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- W33229089 abstract "3C 66A is an intermediate-frequency peaked BL Lacertae object of uncertain redshift. We report recent observations of the region around the blazar with the MAGIC telescopes. The source was observed and detected in 2009 December and 2010 January, in 2.3 h of good quality data. The signal could clearly be assigned to the blazar 3C 66A, statistically and systematically rejecting the nearby radio galaxy 3C 66B as a possible origin of the gamma-ray signal by 3.6 standard deviations. The derived integral flux above 100GeV is 8.3% of the Crab Nebula flux, and the energy spectrum is reproduced by a power law of photon index 3.64 pm 0.39(stat.) pm 0.25(sys.). Within the errors, this is compatible with the spectrum derived by VERITAS in 2009. From the spectra corrected for absorption by the extragalactic background light, we only find small differences between the four modellings that we applied, and constrain the redshift of the blazar to z < 0.68." @default.
- W33229089 created "2016-06-24" @default.
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- W33229089 date "2011-09-29" @default.
- W33229089 modified "2023-09-25" @default.
- W33229089 title "Stereoscopic Observations of the Blazar 3C 66A with the MAGIC Telescopes" @default.
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- W33229089 hasPublicationYear "2011" @default.
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