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arXiv · 2107.02702

Spectral Modeling of Flares in Long Term Gamma-Ray Light Curve of PKS 0903-57

Sandeep Kumar Mondal·Raj Prince·Nayantara Gupta·Avik Kumar Das
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Abstract

A detailed study of the BL Lacertae PKS 0903-57 has been done for the first time with 12 years of Fermi Large Area Telescope data. We have identified two bright gamma-ray flares in 2018 and 2020. Many sub-structures were observed during multiple time binning of these flares. We have performed detailed temporal and spectral study on all the sub-structures separately. A single-zone emission model is used for time-dependent leptonic modeling of the multi-wavelength spectral energy distributions. Our estimated values of variability time scale, magnetic field in the emission region, jet power obtained from leptonic modeling of PKS 0903-57 are presented in this work. Currently, we have a minimal number of observations in X-rays and other bands. Hence, more simultaneous multi-wavelength monitoring of this source is required to have a better understanding of the physical processes happening in the jet of the blazar PKS 0903-57.

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Sandeep Kumar Mondal, Raj Prince, Nayantara Gupta, Avik Kumar Das. 2021-07-06. Spectral Modeling of Flares in Long Term Gamma-Ray Light Curve of PKS 0903-57. https://doi.org/10.3847/1538-4357/ac11fa

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