... In electron-positron colliders, effect of the lattice modification by opposing bunch focusing on the equilibrium radiation emittance is important at high values of the space charge parameter, so one should correctly evaluate this dynamic radiation emittance of the weak beam, which may differ a lot from the nominal emittance, already in the linear beam-beam force model. ... The linearized beam-beam force is equivalent to focusing insertion in linear lattice of the collider. ...

http://hubblesite.org/newscenter/archive/releases/2002/24/image/a/ A composite image of the Crab Nebula showing the X-ray (blue), and optical (red) images superimposed. The size of the X-ray image is smaller because the higher energy X-ray emitting electrons radiate away their energy more quickly than the lower energy optically emitting electrons as they move.

Astronotes Armagh Planetarium's Stellar Blog! ... Space Flight . ... This fluffy pink blob is the star-forming region LHA-120-N 11 in the Large Magellanic Cloud some 170 000 light years from the Sun. N 11 (occasionally called the Bean Nebula) is about 1000 light years across. ... Hydrogen is the main element making up such clouds. ... There is a certain amount of energy associated with the electron?s orbit and there are a series of possible orbits the electron can be in around the nucleus. ...

... Информация Руководство и преподаватели Володкин Борис Олегович . ... Публикации . ... Control of transverse mode spectrum of Novosibirsk free electron laser radiation // Applied Optics. ... Агафонов А.Н. , Володкин Борис Олегович , Кавеев А. К. и др. ... Agafonov A.N. , Volodkin B.O. , Kachalov D.G. и др. ... Агафонов А.Н. , Володкин Б.О. , Кавеев Андрей Камильевич и др. ... Agafonov A.N , Volodkin B.O , Volotovsky S.G и др. ... 2013. ... 2012. ... Володкин Б.О. boris-volodkin@yandex.ru . ...

... RECOMMENDED VALUES OF PHYSICAL CONSTANTS AND CONVERSION FACTORS. ... This reference must be included when these constants are used in a context where their full accuracy is important. ... elementary charge (of proton) . ... gravitational constant . ... unified atomic mass constant . ... of electron . ... of proton . ... Planck constant . ... Rydberg constant, m 0 2 m e e 4 c 3 /8h 3 . ... fine structure constant, m 0 e 2 c/2h . ... Bohr radius, h 2 ( pm 0 c 2 m e e 2 ) . ... Bohr magneton, e h /2m e...

Определение полного электронного содержания ионосферы по наблюдениям двухчастотного GPS-приемника . ... Институт прикладной астрономии РАН, г. Санкт-Петербург, Россия Аннотация: . Разработана программа, получающая полное электронное содержание иносферы по фазовым и кодовым измерениям спутников GPS, сигналы которых принимаются на станциях сети IGS. ... GPS, дифференциальное кодовое смещение, total electron content, ионосферные карты. ...

... 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) . ...

... We present a new method of the ionospheric irregularity investigation based on using of temporal structure function of the phase of the vertical sounding signal. ... Theoretical relation between structure functions of the phase variations and the irregularities can be obtained in the framework of a simple model of frozen irregularity horizontal drift. ... structure function ?? ... The irregularity structure function can be easily calculated if the irregularity spatial spectrum is known. ... Figure 1...

GPS GP-37 () GPS . ... GPS- (John A. Klobuchar) [3]. ... GPS GP-37, Furuno. ... Datta-Barua S., Doherty P.H., Delay S.H., Dehel t., Klobuchar J.A. Ionospheric scintillation effects on single and dual frequency GPS positioning. ... Air Force Surveys in Geophysics, No. ... Klobuchar, J. A. Ionospheric Time-Delay Algorithm for Single-Frequency GPS Users. ... Global Positioning System Standard Positioning Service (SPS) Signal Specification. 2nd Edition. ... Klobuchar, J. A. Ionospheric Effect on GPS. ...

Towards celestial sources above 1 THz with a heterodyne receiver based on a hot-electron bolometer mixer Sergey Ryabchun, Ivan Tretyakov, Matvey Finkel, Natalia Kaurova, Boris Voronov and Gregory Gol'tsman HOT-ELECTRON BOLOMETER (HEB) MIXER Scient ific and Educatio nal Radiophysics Center Mo scow State Pedago gical University Mo scow, Russia FIRST GROUND-BASED OBSERVATION WITH HEB MIXERS BEYOND 1 THz Submillimeter Telescope ...

It is difficult to do experiments with K?12 students which demonstrate that light involves electric and magnetic fields. ... For advanced students, these experiments can show how light reveals the structure of atoms. ... Visible light penetrates glass. ... Static, unchanging magnetic fields don't spawn electric fields, and steady electric fields don't create magnetic fields. ... Light and other forms of electromagnetic radiation contain both electric and magnetic fields that oscillate in strength. ...

. Observational data . • . Geomagnetic variations in Yakutsk . • . Cosmic ray variations in Yakutsk and Tixie Bay . • . Riometer data for Tixie . • . Satellite monitoring of surface . • . Space weather forecast . • . Ionospheric Station Yakutsk .

. Ionosphere - the high layers of atmosphere, begining with 50 - 80 km. There are a lot of ions and electrones. Ionosfera greatly influences the radiowaves spreading. Back .

... PROGRESS M-59 CARGO VEHICLE . 01/18/2007 Baikonur Cosmodrome. Progress M-59 transport cargo vehicle was launched to the International Space Station (ISS) at 05:12:13 Moscow time. ... Soyuz-U launch vehicle with Progress M-59 transport vehicle is installed on the launch pad. ... Photo-report . ... The decision was made to roll out Soyuz-U launch vehicle with Progress M-59 transport vehicle to the launch pad. ... Designers inspection of the Progress M-59 cargo vehicle was completed. ...

... Первая десятка | ... Первая десятка "Русского переплета" Темы дня: . ... PET: A Proton/Electron Telescope for Studies of Magnetospheric, Solar, and Galactic Particles. ... Geosciencies and Remote Sensing, 31, 535, 1993. ... 1 D T distributions, obtained in GAMMA-1, SAMPEX PET, MARIA-2 and ELECTRON experiments (M>4, D L< ± 0.1). Fig.2 D T distribution, obtained on board SAMPEX (M>5, D L< ± 0.05) . ...

... Горизонты науки о Вселенной (Модераторы: Дмитрий Вибе , AlAn ) ? Эддингтон А. "Истолкование волнового уравнения на основе симметрии" . ... Eddington A.S. A symmetrical treatment of the wave equation // Proc. Roy. ... В декабре 1928 г. А.Эддингтон в "Proceedings of Royal Society" опубликовал статью, в которой представил уравнение Дирака для движения электрона на основе 16-мерной геометрии [11]. ... При этом Эддингтон наложил дополнительное требование принципа запрета Паули. ...

... Ciel Espace, le magazine qui vous guide toujours plus loin . ... Ciel Espace, nouvelle formule, c'est . des actualit†йs . ... des interviews, des portraits . les plus belles images de l'Univers d†йcrypt†йes pour vous . ... des pages consacr†йes †а la publication de vos photos Mais c'est aussi une vraie communaut†й avec laquelle partager votre passion et nourrir votre curiosit†й. Accueil Grail voit sous la surface de la Lune . ... 06/04/2016 - Le journal de bord de Thomas Pesquet (21) . ...

... 13, Moscow 119992, Russian Federation, e-mail: busarev@sai.msu.ru; 2 Research Institute Crimean Astrophysical Observatory, p/o Nauchnyi, Crimea 334413, Ukraine, e-mail: prok@crao.crimea.ua Summary: We propose a combined method of astronomical investigations of small or distant planets incorporating registration of a set of integral spectra of an object and their frequency analysis. ... An application of the method is shown on example of asteroid 21 Lutetia. ... 6] Busarev V. V. (2002), Solar Sys. ...

arxiv:1008.3999 Наблюдения космических электронов на Fermi LAT на энергиях от 7 ГэВ до 1 ТэВ (Fermi LAT observations of cosmic-ray electrons from 7 GeV to 1 TeV) . Authors: Fermi LAT collaboration . ... Authors: Andrey E. Vladimirov et al. обзор arxiv:1008.5032 Релятивистская прецессия спина в двойных пульсарах (Relativistic spin-precession in binary pulsars) . Authors: Michael Kramer . ... обзор arxiv:1008.2144 Массивные звезды и их сверхновые (Massive Stars and their Supernovae) . ...

... Submitted by Al Takeda on 12/20/2011 12:01:50 . California Nebula . The California Nebula (NGC1499) is an emission nebula in the constellation Perseus that is more then 2.5-degrees in size. ... The nebula is about 1000 light years away. 5nm Narrowband filters; H-alpha: O-III: S-II - 60: 60: 80 minutes x 10 minute subframe, Total= 3-hrs 20-minutes, binned 1x1. ... Copyright (c) Amateur Telescope Makers of Boston, Inc. ...