763 research outputs found
“SOFT POWER”, COMMUNICATION AND THE PROBLEM OF HUMANITARIAN CRISIS
The article is devoted to the philosophical inquiry of the worldview connection between soft power, information and humanitarian crisis of modernity. The purpose of the work is the integrative philosophical analysis of the expression of the “soft power” and informational technologies in the modern social context. It has been concluded that the main negative aspect of “soft power” influence is depreciation of human personality as the last value of the informational society. The way out can be found in transformation of the systems and sub-systems of social communication. Key words: Knowledge, Soft Power, Influence, Information, Society.  Â
Multi-wavelength Emission from the Fermi Bubble III. Stochastic (Fermi) Re-Acceleration of Relativistic Electrons Emitted by SNRs
We analyse the model of stochastic re-acceleration of electrons, which are
emitted by supernova remnants (SNRs) in the Galactic Disk and propagate then
into the Galactic halo, in order to explain the origin on nonthermal (radio and
gamma-ray) emission from the Fermi Bubbles (FB). We assume that the energy for
re-acceleration in the halo is supplied by shocks generated by processes of
star accretion onto the central black hole. Numerical simulations show that
regions with strong turbulence (places for electron re-acceleration) are
located high up in the Galactic Halo about several kpc above the disk. The
energy of SNR electrons that reach these regions does not exceed several GeV
because of synchrotron and inverse Compton energy losses. At appropriate
parameters of re-acceleration these electrons can be re-accelerated up to the
energy 10E12 eV which explains in this model the origin of the observed radio
and gamma-ray emission from the FB. However although the model gamma-ray
spectrum is consistent with the Fermi results, the model radio spectrum is
steeper than the observed by WMAP and Planck. If adiabatic losses due to plasma
outflow from the Galactic central regions are taken into account, then the
re-acceleration model nicely reproduces the Planck datapoints.Comment: 33 pages, 8 figures, accepted by Ap
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