PKS 2052-47 shows a ~600-630 day gamma-ray quasi-periodic oscillation, consistent with earlier work, plus a tentative ~1050-1110 day secondary feature, both exceeding local significance thresholds against red-noise models.
Extragalactic Jets from the TANAMI Sample as Seen by Fermi/LAT
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The TANAMI program has been monitoring the parsec-scale radio jets of southern gamma-ray bright AGN with VLBI techniques simultaneously with Fermi/LAT monitoring of their gamma-ray emission. Here we present the gamma-ray properties of the TANAMI sources based on an analysis of the preliminary 1-year LAT source list. We present upper limits on the gamma-ray flux for TANAMI sources not detected by LAT.
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A multi-technique search for year-scale $\gamma$-ray quasi-periodic modulation in the high-redshift FSRQ PKS~2052$-$47
PKS 2052-47 shows a ~600-630 day gamma-ray quasi-periodic oscillation, consistent with earlier work, plus a tentative ~1050-1110 day secondary feature, both exceeding local significance thresholds against red-noise models.