... Vol. 32, no. 2, 2012, 643 ­ 656; 2) On connectedness of chaotic sections of some 3-periodic surfaces, Ann. ... 43, 2013, 253 ­ 271; 3) On typical leaves of a measured foliated 2-complex of thin type (with Ivan Dynnikov), to appear in Amer. ... 2); 4) Polygonal billiards with one sided scattering (with Serge Troubetzkoy), to appear in Annales de l'Institut Fourier; 5) On the Hausdoff dimension of the Rauzy gasket (with Artur Avila and Pascal Hubert), arXiv: 1311.5361, submitted. ...

To appear in "Fourth Workshop on Robotic Autonomous Observatories (2015)"RevMexAA(SC) METEOR OBSERVATIONS WITH MINI-MEGATORTORA WIDE-FIELD MONITORING SYSTEM S. Karpov, 1, 3 N. Orekhova2 G. Beskin, 1, 3 A. Biryukov3,4 S. Bondar,2 E. Ivanov,2 E. Katkova,2 A. Perkov, and V. Sasyuk3 RESUMEN 2 Favor de prop orcionar un resumen en espanol. ... The faintest detected meteors has the peak brightness about 10 mag, while the ma jority - from 4 to 8 mag. ... 2010; Karpov et al. 2013; Beskin et al. ...

... 24a.The Rotating Earth . ... He projected the Sun's magnified image from his telescope upon a flat white surface, and observed it there. ... The Sun's average distance from Earth, also known as the "astronomical unit" (AU), is about 150 million kilometers (93 million miles), but measuring that distance is not easy. ... Above that came the solar corona ("crown"), glowing tufts that faded into the distance, though time exposures with sensitive cameras managed to trace them to several solar radii. ...

... The discovery of this radiopulsar is potentially important not only for confirming the theory of evolution of NS, but also for understanding processes occurring in stellar winds   from normal stars. After all, a radiopulsar orbiting in the semi-transparent stellar wind of a normal star is a sort of probe scanning an inhomogeneous plasma by pulsed radiation (Lipunov and Prokhorov, 1984)[ 110 ]. ... 1) absorption of radio waves (light curve); . ... This object is a radiopulsar orbiting a Be-star. ...

Irregular phenomena in the Earth Pole oscillation process and temporal variations of geopotential Valery Bondarenko, Vadim Perepelkin s The observed irregular phenomena in the Earth Pole oscillation process are very variety. ... These phenomena indicated in the IERS data are the "abnormal" fluctuation of the Earth Pole coordinates which owing to changing of the geodynamical parameters gives negative result in interpolation and forecast of the first approximation mathematical model. ... Fig. ...

Subatomic resolution on Cu(014)-O . 3nm x 3nm STM image of the Cu(014)-O 0.5ML surface measured with MnNi tip. ... This result has been discussed in Phys. Rev. Letters, 98, 206101 (2007) (A.N.Chaika, V.N.Semenov, S.S.Nazin, S.I.Bozhko, S. Murphy, K. Radican, I.V.Shvets, "Atomic Row Doubling in the STM Images of Cu(014)-O Obtained with MnNi Tips"). Image courtesy of A.Chaika. The image was measured in constant current mode using RT STM GPI-300. Copyright ИФТТ РАН, ЛСПП, 2006-2007 . ...

Weekly Bulletin on Solar and Geomagnetic Activity Highlights on 03 - 09.08.2015, Forecast on 10 - 17.08.2015, Carrington Rotation 2166, 2167 (14,84.07; 07,30.09.2015) SUNSPOT-FORMING ACTIVITY OF THE SUN WAS AT THE AVERAGE LEVEL. ... Therefore all energy of the emerging magnetic fluxes was realized in fla- res of class C and S (36 for three days). ... ACCORDING TO THE DATA FROM SOHO AND STEREO CORONOGRAPHS, >35 CMEs ONE WAS "PARTIAL HALO II" TYPE (angular width 90 - 180 deg.) HAVE BEEN OBSERVED. ...

... SUNSPOTS: The surface of the Sun, called the photosphere, is at a temperature of 5800 degrees Kelvin. Sunspots are cooler features (3800 degrees Kelvin) wandering across the disk of the Sun that have been observed since ancient times. ... Solar activity is directly related to the frequency of sunspots. ... ROTATION: The sun does not rotate as a rigid body. ... The next task is to download a complete time series of images that illustrate how your sunspot is moving due to the sun's rotation. ...

ATMoB "Double Star Award " Guidelines Purpose: To promote observing among the membership of the Amateur Telescope Makers of Boston ­ in particular, double, triple, and multiple stars. Introduction: Double, triple, and multiple stars are the "Rodney Dangerfields" of the night sky. ... W hile they can be observed under a variety of sky conditions, double stars ­ especially close ones ­ are best viewed on nights when the seeing is steady. ... The direction from a star to Polaris is north. ...

... 1994: . Deep CCD images of the bright gamma-ray bursts GRB790418 and GRB790613 localization regions were obtained for the first time. In both cases, a faint blue star-like object (V = 24.5 m , BV m ) was detected within the region of localization of gamma-ray bursts. ... Based on sixty daily instantaneous spectra of the object SS433, obtained on the RATAN-600 in April-May 1994, we traced its variability in four very powerful flares at five frequencies. ... Archive . ...

... Beyond New York City . ... Observing Resources for Amateur Astronomers - Part 1: Beginning Observers . ... A History of the First Forty Years of the Amateur Astronomers Association . ... For those of us who need on occasion to seek out truly dark skies, a group of members of the Amateur Astronomical Association organizes regular trips to sites in the New York metropolitan area suitable for deep-sky observing. ... 2016 Amateur Astronomers Association of New York Designed by Press Customizr Powered by...

... Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer. 2002 May 14 . N44C: A Nebular Mystery . ... Hubble Heritage Team , NASA . Explanation: Why is N44C glowing so strangely? ... N44C, pictured in the above Hubble Space Telescope image, is an emission nebula in the Large Magellanic Cloud , a neighboring galaxy to our Milky Way Galaxy . ... About APOD | ... NASA Technical Rep.: ...

... Transitions between these levels gives line at 1.25 cm. ... 1.0 L/M=0.998 0.8 1.0 i=30 0.8 o Flux (arbitrary) 0.6 Flux (arbitrary) 0.6 0.4 0.4 0.2 0.2 D E 0.6 F 0.8 / 1.0 1.2 1.4 1.6 0.0 0.6 0.7 0.8 0.9 / 1.0 1.1 1.2 0.0 0.2 0.4 (a) Two wings 1.5 1.0 L/M=0.998 0.8 1.0 (b) Var ying rotation Flux (arbitrary) 0.6 Flux (arbitrary) C B 1.0 / 1.2 1.4 A 1.6 0.4 0.6 0.8 0.5 0.4 0.0 0.2 0.0 0.2 -0.5 0.4 0.6 0.8 / 1.0 1.2 (c) Var ying inclination (d) Data Figure 1: Fe line from accretion disk round black hole...

... Crystalline graphite has a strong resonant feature near 11.52 (Draine, [ 1984 ]) which is not observed... width 2 . Note that the observed weakness of the bump strength in dense clouds can be attributed to the hydrogenation of carbon (Sorrell, [ 1990 ]).. ... Its idea was first suggested by Gold ([ 1952 ])...fpell) 4 . A similar conclusion follows from calculations made by Matsumura and Seki ([ 1996 ])... ``correct'' 5 . ...

... Moon Phase below . ... ARTICLE: Why the moon always shows us the same face . ... Before you continue reading, you should know that this was not always the case, i.e. the Moon once was rotating with respect to the Earth, so that on every night a terrestrial observer (if there was one, because this was long, long before mankind appeared on our planet, and even before any major animals had appeared) saw another face of the Moon. ... Figure 1 (not to scale) shows how we can imagine the system Earth-Moon...

The temperature of the spindle housing is plotted v. time. ... The spindle housing was initially at room temperature. An exponential equation was fit to the data. The time constant is 3.5 +/- 1.2 hours and the equilibrium temperature is 26 +/- 6 њC above ambient. ... The displacement of the front surface of the spindle housing relative to the table is plotted v. time. ... The time constant is 6.0 +/- 0.6 hours and the equilibrium temperature was assumed to be 20њC, i.e., room temperature. ...

RELATIVE SUNSPOT NUMBERS Description of Data from SGD Explanation of Data Reports: Relative Sunspot Numbers -- The relative sunspot number is an index of the activity of the entire visible disk of the Sun. ... The provisional daily Zurich relative sunspot numbers, Rz, were based upon observations made at Zurich and its two branch stations in Arosa and Locarno and communicated by M. Waldmeier of the Swiss Federal Observatory. ... This indicates the uncertainty above and below the predicted number. ...

... Series 4000 filters thread into the barrels of virtually all 1.25" eyepiece brands. Meade Series 4000 filters are a large 26mm in clear aperture and are manufactured from the purest crown optical glass, dyed-in-the-mass ( not "color coated"); there are no finer filters available for telescopic applications. ... For visual applications Series 4000 filters thread into the barrels of all Meade 1.25" eyepieces, and into the barrels of virtually all other 1.25" eyepiece brands as well. ... Meade 4M | ...

RTT150 . ... This search system is designed for generating the necessary information on series of pointings (observations of each source consist of sets of exposures with different filters and sometimes with different exposure times) for observed sources. Search results appear at the separate page as a table with the following data: . DATE - real (not evening!) observations date (in YYYY-MM-DD format); . ... Bin - minimal CCD binning mode (may vary during the observations); . ...