Static Fourier spectrometers are often used for spectral measurements of the ionosphere emissions. There are two main advantages of Fourier spectrometers (FS) - large geometric factor and high spectral resolution; these parameters are two orders better than for grating spectral instruments. ... In scanning Fourier spectrometer optical and electric modulation of signal is used to avoid this problem, for static Fourier spectrometer there are no such ways. ...

... A comparison of the computed and experimental relations F max ( H), as well as comparison of drift scans of point sources across different horizontal cross-sections of the BP with the corresponding computed cross-sections were made. ... The drift scans of the point source 3С84 (H=87 o ) at the wavelength 7.6 cm across the horizontal cross-sections of the BP (black lines) and the computed horizontal cross-sections of the BP corresponding to them (red lines). ...

Gamma-rays from the GC . M.Chernyakova (DIAS), D.Malyshev (DIAS), F.Aharonian (DIAS, MPIK), R.M.Crocker(MPIK), D.I.Jones(MPIK) 1 10°x10° Count and TS maps (>300 GeV) Gamma-rays from the GC 2 TS maps of the GC at different energies 300 MeV ­ 3GeV 3 GeV ­ 30 GeV 30 GeV ­ 300 GeV Gamma-rays from the GC 3 4 Gamma-rays from the GC Lightcurve 5 Gamma-rays from the GC Source spectrum Model X-ray and low-energy emission come from the central object, probably SMBH accretion disk. ...

In calculating the NIFS sensitivity, we adopt a read noise of 5 e - , a dark current of 0.01 e - s -1 pix -1 , and a maximum exposure time of 3600 s. Grating . ... e/pix) . ... OH Cont. (e/pix) . ... NIFS should achieve signal-to-noise ratios of ~ 10 per spectral pixel in a 0.1" 0.1" aperture for single 1800 s exposures on uniform, extended, continuum sources with surface brightnesses of J = 15.4, J = 15.0, H = 14.8, and K = 13.5 mag arcsec -2 using the Z , J , H , and K gratings, respectively. ...

Peremennye Zvezdy", . ... Star Name: . 1RXS J190331.9+104353, EQ J190331.9+104353.1 . ... This variable star was discovered by Barsukova (2004) in the vicinity of the hard X-ray source and microquasar candidate 1RXS J190333.1+104355 (Paredes et al., ... Our variable star is located outside the error circles of these sources but very close to the western border of the ROSAT X-ray error circle. ... The light curve shape is typical of Mira Ceti type stars. ... Light Curve . ... Data Source . ...

... I am involved in Project Astro, a program to bring astronomers into public schools to assist with teaching students about science and astronomy. ... While there are all sorts of scale model of the Solar System type exercises ( Mitchell Charity's page has a good listing of what's available), none were really tailored towards discovering the spatial relationships of the planets, and in a way that could be done at night as part of a Star Party. ...

IACETH Institute for Atmospheric and Climate Science Road traffic emissions in ff Switzerland: Results from the Results Gubrist tunnel Institute for Atmospheric and Climate Science (IACETH), Swiss Federal Institute of Technology ZЭrich (ETHZ) UniversitДtstrasse 16 CH-8092 ZЭrich, Switzerland email: Johannes.Staehelin@env.ethz.ch Johannes Staehelin 1. ... Road traffic emission models and Road emission tunnel measurements 3. ... Measurements of the Gubrist tunnel Measurements of 5. ...

... Space Physics . ... Real-Time Space Weather Data Sources . ... Space Physics Observatories . ... Solar Observatories . ... Space Physics Research Centers . ... Other Lists of Space Weather Space Physics Links . ... Current Solar Images (from Solar Data Analysis Center ) . ... Exploring Space: Space Weather (K-12, General) . ... Solar/Space Weather (General) . ... SPIDR: Space Physics Interactive Data Resource . ... Space Weather Resources at Space Science Data Operations Office (SSDOO) . ...

MATHEMATICAL MODELING: . ... This model is developed on the base of the probabilistic description of the collisional aeronomical processes and is realized on a computer as the numerical system (stochastic model). ... Shematovich, V.I., Bisikalo , D.V.             Nonequilibrium processes in the planetary and cometary atmospheres. ... In Russian) . ... Piarnpuu , A. A.; and Shematovich, V. I.       Construction of structural stochastic models of collision processes in rarefied gas media (abstract) . ...

... Exams and Homework . ... Local Astronomy Stuff . ... Jeff Willick's Cosmology from Stanford . Some good Internet tutorials on Cosmology . A good primer on different Galaxy types . Some Essays by Joe Silk - good information . ... First Homework Assignment (Due June 30) . Second Homework Assignment (Due July 21) . Third Homework Assignment (Due August 4) . Final Exam now Available until August 11 . This Search Engine is Best for Homework . ...

... The results of long-term monitoring of Gigahertz-Peaked Spectrum sources were found the statistically significant differences (0.05 significance level) in the high-frequency spectral index distribution between subgroups of galaxies and quasars. ... This can mean that the electron energy distribution for GPS galaxies is steeper than for GPS quasars. ... The first area corresponds to GPS-quasars that have statistically larger value of redfhift, second area corresponds to GPS-galaxies. ...

... FTP access the basic models is here . ... Below, we put short descriptions of the used SED models for the photometric redshifts providing by the current server . ... The uniqueness of this model consists in expanding to the near IR (NIR) of Rocca-Volmerange and Guiderdoni's (1988) atlas of synthetic spectra with a revised stellar library, which includes parameters of cool stars. ... Homepage of the GISSEL model). ... Another model used earlier is the model of synthetic spectra of Poggianti (1997). ...

Stellarium 0.12.3 . ... Renderer . FileљStructure . ... core . ... StelTextureBackend.hpp . ... 26 љ #include <QString> . ... 56 љ inline QString textureStatusName( const TextureStatus status) . ... 118 љ const QString& getName () const . ... 132 љ invariant(); . ... 143 љ const QString& getErrorMessage () const . ... 151 љ const QString path ; . ... 157 љ StelTextureBackend ( const QString& path ) . ... 200 љ void errorOccured ( const QString& error) . ... 232 љ void invariant() const . ...

... Visited 8168 times - Selected 52 months ago . ... Visited 4099 times - Selected 51 months ago . ... Visited 5378 times - Selected 51 months ago . ... Visited 4661 times - Selected 51 months ago . ... Visited 5590 times - Selected 51 months ago . ... Visited 5997 times - Selected 51 months ago . ... Visited 5377 times - Selected 51 months ago . ... Visited 9073 times - Selected 52 months ago . ... Visited 5524 times - Selected 52 months ago . ... Visited 4289 times - Selected 183 months ago . ...

The Earth's magnetosphere global structure is conditioned by the interaction of the Solar wind and Earth's magnetic field. ... Solar wind (SW) - the region outside BS; . ... Auroral field lines (AUR) region - the funnel-shape cavity restricted by the geocentric distance of the order of 6 RE, between surfaces formed by magnetic field lines emerged from the polar and equatorial OVAL borders; . ... Fairfield D.H., Average and unusual location of the Earth's magnetopause and bow shock, J. Geophys. ...

Optical characteristics of non-spherical scatterers . ... A list of reviews (under preparation) and links to the databases of Hovenier's and Gustafson's groups on the visible/infrared and microwave light scattering experiments, respectively. ... Light scattering codes . ... Benchmarks in optical properties . Tables of different light scattering characteristics carefully calculated by different codes (methods). Dependence of optical properties on scatterer parameters . ...

home education > activities . ... Quick math activity that asks students to calculate scale models of a binary star system with a black hole in it. [h] . ... Students use a radiometer and a light bulb with a dimmer switch to make connections between the temperature, color, and radiation output of a star. ... This demonstration, similar to the above, from the Exploratorium Snack-book of science activities, lets students demonstrate how molecules scatter light and change the colors of the beam. [m,h] . ...

... Tonight's Sky . ... The Magazine . ... Observing . ... Gravitational wave search provides insights into galaxy evolution and mergers . ... The double star 54 Leonis, spiral galaxy NGC 3198, and emission nebula NGC 3199 . ... Astronomy for Kids . ... January 2006 resources . FROM THE January 2006 ISSUE . ... Get instant access to subscriber content on Astronomy.com! ... Receive news, sky-event information, observing tips, and more from Astronomy's weekly email newsletter. ... Astronomy Magazine . ...

... G.P.Panasenko (J.-V.Poncelet, Moscow) Multiscale problems: junction of models of different dimension, applications to hemodynamics. ... Gubkina , Moscow, Russia . ... The workshop is devoted to an important trend in mathematical modeling, the multiscale methods and its applications in biology and medicine. ... It was organized in the frame of the thematic year on the multiscale methods and modeling in biology and medicine organized by the Russian-French laboratory J.-V.Poncelet. ...

... 8, ``Celestial Mechanics'', 2002 High--accuracy modelling of the Earth's gravitational potential from GOCE satellite gradiometry mission M. S. Petrovskaya, A. N. Vershkov Pulkovo Observatory, St. Petersburg, Russia The Earth's gravitational potential is presented in form of a spherical harmon­ ic series with the coefficients C n;m which are the fundamental dynamical constants for the Earth. The set of C n;m for degree 0 џ n џ N and order jmj џ n consti­ tutes a geopotential model. ...