Bulletin of ANPA

Abstract submitted to ANPA Conference July 14–16, 2023

Volume 5, Number 1

High Energy, Particle, and Nuclear Physics

Abstract ID: ANPA2023-N00081

Abstract:

ANPA2023-N00081: Identification of a Soft X-ray Flaring Range in OJ 287 from April 2020 Observation through Temporal, Spectral, and SED Modeling Analysis

Authors:

• Rajendra Neupane; Central Department of Physics

• Niraj Dhital; Central Department of Physics, Kirtipur, Kathmandu, Nepal

We performed a temporal and spectral study of emission from blazar OJ 287 using an XMM-Newton observation in April 2020. Among the various fitted models used to characterize the spectrum, (log-parabola+black-body) model fits the spectrum best which indicates that the observed X-ray emission is a result of a combination of synchrotron and thermal emission processes, implying that the overall X-ray emission is driven by both non-thermal and thermal mechanisms. The value of fractional variability of 2.073±0.037 indicates that the source is highly variable. The results of our analysis show a significantly higher net count rate of 5.651±0.025. Despite the much shorter exposure time of just 9 ks in April 2020, compared to the 53 ks and 19 ks exposure time for the 2015 and 2018 observations respectively, the effect of the flare is still apparent in the higher net count rate (5.651±0.025) obtained from the more recent observations in April 2020.

To cite this abstract, use the following reference: https://anpaglobal.org/conference/2023/ANPA2023-N00081