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1. Principles of the Magnetic Trapping of Particles
A full explanation of the motion of trapped particles would be too abstract and mathematical for this level, but some basic ideas may be described on an intuitive level. The magnetic force on a moving particle is always perpendicular to the motion, as well as to the magnetic field lines. That is why the basic pattern is motion in a circle, around a magnetic field line. ... The best-known periodic motion is the back-and-forth swing of a pendulum, say of a weight suspended by a string (drawing). ...
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Ссылки http://www.iki.rssi.ru/magbase/REFMAN/EAMAGSPH/wtrap2.html -- 8.1 Кб -- 21.12.2007
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2. APOD: February 5, 1997 - Running Red Rings Around Jupiter
... February 5, 1997 . Running Red Rings Around Jupiter . ... Explanation : Jupiter has rings, too. Unlike Saturn's bright rings which are composed of chunks of ice, Jupiter's rings are darker and appear to consist of fine particles of rock. ... Quite visible are Jupiter's rings , bands and spots in the outer atmosphere . ... The origin of Jupiter's rings remains unknown , although hypothesized to be created by material scattered from meteorite impacts onto Jupiter's moons . ... About APOD > . ...
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Ссылки http://www.sai.msu.su/apod/ap970205.html -- 4.8 Кб -- 02.10.2012
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3. http://zebu.uoregon.edu/51peg.html
... More on 51 Peg: . The discovery of a Jupiter--mass planet in orbit around the solar--type star 51Peg has been reported by Michel Mayor and Didier Queloz (Geneva Observatory) on October 6th at the 9th Cambridge workshop on "cool stars, stellar systems, and the sun" held at Florence (Italy). ... Recall that the measurements of radial velocity only yield v sin i which in turn gives us M sin i. For most values of i, sin i will be greater than 0.5 and this gives a mass estimate of 0.5 Jupiter masses. ...
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Ссылки http://zebu.uoregon.edu/51peg.html -- 18.2 Кб -- 31.07.2000
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4. Trapped Radiation
... Field Lines . ... Charged particles--ions and electrons--can be trapped by the Earth's magnetic field. ... A fast rotation (or "gyration") around magnetic field lines, typically thousands of times each second. ... A slow drift around the magnetic axis of the Earth, from the current field line to its neighbor, staying roughly at the same distance from the exis. ... Electrons and ions, of the energies commonly encountered in the magnetosphere, tend to circle around magnetic field lines. ...
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Ссылки http://www.cosmos.ru/mirrors/stern/Education/wtrap1.html -- 13.5 Кб -- 24.03.2006
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5. Taurid Complex
Orbital intersection . ... Structure of Taurid stream . ... Meteoroid swarm and Taurid fireballs . ... The following four diagrams schematically show four different Taurid orbits and the orbits of Earth and Jupiter. ... The Taurid stream contains particles (small, solid grains) at different stages of their precession cycles. ... The study of when a meteor stream can produce a meteor shower is the study of when precession brings orbits to intersection with Earth, or e.g. with Mars . ...
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Ссылки http://star.arm.ac.uk/~aac/zetataur.html -- 8.7 Кб -- 19.10.2007
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6. http://www.eso.org/public/news/eso1320/kids/
... Nebulae are clouds of gas and dust in space. ... These clouds come in many different varieties: some are the remains of dead stars, while others are areas of vigorous star birth, like this one. In fact, two different types can be seen in this striking new image: emission nebulae and reflection nebulae. ... The bluish patch next to the red emission nebula shows light from recently formed stars being scattered in other words, reflected in many different directions by these tiny particles. ...
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Ссылки http://www.eso.org/public/news/eso1320/kids/ -- 11.0 Кб -- 11.04.2016
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7. Thin Rings Around Polarized Saturn
... 19.12.2005 . ... Credit: Cassini Imaging Team , SSI , JPL , ESA , NASA Explanation: How thin are the rings of Saturn? ... The above artistic looking image was taken early last month in infrared polarized light. ... Reflection of light off of moons like Enceladus (pictured) and the billions of small particles in Saturn's rings , however, gives the giant space orb an unusual glow, an effect highlighted in polarized light. ... 2007 . ... Publications with keywords: Saturn - saturn rings . ... Ring Scan...
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Ссылки http://www.astronet.ru/db/xware/msg/1210479 -- 14.3 Кб -- 19.12.2005
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8. ASP:
... In a solar prominence, charged particles stream up from the Sun, spiraling around magnetic field structures poking out of the solar surface, and ultimately fall back along those structures into the Sun. ... As evolution would predict, animals' eyes sense the colors of light emitted most strongly by the Sun. ... The tiny Moon can completely cover the disk of the Sun, blocking most of the emitted visible light, and reveal the Sun's faint outer atmosphere called the corona...a mass of incandescent gas ...
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Ссылки http://www.astrosociety.org/edu/publications/tnl/41/eyeonsun.html -- 14.5 Кб -- 02.10.2012
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9. 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 Astronomy.com! ...
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Ссылки http://www.astronomy.com/magazine/ask-astro/2011/03/when-particles-collide -- 63.4 Кб -- 10.04.2016
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10. The Ever-changing Circumstellar Nebula around UW Centauri
We present new images of the reflection nebula surrounding the R Coronae Borealis Star, UW Centauri. ... Instead, the morphology of the nebula appears to change as different parts are illuminated by light from the central star that is modulated by shifting thick dust clouds near its surface. ... In this way, the central star acts like a lighthouse shining through holes in the dust clouds and lighting up different portions of the nebula. ... ADS Citation Query . citations = 21 . ...
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Ссылки http://www.stsci.edu/~kgordon/papers/1999ApJ...517L.143C.html -- 4.1 Кб -- 21.01.2016
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11. E-P transitions for different orbits
Next: The Scenario Machine: Operational Up: Evolution of Magnetic Rotators Previous: Ejector-propeller hysteresis . ... The length of this segment is determined by the eccentricity. ... In this case no hysteresis occurs and transitions E -- P and the reverse take place in symmetrical points of the orbit. ... Here EP means a mixed state of the rotator at which it is in the ejector state during one part of the orbit, and in the propeller state during the rest of the orbital cycle. ...
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Ссылки http://xray.sai.msu.ru/~mystery/articles/review/node32.html -- 10.3 Кб -- 26.02.1997
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12. Searching the Environment around LyAlpha Absorbers
... This talk focuses on exploring the connection between Ly absorbers and galaxies. The theorist view of gas in the low z universe is based on the filamentary structures that are evident in simulations based on the CDM paradigm. ... The observer's view of gas in the low-z universe is based on the Ly absorbers which have column densities as low as 10 cm , while galaxies are at column densities of 10 cm . ... The absorber has N cm . ... Can examine LSS defined by gas-rich galaxies around absorbers. ...
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Ссылки http://www.naic.edu/alfa/ealfa/meeting1/minutes/lyalpha.html -- 9.9 Кб -- 08.05.2006
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13. Phil Plait's Bad Astronomy: Misconceptions
... Bad Astronomy . Misconceptions . ... Bad Astronomy : The Moon only shows one face to us because it is not rotating. Better astronomy : The Moon only shows one face because it is rotating, once every time it revolves around the Earth. ... Place the Moon model on the table about 30 centimeters (one foot) away with the X facing the Earth model. ... You'll see that to keep the X facing the Earth model, you have to rotate the Moon model as it goes around the Earth model . ... 2008 Phil Plait. ...
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Ссылки http://www.badastronomy.com/bad/misc/moon_spin.html -- 21.9 Кб -- 09.04.2016
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14. Atmospheric influence on the different radioengineering systems functioning.
Atmospheric influence on the different radio-engineering system functioning . ESTIMATION OF ATMOSPHERIC OPTICAL CHARACTERISTICS AND REMOTELY SANSED IMAGE CORRECTION . ... Direct transmittance estimation results for 12 channels of the spectrometer CHRIS. ... We have managed to develop a direct method of estimating the discrete Normalized Atmospheric Point Spread Function (NAPSF) from available images alone, not using any external sources of information about the atmosphere. ... IRE RAS 1996-20 11 ...
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Ссылки http://www.cplire.ru/html/atm/correction.html -- 19.8 Кб -- 18.10.2011
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15. Wavelength dependence
... The first task assumes the searching for chemical composition and sizes of particles which give the wavelength dependence of the extinction efficiencies close to the observed dependence of . Figure 7: Wavelength dependence of the extinction efficiency factors for homogeneous spherical particles of different sizes consisting of astronomical silicate and amorphous carbon. The dashed segment shows the approximate wavelength dependence of the mean galactic extinction curve at optical wavelengths. ...
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Ссылки http://www.astro.spbu.ru/DOP/8-GLIB/ASTNOTES/node3.html -- 15.8 Кб -- 19.11.2010
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16. F-stars in galactic disk, figures
... The metallicity distribution of disk F stars in different age ranges: the left column for the sample of stars within 80 pc around the Sun; the right column for the restored complete sample at the solar galactocentric distance with allowance made for the radial metallicity gradient. The numbers indicate the age ranges expressed in billions of years. ... next figure . ...
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Ссылки http://ip.rsu.ru/~marsakov/paper4/p4fg1_1.htm -- 2.4 Кб -- 02.02.2007
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17. Time Particles - And The Lack There Of. - an Astronomy Net Blackholes2 Forum
Blackholes2 Forum Message . ... Time Particles - And The Lack There Of. ... There is no such thing as time. ... For example time travel isn't possible really. ... The whole idea that travelling faster than light will send you back in time is more than ridiculous. ... No such thing as time, no so such thing as time travel or time particals. ... www.astronomy.net . ... Forum posts are Copyright their authors as specified in the heading above the post. "dbHTML," "AstroGuide," "ASTRONOMY.NET" & "VA.NET" . ...
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Ссылки http://www.astronomy.net/forums/blackholes2/messages/4992.shtml -- 14.7 Кб -- 09.04.2016
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18. APOD: July 16, 1999 - Solar Surfin
... Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer. July 16, 1999 . Solar Surfin' . Image Credit: High Altitude Observatory , NCAR . Explanation: The sun's corona is a tenuous outer atmosphere composed of streams of energetic charged particles, but it is only easily seen from Earth during a total solar eclipse . ... About APOD > . ...
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Ссылки http://www.arcetri.astro.it/~palla/ANDREAIMMAGINI/sun/eclipse91_ncar_big.html -- 4.9 Кб -- 07.12.2000
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19. Day and Night Links
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Ссылки http://hea-www.harvard.edu/ECT/nightday.html -- 2.8 Кб -- 01.10.2012
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20. Basic Idea
... Meta Index / Home Page / Description There are several different deadtime contributions that have to be taken into account during the EPIC pn ODF processing: one factor depends solely on the readout mode, the second is related to deadtimes due to discarded CCD columns because of on-board MIP (Minimum Ionizing Particle) rejection, the third factor represents additional deadtimes from MIP rejection per frame per CCD by ground software. ... MIP dependent quadrant livetime factor FC1 . ...
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Ссылки http://xmm.vilspa.esa.es/sas/6.5.0/doc/epexposure/node4.html -- 4.4 Кб -- 16.08.2005
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