Time History of 3C279 Gamma-Ray Emission in June of 1991
This plot shows highly variable gamma-ray emission from the gamma-ray blazar 3C279 over a two week period in June of 1991. The flux (number of gamma-ray photons per square centimeter per second) measured by EGRET at energies above 100 MeV is plotted for each day during this period. The vertical size of the symbols represents the uncertainty in each measurement. The flux levels are seen to change dramatically in just a few days. The time scales of these dramatic variations provide important constraints for theoretical models of the source of the gamma-ray emission.
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