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The violent hard X-ray variability of Mrk 421 observed by NuSTAR in 2013 April
(American Astronomical Society, 2015)
The well-studied blazar Markarian 421 (Mrk 421, z = 0.031) was the subject of an intensive multi-wavelength campaign when it flared in 2013 April. The recorded X-ray and very high-energy (E > 100 GeV) γ-ray fluxes are the ...
Particle diffusion and localized acceleration in inhomogeneous AGN jets. I. Steady-state spectra
(Oxford University Press, 2015)
We study the acceleration, transport, and emission of particles in relativistic jets. Localized stochastic particle acceleration, spatial diffusion, and synchrotron as well as synchrotron self-Compton (SSC) emission are ...
Probing cluster environments of blazars through γγ absorption
(EDP Sciences, 2015)
Most blazars are known to be hosted in giant elliptic galaxies, but their cluster environments have not been thoroughly investigated. Cluster environments may contain radiation fields of low-energy photons created by nearby ...
Hadronic models of blazars require a change of the accretion paradigm
(Oxford University Press, 2015)
We study hadronic models of broad-band emission of jets in radio-loud active galactic nuclei, and their implications for the accretion in those sources. We show that the models that account for broad-band spectra of blazars ...
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 ...
High-energy emission from Black Widows and Redbacks
(Sissa Medialab, 2015)
A large number of new black widow and redback energetic millisecond pulsars with irradiated
stellar companions have been discovered through radio searches of unidentified Fermi sources.
We construct a 3D emission model ...
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 ...