... 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. ...

... Invited Review Paper. ... In radio-loud AGN, bipolar jets emanating from the nucleus emit radio through gamma-ray light that is relativistically beamed along the jet axes. ... We outline the two most plausible unified schemes for radio-loud AGN, one linking the high-luminosity sources (quasars and luminous radio galaxies) and one the low-luminosity sources (BL~Lac objects and less luminous radio galaxies). ... Table of contents (Postscript file, 38Kb) . ... Postscript versions of all the figures: . ...

The classic solution for homogeneous sphere was suggested in 1899 by A.E.N. Love [ 330 ], in 1908 by G. Mie [ 342 ] and in 1909 by P. Debye [ 199 ]. ... Traditionally the theory of light scattering by a sphere is called the Mie theory. ... The exact solutions of the Mie problem for an optically active sphere (i.e. a sphere of optically active material [ 7 ]) and for a sphere with an optically active mantle were first obtained in 1974-5 by S. Bohren [ 158 , 159 ]. ...

... STScI-PRC00-37 HUBBLE CAPTURES AN EXTRAORDINARY AND POWERFUL ACTIVE GALAXY Resembling a swirling witch's cauldron of glowing vapors, the black hole-powered core of a nearby active galaxy appears in this colorful NASA Hubble Space Telescope image. ... The larger outer ring extends off the image and is in the plane of the galaxy's disk. ... The black hole and its accretion disk are expelling gas out of the galaxy's disk and into its halo (the region above and below the disk). ...

Astronomy Picture of the Day . ... Pictured above are not aurora but nearby light pillars, a local phenomenon that can appear as a distant one. ... Big, beautiful spiral galaxy M101 is one of the last entries in Charles Messier's famous catalog, but definitely not one of the least. ... The Flaming Star Nebula from CFHT . ... Inside the Eagle Nebula . ... A closer look at the Eagle Nebula, however, shows the bright region is actually a window into the center of a larger dark shell of dust. ...

... X CB (X) Opening of a set X by a disk B. Closing of a set X by a disk B. Science-Driven Feature Selection (a) (b) Mount Wilson Classification The Mount Wilson classification scheme groups sunspots into four classes based on the complexity of magnetic flux distribution in associated active regions [1]: class : groups dominated by a single unipolar sunspot class : a pair of sunspots of opposite magnetic ... Convex hulls are utilized to measure polarity mixture in (j). ...

Summary of the pro ject by A. Shlapunov "The Cauchy Problem for Elliptic Complexes" It is well known, that the Cauchy problem for elliptic equations is ill-posed in all the standard functional spaces. ... For overdetermined elliptic systems this approach was based on Integral Representation Method. ... Differential complexes appear as compatibility conditions for overdetermined systems of differential equations (such as, for example, Maxwell system or multidimensional Cauchy-Riemann system). ...

... Location: STScI Cafeteria Conference Room . The STScI Active Galaxies Lunch series provides a forum for interaction between researchers at STScI, JHU and the surrounding area who are interested in astrophysical processes related to active galaxies and black holes. ... Massive Elliptical Galaxies and the Most Massive Black Holes" . ... Lensed, IR-Luminous Galaxies at 1 < z < 3: AGN and Star-Forming Galaxies at the Spitzer Confusion Limit" . ... Feb 9: . Marco Chiaberge (STScI) . ...

... 2008 January 10 . Active Galaxy Centaurus A . Credit: X-ray - NASA , CXC , R.Kraft ( CfA ), et al. ... Explanation: A mere 11 million light-years away, Centaurus A is a giant elliptical galaxy - the closest active galaxy to Earth. ... Centaurus A's central region is a jumble of gas, dust, and stars in optical light, but both radio and x-ray telescopes trace a remarkable jet of high-energy particles streaming from the galaxy's core. ... About APOD | ... A service of: ASD at NASA / GSFC . ...

. Home . News . Gallery . Events . Twitter . Press Releases . Links . Contact Us . Calendar . Press & Web Coverage . Previous . Next . List . Deirdre Kelleghan kept observing the Sun and she sent us a new wonderful drawing: "Active Region 10999, June 20th 2008 13:45 UT; PST 40/8mmTVP eyepiece/50X upscaled by eye; soft pastels and graphite on black paper". Thank you, Deirdre! . Tuesday, 24 June 2008 01:52 . International Year of Astronomy, Ireland National Node . [Back To Top] .

... Цвет: красный . Новая серия облегченных двухобъемных рюкзаков Light со съемным алюминиевым каркасом. ... Размер: 55 л . MJX F48 2.4GHz 4CH 6-axis Gyro Remote Control Helicopter MEMS Gyro . ... Детям до 7 лет следует использовать небольшое количество зубной пасты и . ... Размер BRAND: 8 лет (128 см) . Размер BRAND: 10 лет (140 см) . Размер BRAND: 12 лет (152 см) . Размер BRAND: 13 лет (158 см) . Размер BRAND: 16 лет (168 см) . Размер BRAND: 17 лет (176 см) . ...