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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 ...
Particle diffusion and localized acceleration in inhomogeneous AGN jets. II. Stochastic variation
(Oxford Univ Press, 2016)
We study the stochastic variation of blazar emission under a 2D spatially resolved leptonic jet model we previously developed. Random events of particle acceleration and injection in small zones within the emission region ...
Leptonic and lepto-hadronic modeling of the 2010 November flare from 3C 454.3
(AAS, 2016)
In this study, we use a one-zone leptonic and a lepto-hadronic model to investigate the multi-wavelength emission and prominent flare of the flat spectrum radio quasar 3C 454.3 in 2010 November. We perform a parameter study ...
Relativistic shear flow between electron-ion and electron-positron plasmas and astrophysical applications
(IOP, 2017)
We present particle-in-cell simulation results of relativistic shear boundary layers between electron–ion and
electron–positron plasmas and discuss their potential applications to astrophysics. Specifically, we find that ...
3C 279 in outburst in 2015 june: a broadband sed study based on the integral detection
(IOP Publishing, 2016)
Blazars radiate from radio through gamma-ray frequencies and thereby make ideal targets for multifrequency studies. Such studies allow the properties of the emitting jet to be constrained. 3C 279 is among the most notable ...
Very-high-energy gamma-ray emission from the direction of the Galactic globular cluster Terzan 5
(EDP Sciences, 2011)
The HESS very-high-energy (VHE, E > 0.1 TeV) gamma-ray telescope system has discovered a new source, HESS J1747-248. The measured integral flux is (1.2 ± 0.3) × 10-12 cm-2 s-1 above 440 GeV for a power-law photon 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 ...
Identifying the brightest Galactic globular clusters for future observations by H.E.S.S. and CTA
(Oxford Univ Press, 2018)
We present results from an emission code that assumes millisecond pulsars to be sources
of relativistic particles in globular clusters (GCs) and models the resulting spectral energy
distribution of Galactic GCs due to ...
A numerical model of parsec-scale SSC morphologies and their radio emission
(AAS, 2016)
In current models for jets of active galactic nuclei and their emission a shortcoming in the description and understanding of the connection between the largest and smallest scales exists. In this work we present a spatially ...
Radio observations of the region around the pulsar wind nebula HESSJ1303-631 with ATCA
(EDP Sciences, 2017)
Radio observations of the region surrounding PSR J1301−6305 at 5.5 GHz and 7.5 GHz were conducted with ATCA on September 5, 2013. The observations were dedicated to the search of the radio counterpart of the evolved pulsar ...