A.F.Kholtygin, J.C. Brown, J.P.Cassinelli, S.N.Fabrika, D.N.Monin, A.E.Surkov, . Structure and variability of hot star winds", . ... We propose the three-phase model for hot star winds and calculate the X-Ray line emission of hot component of wind in a comparison with a XMM-Newton X-Ray spectra of O4f star zeta Puppis. The results of high-resolution spectroscopy for some bright O-stars are also presented. The line profile variability of bright O-stars 19 Cep and lambda Ori A is detected. ...

... 2014 July 21 . Spacecraft Rosetta Shows Comet has Two Components . Image Credit: ESA / Rosetta /MPS for OSIRIS Team ; MPS /UPD/LAM/IAA/SSO/INTA/UPM/DASP/IDA . Explanation: Why does this comet's nucleus have two components? The surprising discovery that Comet 67P/Churyumov–Gerasimenko has a double nucleus came late last week as ESA 's robotic interplanetary spacecraft Rosetta continued its approach toward the ancient comet's core. ... About APOD | ...

Comment on J0513-2159 . Our image shows an extension to about 5 mas SE from the brightest feature. The EVN 8 GHz image by Dallacasa et al. (1998), with about five times larger resolution, shows an extension from the brightest feature roughly opposite to our direction. As noted by Dallacasa et al. (1998), the structure detected has a highly inverted spectrum, which, together with the reported variability in the source, could explain the structural disagreement. ...

Next: Transparency of the Stochastic Up: Model of the Galaxy Previous: Frequency distribution of galactic . ... The parameters of the model resulted from a numerical fitting of various data, such as the observed distribution of the young star population and neutral hydrogen, the density of population II stars in the vicinity of the Sun, the galactic rotation curve and the dynamics and distribution of globular clusters   and dwarf irregular satellites of the Galaxy. ...

... The components have a steady phase but variations of 303 Gilcreek 2460 2272 2454 2448 2268 2442 2436 2264 1985 1990 1995 2000 2005 2390 2388 2386 2384 1985 1990 1995 2000 2005 Kashima 2132 2128 2124 2120 2116 Kokee-Kauai 1985 1990 1995 2000 2005 2390 2388 2386 2384 1985 1990 1995 2000 2005 1985 1990 1995 2000 2005 Onsala Westford 2240 2238 2236 Wettzell 1985 1990 1995 2000 2005 Figure 1. ... 2246 2244 2242 2240 2238 2236 2234 1985 1990 1995 2000 2005 BKG GSF IAA MAO IVS Figure 3. ...

... Created: 23 February 2001 . ... SOFTWARE MAINTENANCE MANUAL . ... 9 January 2001 . ... Note: in the final document, the table of contents will be to third level] . The Software Maintenance Manual describes the procedures for installation and maintenance of the software for the Gemini Near-infrared Integral Field Spectrograph (NIFS). ... Section 19.4.3 of the document “Programmatic Requirements for Gemini Instrumentation Development” states the requirements for the Software Maintenance Manual . ...

... Tonight's Sky . ... Observing . ... Astronomy for Kids . ... Imaging Basics . ... Dawn obtains first low-altitude images of Vesta . ... NASAт??s Dawn spacecraft has sent back the first images of the giant asteroid Vesta from its low-altitude mapping orbit. ... Dawn returned the images to Earth December 13. ... Only registered members of Astronomy.com are allowed to comment on this article. ... Receive news, sky-event information, observing tips, and more from Astronomy's weekly email newsletter. ...

... ACCESSORIES . ... OEM COMPONENTS . ... ABOUT LOMO . ... MICROSCOPES . ... OEM OPTICAL COMPONENTS . ... MICROSCOPE APPLICATION GUIDE AND MODEL SELECTOR . ... LOMO stereo microscopes deliver crisp images for such demanding applications as industrial inspection, electronic component manufacturing, biological and botanical studies, classroom teaching, etc. ... LOMO manufactures the widest range of microscope accessories and components such as objectives, eyepieces, condensers, illuminators, stages, etc....

... 237S (SIMBAD/NED BibCode) ================================================================================ Keywords: Sun: UV radiation - atmospheric effects - Sun: atmosphere - lines: identification Description: An ultraviolet atlas of the solar spectrum with a spectral resolution of 15mA in the region 1948-2000A is presented. ... The wavelength atlas with a list of about 550 lines has been synthesized from data at center of the Sun ({mu}=1) and at {mu}=0.89, smoothed out over an area of 30 arcsec. ...

... 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...

... India (2011) 00, 1­11 Evidences of the central engine activity in the Naked-Eye Burst prompt optical emission S. Karpov1 , G. Beskin1 , S. Bondar2 , A. Guarnieri3 , C. Bartolini3 , G. Greco4 and A. Piccioni 1 2 3 4 3 Special Astropysical Observatory, Nizhnij Arkhyz, Russia, 369167 Institute for Precise Instrumentation, Nizhnij Arkhyz, Russia, 369167 Astronomy Department of Bologna University, Bologna, Italy Astronomical Observatory of Bologna, INAF, Italy Received 17th February 2012 Abstract. ...

... S.P. KOROLEV ROCKET AND SPACE CORPORATION ENERGIA . ... OAO RSC "Energia" . ... Company's History . ... History . Brief History of Rocket and Space Technology . Rocket Systems . Flights Chronology . ... ISS Russian Segment . ... Rocket Space Complexes . ... Automatic Space Systems . ... Yamal-200 Communications Satellite . ... Contribution of RSC Energia to the Russian Rocket-Space Technology . ... RSC Energia: Progress MS-02 docked with the ISS.' ... AUTOMATIC SPACE SYSTEMS . ...

... The study of the Large-scale structure of the Universe and measurements of the Dark Energy equation of state; The exploration of the growth and cosmological evolution of supermassive Black holes in the Universe. ... In course of the all sky survey SRG will discover about 100 000 galaxy clusters and 3 million AGNs. Galaxy clusters are the largest gravitationally bounded objects in the Universe and are best explored through the study of X-ray emission from the hot intergalactic gas. ... 2016 IKI RAN ...

Stellarium 0.12.3 . ... Classes . ... Scripting . ... Scripting Engine . ... Script Console . ... Since version 0.10.1, Stellarium includes a scripting feature based on the Qt Scripting Engine . ... Prior to version 0.10.0, Stellarium used a different scripting engine called StratoScript . ... Prior to version 0.10.0, Stellarium had a simple scripting engine, known as StratoScript . ... This script prints "Hello Universe" in the Script Console output window. core.debug( "Hello Universe" ); . ...

... Data on all outstanding radio events, observed at IZMIRAN in October­November 2003, can be found at [6]. ... Radio emission of the 28 October 2003 event: (a) the metric dynamic spectrum with several diffuse type II bands; (b) the strong microwave burst with a delayed predominating post-eruptive component. ... Radio emission of the 3 November 2003 event: (a) the metric dynamic spectrum with fine-structured type II bands; (b) the microwave burst with a delayed predominating post-eruptive component. ...

Abstract -- The strengths of magnetic fields in interstellar gas clouds are obtained through observations of the circular polarization of spectral line radiation. ... To infer information about these irregularities from the observational data, we develop statistical relationships between the rms values of the irregular component of the magnetic field and spatial variations in the circular polarization of the spectral line radiation. ...

Astronomy Picture of the Day . The South Pole of Asteroid Vesta . ... 19.09.2011 . ... Credit Copyright: NASA , JPL-Caltech , UCLA , MPS, DLR, IDA Explanation: What created the circular structure around the south pole of asteroid Vesta? ... 2011 2012 . ... Publications with keywords: Vesta - asteroid - spacecraft - south pole . Publications with words: Vesta - asteroid - spacecraft - south pole . ... The Missing Craters of Asteroid Itokawa . ... Asteroid 2012 DA14 Passes the Earth . ...

The Nuclear Structure of 3C 84 with Space VLBI (RadioAstron) Observations PoS(EVN 2014)021 Gabriele Giovannini1,2 , Monica Orienti2 , Tuomas Savolainen3,4 , Hiroshi Nagai5 , Marcello Giroletti2 , Kazuhiro Hada2,5 , Gabriele Bruni4 , Jeffrey Hodgson4 , Mareki Honma5 , Motoki Kino6 , Yuri Y. Kovalev7 , Thomas Krichbaum4 , Sang-Sung Lee6 , Andrei Lobanov4 , Bong Won Sohn6 , Kirill Sokolovsky7 , Peter Voitsik7 , J. Anton Zensus4 . ... 2014, Tavecchio and Ghisellini 2014). PoS(EVN 2014)021 2. ...

... The axial support is provided by 78 air pistons. ... The transverse support is provided by 38 air pistons, supported by cantilevers from the mirror cell, that act on the mirror local center of gravity surface. ... The locations where the transverse mirror support forces should be applied to the mirror are listed in Table 1 and illustrated in Figure 1. ... Figure 1: CAD drawing showing the 2.5-m primary mirror and the locations of the transverse support posts (black) and axial pneumatic pistons (blue...

home publications > mercury . ... Razor-Sharp Radio Astronomy . ... By constructing virtual telescopes the size of continents (and larger), radio astronomers are obtaining spectacular high-resolution results. by T. Joseph W. Lazio . Early radio astronomers faced a problem: Their telescopes had lousy resolution. ... Radio astronomers have spent the last 30 years perfecting very long baseline interferometry (VLBI), synthesizing virtual telescopes the size of a continent or even the size of Earth! ...