Abstract Details

Name: Anilkumar Tolamatti
Affiliation: Bhabha Atomic Research Centre, Mumbai - 400085
Conference ID: ASI2021_203
Title : Multi-wavelength study of the optical flaring episode from high redshift blazar PKS 1502+106
Authors and Co-Authors : A Tolamatti ( Bhabha Atomic Research Centre, Mumbai-400085, India.), B Brandon (University of the Free State, Bloemfontein-9301, South Africa.), K K Singh ( Bhabha Atomic Research Centre, Mumbai-400085, India.), K K Yadav ( Bhabha Atomic Research Centre, Mumbai-400085, India.).
Abstract Type : Poster
Abstract Category : Extragalactic Astronomy
Abstract : High redshift (z > 1) blazars represent a small population of the most powerful sources in the Universe. Study of powerful emissions from such objects can help in understanding the cosmological evolution of blazars. In this work, we present the results from the multi-wavelength study of an optical dominated flaring episode observed from the blazar PKS 1502+106 (z = 1.8385). A long duration outburst in the V and R bands from this source was measured by the Steward Observatory in 2017. We use near simultaneous data from the Fermi-LAT, Swift-XRT, Swift-UVOT and OVRO-15GHz observations to explore the properties of broadband emission during the optical flaring activity of the blazar PKS 1502+106. The Swift-UVOT data show coincidence with the observations from the Steward Observatory during the outburst, whereas emissions in other wavebands indicate relatively low activity state of the source. The broadband spectral energy distribution of the source during this epoch can be broadly reproduced by a simple one zone leptonic synchrotron and external Compton model. Details of the characteristics of multi-wavelength light curves and modeling of time averaged broadband emissions will be discussed in the presentation.