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arXiv · 1706.02133

Long term study of the light curve of PKS 1510-089 in GeV energies

Raj Prince·Pratik Majumdar·Nayantara Gupta
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Abstract

We have analyzed data from the Flat Spectrum Radio Quasar PKS 1510-089 collected over a period of 8 years from August 2008 to December 2016 with the Fermi-LAT. We have identified several flares of this highly variable source, studied their temporal and spectral properties in detail and compared with previous works on flares of PKS 1510-089. Five major flares and few sub-flares/sub-structures have been identified in our study. The fastest variability time is found to be 1.30$\pm$0.18 hr between MJD 55852.063 and 55852.188 where we estimate the minimum size of the emission region to be $4.85 \times 10^{15}$ cm. In most of the flares the spectral energy distributions are better fitted with Logparabolic distribution compared to simple Power law or Power law with exponential cut-offs. This has strong physics implications regarding the nature of the high energy gamma-ray emission region.

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Raj Prince, Pratik Majumdar, Nayantara Gupta. 2017-06-07. Long term study of the light curve of PKS 1510-089 in GeV energies. https://doi.org/10.3847/1538-4357%2Faa78f4

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