... 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? ...

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. ...

... 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 . ...

... 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 | ...

... Bad Astronomy . ... Bitesize Astronomy . ... Mad Science . ... Keep Bad Astronomy close to your heart, and help make me filthy rich. ... Although seen here on Earth, aurorae start at the center of the solar system. ... After about three days those particles get near the Earth and hit the Earth's magnetic field. ... Now these particles are moving very fast, and when they hit the air they slam into air atoms that make up our atmosphere, sometimes knocking loose more electrons. ... 2008 Phil Plait. ...

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. ...

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

... 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. ...

... 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. ...

... 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. ...

. In this false-color image, blue represents aurora emissions from hydrogen gas excited by electron bombardment, while red-orange represents reflected sunlight. NASA / JPL / University of Colorado

ION AND ELECTRON ENERGY DETECTOR PAN-2 . ... The energy and angular distributions of charged particles can bring further information on the nature and spatial scales of magnetospheres processes. ... It permits the fast measurements of energy and angular parameters of charged particles in the range 40eV-40keV. ... The sensor unit is an electron electrostatic, axially symmetrical, toroidal analyzer. ... The energy range for both types of charged particles must stepped according to the logarithmic scale. ...

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... 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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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 ...

... title=' Мягкая игрушка Aurora Юху и друзья Лев 20 см 65-215 - Aurora - AuroraЮху и друзья Лев 20 см 65-215' border='0' align='left' width='120' style='margin-right: 20px;' hspace='7' vspace='5'/> Мягкая игрушка Aurora Юху и друзья Лев 20 см 65-215 Юху, отважный лидер, добрый и справедливый. ... Длина игрушки: 20 см . Активный сабвуфер, мощность 40 Вт, динамик 165 мм, фазоинвертор, частотный диапазон 35-85 Гц, пульт ДУ, габариты 305 x 251 x 305 мм, масса 6,3 кг. Активный сабвуфер . ...

. Accretion Processes in Astrophysics . Astrophysical Flows . Astrophysics Processes: The Physics of Astronomical Phenomena . Astrophysics through Computation: With Matematica Support . Dynamics of Galaxies: Textbook . Introduction to Astromonical Spectroscopy . Rotating Relativistic Stars . The Physics and Evolution of Active Galactic Nuclei . Stellar Evolution Physics. Vol. 1 . Stellar Evolution Physics. Vol. 2 .

The CHIANTI database consists of 4 primary ASCII files for each ion in the database. contains the energy levels in cm^(-1) It includes both experimental data and theoretical values of the levels energies. References: %observed energy levels (1-24): Del Zanna, 2005, A , in press %Theoretical energy levels (1-24): Whiteford et al., 2002, J.Phys.B, 35, 3729 %observed energy levels (above ionization: 25,26,29,30,32,36,38-40): Shirai,T. et al., ...