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1. Linear polarization: wavelength dependence
... Fitting the observed dependence includes calculations of the polarization cross-sections averaged over particles orientation and size distribution, their normalization and the comparison of obtained dependencies with Serkowski's curve representing observational data for a chosen star. ... Variations of the polarization factors with wavelength are shown in Fig. 16 for homogeneous spheroidal particles with PF orientation. ... The distinction between prolate and oblate spheroids is also clearly seen. ...
[ Сохраненная копия ]  Ссылки -- 18.9 Кб -- 19.11.2010
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2. Magnetic fields, subatomic particles, etc., traveling in different directions
... Magnetic fields, subatomic particles, etc., traveling in different directions fill the universe. Do they deflect or otherwise affect one another? If so, isnт??t the information we get from them distorted? ... Neutrino astronomy, which is still in its infancy, is attractive because neutrinos interact so weakly with matter that few of these distorting effects occur. Get instant access to subscriber content on! ...
[ Сохраненная копия ]  Ссылки -- 63.4 Кб -- 10.04.2016
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3. Space Physics Group of Oulu
... We start investigating the results from a non-magnetized (isotropic) plasma, before including the external magnetic field so important for space physics. ... propagating above the electron plasma frequency, w(pe) (reflection point for the waves) . note that, for very high frequencies, both phase and group velocities are equal to light velocity c, and we have electromagnetic wave in free space: even the electrons are unable to respond to the rapidly oscillating electric field! . ...
[ Сохраненная копия ]  Ссылки -- 7.8 Кб -- 21.12.2007
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4. Results of calculations
Next: Discussion Up: Old neutron star distribution Previous: Galactic potential . It proves to be teachful to have a look at the calculated distribution (Fig. ... The galactic z -distribution of stars and peculiar velocities slightly smear out this narrow boundary. ... The final picture (Fig. ) of the old neutron star density distribution is obviously the sum of filled equipotential lobes with different weighted with the probability shown in the Fig. ...
[ Сохраненная копия ]  Ссылки -- 6.0 Кб -- 19.08.1996
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5. PPEUC Programme - Cosmic Microwave Background Workshop
... Primordial theory review : Dick Bond . Defects and the CMB review : Andy Albrecht . ... Gravitational wave contribution to CMB anisotropies : V.B. Lukash and E.V. Mikheeva . C_l from cosmic strings : Lloyd Knox . Some aspects of CMB anisotropies induced from topological defects : Mairi Sakellariadou . ... CMB anisotropies from scaling sources : Ruth Durrer . ... SZ observations I : Sarah Church . ... Holes in the microwave sky? ... Detecting cosmic strings in the CMB : James Robinson . ...
[ Сохраненная копия ]  Ссылки -- 9.9 Кб -- 24.02.1998
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6. SKA-3 Experiment Description
... It consists of two energy-angle analyzers EA-2 and EA-3 for low energy particles, and two identical oppositely directed time-of-flight (TOF) analyzers EM-1-1 and EM-1-2 for high energies. ... Analyzers of low energy charged particles (EA-2 and EA-3). ... The instruments allow to measure simultaneously in eight angular sectors evenly distributed in the angle 2 perpendicular to the satellite rotation axis, and sequentially in 7 energy intervals for each angular sector. ... Interval . ...
[ Сохраненная копия ]  Ссылки -- 5.4 Кб -- 07.08.1997
[ Сохраненная копия ]  Ссылки -- 5.4 Кб -- 07.08.1997
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7. INR RAS - Baksan Neutrino Observatory (BNO)
BNO is in Baksan Gorge at the Northern Caucasus . ... The Baksan Underground Scintillation Telescope (BUST) of volume 3000 cubic centimeters at a depth of more 300 m. The mountainous plant ANDYRCHI to register wide air showers located over BUST on the area 5*10 4 square metres. The complex of surface plants KOVER including a large muon detector, a scintillation telescope and a neutrino monitor meant for studying the hard component of cosmic rays and wide air showers. ...
[ Сохраненная копия ]  Ссылки -- 4.5 Кб -- 10.04.2016
[ Сохраненная копия ]  Ссылки -- 4.5 Кб -- 09.04.2016
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9. Department of Solid State Physics MIPT
Chair of solid state physics . ... One-particle Green’s function (Non interacting fermions) . Verbal definition of retarded one-particle Green’s function. ... One-particle Green’s function (Interacting fermions) . Formal definition of one-particle Green’s function. ... Quasi particles in Hartree-Fock approximation. ... Quasi particles and one-particle Green’s function. ... Vertex function and scattering of quasi particles. ... Matsubara Green’s function foe free particles. ...
[ Сохраненная копия ]  Ссылки -- 6.6 Кб -- 10.04.2016
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... COMPUTER SIMULATION OF RADIOWAVE MULTIPLE SCATTERING EFFECTS IN IONOSPHERE USING MONTE-CARLO METHOD . ... Distribution of reflected radiation on the ground is computed. ... Such influence can be remarkable if the scattering is multiple, i.e. the optical thickness for the scattering process is considerably greater than a unit. ... Radiation energy transfer in the slab is modeled by distribution of some particles carring small portions of radiation energy. ... The isotropic plasma approximation is...
[ Сохраненная копия ]  Ссылки -- 12.8 Кб -- 02.02.2007
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11. Earth, Clouds, Sky, Comet
... Credit: J. Aasland , Norway Explanation: Does a comet's dust tail always orbit behind it? Since comets rotate, they shed gas and dust in all directions equally. Small ice and dust particles expelled by the comet, however, are literally pushed around by sunlight. ... When the comet is headed inward, sunlight slows down small particles so they orbit behind the comet. When the comet is headed back out though, sunlight speeds them up, so small particles orbit in front of the comet. ...
[ Сохраненная копия ]  Ссылки -- 12.6 Кб -- 23.06.2003
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12. Thesis Figures
Paths of the incident light and light scattered toward the observer for a single particle in an optically thin nebula. The scattering angle theta scat measures the amount by which the light the observer sees has been deflected from its incident path. ...
[ Сохраненная копия ]  Ссылки -- 1.8 Кб -- 27.06.1999
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13. Worked Example 01
Imagine that you are doing particle physics experiments. You fire a beam of sub-atomic particles of mass 4.0x10 -24 kg into your detector at a speed of 100 m/s. Most pass straight through undeflected, but one of them came out with its mass reduced to 3.0x10 -24 kg, its speed reduced to 80 m/s, and in a direction which was deflected by 2.4 degrees from its original path. You think that it must have ejected a particle of mass 1.0x10 -24 kg. ...
[ Сохраненная копия ]  Ссылки -- 2.1 Кб -- 02.10.2012
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14. Removal of particle hits
Next: Background Definition Up: Echelle Spectra Previous: Order Definition . ... Their removal is a rather delicate step, because in high-contrast images (such as well-exposed echelle spectra) there is always a danger of damaging the scientific contents of the frame. Particle hits can be removed from scientific exposures by splitting the exposure and comparing spectra of the same target obtained under the same instrumental configuration. ... Note that the background has been subtracted already. ...
[ Сохраненная копия ]  Ссылки -- 6.8 Кб -- 23.02.1996
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15. The AstroStat Slog particle filter
... Posts tagged ?particle filter? ... Astronomers have developed their ways of processing signals almost independent to but sometimes collaboratively with engineers, although the fundamental of signal processing is same: extracting information. ... This particular issue of IEEE signal processing magazine may shed lights for astronomers interested in signal processing and statistics outside the astronomical society. IEEE Signal Processing Magazine Jul. ... ArXiv] 3rd week, Dec. ... Entries RSS . ...
[ Сохраненная копия ]  Ссылки -- 23.9 Кб -- 01.03.2014
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16. insbs: INStrument BoreSight calculation
... insbs instrument=<instr> ra=<ra> dec=<dec> apos=<apos> bstoolsout=true|false . ... Given the viewing direction of the star tracker in terms of Right Ascension and Declination of the boresight + astronomical position angle insbs computes the viewing direction of the instrument specified via the instrument parameter - result is written to stdout in verbose form (default) or as a strbs command line if bstoolsout =true. ...
[ Сохраненная копия ]  Ссылки -- 4.4 Кб -- 02.07.2008
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17. Phil Plait's Bad Astronomy: Misconceptions
... Bad Astronomy . Misconceptions . ... Bad Astronomy : The sky is blue because it reflects light from the oceans. Good astronomy : The sky is blue because it is scattering blue light from the sun. ... So everywhere you look you see blue photons, except directly from the Sun, where you'll see all colors. ... The sky does not look blue near the horizon because more yellow photons (and even orange ones right at sunset) are coming from that direction as they get scattered away from the Sun. ...
[ Сохраненная копия ]  Ссылки -- 22.3 Кб -- 09.04.2016
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18. APOD: April 3, 1997 - Earth, Clouds, Sky, Comet
... April 3, 1997 . Earth, Clouds, Sky, Comet . ... Explanation : Does a comet's dust tail always orbit behind it? ... Small ice and dust particles expelled by the comet, however, are literally pushed around by sunlight. ... When the comet is headed inward, sunlight slows down small particles so they orbit behind the comet. When the comet is headed back out though, sunlight speeds them up, so small particles orbit in front of the comet. ... About APOD > . ...
[ Сохраненная копия ]  Ссылки -- 4.2 Кб -- 21.12.2007
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19. Cosmic Ray Directions and Sources
... ATNF Home . ... About ATNF overview . ... Australia Telescope Steering Committee . ... Murchison Radio-astronomy Observatory . ... Parkes radio telescope . ... Mopra radio telescope . ... Online Resources . ... Visiting Parkes radio telescope . ... Parkes radio telescope webcam . ... The Two Point Angular Autocorrelation Function and the Origin of the Highest Energy Cosmic Rays . ... Catalogues of arrival directions for cosmic rays with energies above 10 20 eV contain directions from all over the...
[ Сохраненная копия ]  Ссылки -- 54.5 Кб -- 08.04.2016
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20. Solar Physics Department
... B.V. Somov . head of the department . ... room 80 . ... senior research felow . ... research felow . ... research fellow . ... Our department performes the following most perspective studies: . Special analytical and numerical experimental investigations of the solar plasma involved in the magnetic reconnection process at the Sun. ... Head of the seminar: Prof. B.V. Somov. ... 27 September 2013 The Solar Physics Department was visited by journalists of the leading Russian TV channel "Vesti-1". ...
[ Сохраненная копия ]  Ссылки -- 6.3 Кб -- 19.10.2015
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