True Color Image Gallery: Galactic SNR | ... Position of Central Source (J2000) : ( 05 40 11.1, -69 19 55.2 ) . ... Radio Images Page . ... Exposure uf . ... Trailed Image of the central source is significant. ... 0.3 - 10.0 . ... central source . ... nH was derived by fitting the trail of central source which is believed not to be piled-up. see fit detail page for more about the fit. see chandra spectrum page for region used. ... 2001 , ApJ, 560, 742 : Chandra ACIS imaging and spectroscopy . ...

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• Chandra Images for G016.7+00.1
• Chandra Images for G012.8-00.0
• Chandra Images for G016.0+00.0

... rgsregions defines and constructs the various RGS event-selection regions, and adds them to the source list (see rgssources ). ... Image regions and the background region refer to the plane of dispersion versus cross-dispersion ( image plane ) and select events based on their spatial coordinates. ... The order regions refer to the plane of dispersion versus calibrated pulse-height ( energy plane ) and select events from a specific astrophysical source within a particular reflection order. ...

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• Parameters
• Source selection
• Point-like Sources

... 1Haynes+ A catalogue at 5 GHz of 915 sources in the Galactic plane is presented. Sources with a peak beam brightness temperature of at least 0.2 K above the surrounding background are included, except in confused regions; a point source of 0.2 K corresconds to 0.26 Jy. ... It was assumed that Hydra A was a point source with a peak flux density of 13 Jy at 5 GHz; this is equivalent to a mean beam brightness temperature of 10.0 K for a beamwidth of 4.1x4.4'. ...

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• Source Positions
• Radio survey for new compact HII regions
• Primary Catalog

... Next: The PROS Big Up: Software Systems Previous: Data Reduction Software . ... The srcinten task provides PROS users with a tool to compute count rates for point sources in the ROSAT High Resolution Imager (HRI). ... Corrected upper limits are cited at locations where the count rate falls below the source detection threshold. ... Srcinten is a new PROS task that computes and applies the above correction factors to the net counts in a user-specified aperture. ...

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• An Extragalactic Point Source Simulator for SIRTF Pipeline Testing
• Recreating Einstein Level One Processing Exposure Masks and Background Maps in
• ADASS 2002 Conference Proceedings

... We now consider estimation of count rates for objects with stellar, power law, and emission line spectra. To estimate the number of electrons collected from a point source of apparent visual magnitude V, one can use the equation: . ... If one knows the spectral index a (which is zero for a source with a flat continuum), V + AB_nu can also be calculated as the monochromatic Oke system magnitude at the corrected mean wavelength of the filter: . ... 6.3.3 - Count Rates for Emission Line Sources . ...

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• Appendix B: Point Source SNR Plots
• Plots for Estimating Point Source SNR

... Australia Telescope Compact Array Radio Imaging of the Proplyd-like Objects in the Giant HII Region NGC 3603'' . M?cke, A., Koribalski, B.S. , Moffat, A.F.J., Corcoran, M.F., Stevens, I.R. 2002, ApJ 571, 366 . ... Brenneman, L., Corcoran, M.F., Moffat, A.F.J., Marchenko, S.V., Ptak, A., Skalkowski, G., Mushotzky, R., Stevens, I.R., Mueke, A., Koribalski, B.S. , et al. ... Physical Properties of visual counterparts to X-ray sources in the giant HII region NGC 3603'' . ...

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• casacore: images/Regions/WCUnion.h Source File
• casacore: images/Regions/WCDifference.h Source File
• casacore: images/Regions/WCIntersection.h Source File

... Solar flare activity is produced by the processes of accumulation and release of energy in an active region. ... In the framework of study of solar active regions, producing powerful flares the researchers from the RATAN-600 radio telescope have detected sources with features in the form of a sharp drop in the intensity of polarized radiation in various parts of the recorded frequency range (2-16GHz), sometimes changing the sign of polarization. ...

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• RCJ0311+0507
• Study of radio spectra and variability of GPS sources

... Flux density at 1 GHz (/Jy): 320 . ... Optical: Faint filaments, spectra indicate a SNR superposed on a H II region. ... ADS . ... van den Bergh 1978, ApJS, 38, 119. Optical observations. ... Green 1989, MNRAS, 238, 737. ... DRAO at 408 MHz (3'.4?5'.8: S=480?60 Jy) and 1.4 GHz (1'.0?1'.7: S=270?40 Jy). ... DRAO at 408 MHz (3'.5?5'.2: S=540?40 Jy) and Effelsberg 100-m at 4.8 GHz (S=150?15 Jy). ... CGPS at 408 MHz (2'.9?4'.5) and 1.4 GHz (0'.8?1'.5). ... 2013, ApJ, 770, 93. -ray observations. ...

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• G320.4-1.2
• G189.1+3.0
• G74.0-8.5

... LABORATORY OF RADIO ASTRONOMICAL OBSERVATIONS . Radio sources identification is one of the most important tasks of the current radio astrophysics. ... Optical idetification. ... Optical identifications of subsample of steep spectra radio sources from RC catalog using 6m SAO telescope of SAO RAS: optical observations. ... Astronomy Reports. ... Identification of radio sources with data of various radio catalogs allows one to construct continual spectrum of the object and its radio structure. ...

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• Results scientific researchs 20
• SCORPIO: IFP Gallery
• V.Shergin's Home Page

Venus in visible light (violet filter) 50k gif ; 25k jpg . ... image from Pioneer Venus 15k jpg ; 28k jpg ( caption ) . ... 7 pancake volcanoes, alpha region 227k gif ; 327k jpg . ... Lada Regio, 47 deg S, 25 Long, showing mountains and craters 121k gif ; 321k jpg . ... Gula Mons and Cunitz crater, flat image of gulacun.gif 250k gif ; 178k jpg . ... Crater Farm, Lavinia Region, small 107k gif ; 147k jpg . ... Central Ovida region, 1 deg s by 83 deg 191k gif ; 531k jpg . ... Pictures .. ... Venus .. ...

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• The Sun
• TCV [Oulu]
• Planetary Picture List

Venus in visible light (violet filter) 17k jpg . Venus in visible light 73k gif . image from Pioneer Venus 15k jpg ; 28k jpg ( caption ) . ... UV image from HST WFPC2 (false color) 23k jpg ; 99k gif . ... New Magellan mosaics (5 hemispheres) 13500k tiff ; ( caption ) . ... 7 pancake volcanoes, alpha region 227k gif ; . Lada Regio, 47 deg S, 25 Long, showing mountains and craters 121k gif ; . ... False color IR image of Venus' lower clouds as seen by Galileo 37k jpg 112k gif ( caption ) . ...

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• APOD: July 29, 1998 - The High Energy Heart Of The Milky Way
• Open Source Convention