... cross-sections, phase function, etc. core-mantle spheres . ... cross-sections, phase function, etc. n-layered spheres . ... cross-sections, phase function, etc. homogeneous infinite cylinders (large sizes) . ... cross-sections, phase function, etc. homogeneous infinite cylinders . ... cross-sections, phase function, etc. core-mantle infinite cylinders . ... cross-sections, phase function, etc. homogeneous spheroids . ... cross-sections, scattering matrix?, etc. homogeneous and n-layered ellipsoids ....

... Absorption cross-sections of PAHs in the optical/UV (top) and infrared (bottom) as suggested by Li Draine (2001, dashed blue), Malloci et al. (2007, dotted green) and this work, with parameters of Table 1 for the ISM (dotted magenta) and for NGC 2023 (full magenta line). ... We present a model for the diffuse interstellar dust that explains the observed wavelength-dependence of extinction, emission, linear and circular polarisation of light. ... Dust grains with radii larger than 6 nm are spheroids....

... Plate bending . ... The plug-plates of SDSS project are responsible for locating the optical-fiber plugs spatially and for defining the plug tilt with respect to the surface of best focus. ... It can be seen from the graphs that after bending the plate and adding a central suport, the curvature of the plate was quite near that of the desired Kent005 curve. ... Upon adding a central support, however, the slope of the plate decreases to a value slightly less than that of the Kent005 curve. ...

... A comparison of the computed and experimental relations F max ( H), as well as comparison of drift scans of point sources across different horizontal cross-sections of the BP with the corresponding computed cross-sections were made. ... The drift scans of the point source 3С84 (H=87 o ) at the wavelength 7.6 cm across the horizontal cross-sections of the BP (black lines) and the computed horizontal cross-sections of the BP corresponding to them (red lines). ...

ASTEROIDAL DAMAGE TO THE EARTH: IMPLICATIONS BY ASTEROIDS ­ RUBBLE PILES. ... 13, Moscow 119892, Russia, E-mail:san@sai.msu.ru In the cause of asteroids ­ rubble piles its effective cross-section of collision to the Earth is determined not by consolidated body, but by cluster of its fragments. Since the stage of rubble ­ piles may be ~108 years (see our communication at previous symposium), it may be significant for estimation the asteroidal damage to the Earth. ...

... Solar mass M0 = 1.989x 1033 gm Solar radius Solar luminosity Earth mass Earth equatorial radius Gravity at earth's surface · Astronomical unit parsec light year Rayleigh Jansky steradian R0 L0 MEjl REjl gEjl AU pc lyr Ry ~ sr = 6.960x 1010 cm 3.826x 1033 erg s-1 5.976x 1027 gm 6.378 X 103 km 9.807x 102 cm s-2 1.496x 1013 cm 3.262 light years 3.086x 1018 cm 9.461x 1017 cm (1/411") X 106 photons/cm2/s/sr 10-26 watts/m2/Hz 3.283 X 103 deg2 1.182 X 107 arcmin2 4.255 X 1010 arcsec2 1. ...

... The reduction system of observations FADPS (description in Russian) (Flexible Astronomical Data Processing System) for data of wide-band receivers of the first observation cabin of the radio telescope RATAN-600 had been created under the Unix-like operational system DEMOS for computers of the SM-1420-type (PDP/11) in 1987 for observation analysis and estimates of coordinates and flux densities of radio sources. ... FADPS: flexible astronomical data processing system at RATAN-600 in UNIX environment....

... Numerical and bibliographical Databases in Atomic and Molecular Physics are essential for both the modelling of various astrophysical media and the interpretation of astrophysical spectra provided by ground or space-based telescopes. ... As an example we present the current status of a numerical and bibliographical database concerning collisional ro-vibrational excitation rate coefficients of molecules (http://basecol.obs-besancon.fr) 1. ...

... Particle distribution: dN d - with =1- ln pcn ln g Electron-photon conversion e + _ + _ electron _ e e electron/ positron high- energy photon e+ positron -25 cm cross-section, 10 8 6 4 2 0.5 1.0 center-of-momentum energy , MeV (log scale) 2 e + _ Proton-neutron conversion cm cross-section, 10 proton u +2/3 2 -28 d -1/3 6 u +2/3 4 resonance _ u d d+1/3 -1/3 d u+2/3 +2/3 -1/3 2 150 340 center-of-momentum ... Does the peak (cut-off) energy decrease with observation angle? Not always. ...

... DEPENDENCE OF ORDINARY WAVE ANOMALOUS ABSORPTION ON THE SOUNDING PROBLEM PARAMETERS . ... Transformation of electromagnetic wave into plasma waves plays an important role in different processes taking place in ionospheric plasma. ... According to modern point of view transformation of ordinary wave into plasma waves plays an important role in small-scale random irregularities generation when ionospheric plasma is heated by power radio wave [1,2]. ... Anomalous attenuation. ...