Spontaneously quenchedγ-ray spectra from compact sources
نویسندگان
چکیده
منابع مشابه
X-ray Emission from Compact Sources
This paper presents a review of the physical parameters of neutron stars and black holes that have been derived from X-ray observations. I then explain how these physical parameters can be used to learn about the extreme conditions occurring in regions of strong gravity, and present some recent evidence for relativistic e ects seen in these systems. A glossary of commonly used terms and a short...
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X-ray has been an important scientific tool ever since its discovery in the 1890s. X-ray used to be generated by synchrotron machines, which are large and expensive devices. However, laser-based particle acceleration offers a way to reduce the size and cost of hard-X-ray sources. Scientists have now developed a simple scheme that produces a bright flash of hard-X-rays by using a single laser pu...
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Unsteady activity of γ-ray burst sources leads to internal shocks in their emergent relativistic wind. We study the emission spectra from such shocks, assuming that they produce a power-law distribution of relativistic electrons and posses strong magnetic fields. The synchrotron radiation emitted by the accelerated electrons is Compton up-scattered multiple times by the same electrons. A substa...
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We exhibit, by compiling all data sets we can acquire, that the Fourier-frequencyÈdependent, hard X-ray lags, Ðrst observed in the analysis of aperiodic variability of the light curves of the black hole candidate Cyg X-1, appear to be a property shared by several other accreting black hole candidate sources and also by the di†erent spectral states of this source. We then present both analytic a...
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The high-frequency integrated spectra of Compact Steep Spectrum (CSS) sources show breaks with a moderate spectral steepening well fitted by continuous injection synchrotron spectra. In lobe-dominated CSS sources the radiative ages deduced by the synchrotron theory are in the range of up to 10 years, if equipartition magnetic fields are assumed. These radiative ages are well correlated with the...
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ژورنال
عنوان ژورنال: Astronomy & Astrophysics
سال: 2013
ISSN: 0004-6361,1432-0746
DOI: 10.1051/0004-6361/201321874