Christopher S. Diltz - Ohio University

Christopher S. Diltz
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Name
Christopher S. Diltz
Affiliation
Ohio University
City
Tempe
Country
United States

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High Energy Astrophysical Phenomena (3)

Publications Authored By Christopher S. Diltz

2016May
Affiliations: 1Ohio University, 2North-West University / Ohio University

In this study, we use a one-zone leptonic and a lepto-hadronic model to investigate the multi-wavelength emission and the prominent flare of the flat spectrum radio quasar 3C 454.3 in Nov 2010. We perform a parameter study with both models to obtain broadband fits to the spectral energy distribution of 3C 454. Read More

2015Feb
Affiliations: 1Ohio University, Athens, OH, 2North-West University, Potchefstroom, South Africa, 3Rice University, Houston, TX

We introduce a new time-dependent lepto-hadronic model for blazar emission that takes into account the radiation emitted by secondary particles, such as pions and muons, from photo hadronic interactions. Starting from a baseline parameter set guided by a fit to the spectral energy distribution of the blazar 3C 279, we perform a parameter study to investigate the effects of perturbations of the input parameters to mimic different flaring events to study the resulting lightcurves in the optical, X-ray, high energy (HE: E > 100 MeV) and very-high-energy (VHE: E > 100 GeV) gamma-rays as well as the neutrino emission associated with charged-pion and muon decay. We find that flaring events from an increase in the efficiency of Fermi II acceleration will produce a positive correlation between all bandpasses and a marked plateau in the HE gamma-ray lightcurve. Read More

In this paper, we discuss the light-curve features of various flaring scenarios in a time-dependent leptonic model for low-frequency-peaked blazars. The quasar 3C273 is used as an illustrative example. Our code takes into account Fermi-II acceleration and all relevant electron cooling terms, including the external radiation fields generally found to be important in the modeling of the SEDs of FSRQs, as well as synchrotron self absorption and gamma-gamma pair-production. Read More