Astronomy Picture of the Day . TT Cygni: Carbon Star . ... Centered on the Sun, a circle that size would lie between the orbits of Mars and Jupiter. ... A Space Station Meets its Destiny . ... Destiny, pictured here, will also serve as a control center for the Earth orbiting space station. ... Sand Dunes on Mars . ... The false-color picture shows the bright infrared emission from dust and molecular gas in part of the Orion star forming region surrounding the Horsehead Nebula. ... In the picture.. ...

... The emission line galaxies observed are listed in Table 3 containing the following information: . column 1: The object's IAU-type name with the prefix HS. column 2: Right ascension for equinox B1950. column 3: Declination for equinox B1950. ... Two very faint objects (HS 1134+3640 and HS 1308+3845) are probably super-associations in the dwarf spiral NGC 3755 and in the Im galaxy UGC 8261. ... HS 1134+3639 : Probable low-mass companion of the galaxy NGC 3755 (the distance is 230 or 25 kpc). ...

lsst.coordConv љ unknown . ... Classes . ... All љ Classes љ Namespaces љ Files љ Functions љ Variables љ Typedefs љ Enumerations љ Enumerator љ Pages . coordConv: Astronomical Coordinate Conversions . The coordConv package provides the following classes and functions. ... Coord : represents a position on the sky, with proper motion and radial velocity; provides easy access to spherical and cartesian position. ... Position conversion functions: . ... Time conversion functions: . ...

... We study in this paper the effect of shock excitation of leaky and surface modes by the p-polarized electromagnetic wave incident on the rapidly ionized gaseous or solid layer. ... For example, if [pic] (solid density, multiple ionized plasma), the basic frequency [pic], [pic], [pic] we find, that the wavelength of leaky wave [pic] is in soft x rays band. ... If [pic] (low density gaseous plasma), the basic frequency [pic], [pic], [pic] we find, that the wavelength of leaky wave [pic] is in THz band...

Next: RSOG Pre-Observation Products . ... Mission Elements . ... The main mission elements (ME) are: . The RSOG, based at ASC, which is responsible for the science operation of the RadioAstron Mission. ... The Main Ballistic(Navigation) Center (MBC) belonging to Lavochkin Association coordinates preparation and exchange of orbit determination and orbit reconstraction ptoducts. ... Experiment codes of five characters are used in naming GRT related files. ... RSOG . ... Corr (GTS?) ... Corr (RSOG?) ...

. Unix commands are executable binary files located in directories with the name bin (for binary). Many of the commands that you use are located in the directory /usr/bin . When you enter the name of a command the shell checks to see if it is a built-in command. If it is not, it looks for the the binary file that the command name refers to in each of the directories that are defined in the PATH environment variable . more ...

... The trapping regions of high-energy charged particles surrounding the Earth are called radiation (or van Allen) belts (Van Allen et al., 1958; Van Allen and Frank, 1959). The inner one, located between about X = 1.1 - 3.3 Re (Earth radii, geocentric) in the equatorial plane, contains primarily protons with energies exceeding 10 MeV. ... The radiation belts are of importance primarily because of the harmfull effects of high energy particle radition for man and electronics: . ...

. Zelmanov Memorial Seminar . on . Gravitation and Cosmology . Sternberg Astronomical Instuitute . Main Page . Location . Organizers . Announcement . Archive . History . International . School Seminar . 1-5 March, 2004. LOCATION: . Sternberg Astronomical Institute . of . Moscow State University . Universitetskiy prospect, 13, . (SAI MSU) 119992 . phone (095) 939 50 06 . CONFERENCE HALL .

. In an effort to provide a centralized database for indexing locations and descriptions of Shuttle debris, the editors of Astronomy Net have generated a database and web page where reports can be logged. This may or may not prove useful for cataloging debris reports, but Astronomy Net is happy to dedicate computer resources to help out any way possible. We express our sympathy and prayers to the families and friends of the Columbia crew. If you have located Shuttle debris, report it here.

... Direct data transmission rate (Mbps) . ... the density of electron fluexs with energies in four bands from 0.04 MeV to 1.7 MeV; . ... sensor (TV, IR) data and heliogeophisical information (HGI) transmission to data receiving and processing centers at a rate of up to 2.56 Mbps; . ... 1.76 GHz - TV- and heliogeophysical information and DCLI's data transmission to data receiving and processing centers; . 7.5 GHz - TV- and heliogeophisical data transmission to data receiving and processing centers; . ...

... 2006 February 13 . The N44 Emission Nebula . ... Located in our galactic neighbor the Large Magellanic Cloud , N44 houses numerous massive bright stars, lengthy lanes of dark dust , and vast clouds of hydrogen gas that glows red. The red color of the N44 emission nebula comes from pervasive hydrogen atoms re-acquiring electron s that were knocked away by energetic light from massive stars. ... N44, pictured above , spans about 1,000 light years and lies about 170,000 light years distant. ...

... Hidden Hollow 2008 . ... 720 OH-97 W . ... Our Location, Maps, . ... Warren Rupp Observatory, the site of Hidden Hollow 2008 Star Party, is located in Hidden Hollow Camp. The camp is in the scenic Possum Run Road area away from traveled roads. ... FROM NORTH: Take I-71 S. Take the OH-13 exit- EXIT 169- toward BELLVILLE / MANSFIELD. Turn LEFT onto OH-13 S. Turn LEFT onto POSSUM RUN RD. ... Turn RIGHT onto OH-97. Turn LEFT onto MAIN ST / OH-13 / OH-97. ... Turn RIGHT onto POSSUM RUN RD. ...

INDOOR LOCATION USING ULTAWIDEBAND CHAOTIC RADIO PULSES Andrey A. Dmitriev Institute of RadioEngineering and Electronics, Russian Academy of Sciences, Mokhovaya St. 11-7, K-9, GSP-9, 125009, Moscow, Russia, E-mail: chaos@cplire.ru Abstract ­ The report is devoted to the problem of indoor location using ultrawideband chaotic signals. ... In the receiver the moment of pulse (pack of radio pulses) emission and the duration of chaotic radio pulse are supposed known. The duration of CRP is fixed. ...

... Science User Portal . ... ESO, the European Southern Observatory . ... Travel and Contacts . Travel to ESO Headquarters . ... ESO . ... Survey Telescopes . ... ESO Science Newsletter . ... ESO 3.6-metre telescope . ... MPG/ESO 2.2-metre telescope . ... ESO 1-metre Schmidt telescope . ... ESO Science Outreach Network . ... This image shows the sky around the location of ESO 378-1. This planetary nebula shows up clearly as a blue disc at the centre of the picture. ... ESO/Digitized Sky Survey 2. ...

... Milky Way . ... Science Fiction . ... Karl Guthe Jansky (1905-50) was born in Norman, Oklahoma; he was of French, Czech and English descent and grew up in Madison, Wisconsin.б  Jansky was the third of six children and was named after physicist Karl Guthe whom his father Cyril Jansky had worked for earlier in his career.An interest in science and physics was perhaps in KarlБЂ™s genes as Cyril Karl Jansky БЂњRadio Astronomy, I am your fatherБЂќ (Image credit:Wikimedia.org) . ...

... 18941904; Bespalov P.A. Effective saturation of absorption in a plasma magnetospheric maser. In book: Nonlinear Space Plasma Physics, R.Z. Sagdeev -Editor-in-Chief, American Institute of Physics, 1993, p.339-346]. Magnetospheric plasma maser [Bespalov P.A, Trakhtengerts V.Yu., ... In a magnetospheric plasma maser (MPM) the relatively dense magnetised plasma and the conjugate ends of a magnetic trap form a quasioptical resonator for electromagnetic waves. ...

... It is not always necessary to write a device driver for a device, especially in applications where no two applications will compete for the device. ... If your process is running as superuser (root), you can use the mmap() call to map some of your process memory to actual memory locations, by mmap() 'ing a section of /dev/mem. ... If you need to use cli() , you need a kernel-space driver, and a user-space driver will only cause grief as more and more Linux users use SMP machines. ...

Russian SHAREABLE DATA CENTER Institute of Solar-Terrestial Physics SB RAS . ... The algorithm and appropriate program for decametric radiosignal propagation conditions prediction for paths from 500 to 9000 km have been developed at ISTP SB on the basis of normal wave method (AltyntsevaB.I,Iliyin N.V., Kurkin V.I. and others //Decameters channel simulation on the base of normal wave method . ... Solar activity indices are chosen automatically from the prediction date from the database . ...

... DIAGNOSTICS OF IONOSPHERIC IRREGULARITY SPECTRUM USING MEASUREMENTS OF RADIO WAVE ANOMALOUS ATTENUATION UNDER VERTICAL SOUNDING . ... The selected experimental data are characterized by a high average level of attenuation of a signal of vertical sounding (10 dB and above), which cannot be caused by collisional absorption of radio waves (practically absent in a dark time of day) and, hence, being a consequence of scattering on random irregularities. ... ATTENUATION OF A VERTICAL SOUNDING SIGNAL . ...

Synchrotron Radiation Emission from relativistic electrons gyrating round magnetic field lines. ... Different spectrum ( - optically thick - optically thin #" ! ... Can calculate radiated power from Larmor's equation. dipole pattern Mildly Relativistic Electrons Even for , relativistic beaming changes emitted spectrum significantly. Depar ture from dipole pattern and spectrum no longer a single emission line. gf !e d c 'b a` Y X h Ultra-Relativistic Electrons: Synchrotron Radiation B e v v|| v_ | ...