INTRODUCTION Synchrotron radiation facilities are to get high brilliance and high power density of synchrotron radiation. Especially, the third generation synchrotron radiation facilities such as the European Synchrotron Radiation Facility (ESRF)(1), The Advanced Photon Source (APS)(2), and SPring-8(3) can get extremely high brilliance, high power density, and high energy photons. The shields o...

A prediction for the energy shift of the synchrotron spectrum of flat-spectrum radio quasars (FSRQs) during high-energy flares is presented. If the γ-ray emission of FSRQs is produced by Comptonization of external radiation, then the peak of the synchrotron spectrum is predicted to move to lower energies in the flare state. This is opposite to the well-known broadband spectral behavior of high-...

Only ∼10 blazars have been detected in soft gamma-rays by OSSE and the PDS, often in flaring state. We investigate the impact of the imaging and spectral capabilities of the IBIS instrument on board INTEGRAL on the study of blazars. The objectives are: 1) to remove ambiguities in the identification of some blazars as soft gamma-ray emitters; 2) to determine the spectral shape of “extreme synchr...

Working-group members: Massimo Altarelli, European Synchrotron Radiation Facility (France); Thomas Callcott, University of Tennessee Knoxville; C.T. Chen, Synchrotron Radiation Research Center (Taiwan); Jun-Liang Chen, Synchrotron Radiation Research Center (Taiwan); Jonathan Denlinger, University of Michigan; Makoto Doi, Lawrence Berkeley National Laboratory; Wolfgang Eberhardt, Forschungszentr...

We calculate the emission rate and spectrum for radiation of neutral electroweak bosons (Z”) f rom an electron in a weak external homogeneous electromagnetic field satisfying 1 f Fcly Fp”/1/2 < Fc 3 mzc3/eti. The calculational method is based on the source theory formulation of quantum field theory introduced by Schwinger. In particular for ultra-relativistic electrons, we find that the 2’ emis...

The spectral energy distribution (SED) of blazars typically has a double-humped appearance usually interpreted in terms of synchrotron self-Compton models. In proton blazar models, the SED is instead explained in terms of acceleration of protons and subsequent cascading. We discuss a variation of the Synchrotron Proton Blazar model, first proposed by Mücke & Protheroe (1999), in which the low e...

U, GaAs. b C tt 45 Q) mc) d w the direction of observation) appear both in the forward and in Bragg . & t o , t; bJ c diffracted directions in monochromatic synchrotron radiation diffraction This Treviously unobserved phenomenon can be explained in terms w m 0 G, 4 imaging. Of planar defects (interfaces) or platelets which affects the absorpcion coefficient in anomalous transmission. Such regio...