model the spectral energy distributions of these new veryhigh energy gamma-ray emitters and discuss the physical properties of the VHEgamma-ray emission region.

Exploring the very high energy gamma-ray emission (E > 100 GeV) of the hard spectrum Fermi sources 1FGL J2001.1+4351 and B3-2247+381 with MAGIC