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Radiation and polarization signatures of the 3D multizone time-dependent hadronic blazar model
(IOP Publishing, 2016)
We present a newly developed time-dependent three-dimensional multizone hadronic blazar emission model. By coupling a Fokker–Planck-based lepto-hadronic particle evolution code, 3DHad, with a polarization-dependent radiation ...
Synchrotron polarization in blazars
(IOP Publishing, 2014)
We present a detailed analysis of time- and energy-dependent synchrotron polarization signatures in a shock-in-jet model for γ-ray blazars. Our calculations employ a full three-dimensional radiation transfer code, assuming ...
Polarization swings reveal magnetic energy dissipation in blazars
(American Astronomical Society, 2015)
The polarization signatures of blazar emissions are known to be highly variable. In addition to small fluctuations of the polarization angle around a mean value, large (gsim180°) polarization angle swings are sometimes ...
Probing the emission mechanism and magnetic field of neutrino blazars with multiwavelength polarization signatures
(IOP Publishing, 2019)
The characteristic two-component blazar spectral energy distribution (SED) can be of either leptonic and/or hadronic origins. The potential association of the high-energy neutrino event IceCube-170922A with the flaring ...
Polarization signatures of relativistic magnetohydrodynamic shocks in the blazar emission region. I. Force-free helical magnetic fields
(IOP, 2016)
The optical radiation and polarization signatures in blazars are known to be highly variable during flaring activities. It is frequently argued that shocks are the main driver of the flaring events. However, the spectral ...
Magnetic field amplification and flat spectrum radio quasars
(Oxford University Press, 2014)
We perform time-dependent, spatially resolved simulations of blazar emission to evaluate
several flaring scenarios related to magnetic-field amplification and enhanced particle acceleration.
The code explicitly accounts ...
Multiwavelength polarization as a diagnostic of blazar physics
(Sissa Medialab, 2015)
The nature of the high-energy emission in jet-dominated AGN (especially blazars) as well as the
location and mode of acceleration of particles to ultra- relativistic energies are a matter of intensive debate. Both leptonic ...
Leptonic and hadronic modeling of Fermi-LAT hard spectrum quasars and predictions for high-energy polarization
(IOP Publishing, 2018)
We present the results of a study of the time-averaged spectral energy distributions (SEDs) of eight flat spectrum
radio quasars (FSRQs) present in the second catalog of high energy sources detected beyond 50 GeV by the ...