spaceweb@oulu.fi - last update: 1 July 1998, 1200 UT (RR) . ... Relates the wave number k to the wave frequency. ... From the equation of motion , m d v /dt = q( v x B ) one can calculate that, in a presence of magnetic field B , a charged particle is accelerated in direction perpendicular to both v (perp) and B . ... The angle a between magnetic field B and velocity vector of a charged particle, v ., i.e., sin a = v(perp) / v(total), where v(perp) refers to the velocity component perpendicular to B . ...

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• Principles of the Magnetic Trapping of Particles
• Discontinuities and shocks [Oulu]
• Energetic Particles

Next: Bivariate polynomial interpolation Up: Echelle Spectra Previous: Removal of particle . The estimation of the background is one of the critical points in the reduction of echelle spectra for two reasons. ... diffuse light in the interorder space coming from adjacent orders. sky background spectrum . ... These locations are defined when performing the order definition (command DEFINE/ECHELLE or DEFINE/HOUGH ) and can be displayed by command LOAD/ECHELLE . ... Sky background definition . ...

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• Order definition: Method Hough
• Removal of particle hits
• X-ray binaries with relativistic jets -- microquasars

... The FOC suffers from various types of background, the most important of which are thermal electrons, Cerenkov radiation from high energy particles, geocoronal emission lines, zodiacal light, and light scattered within HST from the bright Earth or Moon. ... From on-orbit measurements using the f /96 camera, the former background has been found to vary with solar zenith distance (ZD); see Sections 6.4, 6.5, and 7.0 of the FOC Instrument Handbook , version 7.0, for more details. ...

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• FOC Data Handbook
• CLASH: An Innovative Survey to Place New Constraints on the Fundamental
• Measurement of the C/C Ratio in Planetary Nebulae

... Energy . ... The free ions and electrons in a plasma behave the same way. Knowing the temperature of the high atmosphere of Earth, or that of the Sun, we can calculate energies expected of ions and electrons found there. However, ions and electrons actually observed in space are often much, much more energetic, and may move at a respectable fraction of the velocity of light (300,000 km/sec or 186,000 miles/sec). ... Typical energy of an electron in the polar aurora. 40,000 ev . ... 50,000 ev . ...

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• (Q-4) Planck's constant: Radiation from Hot Objects
• Motion in a Circle
• The Motion of Magnetically Trapped Particles -- History

... 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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• Database of Optical Properties -- Level: subsubpage
• Linear polarization: wavelength dependence
• Polarization properties (transmitted radiation)

Next: Displaying Images Up: Spectral Line Data Reduction Previous: Computation . A few comments are in order when using the imaging task, invert , to create spectral cubes (more information on invert can be found in Chapter 13 ): . To conserve space, invert produces a single beam dataset for all planes of a cube. ... That is, invert usually insists that no channels of a spectrum are flagged before that spectrum can be used for imaging. ... The slop keyword takes two values. ... VELSW . ...

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• Programme - Abstract
• Coherence in the radio emission
• Australia Telescope National Facility

So the evidence for Dark Matter is fairly overwhelming. ... Theory: if the Universe is closed then all the luminous matter seen in galaxies contributes only 0.5% of the mass required to eventually halt the expansion . ... This means that galaxies are surrounded by dark matter halos which trapped baryonic gas (e.g. hydrogen) and turned it into stars. ... WIMPS - weakly interacting massive particles created in the extremely early universe . ... Theory 99% of the Universe is Dark Matter . ...

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• Thermal History of the Universe
• Cosmological Issues for Theorists
• Constrains on Dark Matter

... The group of radio emitting X-ray binaries (XRB's), such as SS433, Cyg X-3, LSI , Cir X-1, etc., exhibit highly variable bursting radio emission interpreted as synchrotron radiation from relativistic electrons. ... In this paper, a numerical model for radio outbursts in XRB's is developed. The model is based on a process of continuous injection of relativistic particles into a spherical expanding plasmon, ejected following a transitory supercritical accretion event onto the compact star. ...

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• PPEUC Programme - Cosmic Microwave Background Workshop
• Abstract

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. ...

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• Interacting Electrons in Normal Metals

... The spatially resolved structure near the hydrogen emission H line was found in the spectrum taken with the BTA/SCORPIO in June, 2013. ... The fragment of the Nova V1494 Aql spectrum is shown in Fig.1. ... The Nova V1494 Aql has passed the stage of the supersoft X-ray source (SSS) in the period between 218 and 516 days after the visible light maximum (Schwarz et al., ... The spectrum of Nova V1494 Aql taken on 2013 June 9 with BTA/SCORPIO . ... The vertical lines are the lines of night sky emission....

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... Bad Astronomy . ... Mad Science . ... Keep Bad Astronomy close to your heart, and help make me filthy rich. ... I read in your archives that: "The black hole will slowly radiate away?. ... Since this represents energy leaving the black hole, it will slowly release all of its mass in this fashion." ... If a pair of particles is produced which gets its rest mass energy from the gravitational field of the hole, and one particle is lost, then there will be a decrease in the energy of the hole. ...

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... Program of the Course of Radio Astronomy . Moscow State University , Physics Department , Astronomy Division , 4 th year, 60 hours in total) . ... Molecular maser emission. ... The emission of the interstellar neutral hydrogen. ... Pacholczyk, A. G. Radio Astrophysics, W. H. Freeman & Co., ... Frontiers of Astrophysics, Avrett, E. H., ed., Harvard University Press, Cambridge, Mass., ... Kaplan, S. A., Pikelner, S. B. The Interstellar Medium, Harvard University Press, Cambridge, Mass., ...