A conventional apertured-disc matrix inserted as a screening mask in the gamma-ray path, is used to project on the gamma-ray screen of the gamma-ray video amplifier tube, in the manner of a camera obscura, a number, corresponding to the number of holes in the disc, of equal individual ...
a, SED combining gamma-ray (diamonds), X-ray (circles) and UVOIR (squares) data at different times, as indicated by the labels. It shows that non-thermal radiation (solid line) dominates at early times and at higher energies. At lower energies, we identify the emergence of a thermal co...
The material in the jet can produce particle/antiparticle pairs that may produce very high energy X-rays and gamma rays. Such an object may be detectable as an X-ray pulsar if the beam is suitably aligned toward the earth. X-ray emission can also be produced by inverse comptonization of...
A Am 200 mCi source was used, which emits 59.6 monoenergetic gamma-rays, and the coherent and Compton photons, scattered at an angle of about 150were detected, together with the Ag Xsub(K)-rays. The advantage of the photon scattering technique is that a half-thickness is involved in the...
Recently, the subject has rapidly advanced with the development of observing techniques made possible by the invention of new detectors and telescopes over the entire electromagnetic spectrum from gamma rays to meter-wavelength radio emission. Superbly quantitative measurements of distant planets, satellites...
These studies employ for this purpose various high lateral resolution spectroscopic and imaging methods that make use of synchrotron radiation (SR): micro X-ray fluorescence (µ-XRF), micro X-ray absorption near-edge spectroscopy (µ-XANES), micro X-ray diffraction (µ-XRD), micro Fourier...
There are 4 main stars and 10 which have Bayer/Flamsteed designations. For unaided eye observers, the Delta, Gamma, Epsilon and Beta (what appears to look like a figure 8, Y, E and B on the map) form an asterism that looks like a “sail”, and when connected seem to point to th...
The purpose of this catalogue is to compile the BL Lac multi-frequency data that is acquired with the RATAN-600 simultaneously at several frequencies. The BL Lac objects emit a strongly variable and polarized non-thermal radiation across the entire electromagnetic spectrum from radio to gamma-rays...
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(α = 0°). The X-rays in the centre of the beam are then parallel to the rings. The cone-beam X-ray source emits rays in an angular range of ß degrees (see ß in Fig.6). For tree-ring tilt smaller than ß there are still rays that are parallel to the tree rings...