7,380 research outputs found
Properties of the Intergalactic Magnetic Field Constrained by Gamma-ray Observations of Gamma-Ray Bursts
The magnetic field in intergalactic space gives important information about
magnetogenesis in the early universe. The properties of this field can be
probed by searching for radiation of secondary ee pairs created by TeV
photons, that produce GeV range radiation by Compton-scattering cosmic
microwave background (CMB) photons. The arrival times of the GeV "echo" photons
depend strongly on the magnetic field strength and coherence length. A Monte
Carlo code that accurately treats pair creation is developed to simulate the
spectrum and time-dependence of the echo radiation. The extrapolation of the
spectrum of powerful gamma-ray bursts (GRBs) like GRB 130427A to TeV energies
is used to demonstrate how the IGMF can be constrained if it falls in the
- G range for 1 Mpc coherence length.Comment: 8 pages, 6 figure
Technology transfer
Scientific and methodological recommendations have been developed for improving the organizational and economic mechanism for transferring intellectual products. Particular attention is paid to the development of organizational forms of technology transfer, management of the processes of creation, production and marketing of intellectual products. Developed recommendations for the valuation of technology and pricing it. The issues of monitoring innovation processes in the creation, production and transfer of technological products, as well as in assessing their economic efficiency are considered
Searching for galactic sources in the Swift GRB catalog
Since the early 1990s Gamma Ray Bursts have been accepted to be of
extra-galactic origin due to the isotropic distribution observed by BATSE and
the redshifts observed via absorption line spectroscopy. Nevertheless, upon
further examination at least one case turned out to be of galactic origin. This
particular event presented a Fast Rise, Exponential Decay (FRED) structure
which leads us to believe that other FRED sources might also be Galactic. This
study was set out to estimate the most probable degree of contamination by
galactic sources that certain samples of FREDs have. In order to quantify the
degree of anisotropy the average dipolar and quadripolar moments of each sample
of GRBs with respect to the galactic plane were calculated. This was then
compared to the probability distribution of simulated samples comprised of a
combination of isotropically generated sources and galactic sources. We observe
that the dipolar and quadripolar moments of the selected subsamples of FREDs
are found more than two standard deviations outside those of random
isotropically generated samples.The most probable degree of contamination by
galactic sources for the FRED GRBs of the Swift catalog detected until February
2011 that do not have a known redshift is about 21 out of 77 sources which is
roughly equal to 27%. Furthermore we observe, that by removing from this sample
those bursts that may have any type of indirect redshift indicator and multiple
peaks gives the most probable contamination increases up to 34% (17 out of 49
sources). It is probable that a high degree of contamination by galactic
sources occurs among the single peak FREDs observed by Swift.Comment: Published to A&A, 4 pages, 5 figures, this arXiv version includes
appended table with all the bursts considered in this stud
Human robot interaction for future remote manipulations in Industry 4.0*
In the nuclear industry it is still common to rely on tele-operated robots. Tele-operation however can be strenuous and demanding on operating personnel and productivity can be low without advanced HRI interfaces. Today, the world is moving towards Industry 4.0. With that vision, this paper introduces the concept of Remotely Instructed Robots (RIRs), which are reliable yet rely on human intelligence. RIRs can accept high and low level instructions from the operator and execute tasks based on operators’ descriptions and at a variety of complexity levels. The paper outlines an agent model of RIRs and furthermore, presents how it could be implemented inside nuclear gloveboxes to achieve novel human robot interaction
- …