SIMBAD references

F. Goebel, Max-Planck-Institut fuer Physik, Munich, on behalf of the MAGIC collaboration, writes that the 'Imaging Air Cherenkov' telescope MAGIC at La Palma has observed a gamma-ray flare of the BL Lac-type active galactic nucleus Markarian 501 during June 30.907-30.950 UT. The measured integrated flux above 200 GeV corresponds to approximately 3-4 times the Crab flux. The observed energy spectrum extends up to 5 TeV and above. Follow-up observations around July 3.92 and 6.92 yielded lower flux levels of about 1 and 0.5 Crab units, respectively. Further observations are scheduled (see http://magic.mppmu.mpg.de/physics/mkn501flare05/), and simultaneous observations at other wavelengths are encouraged.