Possible Quasi-Periodic Gamma-ray Emission from Blazar PG 1553+113

Journal
Date Issued
2017
Author(s)
Thompson, David
•
Cutini, Sara
•
Ciprini, Stefano
•
Larsson, Stefan
•
•
Fermi Large Area Telescope Collaboration
Abstract
We report an update on a possible gamma-ray and multiwavelength nearly periodic oscillation in an active galactic nucleus. Data from the Fermi Large Area Telescope exhibit an apparent quasi-periodicity in the gamma-ray flux (E > 100 MeV) from the GeV/TeV BL Lac object PG 1553+113. The indication of a 2.18 +/- 0.08 year period gamma-ray cycle is strengthened by correlated oscillations observed in radio and optical fluxes, through data collected in the Owens Valley Radio Observatory, Tuorla, Katzman Automatic Imaging Telescope, and Catalina Sky Survey monitoring programs and Swift-UVOT. Further long-term multiwavelength monitoring of this blazar may discriminate among the possible explanations for this quasi-periodicity.
Coverage
APS April Meeting Abstracts
Volume
2017
Start page
S4.004
Conferenece
APS April Meeting 2017
Conferenece place
Washington, D.C.
Conferenece date
28-31 January, 2017
Uri
Url
Issn Identifier
0003-0503
Ads BibCode
2017APS..APR.S4004T
Rights
open.access
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