... Bad Astronomy . ... Bitesize Astronomy . ... Last week's Snack talked about how black holes can affect the environment around them in such a way as to be very bright . ... It's a common misconception that black holes always have matter swirling into them. ... As this matter gets closer and closer to the black hole it piles up and a large, fairly flat disk forms. This is called the accretion disk , because matter from this disk accretes (that is, falls in) on the black hole. ... 2008 Phil Plait. ...

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... 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...

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• Астронет > Molecular Torus Surrounds Black Hole
• Circling a Black Hole at its Photon Sphere
• Journal "Peremennye Zvezdy"

... We have measured this "redshift" for the pink black holes, and allowed for it in our calculations. ... We see this effect in the emission from gas around these pink black holes, but it is far too small an effect to account for the pinkness. Thus the swirling motions of gas around or into the black holes cannot produc the colour. ... At first we thought that these things were normal blue black holes hidden behind clouds of interstellar dust, that absorbed the blue light and made them appear pink. ...

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... 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 | ...

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• APOD Index - Stars: Black Holes
• APOD: 2013 July 2 - Circling a Black Hole at its Photon Sphere
• APOD: 2008 August 11 - Black Hole Candidate Cygnus X-1

... SS433 is a close binary system, one star is a supergiant, a second one is a black hole. ... Even a black hole cannot accept such an enormous mass flux, a supercritical accretion disk appears, all the excess gas glows up to several tens of thousands degrees and is ejected off the disk with enormous velocities. ... SAO researchers have found an evidence of the supercritical accretion onto a black hole in SS433, which follows from a brightness variability of the SS433 disk. ...

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• New Luminous Variable Star in M33
• Detection of unique bright radio flare of X-ray binary
• SS433

... HUBBLE UNCOVERS DUST DISK AROUND A MASSIVE BLACK HOLE . Resembling a gigantic hubcap in space, a 3,700 light-year-diameter dust disk encircles a 300 million solar-mass black hole in the center of the elliptical galaxy NGC 7052. ... Because the jets in NGC 7052 are not perpendicular to the disk, it may indicate that the black hole and the dust disk in NGC 7052 do not have a common origin. ... NGC 7052 is located in the constellation of Vulpecula, 191 million light-years from Earth. ...

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• Making HST Pictures: Illustrations
• HST this week: 271
• HST this week: 012

RUSSIAN PEREPLET . Culture, Science, and Education Portal . Science Space Culture General Discussion Scientific Discussion Seminars . News: The best of Russian Science and Technology . ... MASTER Team Science Release: Discovery of the Black Hole Ergosphere? ... The International Conference "The International Conference" . ... MASTER is the first russian asteroid factory . ... New Russian "Volga" . ... MASTER - is the first russian robotic telescope for observations Gamma-Ray Bursts . ...

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... ESO . ... Survey Telescopes . ... Near-infrared images of the active galaxy NGC 1097, obtained with the NACO adaptive optics instrument on ESO's Very Large Telescope, disclose with unprecedented detail a complex central network of filamentary structure spiralling down to the centre of the galaxy. ... Our analysis of the VLT/NACO images of NGC 1097 shows that these filaments end up at the very centre of the galaxy ", says co-author Juha Reunanen from ESO. ... The Centre of the Active Galaxy NGC 1097 ...

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• Circinus Galaxy before and after SN 1996cr appeared | ESO
• Circinus Galaxy before and after SN 1996cr appeared | ESO Ireland
• Circinus Galaxy before and after SN 1996cr appeared | ESO United States

... Special Reports Giant space cloud may be powered by black holes 17:57 23 April 2007 NewScientist.com news service David Shiga An enormous cloud of roiling plasma in space may be drawing its energy from black holes, new observations suggest. Such clouds might be sources for the mysterious particles that occasionally crash into Earth's atmosphere at ultra - high speed. ... But higher energy particles in the cloud may be able to escape, he says. ...

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• HISA Poster for the 195th Meeting of the AAS, January, 2000
• HISA Poster for the 33rd Annual Meeting of CASCA, May, 2002

M1 image More About M1 Nice Color Picture . ... M16 image More About M16 HST image . ... M31 image More About M31 Nice Color Picture . ... M42 image ; M43 image More About M42/43 Nice Color CCD Picture . M51 image More About M51 Color Image of M51 M51 Supernova . M57 image More About M57 Nice Color CCD Picture Very Deep M57 Image . ... M81 image More About M81 M81 Supernova Ultraviolet Image of M81 More about Ultraviolet Imaging . M82 image More About M82 M82 False Color M82 True Color . ...

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• Low Surface Brightness Galaxy Gallery
• Galaxy Gallery Page III
• LSB wALES cONFERENCE fOLLOW-pu

... A rough estimation is that in the United States there is one planetarium per 100,000 population, ranging in size from the Hayden Planetarium's 20-meter dome seating 430 people, to three-meter inflatable portable domes where children sit on the floor. ... Together dblo associates make a huge impact in the architecture, interior design and development arena in London. ... With the holidays around the corner what better way to spoil your family than with your very own private home cinema. ...

12. Digistar 4 Planetarium Projection System in Action | Astronotes

13. http://www.arcetri.astro.it/~palla/ANDREAIMMAGINI/Galassie/QSO100000.txt

14. Профессиональная активная акустика dB Technologies - dB Technologies - dB

15. Black aurora [Oulu]

16. http://www.astronomy.com/sitefiles/resources/image.aspx?item=%7BF236F9BB-B584-4B98-A55B-A3A6822FB77C%7D

17. Bright fireball seen over Ireland | International Year of Astronomy in Ireland

18. Gravitational Lensing by Stars

19. http://www.iki.rssi.ru/comp/2014/gilfanov4_annotation.htm

20. Microwave Plasmachemistry for Photonics. IRE RAS.