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- W1838681651 abstract "Very high energy gamma ray emission from the active galactic nucleus PG 1553+113 was observed during 2005 and 2006 by the MAGIC collaboration, for a total observation time of 18.8 hours. Here we present the results of follow up observations: more than 20 hours of good quality data collected by the MAGIC Telescope during the 2007 and 2008 campaigns. The obtained spectra are compared and combined with previous measurements, and corrected for absorption adopting different EBL models. Upper limits on the unknown source redshift are derived by assuming the absence of a break in the intrinsic spectrum, or alternatively by constraining the hardness of the intrinsic source spectrum." @default.
- W1838681651 created "2016-06-24" @default.
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- W1838681651 date "2009-07-01" @default.
- W1838681651 modified "2023-09-25" @default.
- W1838681651 title "A new upper limit on the redshift of PG 1553+113 from observations with the MAGIC Telescope" @default.
- W1838681651 hasPublicationYear "2009" @default.
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