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Most of the Universe's populations of low energy cosmic ray electrons in the energy range of 1-100 MeV still manage to elude from detection by our instruments, since their synchrotron emission is at too low frequencies. We investigate a…

Astrophysics · Physics 2009-11-06 Torsten A. Ensslin , Rashid A. Sunyaev

The principal paradigm for the prompt emission of gamma-ray bursts invokes diffusive acceleration at shocks internal to the dynamic ultrarelativistic outflow. This paper explores expectations for burst emission spectra arising from shock…

Astrophysics · Physics 2009-11-10 Matthew G. Baring , Matthew L. Braby

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

The emission mechanism of the gamma-ray bursts (GRBs) is still a matter of debates. The standard synchrotron energy spectrum of cooling electrons F_E ~ E^{-1/2} is much too soft to account for the majority of the observed spectral slopes.…

Astrophysics · Physics 2009-11-10 Boris E. Stern , Juri Poutanen

The synchrotron-self Compton (SSC) radiation process is widely held to provide a close representation of the double peaked spectral energy distributions from BL Lac Objects (BL Lacs), which are marked by non-thermal beamed radiations,…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-13 A. Paggi , F. Massaro , V. Vittorini , A. Cavaliere , F. D'Ammando , F. Vagnetti , M. Tavani

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

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

We calculate the synchrotron self-Compton emission from internal shocks occurring in relativistic winds as a source of gamma-ray bursts, with allowance for self-absorption. For plausible model parameters most pulses within a Gamma-Ray Burst…

Astrophysics · Physics 2009-10-31 A. Panaitescu , P. Meszaros

Although the physical origin of gamma-ray burst (GRB) prompt emission is still controversial, synchrotron radiation from accelerated electrons is a promising mechanism. It is believed that electrons are accelerated continuously by…

High Energy Astrophysical Phenomena · Physics 2019-06-05 Yue Zhang , Jin-Jun Geng , Yong-Feng Huang

We discuss here constraints on the particle acceleration models from the observed gamma-ray bursts spectra. The standard synchrotron shock model assumes that some fraction of available energy is given instantaneously to the electrons which…

Astrophysics · Physics 2010-11-11 Juri Poutanen , Boris E. Stern

We present analytic approximations to the optically thin synchrotron and synchrotron self-Compton (SSC) spectra when Klein-Nishina (KN) effects are important and pair production and external radiation fields can be neglected. This theory is…

High Energy Astrophysical Phenomena · Physics 2009-10-02 Ehud Nakar , Shin'ichiro Ando , Re'em Sari

We consider the Synchrotron Self-Compton (SSC) model for jets in active galaxies in which produced $\gamma$-ray photons can be absorbed in collisions with the synchrotron radiation already at the emission region. In terms of such modified…

High Energy Astrophysical Phenomena · Physics 2014-09-30 P. Banasinski , W. Bednarek

Results of a simulation of synchrotron-self Compton (SSC) emission from a rotation-powered pulsar are presented. The radiating particles are assumed to be both accelerated primary electrons and a spectrum of electron-positron pairs produced…

High Energy Astrophysical Phenomena · Physics 2015-09-30 Alice K. Harding , Constantinos Kalapotharakos

The high polarization observed in the prompt phase of some gamma-ray bursts (GRBs) arouses extensive studies on the emission mechanism. In this paper, we investigate the polarization properties of the synchrotron-self-Compton (SSC) process…

High Energy Astrophysical Phenomena · Physics 2014-10-13 Zhe Chang , Hai-Nan Lin

Synchrotron self-Compton (SSC) process in the reverse shocks of gamma-ray bursts is suggested to be responsible for the observed prompt high-energy gamma-ray emissions from several gamma-ray bursts. We find that the SSC emission from the…

Astrophysics · Physics 2007-05-23 X. Y. Wang , Z. G. Dai , T. Lu

Multiwavelength observations of blazars such as Mrk 421 and Mrk 501 show that they exhibit strong short time variabilities in flare-like phenomena. Based on the homogeneous synchrotron self-Compton (SSC) model and assuming that time…

Astrophysics · Physics 2009-10-31 H. Li , M. Kusunose

We consider the effects of inverse Compton scattering of synchrotron photons from relativistic electrons in GRB afterglows. We compute the spectrum of the inverse Compton emission and find that it can dominate the total cooling rate of the…

Astrophysics · Physics 2008-11-26 Re'em Sari , Ann A. Esin

Synchrotron radiation and Compton scattering are widely accepted as the most likely emission mechanisms of some astrophysical phenomena, such as gamma-ray bursts (GRBs) and active galactic nuclei (AGNs). The measurement on polarization of…

High Energy Astrophysical Phenomena · Physics 2014-02-18 Zhe Chang , Hai-Nan Lin , Yunguo Jiang

Recent detection of sub-TeV emission from gamma-ray bursts (GRBs) represents a breakthrough in the GRB study. The multi-wavelength data of the afterglows of GRB 190114C support the synchrotron self-Compton (SSC) origin for its sub-TeV…

High Energy Astrophysical Phenomena · Physics 2021-03-03 Xiao-Li Huang , Ze-Rui Wang , Ruo-Yu Liu , Xiang-Yu Wang , En-Wei Liang

We present detailed calculations of nonthermal synchrotron and synchrotron self-Compton (SSC) spectra radiated by blast waves that are energized by interactions with a uniform surrounding medium. Radio, optical, X-ray and gamma-ray light…

Astrophysics · Physics 2015-09-16 Charles D. Dermer , James Chiang , Kurt E. Mitman
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