... A Mystery in Gamma Rays . ... When the EGRET instrument on the orbiting Compton Gamma-ray Observatory surveyed the sky in the 1990s, it cataloged 271 celestial sources of high-energy gamma-rays. ... Many sources in this gamma-ray mystery map likely belong to already known classes of gamma-ray emitters and are simply obscured or too faint to be otherwise positively identified. ... Publications with keywords: gamma ray - unidentified sources - all sky . ... Simulated Gamma ray Sky . Gamma Ray Moon . ...

Еще в разделе: (Показать все результаты (>129531) - www.astronet.ru/ )

• Астронет > A Mystery in Gamma Rays
• Journal "Peremennye Zvezdy"
• XWare > APOD

... 2004 April 3 . A Mystery In Gamma Rays . ... When the EGRET instrument on the orbiting Compton Gamma-ray Observatory surveyed the sky in the 1990s, it cataloged 271 celestial sources of high-energy gamma-rays. ... But 170 of the cataloged sources, shown in the above all-sky map, remain unidentified. Many sources in this gamma-ray mystery map likely belong to already known classes of gamma-ray emitters and are simply obscured or too faint to be otherwise positively identified. ... About APOD | ...

Еще в разделе: (Показать все результаты (>4603) - www.sai.msu.su/ )

• APOD: 2000 March 24 - A Mystery in Gamma Rays
• APOD: 2001 August 11 - A Mystery in Gamma Rays

Next: Sample Properties Up: Sample Identification Previous: Comments on Individual Sources . Previously known serendipitous sources were selected by cross-correlating WGACAT with a variety of optical and radio catalogs, including the Ver?n-Cetty & Ver?n (1996) and Hewitt & Burbidge (1993) quasar catalogs, the 1 Jy (Stickel et al. 1994) and S4 (Stickel & K?hr 1994) radio catalogs, and the BL Lac catalog of Padovani & Giommi (1995b). ... Details of these 97 objects are given in Table 6. ...

Еще в разделе: (Показать все результаты (>58464) - www.eso.org/ )

• ESO - New Release of Images and Source lists for VPHAS+

Еще в разделе: (Показать все результаты (>28793) - www.atnf.csiro.au/ )

• ATNF Daily Astronomy Picture
• Discussion of the 'duchamp' source-finding package
• Matches with IRAS sources

... The second catalog of high-energy gamma-ray observations from the Energetic Gamma Ray Experiment Telescope (EGRET) on the Compton Gamma Ray Observatory includes data from Phase 1 (1991 April - 1992 November) and Phase 2 (1992 November - 1993 September) of the mission. ... Also included are approximate upper limits for gamma-ray sources at any point in the sky and information about sources listed in the first EGRET catalog but not appearing in this one. gamma rays: general . ... Source Detections . ...

Еще в разделе: (Показать все результаты (>3171) - www.sao.ru/ )

• Group IAG
• Source Positions
• RBSC-NVSS SAMPLE. I. RADIO AND OPTICAL IDENTIFICATIONS

1000 of these sources, however, remains a mystery; these are the so-called unassociated gamma-ray sources, with no known astrophysical counterpart at any other wavelength. While many LAT unassociated sources likely belong to known classes of objects (e.g. pulsars), a more exotic origin for some of these sources is also possible (e.g. dark matter annihilation). ... These results will aid further studies and follow-up observations of LAT unassociated sources. ...

Еще в разделе: (Показать все результаты (>684) - www.mso.anu.edu.au/ )

... 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. ...

Еще в разделе: (Показать все результаты (>1180) - jet.sao.ru/ )

• PUBLICATIONS IN 1998
• PUBLICATIONS, 1996
• GRB follow-up team

.

Еще в разделе: (Показать все результаты (>15163) - www.stsci.edu/ )

• Herschel Key Program Heritage: a Far-Infrared Source Catalog for the Magellanic
• The Document Resources of Purple Mountain Observatory Library
• Astronomy Resources

... Archives . ... Quote of the Week, July 12, 2007 . ArXiv] Complete Catalog of GRBs from BeppoSAX, July 13, 2007 . Jul 13th, 2007| 07:24 pm | ... From arxiv/astro-ph: 0707.1611 Probabilistic Cross-Identification of Astronomical Sources by Budavari and Szalay . As multi-wave length studies become more popular, various source matching methodologies have been discussed. ... Are there any power related studies on source matching statistics? ... Chandra Blog . ... Stat S/W Resources . ...

Еще в разделе: (Показать все результаты (>4876) - hea-www.harvard.edu/ )

• The AstroStat Slog source matching
• ChaMPlane apj_appendix
• ChASeM33 Source Catalog

home resources > books . SEARCH ASP SITE: Match ALL words Match ANY word . ... Buy The Black Hole at the Center of our Galaxy at Amazon.com! Reviewed by Terrell Kent Holmes . In 1974 astronomers discovered a bright radio source at the center of the Milky Way Galaxy, in the direction of the constellation Sagittarius. It was an unknown quantity then, but astronomers now know that the object is a supermassive black hole causing a maelstrom of activity at the galactic center. ...

Еще в разделе: (Показать все результаты (>1420) - www.astrosociety.org/ )

• ASP: ComPADRE: Communities of Physics and Astronomy Digital Resources in
• ASP: Resource Center
• ASP: Educational Resources

The Variable Gamma-Ray Source 2CG 135+01 ApJ, 497:L89-L91, 1998 7 h gamma AGN variability . gamma-radio-AGN-variability ADS query . ... Model for the High-Energy Emission from Blazars 1993ApJ.. ... Possible Production of High-Energy Gamma Rays from Proton Acceleration in the Extragalactic Radio Source Markarian 501 astro-ph/9803241 K.Mannheim . ... A theoretical unifying scheme for gamma-ray bright blazars astro-ph/9807317 G. Ghisellini, A. Celotti, G. Fossati, L. Maraschi, A. Comastri . ...

Еще в разделе: (Показать все результаты (>701) - xray.sai.msu.ru/ )

• Evolution of the Double Neutron Star Merging Rate andthe Cosmological Origin of
• Be/X-ray binaries and candidates
• Astronomical Resources

... Exoplanet Atmosphere and TTV Science , K. Collins at NASA Goddard, August 2011 . ... MAGPI , April 14, 2011 . The Southern Skies Digital Science Partnership , B. Carter, C. Brown, R. Hart, D. Foster, J. Kielkopf, and R. Moore (Astronomical Society of Australia, July 2007) . ... Kent Observatory , B. Carter, C. Brown, R. Duncan, D. Foster, R. Hart, J. Kielkopf, P. Martin, M. Mengel, R. Moore, S. Sinclair, K. Treschman, and I. Waite (Astronomical Society of Australia, July 2006) . ...

Еще в разделе: (Показать все результаты (>333) - www.astro.louisville.edu/ )

... Astrophysics Group . ... AMI Publications . ... AMI Consortium: Hurley-Walker N. et al., 2011, preprint (arXiv:1103.0947) . ... AMI Consortium: Olamaie M. et al., 2010, preprint (arXiv:1012.4996) . ... AMI Consortium: Shimwell T. W. et al., 2010, preprint (arXiv:1012.4441) . ... AMI Consortium: Davies et al., 2010, preprint (arXiv:1012.3659) . ... AMI Consortium: Franzen et al., 2010, preprint (arXiv:1012.3711) . ... AMI Consortium: Rodriguez-Gonzalvez C. et al., 2010, preprint (arXiv:1011.0325) . ...

Еще в разделе: (Показать все результаты (>3930) - www.mrao.cam.ac.uk/ )

• Galaxy Evolution: Radio sources and their environments
• Galaxy Evolution: The origin and evoltuion of radio sources
• NVSS Source Search ($Revision: 1.6 $ - running v2.17)

We present optical, ultraviolet (UV) and extreme ultraviolet (EUV) results for a new active late-type dwarf star discovered by the Extreme Ultraviolet Explorer (EUVE). A large flare with an energy in excess of 1E35 erg and duration of ~1.1 days was detected in the EUVE Lex/B band (60--200AA). ... The `quiescent' EUV emission of the source is similar to the most active flare stars with the `quiescent' optical spectrum showing strong H alpha, Ca II H Mg II h emission and Li I 6707.8A absorption. ...

Еще в разделе: (Показать все результаты (>4683) - star.arm.ac.uk/ )

• Astronomy Links
• Abstract 218
• Performance

Proposal Identification No.: ... Section IV - RFI Considerations 2 Frequency Ranges Planned 300 - 350 Section V - Observing List Target List 00:31:06.0 01:02:12.7 02:39:32.8 03:12:48.7 03:18:01.9 03:38:16.7 03:41:51.7 04:31:33.5 05:16:47.9 05:26:38.1 06 ... 07:11:38 06:12:48 10:13:29 15:48:36 01:31:12 06:32:31 12:12:43 35:55:47 36:52:56 12:13:13 26:05:07 07:02:53 07:07:24 Fermi2FGL 2FGL 2FGL 2FGL 2FGL 2FGL 2FGL 2FGL 2FGL 2FGL 2FGL 2FGL ...

Еще в разделе: (Показать все результаты (>4875) - www.naic.edu/ )

• http://www.naic.edu/vscience/schedule/2014Spring/CamilotagP2717.pdf
• http://www.naic.edu/vscience/schedule/tpfiles/DenevatagP2859tp.pdf
• http://www.naic.edu/~astro/sdss7/talks/HoPtalks/GB6_AO9_SDSS7_presentation.pdf

... Comprehensive source-flagging was introduced into SAS 6.5 in 2005, and things can occasionally go wrong- when problems are found the cause is identified and improvements made. ... Here is a list of known shortcomings/problems- . ... Smoke ring - Occasionally one or more sources may clearly to be seen to be near or within a smoke-ring, but not flagged. ... Source lies near to a bright source - Occasionally a source near to a bright source may not be flagged, when you expect it to be. ...

Еще в разделе: (Показать все результаты (>8763) - xmm.vilspa.esa.es/ )

• Source detection
• Algorithm

The Arcetri Catalog contains measures and bibliographic data for all known H2O maser sources north of declination = -30 degrees (to be observable with the Medicina radiotelescope). ... This database is fully described in Cesaroni et al. ... A statistical analysis on the atlas has been carried (Palagi et al 1993). R. Cesaroni, F. Palagi, M. Felli, M. Catarzi, G. Comoretto, S. Di Franco, C. Giovanardi, F. Palla: A Catalogue of H2O maser sources north of delta=-30 , Astronomy and Astrophysics Suppl., ...

Еще в разделе: (Показать все результаты (>8385) - www.arcetri.astro.it/ )

• APOD: 2000 April 4 - A Superwind from the Cigar Galaxy
• Algorithm
• Pubblicazioni recenti

... SKY IN THE HIGH-ENERGY GAMMA-RAYS ACCORDING TO THE DATA OF SAS-2 (1972-1973), COS B (1975-1982), GAMMA 1 (1990-1992) AND EGRET (1991-2000) . ... View of the sky in the gamma-rays of energy above 100 Mev according to the EGRET data. The small bright spots correspond to compact sources. ... COMPACT SOURCES . Compact high-energy gamma-ray sources according to the 3-d EGRET catalog. ... Unidentified sources . ... previous page . next page . main page . CYGAM (PDF, 450 Kb) . ...

Еще в разделе: (Показать все результаты (>966) - www.cosmos.ru/ )

• "Exploration" as a Classroom Resource
• Data sources
• Nonequilibrium distributions

. RC-archive . RC0907+0436 . RC0908+0451 . RC0934+0505 . RC0942+0447 . RC0945+0454 . The R-band contours (BTA) superposed . on 1490MHz image (VLA) ps . The map (1490MHz,VLA) superposed . on the R-band image (BTA) ps . Last updated 30 Jul 2001

Еще в разделе: (Показать все результаты (>120) - sed.sao.ru/ )

• Methods and results of radio cosmology. Plan.
• Source Parameters from the Steep Spectrum Subset of RC Catalog
• Radio Sources Parameters

... 2015: . Explanation of the Origin of Ultraluminous X-Ray Sources . Using optical spectroscopy, we revealed the origin of unusual objects: ultraluminous X-ray sources in other galaxies, which radiate in the X-ray range thousands times stronger than the black holes in our Galaxy. ... Detection of Radio Transients and Variable Radio Sources using the Archive Data of the Cold Surveys . ... O.Zhelenkova ), E.Majorova, A.Temirova . ... E.Majorova, O.Zhelenkova. ... Archive . ...

Еще в разделе: (Показать все результаты (>1382) - mavr.sao.ru/ )

• Metagalaxy sector, archive 1993
• Metagalaxy sector, archive 1998
• Detection of Radio Transients and Variable Radio Sources Using the Archive Data