. Figure 3. SOHO/EIT derotated 6-hour difference images of the 14 July 2000 event in four diverse-temperature lines 171, 195, 284, and 304 . For each line, the 13 UT heliogram is subjected to the suppression of the `snowstorm' produced by energetic particles, and only dimmings (i.e. structures of negative resulting intensity) are shown. Different appearance of the images is due to different exposure times.

The Isaac Newton Institute (Instituto Isaac Newton) for astronomical research (INI) was founded in 1978 by Gonzalo Alcaino. The main office is located in the eastern outskirts of Santiago (Chile). ... The Moscow branch was the first one established outside Chile. ... Besides the above named branches, the Chilean staff of the Isaac Newton Institute is involved in collaboration with astronomers of the Observatory of Rome in several research projects using data secured from telescopes in Chile. ...

Geometric Algebra 3 Dirac Theory and Multiparticle Systems Chris Doran Astrophysics Group Cavendish Laboratory Cambridge, UK Dirac Algebra · Dirac matrix operators are · These act on 4-component Dirac spinors · These spinors satisfy a first-order wave equation MIT3 2003 2 STA Form · Adapt the map for Pauli spinors · Action of the various operators now Imaginary structure still a bivector Dirac equation MIT3 ...

I'm interested in the structure of interstellar ``clouds'' (filaments, sheets, or whatever) of gas and dust over a wide range of scales, from Galactic spiral arms to AU-scale features -- also how these structures form and interact. ... The possibility of clumpy dust scattering in the Pleiades reflection nebula, which might explain its otherwise surprising UV scattering properties . ... Intricate structure of H I emission and self-absorption in the CGPS . ... Fractal studies of molecular clouds . ...

... Why is spiral galaxy Centaurus A in so much turmoil? ... Earth at Night . ... This is what the Earth looks like at night. ... Ancient Volcanos of Mars . ... Rays from an Unexpected Aurora . ... Spiral Galaxy NGC 2997 from VLT . ... NGC 2997 is a grand design spiral galaxy. ... NGC 2997, pictured above, is speeding away from us at about 1100 kilometers.. The Galactic Center A Radio Mystery . ... Tuning in to the center of our Milky Way galaxy, radio astronomers explore a complex, mysterious place. ...

Next: Starting the MIDAS Up: No Title Previous: Some Useful Commands . ... In section 5 you will find some details about how the MIDAS commands are executed. ... With MCL you can write high level MIDAS ``programs'' which are called MIDAS procedures to distinguish them from programs written in a language like FORTRAN-77 or C. The topics include: . ... All the commands related to MIDAS catalogs are listed in section 9, together with an example of how to use catalogs in MIDAS procedures. ...

... Observing . ... Solar Observing . ... April 3 (SUN) - Solar Observing, Central Park , Manhattan . ... APRIL'S SKY . ... Lecture Series at the American Museum of Natural History The Amateur Astronomers Association is proud to present an astronomy lecture series from October through May each year for our members and the .. ... The€аAmateur Astronomers Association of New York€аwas organized in 1927 to promote the study of Astronomy, emphasizing its cultural and inspirational value. ...

Databases (NSDC) of the Natural Planetary Satellites. ... NSDC: Database of astrometric observations of Natural Planetary Satellites . ... They are thoroughly looking for observations in different sources, creating their owndatabases which are then mostly inaccessible to other researchers. ... In the file "content" with explications, the reference is given to the data source as well as the bibliographic reference. ... Data sources. ... Why a specific bibliographic database for Natural satellites? ...

... Dynamic allocation is a pretty unique feature to C (amongst high level languages). ... queue.c */ /* Demo of dynamic data structures in C */ #include stdio.h #define FALSE 0 #define NULL 0 typedef struct { int dataitem; struct listelement * link ; } listelement ; void Menu ( int *choice); listelement * AddItem ( listelement * listpointer , int data ); listelement * RemoveItem ( listelement * listpointer ); void PrintQueue ( listelement * listpointer ); void ClearQueue ( ...

Astronotes Armagh Planetarium's Stellar Blog! ... Armagh Planetarium . ... Space Flight . ... Posted on February 23, 2012 | 17 Comments NASA has photographed an alien building on the surface of the Moon! ... Continue Reading.. Posted on December 15, 2011 | ... Posted on November 14, 2011 | ... Posted on August 19, 2011 | ... 1 Comment ?Is there life on Mars?? ... Posted on May 31, 2011 | ... Posted on March 23, 2011 | ... Posted on February 26, 2011 | ... Posted on January 27, 2011 | ...

11 august 2014/Monday: Arriving, Registration . ... The variation of solar flare coronal X-ray source spatial properties. ... Melnikov V.F., Charikov Yu.E., Kudriavtsev I.V. Directivity of X-ray and gamma-ray emission from different parts of flaring magnetic loops. ... E., Melnikov V.F. Angular characteristics of polarization degree of hard X-ray emission from different parts of flaring magnetic loops. ... The thick target model and analytical calculations of the hard X-ray emission from solar flares. ...

... The observed distributions of stars of different ages and metallisities in the Z coordinate relative to Sun: (a) young ( t 3 Gyr) metall-rich ( [Fe/H] -0.13 ) stars; (b) young metal-poor ( [Fe/H]<-0.13 ) stars; (c) old ( 3 Gyr) metal-rich stars, and (d) old metal-poor stars. ... next figure | previous figure . ...

From the Tunguska Space Body to the Evolution of the Protoplanetary Nebula . ... A model for the structure of comet nuclei is proposed based on the results of the investigations of carbonaceous substances from the epicenter of the Tunguska cosmic body (TCB) explosion. ... Editorial note: This paper suggests several new ideas about the solar nebula and the formation and composition of comet nuclei based on investigations of the Tunguska event. ...

... It lists the coefficients defining the colour transformations, the zero points for the different filters and the aperture radii used in the photometric calibration analysis. ... The AB system zero point of the filter FilterID is stored in the keyword ABM0 FilterID , e.g. the AB zero point of the the U-filter is stored in ABM0U. The flux conversion factor derived from White Dwarfs of the filter FilterID is stored in the keyword FCF FilterID . ... description . ... AB Flux conversion factor of U . ...

... Data archive . ... The DLT S4 tapes are used to backup the Pulsar Archive disks. ... The index of the directory structure of the archive disks is preserved and stored in the /psr/backup/tape*.* files. We use the tar command to write backup tapes, with the blocking factor and the input list of files specified. ... To create separate index files for an each tape file, the executable file such as /pulsar/psr/backup/comm_tar is used, which is just a list of tar commands for different tape files. ...

... Sun as a Source of Perturbation of Near-Earth Medium and Solar System Bodies. ... Tidal Influence of the Sun on the Earth. ... Structure of Solar Atmosphere. ... Observing Manifestations of Solar Activity. ... Forecasting of Solar Activity. ... Influence of Solar Activity on the Structure and Dynamics of Terrestrial Atmosphere. ... Problem of Mechanism of Solar-Troposphere Connections. ... Phenomenons in Auroral Zones of the Earth as a Result of the Sun Influence on the Terrestrial Atmosphere. ...

ATMoB "Galaxy Observing Award " Guidelines Purpose: To promote observing among the membership of the Amateur Telescope Makers of Boston through participation in the Galaxy Observing Awards program. ... Examples of elliptical galaxies: M49, M59, M60, M87, NGC 4125. Limiting Magnitude Assessment: Spirals: A spiral galaxy consists of a flattened disk, with stars forming a (usually two-armed) spiral structure, and a central concentration of stars known as the bulge. ...

... Description . Catalog . ... In the Catalog, we publish equatorial (ЮБ 2000 , ЮД 2000 ) and galactic (l,b) coordinates of cluster centers derived as the position of overdensity in 2MASS catalog (Koposov et al. ... Distances, color-excesses and ages are the mean-square values calculated using all available evaluations from different color-magnitude diagrams. ... There are individual pages for every cluster where all available plots and parameters are published. ... 2002). ...

... 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...

SPECIALIZED COMPUTER SYSTEMS FOR MATHEMATICAL MODELING OF DISCRETE POINT STRUCTURES READOUT PROCESS Aleksandr Reznik, Andrey Torgov, Aleksandr Soloviev Institute of Automation and Electrometry, Siberian Branch, Russian Academy of Sciences The paper describes the specialized software systems that have been used to solve difficult mathematical problems in digital images processing. ... Systems for the first computers based on FORTRAN. ... Systems based on Matlab special environment. ...