Multiwavelength Spectral Studies Of Fermi-LAT Blazars

TL;DR

This study analyzes the multiwavelength spectra of two Fermi-LAT blazars, OJ 287 and 3C 279, using observational data and a time-dependent jet model to understand their emission mechanisms.

Contribution

It introduces a detailed, multi-slice leptonic jet model incorporating radiation feedback and internal shocks, guided by VLBA data, to simulate blazar SEDs.

Findings

Successful modeling of blazar SEDs with the jet model.

Insights into the interplay of synchrotron and inverse Compton processes.

Identification of key jet parameters influencing emission.

Abstract

We present multiwavelength spectral analyses of two Fermi-LAT blazars, OJ 287 and 3C 279, that are part of the Boston University multiwaveband polarization program. The data have been compiled from observations with Fermi, RXTE, the VLBA, and various ground-based optical and radio telescopes. We simulate the dynamic spectral energy distributions (SEDs) within the framework of a multi-slice, time-dependent leptonic jet model for blazars, with radiation feedback, in the internal shock scenario. We use the physical jet parameters obtained from the VLBA monitoring to guide our modeling efforts. We discuss the role of intrinsic parameters and the interplay between synchrotron and inverse Compton radiation processes responsible for producing the resultant SEDs.