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- W2738876343 abstract "We examine the long-term (∼ 10 years) γ-ray variability of blazars observed by EGRET and Fermi and find that 10 EGRET-detected flat spectrum radio quasars (FSRQs) were not present in any of the Fermi catalogue (during the first four years of Fermi observation). Six of these 10EGRET sources show possible Fermi counterparts based on overlap with error circles given in 3 r d Fermi catalogue. A seventh EGRET source is positionally consistent with a newly discovered Fermisource from our analysis. Unlike the high luminosity state exhibited during 1991 to 1995, our analysisusing seven years of Fermi data showed that five of these are at its low luminosity state in the GeV band. This result indicates that FSRQs exhibit a long-term quiescent state (more than 7 years). In addition, 37 new γ-ray sources are also detected during the course of this analysis. On the basis of AGN being the most dominant source class in γ-rays, many of these new sources could be associated with AGN and may exhibit long-term variabilities in γ-rays." @default.
- W2738876343 created "2017-07-31" @default.
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- W2738876343 date "2017-07-20" @default.
- W2738876343 modified "2023-10-18" @default.
- W2738876343 title "Unusual long-term low-activity states of EGRET blazars in the Fermi era" @default.
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- W2738876343 doi "https://doi.org/10.1093/mnras/stx1827" @default.
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