Fits to the spectra of broad-line region of active galactic nuclei and opacities for two-photon pair production

M. Ntshatsha, S. Razzaque, R. J. Britto

Research output: Contribution to journalConference articlepeer-review

Abstract

Based on the spectral analysis of a composite Hubble Space Telescope (HST) spectrum made of 184 quasar data, we model the emission lines of the broad-line region (BLR) using analytic functions. For simplicity of this paper we neglect effects of the continuum emission, which may be resulting from emission by the accretion disk, and assume the emission of the BLR to be composed of the most prominent emission lines that form as a result of ionization and recombination processes within regions of the BLR. We also calculate opacities for gamma-rays propagating in the BLR and interacting with the modeled emission to produce electron-positron (e±) pairs.

Original languageEnglish
JournalProceedings of Science
Volume338
Publication statusPublished - 2018
Event6th High Energy Astrophysics in Southern Africa, HEASA 2018 - Parys, Free State, South Africa
Duration: 1 Aug 20183 Aug 2018

ASJC Scopus subject areas

  • Multidisciplinary

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