... Credit: Frank Andreassen (nettfoto.no) Explanation: What causes gaps between aurora curtains? These unusual gaps can make Research using data from four Cluster spacecraft orbiting the Earth has likely found the secret: auroral gaps, sometimes knows as black auroras , are actually anti-auroras. ... Pictured above , a series of well-defined auroral gaps is seen dividing green aurora curtains high above Harstad , Norway , earlier this month. ... Publications with keywords: aurora - black aurora . ...

... 2006 March 29 . Green and Black Aurora Over Norway . ... Explanation: What causes gaps between aurora curtains? ... Research using data from four Cluster spacecraft orbiting the Earth has likely found the secret: auroral gaps, sometimes knows as black auroras , are actually anti-auroras. ... Pictured above , a series of well-defined auroral gaps is seen dividing green aurora curtains high above Harstad , Norway , earlier this month. ... About APOD | ...

... Тип: Сумка через плечо . ... Сумка из прочного материала Cordura. Благодаря повышенной прочности, сумка идеальна в дальних поездках и на каждый день.Технические характеристики: Материал Cordura - прочный баллистический нейлон, который раньше использовался в военной сфере.Основное отделение на молнии.Внутренние карманы.Регулируемый плечевой ремень.Логотип. ... Женская сумка из натуральной кожи . ...

... The cable uses female telco connectors. ... The cable has a female telco connector at each end. ... Colors are shown as Black / White , meaning a black wire with a white stripe. pin color pin color 01 Blue / White 26 White /Orange 02 Orange/ White 27 White / Blue 03 Green / White 28 White / Green 04 Brown / White 29 White / Gray 05 Gray / White 30 White / Brown 06 Blue /Red 31 Red/ Blue 07 Orange/Red 32 Red/ Green 08 Green /Red 33 Red/Orange 09 ...

... 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. ...

Two groups are measuring distant supernovae with the goal of determining whether the Universe is open or closed by measuring the curvature in the Hubble diagram. The figure below shows both data sets: Perlmutter et al. (1997) and (1998) in black and Garnavich et al. (1997) in orange. The curves show a closed Universe (Omega = 2) in red, the critical density Universe (Omega = 1) in black, the empty Universe (Omega = 0) in green, and the steady state model in blue. ... Tutorial : Part 1 | ...

Image of Saturn by Mark and Nigel Stronge taken on 17th December 2002 showing the square shadow where the planet's shadow meets the Cassini division. ... showing the black drop effect. The report was published in a recent issue of the magazine 'Astronomy Geophysics,' entitled 'Extending the Black Drop to Saturn' ** by Mark Bailey (Armagh Observatory), David Stewart (Irish Astronomical Association) and Mark Stronge (East Antrim Astronomical Society). ...

Upper Panel: Jet model fits with residuals for observation of GRO~J1655-40, with the jet inclination angle fixed to $75^{\circ}$. The light green dashed line is the pre-shock synchrotron component, the darker green dash-dotted line is the post-shock synchrotron component, the orange dash-dotted line represents the SSC plus the disk external Compton component, the purple dotted line is the multi-temperature disk black body plus a black body representing the companion star in the binary system. ...

... 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. ...

Next: Elliptical Galaxies. ... NGC 4258 is a nearby ( D = 6.4 Mpc) active spiral galaxy with high luminosity H 2 O maser emission. ... This provides the most compelling evidence so far for a black hole in the centre of a galaxy. ... As NGC 4258, the galaxies NGC 3079, NGC 1068, NGC 4945, and Circinus each host an H 2 0 megamaser (apparent isotropic luminosity > 10 L ). ... Weaker H 2 0 masers are also known in NGC 253, M82 and a few other galaxies (see Greenhill et al. 1990, and references therein). ...

... Another option is to buy slides of astronomical objects at different wavelengths to show students why astronomers use different bands of the spectrum to bring out specific characteristics in celestial objects. ... He then uses the camera to scan the entire classroom, asking students to identify what they are seeing. ... Once students see light in action, they can investigate its properties - such as frequency, wavelength, and interference - with wave experiments. ...

... 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 front end of the disk eclipses more stars than the back, it appears darker. ... Despite its size, the disk is 100 times less massive than the black hole. ... The bright spot in the center of the disk is the combined light of stars that have crowded around the black hole due to its strong gravitational pull. ...

Minimum detectable flux density (8.5 sigma) at 430 MHz, ZA=0, b=90 deg. ... Red = AOFTM (2x1024x10 kHz) . ... Volume sampled in a high latitude survey of 680 deg^2. Volume sampled in a low latitude survey of 680 deg^2. These curves are the volumes sampled taking into account dispersion scattering smearing as a function of L_p = pseudo luminosity (mJy kpc^2). ... Bottom frame: Detection volume = volume weighted by space density of MSPs as found by Cordes \ Chernoff (ApJ, in press, June 1997) . ...

... Binary Radiopulsars with Black Holes", Astroph.J., v.423,p.L121-L124,1994, (with M.E.Prokhorov, K.A.Postnov and E.Yu.Osminkin) . ... Evolution of the double neutron star merging rate and the cosmological origin of Gamma-ray burst sources" , Astroph.J., 1995, v.454, 593-596 (with Postnov, K.A. and Prokhorov M.E.) . On the nature of binary radio pulsar PSR B0042-73 in the Small Magellanic Cloud" , Astroph.J., v.441, 776-778, 1995 (with Postnov, K.A. and Prokhorov M.E.) . ...

... PhD Thesis Topics offered by ESO Faculty Members > Thesis Topic: Black hole accretion versus star burst episodes: what is the engine of powerful active galaxies? ... Observing with ESO Telescopes . ... ESO-MIDAS . ... ESO Data . ... ESO HST Image Galleries . ... The aim of this research project is to understand the emission mechanism(s) in these active galaxies: . how much power is ultimately due to accretion onto supermassive black holes and how much is due to star formation processes ? ...

2014 May version . ... Green D. A., 2014 , Bulletin of the Astronomical Society of India, 42 , 47-58. ( .pdf , or arXiv.org:1409.0637 ) If you make use of the detailed version of the catalogue, then plaese also cite: . Green D. A., 2014, `A Catalogue of Galactic Supernova Remnants (2014 May version)' , Cavendish Laboratory, Cambridge, United Kingdom (available at "http://www.mrao.cam.ac.uk/surveys/snrs/" ). ... Copyright D. A. Green 2014. 25872nd access to this version of the catalogue. ...

In this composite image of the Teacup Galaxy, the green colors show the starlight, the blue colors show the gas and the red/yellow colors show the radio emission. The bright yellow blobs in the center of the image show where the radio jets, launched by the black hole, are driving into the gas and accelerating it to (620 miles per second (1,000 km/s). The giant bubbles also are being inflated by the central black hole. ...

spaceweb@oulu.fi - last update: 18 February 1997, 1100 UT (RR) . Black aurora is a lack of auroral emission in a small, well-defined region within an otherwise uniform, diffuse background or within auroras exhibiting a degree of shear behaviour intermediate between that of diffuse and discrete aurora (e.g., Davis, 1978). It appears to be a common feature of the midnight sector during late substorm recovery phase (Trondsen and Cogger, 1997). ... 30 , 371-380, 1978. ... 102 , 363-378, 1997. ...

... Our Sun is part of a huge wheel-shaped collection of stars. ... Astronomers have long suspected it was a very massive black hole, and that every galaxy had such a central mass, created early in the history of the universe. ... However, unless that object happens to be headed directly at the black hole (a relatively small target) it will just swing around and fly away again, like a comet making a pass at the Sun. The velocity acquired in falling towards the black hole also helps it escape. ...

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