... Aurora from Space . ... Magnetic Storms . ... The "ring of fire" seen by satellite cameras around the polar caps (picture below) is probably created by electrons leaking from the tail's plasma sheet, whose magnetic field lines form a somewhat imperfect trap. ... One possible explanation involves the close association between auroral arcs and electric currents which flow along field lines between the ionosphere and distant space ( Birkeland currents ). ... Why no aurora at the magnetic poles? ...

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• The Polar Aurora
• La Aurora Polar
• The Polar Aurora -- History

The "ring of fire" seen by satellite cameras around the polar caps (picture below) is probably created by electrons leaking from the tail's plasma sheet, whose magnetic field lines form a somewhat imperfect trap. ... One possible explanation involves the close association between auroral arcs and electric currents which flow along field lines between the ionosphere and distant space ( Birkeland currents ). ... That produces an extra resistance to the flow of current. ...

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• Low latitude aurorae [Oulu)
• Proton aurora [Oulu]
• The Polar Aurora

... 2003 December 17 . A Proton Aurora . Credit: IMAGE Satellite , NASA . ... Triggered by solar activity, normal auroras are caused by collisions between fast-moving electrons and the oxygen and nitrogen in Earth's upper atmosphere. ... Such a proton aurora is seen above, recorded by the IMAGE satellite . ... Most solar wind protons never reach the Earth to cause auroras because they are completely deflected away at a great distance by the Earth's magnetic field . ... About APOD | ...

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• APOD: 2007 July 15 - Aurora from Space
• APOD: 2000 December 19 - A Close Up of Aurora on Jupiter
• APOD: 2014 October 14 - Auroral Corona over Norway

... A Proton Aurora . ... Most auroras are caused by the solar wind exciting electrons that are funneled down the Earth's magnetic field . ... A proton aurora captured by the IMAGE satellite in ultraviolet is shown above ringing the north magnetic pole of planet Earth. Most electrons and protons never reach the Earth to cause auroras because they are completely deflected away at a great distance by the Earth's magnetic field . ... Publications with keywords: aurora - proton . ... Aurora Over Alaska . ...

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• Астронет > A Proton Aurora
• A Close Up of Aurora on Jupiter
• Green and Black Auroras Over Norway

... Bad Astronomy . ... Mad Science . ... Keep Bad Astronomy close to your heart, and help make me filthy rich. ... What is the cause of auroral sound the sometimes occurs with an aurora? ... The Earth's magnetic field guides the particles to the north or south pole, where they hit air molecules. ... So aurorae are an electrical/magnetic phenomenon. ... This high, the air is extremely thin and not capable of supporting sound. ... 2008 Phil Plait. ... Subscribe to the Bad Astronomy Newsletter! ...

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Direct Electron Imaging Using Back Thinned CCDs . EBCCD Principles . Back-illuminated CCDs are sensitive to kilovolt-energy electrons incident on the back surface through the EBS gain process. ... Backside enhancement techniques such as UV charging, ion implanting, and annealing and flash gate technologies are designed to reverse the field near the surface so that electrons generated there are repelled and collected in the CCD well. ... Cross-sectional drawing of a proximity focused EBCCD. ...

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• Direct electron imaging-abstract
• Electron bombarded sensors-reliability
• Direct electron imaging-model

. Introduction Archie Howie (Cambridge) . Electron Centenary Lecture Michael Green (DAMTP, Cambridge) . Last updated 17 May 1997, Richard Batley

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• PPEUC Proceedings Home Page

... It was shown in the early 1980's that spectral lines formed around 1-2.5 x 10 5 K were enhanced in radiance by factors up to 15-25 over the normal quiet Sun. From the dynamical viewpoint, this would suggest a pressure imbalance between the sunspot and the surrounding region. ... Here, the electron density was evaluated over a bright sunspot plume region using lines within the O V 760? multiplet. ... The derived densities in all four regions are indicated. ...

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• Solar Physics Research
• Armagh Observatory
• Objects in the Sky

... RAS members working in ISSP . ... Electrons in Disordered Media . ... The course deals with state-of-the-art concepts of electron behavior at low temperatures in disordered media such as highly doped semiconductors, amorphous metals, conducting materials in the vicinity of phase transitions. ... Disordered high density electron systems. Liquid metals. ... Resistance saturation in metals with strong electron-phonon interaction. Absence of Anderson localization in high density electron systems. ...

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• Laboratory of Electron Kinetics
• Staff of the Laboratory of Electron Kinetics
• Interacting Electrons in Normal Metals

... Russian Academy of Sciences, Department of Physical Sciences , Project number . ... Bicrystal junction and heterostructures made of cuprate oxide material with strong correlated electrons will be investigated. ... DC, microwave and noise properties of the junction will be investigated. ... To investigate noise spectral density in oxide superconducting bicrystal junction. ... To develop new type of bicrystal junction with misorientation of c axes around the basic plane axes. ...

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• Kotel'nikov IRE RAS, LASLDS
• IRE RAS. Computational Physics Laboratory.

VASYL MYKOLAYOVYCH IVCHENKO . ... ASTRONOMY and SPACE PHYSICS, KIEV UNIVERSITY, KIEV, UKRAINE . EDUCATION 1966-1971 : student, Kiev University, Faculty of Physics, Astronomy Dept., graduated 1971, diploma ? ... Thesis: "Optical observations of the effects of electron beams injections in control space experiments". ... Kiev University. ... Faculty of Physics, Kiev University. ... Kiev, 1995. ... Address : T.Shevchenko Kiev University, Faculty of Physics, Astronomy and Space Physics Dept., ...

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• ION AND ELECTRON ENERGY DETECTOR PAN-2
• The Satellite Telescope of Electrons and Protons STEP
• Vasyl M. Ivchenko

. Energetic electrons creating aurora. ESA/G. Marklund

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• http://www.astronomy.com/sitefiles/resources/image.aspx?item=%7BEF720739-4A19-4A2A-9AB7-94F3C2A7BAB4%7D
• Spacecraft detects aurora and mysterious dust cloud around Mars | Astronomy.com
• Scientists launch NASA rocket into aurora | Astronomy.com

... Research objects and scientific purposes . Space scientific program includes development and launch of two supersmall spacecrafts "Universitetskiy" and "Kompas-2" intended for monitoring of radiation conditions near the Earth. ... All the studies conducted in the near-Earth space are characterised by strong radiation fields. ... The circular polar orbits, which cover all the near-Earth space, are the most favorable for comprehensive studies of the radiation conditions near the Earth. ...

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... STScI-PRC98-05 HUBBLE PROVIDES CLEAR IMAGES OF SATURN’S AURORA This is the first image of Saturn’s ultraviolet aurora taken by the Space Telescope Imaging Spectrograph (STIS) on board the Hubble Space Telescope in October 1997, when Saturn was a distance of 810 million miles (1.3 billion kilometers) from Earth. ... But unlike the Earth, Saturn’s aurora is only seen in ultraviolet light that is invisible from the Earth’s surface, hence the aurora can only be observed from space. ...

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• CHIANTI atomic database

.

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• The Creation of Helium
• Lecture VI.
• Photovoltaics: Efficiency and Cost Effectiveness

... High-resolution Measurements of Naturally Occurring HF Waves in the Auroral Region . By deploying a small broadband antenna and spectrum analyzer in the auroral zone, one can easily detect at least three different kinds of naturally occuring radio signals emitted by Earth's aurora: A broadband emission below 1 MHz, called auroral hiss; a broadband emission at 1.5-4.5 MHz, called MF-burst; and narrowband emissions near 2.8 and 4.2 MHz, called auroral roar. ...

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• composition

... WFC3 Data Handbook > Chapter 6: Charge Transfer Efficiency (CTE) > 6.2 The Nature Of CTE Losses . ... The Nature Of CTE Losses . ... These traps can temporarily detain individual electrons. ... The dip between 12 and 30 electrons shows the "sweet spot" background level, where the charge transfer is maximized at low background levels. ... We see that a charge packet that contains just one electron will encounter 20 traps on its 2000-pixel journey to the serial register, if there is no background. ...

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• Fabrication Technology for Single Electron Transistors and Submillimeter
• Superconducting Confined Electron Devices for Possible Application as

... Shematovich, V.I . ... Shematovich, V. I. ; Bisikalo, D. V.; Marov , M. Ya . ... Shematovich, V.I., Bisikalo, D.V., and Gerard J.-C. Superthermal particles in the planetary atmosphere. ... Shematovich, V.I., Bisikalo, D.V., and Gerard, J.-C. The thermospheric odd nitrogen photochemistry : role of non-thermal N(4S) atoms (abstract) . ... Geophys ., ... Gerard, J.C., Shematovich, V.I., and Bisikalo, D.V. Effect of hot N( 4S) atoms on the NO solar cycle variation in the lower thermosphere (abstract) . ...

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... Во-первых, даже при нулевой температуре внутренняя энергия электронов не равна нулю, и газ имеет вполне конечное давление. Во-вторых, давление такого газа очень слабо зависит от температуры, до тех пор, пока температура не достигнет определенного уровня, при котором газ уже нельзя рассматривать как вырожденный ( температура вырождения ). ... Таким образом, давление зависит только от плотности и растет с плотностью существенно быстрее, чем для идеального газа. ...

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• degenerate electrons gamma

The AstroGuide . ... AstroGuide | ... AstroGuide Listing . Login . See many more Astronomy Listings by: Category or Alphabet . ... Listed Since December 26, 1998 . ... 7-812) 552-5754 . ... Web Site . ... Web . www.astronomy.net . About Astronomy Net | Advertise on Astronomy Net | ... Unless otherwise specified, web site content Copyright 1994-2016 John Huggins All Rights Reserved . dbHTML," "AstroGuide," "ASTRONOMY.NET" & "VA.NET" . are trademarks of John Huggins ...

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• Moon, Planets And Aurora, Oh My! - an Astronomy Net Article