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). ...

... Two Kinds of Non-Baryonic Dark Matter: Cold vs Hot . Non-baryonic dark matter comes in two basic forms: hot and cold. ... A cold dark matter (CDM) universe gives rise to much different structure formation modes than a hot dark matter (HDM) universe. ... Unlike CDM, HDM has one real particle candidate, the neutrino . ... At the point where kT = neutrino rest mass the universe has some horizon size, r hor and variations in neutrino density can only occur on scales larger than r hor . ...

... The Sun gives us light and heat, sustaining life on Earth. ... This uneven rotation, coupled with the churning of the upper layers, might well be what produces (by a "dynamo mechanism", described in a later section) regions of intense magnetic field, seen by observers on Earth as dark sunspots. ... Near sunspots those streamers seem to be shaped by the Sun's magnetic field lines, and above the Sun's poles they suggest field lines rising from twin magnetic poles like those of the Earth. ...

... What is there beyond the edge of the universe? ... This is often illustrated by newspaper headlines: "Scientist sees face of God, confirms Big Bang model" (a reference to results from the Cosmic Background Explorer satellite), "Is the cosmos younger than some of the stars it contains? ... The Lone Universe . ... We cannot reproduce it; we cannot take another one and see what happens to it; we cannot compare it to anything else, as astronomers routinely do with planets, stars, and galaxies. ...

Bigbang Forum Message . Forums: . ... String Cosmology And Consciousness . ... Our consciousness is a superfluid because the main property of a superfluid is that it seems to know everything in its realm instantly. ... Following my stream of consciousness rather than trying to be coherent, another principal property of superfluids is that particles in superfluids can pass through each other just like boson waves can pass thru each other. ... www.astronomy.net . About Astronomy Net | ...

... ATNF Home . About ATNF . ... About ATNF overview . ... Resonant inverse Compton scattering above polar caps: Gap acceleration efficiency for young pulsars . ... Title/Abstract Page: Resonant inverse Compton scattering . ... For a hot polar cap which emits soft photons, RICS can constrain the maximum energies of electrons (or positrons) accelerated in the polar gap in the following two ways: the energy loss competes with acceleration, or by limiting the acceleration length through pair production. ...

Lectures . ... Home Lectures Lecture Series 2010-2011 Lecture Series 2010-2011 ? Particle Physics at the LHC and Cosmology? by Michael Tuts . ... Lecture Series 2010-2011 . ... Beyond New York City . ... Observing Resources for Amateur Astronomers - Part 1: Beginning Observers . ... A History of the First Forty Years of the Amateur Astronomers Association . ... Amateur Astronomers Medal . ... 2016 Amateur Astronomers Association of New York Designed by Press Customizr Powered by . ...

... No one is watching as he comes a walking. ... He goes through the door, he starts up the stairs. The sound of his footsteps, the sound of his breathing, The sound of the silence when no one was there. ... He never seemed to change. ... So much to do and so little time. He looks at the city where no one had known him. He looks at the sky where no one looks down. ... I found a way that will get me an answer. ... Right now ! ... One got Mrs. Gibbons above her right eye. ...

... Armagh Observatory, College Hill, Armagh BT61 9DG, +44 (0)28 3752 2928 . Comet C/2011 L4 (PANSTARRS) on 2012 August 9th. ... A new comet, called C/2011 L4 (PANSTARRS), is expected to become visible for a few weeks from approximately 10th March in the western sky after sunset. The comet has come from the Oort cloud, which comprises a vast swarm of comets surrounding the solar system and extending more than halfway to the nearest star, that is more than two light years from the Sun. ...

Hall effect, Jack polynomials, CFT.. ... N_k particles in orbital k... ... Competition between interactions which spread electrons apart and high compression which minimizes the degree n. Ground state is the minimal degree symmetric polynomial compatible with the repulsive interaction. ... 7 Important quantum number with a topological interpretation · Filling factor equal to number of particles p e r u n it c e ll: · = Number of variables Degree of polynomial 1 3 In the preceding case. ...

... 29.08.2004 . Our Moon's appearance changes nightly. ... As the Moon orbits the Earth, the half illuminated by the Sun first becomes increasingly visible, then decreasingly visible. The Moon always keeps the same face toward the Earth. APOD: 2004 August 28- M17: A Hubble Close-Up . ... APOD: 2004 August 27- The Sedna Scenario . ... APOD: 2004 August 26- Cassiopeia A in a Million . ... APOD: 2004 August 24- Supply Ship Approaches the Space Station . ... Earth at Night . ... Solar Sail . ...

... 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. ...

... Informazioni . Informazioni generali . ... Personale . Personale di Ricerca . Personale tecnico, amministrativo, bibliotecario . ... Personale in ordine alfabetico . ... Informazioni varie . Informazioni specifiche . ... Informazioni sindacali . ... Phenomenology of particle acceleration in supernova remnants in the proximity of molecular clouds - DD71/2015 . ...

... Tonight's Sky . ... The Magazine . ... Observing . ... The double star 54 Leonis, spiral galaxy NGC 3198, and emission nebula NGC 3199 . ... Astronomy for Kids . ... Observing springtime deep-sky objects with a large telescope . ... Bright planets meet at dusk . ... Astronomy magazine subscribers can read the full article for free. ... Get instant access to subscriber content on Astronomy.com! ... Receive news, sky-event information, observing tips, and more from Astronomy's weekly email newsletter....

STEP INTO THE BLUE - MEADE INSTRUMENTS PRODUCT GUIDE . ... Telescopes . LX850 Series . ... Superb optical performance coupled with time proven computerized pointing and tracking has made the LX200 ACF series a best-seller in the high-performance telescope class. ... Meade's revolutionary LS LightSwitchтДв series of telescopes use advanced technologies to do what no other consumer telescopes have done before: take all the hassle out of using a telescope. ... Support . ... Become a Meade Dealer . ...

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. ...

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