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... Gallery . ... The 9" Oddie refractor, 188?- ... The Oddie surrounded by snow . Sidebar Left . Sidebar Top . No Sidebar . Sidebar Bottom . ... Title: The Oddie surrounded by snow . Description: NOTE: All images are copyright and must not be reproduced or mirrored in any form without written permission. File name: Snow_Oddie.jpg . ... The Oddie surrounded by snow NOTE: All images are copyright and must not be reproduced or mirrored in any form without written permission. ...

... 2004 September 8 . Molecular Torus Surrounds Black Hole . ... Explanation: Why do some black hole surroundings appear brighter than others? ... Alternatively, the black holes in the center of Seyfert Type II galaxies might be obscured by a surrounding torus . ... The constant flux and apparent absorption of very specific X-ray colors by cool iron together give evidence that the central black hole in NGC 4388 is seen through a thick torus composed of molecular gas and dust . ... About APOD | ...

... To help choose between these competing hypotheses, the nearby Seyfert II galaxy NGC 4388 has been observed in X-ray light recently by many recent Earth-orbiting X-ray observatories, including CGRO , SIGMA , BeppoSAX , INTEGRAL , Chandra , and XMM-Newton . ... The constant flux and apparent absorption of very specific X-ray colors by cool iron together give evidence that the central black hole in NGC 4388 is seen through a thick torus composed of molecular gas and dust . ... Too Close to a Black Hole...

... Neutral hydrogen observations with the Effelsberg 100-m telescope have disclosed an HI bubble surrounding the WN6-7 star WR 149, located in the far side of the Perseus spiral arm. With a radius of 57 pc and an expansion velocity of about 10 km/s, this new bubble appears similar to those previously found around other Wolf-Rayet stars. ... ISM: bubbles -- stars: individual: WR 149 -- stars: Wolf-Rayet . ...

... 2000 October 16 . Dust and Gas Surrounding Star R Coronae Australis . ... The dust is so thick on the upper left of the above photograph that little light from background stars comes through. Thinner dust near the stars reflects light from R Coronae Australis (upper right) and neighbor TY Coronae Australis , giving their surroundings a flowing appearance. ... The unusual structure above the center is a Herbig-Haro object, a knot of gas ejected from the star that has impacted surrounding gas. ...

. Album : asv-album :: Travels to distant places and countries :: 1997/08 Kyoto, Nara (Japan) :: 25/08 Kyoto Botanical Garden . Up . << Prev . Small waterfall, surrounded by bushes. Next >> . Album created by album tool a MarginalHack written by David Ljung on Tue Jun 23 14:46:27 2015 .

The AstroGuide . ... AstroGuide | ... AstroGuide Listing . Login . See many more Astronomy Listings by: Category or Alphabet . ... However, you must Login to submit a comment. oops . ... www.astronomy.net . About Astronomy Net | Advertise on Astronomy Net | ... Unless otherwise specified, web site content Copyright 1994-2016 John Huggins All Rights Reserved . dbHTML," "AstroGuide," "ASTRONOMY.NET" & "VA.NET" . are trademarks of John Huggins ...

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... Meta Index / Home Page / Source Flagging Algorithms A number of checks on the pixels surrouding the central pixel of the source are performed to determine if there is a "strong" mod-8 pattern. ... if (fmax 1000.0 ) then (Probably hasn't produced a strong mod-8 pattern) isMod8Source = .false. return elseif(fmax 10000.0) then (Probably has produced a strong mod-8 pattern) . ... isMod8Source = .false. end if Carry out some more checks- look for a mod-8 pattern around the source . ... dx = 30 / binx . ...

Next: The Stopping Radius Up: ``Ecology'' of Magnetic Rotators Previous: A Gravimagnetic Rotator . We shall assume that the rotator is surrounded by an ideally conductive plasma with a density and a sound velocity at a sufficiently far distance from the rotator. ... The following classification   of magnetic rotators     is based on the essential characteristics of the interaction of the plasma surrounding them with their electromagnetic field. ... leading to a spindown   of the rotator. ...

Aims: We study the structure of the medium surrounding sites of high-mass star formation to determine the interrelation between the H ii regions and the environment from which they were formed. ... Methods: We present new Herschel/SPIRE 250 ЮМm, 350 ЮМm and 500 ЮМm data of LHA 120-N44 and LHA 120-N63 in the LMC. We construct average spectral energy distributions (SEDs) for annuli centered on the IR bright part of the star-formation sites. ... The source N44 does not show a systematic trend. ...

... It was shown in the early 1980's that spectral lines formed around 1-2.5 x 10 5 K were enhanced in radiance by factors up to 15-25 over the normal quiet Sun. From the dynamical viewpoint, this would suggest a pressure imbalance between the sunspot and the surrounding region. ... Here, the electron density was evaluated over a bright sunspot plume region using lines within the O V 760? multiplet. ... The derived densities in all four regions are indicated. ...

... Tonight's Sky . ... Photos . ... Sky this Month . ... Behemoth black hole found in an unlikely place . ... black holes . space flight . ... space physics . ... The Sky This Week: April 1 - 10 . ... Sky this Week . ... The Real Reality Show: Would aliens be anything like us? ... How is it that in space, despite the Sun's presence, the surroundings look black? Apollo photos show a black sky, even with strong sunlight on the surface. ... Get instant access to subscriber content on Astronomy.com! ...

The Solar spots - are the dark formations on the Sun's disk. ... The greatest observed spot is 100 thousand kilomiters. The spots are the places of the magnetic fields' getting out to the solar atmosphere. ... That's why they look so dark . ... The Solar convection zone is the layer with the thickness of 150 - 200 thousand kilomiters, situated under the photosphere; the substance of this layer being in convectional movement transformes the energy from inside the Sun's to its surface. ...

... For the past years I have been working on the problem of synthesis of light curves of close binary systems, consisting of a normal star and a compact object (point object with fixed X-ray luminosity). ... Possible existence of a bright spot on the disk's lateral surface is taken into account. ... The last of then will be published in Gordon and Breach Publishers ( Cherepashchuk A.M., Katysheva N.A., Khruzina T.S., Shugarov S.Yu. ... Cherepashchuk A.M., Katysheva N.A., Khruzina T.S., Shugarov S.Yu. ...

Astronotes Armagh Planetarium's Stellar Blog! ... Armagh Planetarium . ... Stars . ... Space Flight . ... Monthly Sky Notes . ... NGC 6357's inner star forming region glows with the emission of ionized hydrogen gas. Image credit: ESO/VVV Survey/D. Minniti. ... Located around 8000 light years away in the constellation of Scorpius , NGC 6357 (sometimes called the Lobster Nebula ) is a typical stellar nursery, filled with vast clouds of gas and tendrils of dark dust. ... Subscribe to Astronotes . ...

... Sunspots are manifestations of magnetically disturbed conditions at the Sun 's visible surface. ... Sunspot appear often in groups, and the sunspot number R is defined as R = k ( f + 10 g ), where f is the total number of spots visible to the observer, g is the number of disturbed regions (single spots or groups of spots), and k is a constant for the observatory related to the sensitivity of the observing equipment. Sunspots display a clear 11-year cycle in their number and latitude. ...

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. Russian-French Laboratory "J.V. Poncelet" . Moscow Centre for Continuous Mathematical Education . Independent University of Moscow . A.A. Kharkevich Institute for Information Transmission Problems of RAS . V.A. Trapeznikov Institute for Control Problems of RAS . Moscow, August 26-31, 2012 . Home . Registration . Titles of talks . Schedule . Important deadlines . Contact us . How to reach us? . PhotoGallery . Back