... Romanyuk , V . ... Instrumental circular and linear polarization is shown to be insignificant. ... It is planned to be used for determination of a magnetic field structure of peculiar stars, and dipole orientation, for study of circular and linear polarization wide depressions within 4200 - 5200 A being characteristic for magnetic star spectra and also for other spectropolarimetric investigations of various objects in narrow (dozens of A) and wide (hundreds of A) spectral regions. ...

... 18-1 74 40.5 0.52 Cas A . 18-1 75 38.5 0.49 Cyg A . ...

... Dept. for Physics of Planetary Systems . ... Laser station . ... Built a network of laser stations (LLS), radio (GNSS) satellites and observation radiointerferometrychnyh observations of quasars (VLBI) ( YA.S. Yatskiv, Medvedsky MM, AA Pace, EE Volvach, YL Kokurin in collaboration with workers in other entities) . ... БЂў Laser station observation satellites is the global network of service stations of the International Earth rotation and conducts active surveillance for international programs. ...

GEOMAGNETIC POLAR CAP (PC) INDEX The PC-index is a fifteen-minute index for magnetic activity in the (P)olar (C)ap. It is based on data from a single nearpolar station, and aimed to monitor the polar cap magnetic activity generated by such solar wind parameters as the southward component of the interplanetary magnetic field (IMF), the azimuthal component of the IMF (By), and the solar wind velocity (v). ... 1988), Vennerstrom (1991), and Vennerstrom et al. 1991). ...

... Future seminars . ... Within the framework of the " Space weather " program, 25-year sets of observations of solar x-ray radiation, measurements of parameters of plasma and a magnetic field in the solar wind and variations of Dst index are analyzed with the purpose of revealing the factors rendering the greatest influence on development magnetospheric storms. ... The data on the other type of solar activity - coronal mass ejection (СМЕ) - cover only small part of a researched interval. ...

... More on 51 Peg: . The discovery of a Jupiter--mass planet in orbit around the solar--type star 51Peg has been reported by Michel Mayor and Didier Queloz (Geneva Observatory) on October 6th at the 9th Cambridge workshop on "cool stars, stellar systems, and the sun" held at Florence (Italy). ... Recall that the measurements of radial velocity only yield v sin i which in turn gives us M sin i. For most values of i, sin i will be greater than 0.5 and this gives a mass estimate of 0.5 Jupiter masses. ...

... 05/09/2013 Galaxy Evolution over Five Decades - Cambridge 2013 Nuclear activity and environment Effect of environment on AGN is not completely clear yet. ... 05/09/2013 Galaxy Evolution over Five Decades - Cambridge 2013 Effect of the mass Mass slices ­ optical and radio AGN overall interaction one-on-one interaction relative location 05/09/2013 Galaxy Evolution over Five Decades - Cambridge 2013 Stratified study Stratifed study that considers several strata of mass. ...

INTERELATION OF GEOMAGNETIC DISTURBANCES AND SOLAR WIND PARAMETERS Ivanov V.G., Miletsky E.V. Central astronomical observatory of RAS at Pulkovo Abstract Interrelations between characteristics of geomagnetic activity and parameters of the solar wind are investigated. ... Relatively simple relations that link variations of geomagnetic activity and solar wind parameters are found. The obtained models allow quantitative estimation of influence of the solar wind parameters upon geomagnetic activity. ...

... public class CurveFitter . ... static int . ... Field Detail public static final int STRAIGHT_LINE . ... public static final int POLY2 . ... public static final int POLY3 . ... public static final int POLY4 . ... public static final int EXPONENTIAL . ... public static final int POWER . ... public static final int LOG . ... public static final int RODBARD . ... public static final int GAMMA_VARIATE . ... public static final int LOG2 . ... public static double f (int fit, double[] p, double x) . ...

THE PARAMETERS INVOLVED IN HAPKE'S MODEL FOR ESTIMATION OF THE COMPOSITION OF THE EJECTA LUNAR TERRAINS. ... In the previous papers we were estimated the surface roughness of the ejecta lunar terrains by means comparison of the local phase function and the average integrated lunar indicatrix. ... The Hapke's theoretical model of the lunar surface reflection. ... For THE PARAMETERS INVOLVED IN HAPKE'S MODEL: S.G. Pugacheva, V.V. Shevchenko a low-albedo lunar surface parameter Bo = 1. ...

... RC0302+0455 . RC0308+0454 . ... RC0355+0449 . Radio source parameters . ... R.A.(B1950) Dec.( B1950) Freq. ... Parameters of optical candidates for identification . R.A.(J2000) Dec.( J2000) R.A.(B1950) Dec.( B1950) Magn. ... J2000) angle fwhm (X:Y) 03:08:33.98 +04:54:10.5 . ...

Reloading smiswww.iki.rssi.ru ...

The IAA RAS . ... View details . ... Observatories 'Svetloe' and 'Zelenchukskaya' participate in frequent VLBI-observation sessions organized by the International VLBI Service for Geodesy and Astrometry . ... As part of collaboration with the U. S. Naval observatory in the areas of EOP determination and analysis the USNO uses IAA RAS daily EOP data obtained from SLR and VLBI. ... The IAA RAS and the Centre National d'Etudes Spatiales carry out joint DORIS observations on the Badary observatory. ...

... Armagh Observatory, College Hill, Armagh BT61 9DG, +44 (0)28 3752 2928 . ... Measured radial velocities for the primary (full symbols) and secondary (empty symbols), phased with the orbital period of 5.9051102 0.0000023 days. ... HD 98088 is a synchronised, double-lined spectroscopic binary system with a magnetic Ap primary component and an Am secondary component. ... The magnetic field in the primary is predominantly dipolar, with the positive pole oriented approximately towards the secondary. ...

... An estimate the rotation period of cometary nuclei is important for understanding and describing the physical processes of the cometary activity. Unfortunately, the measurements of the rotation periods of the comet nucleus depend on the model assumptions and it is one of the main reasons for the scatter of the estimates given in various articles for a given comet. ... Right: the image of the comet 29P/Schwassmann-Wachmann 1 obtained at the 6-m telescope. ...

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] . ...

... 09.03.2001 . ... March 09 2001 09:00 (Moscow time) . The operations scheduled on OC "Mir" for March 8 are complete. The recent telemetry data confirmed that the complex remains pressurised, the thermal mode is normal, the onboard systems perform norminal. Enough electricity is generated to maintain the onboard systems operation and measure orbit parameters. The OC "Mir" onboard systems were checked out, orbit radio monitoring performed. Currently, the OC "Mir" is in free drift. ...

... Parameter Spec Measurement Technique: Wavelength = 355nm (Visual confirmation) Energy = 30 uJ, 160-180 mJ (4025 pulses), 40 uJ (micropulse) Pulse Duration = 10 ms (Measured at 10 ms on an oscilloscope) Micropulse Width = 70ps IR, = 50 ps UV (Autocorrelator to measure IR pulse waveform Temporal Profile - flat envelope) Measured at 10 ms on an oscilloscope. ... Burn Paper measurement) Repetition Rate = 10 Hz/402.5 MHz Oscilloscope Shot to Shot Stability = 3% RMS for pulse envelope. ...

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... A theory suggests that a certain sub-class of gamma-ray bursts all have the same absolute magnitude. ... The author claims that this absolute magnitude is so different from that in the previous sample that this must belong to a new sub-class of gamma-ray bursts. ... To do this, there needs to be some feature in their spectra which correlates with their absolute magnitude. ... Consider a telescope which is continually monitoring a star, looking for transits due to planets orbiting this star. ...