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261. http://www.gao.spb.ru/english/as/j2014/presentations/litvinov.pdf
GRAVITATIONAL REDSHIFT EXPERIMENT WITH THE SPACE RADIO TELESCOPE RADIOASTRON Dmitry Litvinov1, Norbert Bartel 2, Alexander Biriukov3, Vladimir Kauts3, Victor Kulagin1, Valentin Rudenko1 1 Sternberg Astronomical Institute, Russia 2 3 York University, Canada Astro Space Center, Russia Journees 2014 , Saint-Petersburg , 22-24 September 2014 GRAVITATIONAL REDSHIFT Einstein, 1911: Pound, Rebka, 1960: laboratory test Journees 2014 , ... 2014, Astron. ...
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Ссылки http://www.gao.spb.ru/english/as/j2014/presentations/litvinov.pdf -- 2369.8 Кб -- 28.09.2014
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262. http://www.gao.spb.ru/english/as/j2014/presentations/brzezinski_swg2.pdf
Report on activities of the IAU/IAG Joint Working Group on Theory of Earth Rotation , Sub-WG 2 Polar motion and UT1 Aleksander Brzezinski Є Warsaw University of Technology, Faculty of Geodesy and Cartography, Warsaw, Poland Space Research ... A. BrzeziЄski n JournЄes 2014, St. Petersburg, 22ґ24 September 2014 e Theory of p olar motion and UT1 variation, long p erio ds Chen W., Shen W., 2010, New estimates of the inertia tensor and rotation of the triaxial nonrigid Earth, J. Geophys. ...
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Ссылки http://www.gao.spb.ru/english/as/j2014/presentations/brzezinski_swg2.pdf -- 81.4 Кб -- 28.09.2014
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263. http://www.gao.spb.ru/english/as/j2014/presentations/kuznetsov.pdf
Introduction Analytical approximation Numerical simulation Summary Long time dynamical evolution of highly elliptical satellites orbits Eduard Kuznetsov Polina Zakharova Astronomical Obser vator y Ural Federal University Journees 2014 22ґ24 September 2014, Saint-Petersburg usu-logo Introduction Analytical approximation Numerical simulation Summary Outline 1 2 Introduction Analytical ...
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Ссылки http://www.gao.spb.ru/english/as/j2014/presentations/kuznetsov.pdf -- 2530.6 Кб -- 28.09.2014
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264. http://www.gao.spb.ru/english/as/j2014/presentations/bell.pdf
The Future of Almanac Services An HMNAO perspective .. ... HM Nautical Almanac Office History (I) Earliest texts considered to be almanacs go back to second millennium BCE ґ hemerologies and parapegmata Babylonian, Greek and Islamic almanacs ґ zijs and tables Medieval almanacs ґ RegioMontanus (1472) HM Nautical Almanac Office History (II) Early Astronomical Ephemerides La Connaissance des Temps ou calendrier et ИphИmИrides du lever coucher du Soleil ... HM Nautical Almanac Office ...
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Ссылки http://www.gao.spb.ru/english/as/j2014/presentations/bell.pdf -- 1519.7 Кб -- 28.09.2014
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265. http://www.gao.spb.ru/english/as/j2014/presentations/filippova.pdf
... G., Filippova A.S. Presented by: Filippova A.S Achievements Ї Refined model based on the celestial-mechanics methods is presented that is a generalized version of the previously developed basic model Ї Subtle effects are qualitatively explained based on the amplitude-frequency analysis and the computer numerical modelling of the oscillatory pole motion, where the key feature is the Chandler wobble 2 Basic Model of the Polar Oscillations ...
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Ссылки http://www.gao.spb.ru/english/as/j2014/presentations/filippova.pdf -- 1324.2 Кб -- 28.09.2014
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266. http://www.gao.spb.ru/english/as/j2014/presentations/guseva.pdf
Some peculiarities of orbits of observed comets. ... Icarus, 2005 Simulation and reality Distribution of anti-perihelia of short-period comets with e 0.9 ( ecliptic coordinates ) Distribution of anti-perihelia of short-period comets with e 0.9 ( ecliptic coordinates ) Distribution of anti-perihelia of long-period comets with 0.9 e 1 ( ecliptic coordinates ) ґ ...
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Ссылки http://www.gao.spb.ru/english/as/j2014/presentations/guseva.pdf -- 1689.7 Кб -- 28.09.2014
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267. http://www.gao.spb.ru/english/as/j2014/presentations/kudryashova.pdf
... St Petersburg 23, September 2014 1 Motivation Ї Origin of Martian moons? ... Considered error sources: ґ Phobos a priori ephemerides; ґ Phobos a priori GM value; ґ measurements noise; ґ different strategies; Ї Methods: ґ real data analysis; ґ simulations. ... St Petersburg 23, September 2014 8 Simulations: sensitivity of the measurements to the a priori GM value Simulations: zero noise+ IMCCE a priori ephemerides +GMPH = 7.16 * 105 m3/sec2. ... St Petersburg 23, September 2014 14 Thank you! ...
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Ссылки http://www.gao.spb.ru/english/as/j2014/presentations/kudryashova.pdf -- 482.3 Кб -- 28.09.2014
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268. http://www.gao.spb.ru/english/as/j2014/presentations/popadyov.pdf
Some common problems in geodesy and astrometry after establishing ICRF Victor V. Popadyov, Centre de geodesie et cartographie (CNIIGAiK) Svetlana A. Tolchel'nikova, GAO Pulkovo Distribution of duties between astrometry and geodesy Ї Connection between the 2 sciences was established by the plumb-line near Earth surface Ї Astrometry : ... E. rot., pole motion). ... Radiosources are unobservable from points of geodetic net. ...
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Ссылки http://www.gao.spb.ru/english/as/j2014/presentations/popadyov.pdf -- 391.5 Кб -- 28.09.2014
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269. http://www.gao.spb.ru/english/as/j2014/presentations/sidorenkov.pdf
... The QBO period is equal to a linear combination of the frequencies corresponding to the doubled periods: of the tidal year (0.97 year ), of the regression of nodes (18.6 years ), and of the motion of perigee ( 8.85 years ) of the Earth's monthly orbit : 1 2 1 1 1 0.97 18.61 8.85 1 2.3 yr (1) In other words, the quasi-biennial oscillation of the wind direction in the equatorial stratosphere is a combined oscillation ...
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Ссылки http://www.gao.spb.ru/english/as/j2014/presentations/sidorenkov.pdf -- 623.1 Кб -- 28.09.2014
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270. http://www.gao.spb.ru/english/as/j2014/presentations/sokova.pdf
JOURNиES - 2014 The binary asteroid 22 Kalliope: Linus orbit determination on the basis of speckle interferometric observations Sokova I.(1), Sokov E.(1), Roschina E.(1), Rastegaev D.(2), Gorshanov D.(1), Balega Yu.( 2), Dyachenko V.(2) (1) Pulkovo Observatory; (2) Special Astrophisical Observatory Binary asteroid 22 Kalliope 22 Kalliope - M-type asteroid from the Main asteroid belt discovered by J. R. Hind on November 16, 1852 in the Bishop' Observatory (UK). ...
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Ссылки http://www.gao.spb.ru/english/as/j2014/presentations/sokova.pdf -- 1056.2 Кб -- 28.09.2014
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271. http://www.gao.spb.ru/english/as/j2014/presentations/tsvetkov.pdf
... Galactic coordinate system ( mas /yr) Triple index J= 10-12 UCAC4 -PPMXL m J= 12-14 UCAC4 -PPMXL m J= 14-16 UCAC4 -PPMXL m TS Par 3 2 1 N 1 1 1 2 2 2 2 2 1 1 1 2 2 2 2 2 K 0 1 1 0 1 1 2 2 0 1 1 0 1 1 2 2 L 1 0 1 1 0 1 0 1 1 0 1 1 0 1 0 1 XPM-PPMXL ... ,93 0,51 -0,14 1,93 -1,15 -2,28 -1,13 2,80 4,87 -0,31 -0,96 2,20 -0,06 -1,73 -1,70 0,09 S W V U M11,33 M23 M13 M12 M11 Expansion coefficients 10 UCAC4 -PPMXL ( mas /yr) 8 6 4 10-12 ... 10-12 Power 88.3 Magn. 12-14 Power 115.7 Magn. ...
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Ссылки http://www.gao.spb.ru/english/as/j2014/presentations/tsvetkov.pdf -- 1045.2 Кб -- 28.09.2014
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272. http://www.gao.spb.ru/english/as/j2014/presentations/zharov.pdf
... Spectral density of atmospheric pressure term around the FCN frequency Amplitude modulation of signal a(t ) A(t ) cos(0t 0 ) A(t ) A0 A cos(t ) A0 [1 m cos(t )] MA0 a(t ) A0 cos(0t 0 ) cos[(0 )t (0 )] 2 MA0 cos[(0 )t (0 )] 2 Annual variation of amplitude of S1 tide Semiannual variation K1; P1 1; 1 S1 (t ) A cos 2 f S1t B sin 2 f S1t Amplitude modulation of complex signal P 430 (410; 480) f 1.002324 (1.002439; 1.002083) f modulation (0.000115 0.000241) Pmodulation (8700 6100) 18.6 years? ...
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Ссылки http://www.gao.spb.ru/english/as/j2014/presentations/zharov.pdf -- 1274.6 Кб -- 28.09.2014
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273. http://www.gao.spb.ru/english/as/j2014/presentations/bizouard.pdf
... 1 Least square fit over 6 year sliding window Gabor transform Expected ratio of () = - ~6 around 7 d i Synthesis Ї NIB pressure term O1 explained by tidal equilibrium model: clearly a lunar effect Ї At 13.6 d expected ratio works for IB (over continents) pressure term ; at 7 d expected ratio works for NIB (full) pressure term Ї Proportionality wind / pressure term is consistent with 2 facts Lunar tesseral ...
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Ссылки http://www.gao.spb.ru/english/as/j2014/presentations/bizouard.pdf -- 1255.3 Кб -- 28.09.2014
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274. http://www.gao.spb.ru/english/as/j2014/presentations/ferrandiz_wg.pdf
Report on the activities of the IAU/IAG Joint Working Group on Theory of Earth Rotation JosИ M. FerrАndiz and Richard S. Gross JSR 2014, St. Petersburg, 23 September IAU/IAG JWG on Theory of Earth Rotation 2 Introduction: purpose of the IAU/IAG JWG_ThER Ї The International Association of Geodesy (IAG) and the International Astronomical Union (IAU) set up a new Joint Working Group on Theory of Earth Rotation in April 2013. ... Precession/Nutation (Chair: Juan Getino) 2. ...
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Ссылки http://www.gao.spb.ru/english/as/j2014/presentations/ferrandiz_wg.pdf -- 451.7 Кб -- 28.09.2014
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275. http://www.gao.spb.ru/english/as/j2014/presentations/galushina.pdf
Galushina T., Bykova L., Letner O., Baturin A. Tomsk State University Russia 1 Investigation Dynamics Asteroid of of 2 Solving problems construction of numerical model of asteroid motion with account chosen perturbed factors; asteroid orbit improvement according to positional observations; construction of initial probabilistic domain by linear and nonlinear methods; study of evolution of initial probabilistic domain; revealing of ...
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Ссылки http://www.gao.spb.ru/english/as/j2014/presentations/galushina.pdf -- 1658.2 Кб -- 28.09.2014
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276. http://www.gao.spb.ru/english/as/j2014/presentations/heinkelmann_swg3.pdf
... Status of the numerical solutions and validation 2. ... Coupling of "solid" Earth components, e.g. core ґ mantle (Dehant et al.) ... Consistent relativistic formulation of Earth rotation (Gerlach, Klioner, Soffel) Status of the numerical solutions - 2 Ї The results from numerical solutions suffer from ґ Simplified solid Earth models ґ Incomplete Earth system models or neglecting of certain parts or neglecting of certain coupling mechanisms ґ Methodological limitations of computations...
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Ссылки http://www.gao.spb.ru/english/as/j2014/presentations/heinkelmann_swg3.pdf -- 333.2 Кб -- 28.09.2014
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277. http://www.gao.spb.ru/english/as/j2014/presentations/huang.pdf
Do we need various assumptions to get a good FCN? A new multiple layer spectral method Cheng-li HuangMian Zhang Shanghai Astron. ... No FCN ! ... FCN,FCN,FCN.. Multiple layer spectral method (MLSM) + Linear Operator Method (LOM) Finite Element Method (FEM) Ї Ї Traditional approach solves one order ellipsoid only. ... Main Idea of FEM Boundary Surface could be described as: Let's consider how to solve the dynamic equation: Traditional Approach: Equivalent Spherical Domain . ...
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Ссылки http://www.gao.spb.ru/english/as/j2014/presentations/huang.pdf -- 1455.6 Кб -- 28.09.2014
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278. http://www.gao.spb.ru/english/as/j2014/presentations/soffel.pdf
Work related with IAU C52: RIFA M.H. Soffel and W. Han Les Journees 2014, St. Petersburg, September 22 Main work - ecliptic in a relativistic framework - fully documented relativistic VLBI model Related work - the post-linear metric (PPN-metric for light rays) - models for bodies with higher spin-multipole moments Les Journees 2014, St. Petersburg, September 22 Ecliptic IAU 2006 Resolution B1: Recognizing 2. the need for a definition of the ecliptic for both astronomical and civil purposes .. ...
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Ссылки http://www.gao.spb.ru/english/as/j2014/presentations/soffel.pdf -- 494.3 Кб -- 28.09.2014
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279. http://www.gao.spb.ru/english/as/j2014/presentations/tercjak.pdf
... 24-Sep-14 JOURNиES 2014 Investigation Ї checking possibility of nutation rates estimation based on RLG observations simulation level Ї combination of simulated RLG data with real VLBI data Ї comparison of estimates based on real RLG data (Wettzell) with results of simulation 24-Sep-14 JOURNиES 2014 Simulation ... 10-8) 24-Sep-14 JOURNиES 2014 Simulated data + VLBI (ac. lev. ...
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Ссылки http://www.gao.spb.ru/english/as/j2014/presentations/tercjak.pdf -- 1523.5 Кб -- 28.09.2014
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280. http://www.gao.spb.ru/english/as/j2014/presentations/yagudina.pdf
Institute of Applied Astronomy Russian Academy of Sciences Planned LLR station in Russia and its impact on the Lunar Ephemeris Accuracy M.V. Vasilyev(1), E.I. Yagudina (1), Jean-Marie Torre(2), Dominique Feraudy (2) (1) Institute of Applied Astronomy, Saint-Petersburg, Russia (2) Universite de Nice Sophia-Antipolis CNRS UMR 7329 OCA Geoazur Caussols, France. 22-24 September 2014,Journees 2014,Planned LLR station in Russia and its impact on the Lunar Ephemeris Accuracy ? Yagudina et all. ...
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Ссылки http://www.gao.spb.ru/english/as/j2014/presentations/yagudina.pdf -- 764.8 Кб -- 28.09.2014
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