... In a meeting in California two weeks ago, unpublished results were presented indicating that most of the energy in our universe is not in stars or galaxies but is tied to space itself. ... A Sky Full Of Hydrogen . ... Interstellar space is filled with extremely tenuous clouds of gas which are mostly Hydrogen. ... The orange dot in the above false-color drawing represents the current location of the Sun among local gas clouds in the spiral Milky Way Galaxy. ... M104: The Sombrero Galaxy . ...

... It seems likely that field-aligned potential drops (upward directed electric fields) are formed to create this effect (e.g., Weimer and Gurnett, 1993), although different wave-related schemes have also been suggested (e.g., Bryant et al., ... Auroral arcs have been related to large, perpendicular electric field structures, electrostatic shocks , observed mostly at geocentric distances 1.4 - 1.8 Re (9000 - 12000 km altitude; Mozer et al., 1977; Torbert and Mozer, 1978; Mozer et al., ... Res. ...

... Direct Observation of Extra-Solar Planets with an Infrared Interferometer . ... Current . Missions . ... Research . ... Direct observation of such extra-solar planets with an infrared interferometer is a difficult task because of the very high dynamic range required (typically 3?104 to 3?105), but not impossible if a very careful spatial filtering and calibration is imposed upon the recombined beams. ... We propose an observing strategy to monitor hot extra-solar planets of the 51 Peg class. ...

This page allows the current observer to add to the session log for the current PPTA observing session. To start a new session, click 'start new observing session'. The last observer in the session must end the session by clicking on 'finish current observing session' - the observer will be redirected to a form. ... Current observer: . ... Note that all windparks, failures etc. should also be recorded through the standard observing webpages (click on "Links" tab at the top of the dashboard) . ...

Next: Rotation Periods of ZAMS stars Previous: T Tauri Stars . ... The first attempts to directly measure periodic modulation of T Tauri stars occurred in the early 1980s. Rydgren & Vrba (1983) observed four PMS stars using photoelectric photometry over a period of seven consecutive photometric nights. ... Because the spot lifetime is much longer than the rotational period, the observed effect will be a modulation of the light from the star synchronously with the rotation period. ...

... Parameters . Filters . ... Direct images . ... The SCORPIO-2 project: . Spectral Camera with Optical Reducer for Photometric and Interferometric Observations - 2 . The broad-band glass filters made in SAO RAS are used for the observation in the Johnson-Cousins (UBVRI) photometric system in the direct images mode. The glass filters transmission curves are shown by solid line. ... The filters transmission curves of the `comets' filters measured with the SCORPIO-2 in the F/4 beam. ...

... Up: Data Analysis and Processing Techniques . ... Also, a method for quality control of CCD observations is suggested. ... Everyone who observes a celestial object using a CCD detects moving celestial objects as a ``by product''. ... We hope that our investigations may be useful for near-Earth space control and also for searches of the moving celestial objects through analysis of old and new CCD frames obtained at any amateur or professional astronomical observatory. ...

... The results of radio observations of GRB 080319B in the spectral range of 8.45 GHz are presented. ... Key words: Gamma­rays ­ bursts: observations ­ radio: individual: GRB 080319B 1 Intro duction Gamma­ray bursts (GRBs) are the most luminous explosions currently known in the Universe. ... Smooth angular scanning was used not only in GRB 080319B observations, but to specify the primary standard source radio flux density as well (Kharinov et al., ...

... Flux density at 1 GHz (/Jy): 250 . ... Radio: Distorted shell, brighter to the E, with pulsar and associated nebula. ... ADS . ... Molonglo at 408 MHz (3': S=299 Jy). ... Einstein observations. ... 1991, ApJ, 372, L99. ... VLA at 327 MHz (3'.6?3'.8: S=469 Jy). ... VLA at 1.4 GHz (15''), plus X-ray spectra. ... 1996, ApJ, 461, 820. ... VLA at 1.5 and 8.4 GHz (8".9?7".8) of pulsar nebula. ... Reach & Rho 1996, A&A, 315, L277. ... VLA at 74 MHz (36''?39'': S=634?70 Jy) and 324 MHz (13'': S=411?50 Jy). ...

Next: The power spectrum Up: Fourier analysis: The Previous: Fourier analysis: The . Transformations which take functions, e.g. x , y as arguments and return functions as results are called operators. The direct and inverse Fourier transform, , and the convolution, , are operators defined in the following way: . where square brackets, , indicate the order of the operators and round brackets, , indicate the arguments of the input and output functions. ...

The large magnetic cloud caused by coronal mass ejection at the Sun on January 6, 1997 came to the Earth at early morning on January 10 and continue to interact with Earth's magnetosphere till January 11 (see for example home page of this event prepeared by Dr. M.Peredo http://www-istp.gsfc.nasa.gov/istp/cloud_jan97/event.html ). ... During the days discussed here INTERBALL-1 satellite was in the magnetosphere (MS) near its dusk flunk - see the Fig. 1 for compearing. ...

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... 2002 October 11 . Fomalhaut Dust Disk Indicates Planets . Drawing Credit: David A. Hardy , ROE , ATC , NSF , NASA . Explanation: One of the brightest stars on the sky likely has planets. ... Recent observations in far infrared light with a detector cooled to near zero kelvins indicate a dust disk surrounding Fomalhaut that has both a hole in the center and a warped edge. ... About APOD | ... NASA Technical Rep.: ... A service of: LHEA at NASA / GSFC . ...

... Ciel Espace, le magazine qui vous guide toujours plus loin . ... Ciel Espace, nouvelle formule, c'est . ... des pages consacr†йes †а la publication de vos photos Mais c'est aussi une vraie communaut†й avec laquelle partager votre passion et nourrir votre curiosit†й. Accueil La chute dтАЩun corps c†йleste sur Jupiter vue en direct . ... Celui du 17 mars 2016 est donc le 4†иme impact observ†й directement sur Jupiter. ... 25/03/2016 - Exomars est-elle pass†йe tout pr†иs dтАЩun †йchec ? ... Etat du ciel...

Spatially Resolved MidIR Observations of the Disk Surrounding Par 21 Mario van den Ancker 1 1 European Southern Observatory, KarlSchwarzschildStrasse 2, D85748 Garching bei MЭnchen, Germany 1. Introduction The small group of YSOs known as FU Orionis stars provide striking evidence for the importance and irregularity of disk accretion during early stellar evolution. ... Fig. ... Par 21 is clearly resolved into an elongated structure with a size of a few hundred AU (Figs. ...

... Click here to go directly to the Orion Nebula Images. ... Copies of individual figures from this paper are available from John Bally . ... Figure 1: The core of the Trapezium showing the four energetic massive stars and a plethora of Sun-like stars with surrounding extended emission. ... Click to download figure in jpeg format. Click to download figure in tiff format. ... Figure 3: A gallery of star-disk systems in Orion's Trapezium. ... To Doug Johnstone's Scientific Home Page . ...

... Armagh Observatory, College Hill, Armagh BT61 9DG, +44 (0)28 3752 2928 . ... Lightcurve of HW Vir from images obtained using the Faulkes Telescope South, operated by Las Cumbres Observatory . The blue triangles show the difference between two stars whose brightness is constant. ... This shows the value of the Faulkes Telescopes in the follow-up observations of eclipsing binaries with the aim to detect and characterise additional circumbinary companions. ...

... P2723 Date Received: 2012-Mar-01 19:51:14 Technical Page Proposal Type: General Category: Observation Category: Total Time Requested: Minimum Useful Time: Prop osal Title: ABSTRACT: Regular Pulsars Galactic 60 Hours 1 hour Measuring Shapiro Delay in NANOGrav Pulsars Measuring Shapiro delay (SD) via pulsar timing is a popular technique to measure companion masses, orbital inclination angles and to infer neutron star masses. ... This proposal requires coordination with GPS L3 at 1381 MHz. ...

Next: ВВЕДЕНИЕ Up: ПРЯМОЕ НАБЛЮДЕНИЕ АНИЗОТРОПНОЙ Previous: ПРЯМОЕ НАБЛЮДЕНИЕ АНИЗОТРОПНОЙ . M.E. Prokhorov, & K.A. Postnov . ... The kick velocity acquired by a neutron star at birth lies within the range 50-500 km/s. Mike E. Prokhorov . Wed Aug 21 19:54:24 MSD 1996 ...

This illustration shows the disk of our Milky Way Galaxy surrounded by a fain, extended halo of old stars. Astronomers using the Hubble Space Telescope to observe the nearby Andromeda Galaxy serendipitously identified a dozen foreground stars in the Milky Way halo. They measured the first sideways motions (represented by the arrows) for such distant halo stars. The motions indicate the possible presence of a shell in the halo, which may have formed from the accretion of a dwarf galaxy. ...