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We describe a geometric model for synchrotron and synchrotron self-Compton (SSC) radiation from blazar jets, involving multiple emission zones with turbulent magnetic fields and fully self-consistent seed photon mixing for SSC. Including…

High Energy Astrophysical Phenomena · Physics 2020-01-08 A. L. Peirson , R. W. Romani

Jet models for the high-energy emission of Galactic X-ray binary sources have regained significant interest with detailed spectral and timing studies of the X-ray emission from microquasars, the recent detection by the HESS collaboration of…

Astrophysics · Physics 2009-11-11 Swati Gupta , Markus Boettcher , Charles D. Dermer

We developed theory of particle acceleration inside the relativistic rotating electron-positron force-free jet with spiral magnetic field. We considered perturbation of stationary magnetic field structure and found that acceleration takes…

Astrophysics · Physics 2007-05-23 A. R. Beresnyak , Ya. N. Istomin , V. I. Pariev

Estimates of magnetic field strength in relativistic jets of active galactic nuclei (AGN), obtained by measuring the frequency-dependent radio core location, imply that the total magnetic fluxes in those jets are consistent with the…

High Energy Astrophysical Phenomena · Physics 2015-06-23 Krzysztof Nalewajko , Marek Sikora , Mitchell C. Begelman

The jets emanating from the centers of active galactic nuclei (AGN) are among the most energetic objects in the universe. Investigating how the morphology of the jet's synchrotron emission depends on the magnetic nature of the jet's…

High Energy Astrophysical Phenomena · Physics 2021-12-15 Joana A. Kramer , Nicholas R. MacDonald

Flattenings of nonthermal radiation spectra observed from knots and interknot locations of the jets of 3C273 and M87 in UV and X-ray bands are discussed within modern models of magnetic field generation in the relativistic jets.…

Astrophysics · Physics 2009-11-13 Gregory D. Fleishman

Here we report our recent study on the spectral energy distribution (SED) of the high frequency BL Lac object Mrk 421 in different luminosity states. We used a full-fledged chi2-minimization procedure instead of more commonly used "eyeball"…

High Energy Astrophysical Phenomena · Physics 2011-11-02 Nijil Mankuzhiyil , Stefano Ansoldi , Massimo Persic , Fabrizio Tavechhio

The class of Double-Double Radio Galaxies (DDRGs) relates to episodic jet outbursts. How various regions and components add to the total intensity in radio images is less well known. In this paper we synthesize synchrotron images for DDRGs…

High Energy Astrophysical Phenomena · Physics 2020-07-30 S. Walg , A. Achterberg , S. Markoff , R. Keppens , O. Porth

We test one-zone synchrotron self-Compton (SSC) models with high-quality multiwavelength spectral energy distribution (SED) data of Mrk 421. We use Markov chain Monte Carlo (MCMC) technique to fit twelve day-scale SEDs of Mrk 421 with…

High Energy Astrophysical Phenomena · Physics 2016-09-21 Qianqian Zhu , Dahai Yan , Pengfei Zhang , Qian-Qing Yin , Li Zhang , Shuang-Nan Zhang

In inhomogeneous optically thick synchrotron sources a substantial part of the electron population at low energies can be hidden by self-absorption and overpowered by high energy electrons in optically thin emission. These invisible…

Astrophysics · Physics 2009-11-07 Thomas Beckert , Heino Falcke

In this paper we present the spectrum of synchro-curvature self-Compton (SCSC) radiation of relativistic electrons with a power-law distribution of Lorentz factors. We find that the resulting spectrum is significantly different from that of…

High Energy Astrophysical Phenomena · Physics 2015-05-20 Bo Zhang , Zi-Gao Dai

Results of a leptonic jet model for the prompt emission and early afterglows of GRBs are presented. The synchrotron component is modeled with the canonical Band spectrum and the synchrotron self-Compton component is calculated from the…

Astrophysics · Physics 2009-11-13 Justin Finke , Charles Dermer , Markus Boettcher

In this paper a spatially resolved, fully self-consistent SSC model is presented. The observable spectral energy distribution (SED) evolves entirely from a low energetic delta distribution of injected electrons by means of the implemented…

High Energy Astrophysical Phenomena · Physics 2012-07-19 Stephan Richter , Felix Spanier

We find that energy losses due to synchrotron self-Compton (SSC) emission in blazar jets can produce distinctive signatures in the time-averaged synchrotron and SSC spectra of these objects. For a fairly broad range of particle injection…

Astrophysics · Physics 2009-11-07 James Chiang , Markus Boettcher

We examine the effect of a jet transversal structure from magnetohydrodynamic semi-analytical modelling on the total intensity profiles of relativistic jets from active galactic nuclei. In order to determine the conditions for forming…

High Energy Astrophysical Phenomena · Physics 2023-05-17 V. A. Frolova , E. E. Nokhrina , I. N. Pashchenko

We present a detailed analysis of time- and energy-dependent synchrotron polarization signatures in a shock-in-jet model for gamma-ray blazars. Our calculations employ a full 3D radiation transfer code, assuming a helical magnetic field…

High Energy Astrophysical Phenomena · Physics 2015-06-18 Haocheng Zhang , Xuhui Chen , Markus Boettcher

Analytic approximations for synchrotron, synchrotron self-Compton (SSC), and external Compton (EC) processes are used to constrain model parameters for knot and hot-spot emission in extended jets of radio galaxies. Equipartition formulas…

Astrophysics · Physics 2009-11-10 Charles D. Dermer , Armen Atoyan

We have applied an effective numerical scheme for cosmic-ray transport to 3D MHD simulations of jet flow in radio galaxies (see the companion paper by Jones et al. 1999). The marriage of relativistic particle and 3D magnetic field…

Astrophysics · Physics 2009-10-31 I. L. Tregillis , T. W. Jones , Dongsu Ryu , Charles Park

The radiation mechanisms responsible for the multiwavelength emission from relativistic jet sources are poorly understood. The modelling of the spectral energy distributions (SEDs) and light curves alone is not adequate to distinguish…

High Energy Astrophysical Phenomena · Physics 2021-02-02 Lenté Dreyer , Markus Böttcher

The broadband SEDs of blazars exhibit two broad spectral components, which in leptonic emission models are attributed to synchrotron radiation and synchrotron self-Compton (SSC) radiation of relativistic electrons. During high state phases,…

High Energy Astrophysical Phenomena · Physics 2015-05-30 Michael Zacharias , Reinhard Schlickeiser
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