... Behemoth black hole found in an unlikely place . ... black holes . ... Observing springtime deep-sky objects with a large telescope . ... Could large numbers of black holes account for much of the "dark matter" estimated to exist in our universe? ... NASA, ESA, M.J. Jee and H. Ford (Johns Hopkins University) No, because the universe never had the raw material to grow enough black holes to account for current estimates of dark matter. Get instant access to subscriber content on Astronomy.com! ...

... Data Reduction FAQ > A number of OmegaCAM filters show vignetting in their central regions. What are the causes for this and what are the dimensions of these features? ... Observing with ESO Telescopes . ... ESO-MIDAS . ... ESO Data . ... ESO HST Image Galleries . ... ESO Data Access Policy . ... ESO Science Newsletter . ... A number of OmegaCAM filters are not monolithic, but consist of four segments (each covering 8 detectors) that have a central cross-shaped support structure. ... Filter . ...

... Users . ... Data Collection and Analysis . ... This particular part of the analysis has been disabled since the code is struggling to cope with the number of users seen this year, in particular the large contingent of people who have re-tweeted NASA. ... Order accounts: by user number (effectively random) by number of tweets (includes retweets) by number of followers by number of followers that also tweeted about AAS225 by number of friends that also tweeted about AAS225 . ... by user number . ...

The near-IR data from 2MASS (Two Micron All Sky Survey) and DENIS (Deep Near-Infrared Southern Sky Survey) are ideally suited for studies of the structure of the LMC, because of the large statistics and insensitivity to dust absorption. ... Wide-angle view of the Large and the Small Magellanic Cloud (SMC) on the sky. ... Another wide-angle view of the LMC (bottom left) and the SMC (top left) on the sky, with part of the luminous band of the Milky Way visible as well (right). ...

... Armagh Observatory, College Hill, Armagh BT61 9DG, +44 (0)28 3752 2928 . Armagh Observatory, 1st December 2015: This year s Geminid meteor display, the best of the annual meteor showers, will be visible from approximately the 7th to 17th December, peaking on the evening of the 14th. ... Unlike most meteor showers, however, which originate from dust grains ejected into space by comets, the Geminid meteors originate from an unusual near-Earth asteroid, namely (3200) Phaethon. ...

... Today this year's largest group of sunspots will cross the Sun's central meridian. ... The next day, the number of spots in the group reached five, and the day after, on June 2nd, it was possible to count thirteen sunspots on solar disk, which had been clear prior to this. ... This year's two most powerful active areas, which passed across the solar disk at the beginning of May, 2009, are set to appear in the Sun's eastern sector in two days, on June 6th. ...

... The Stars of NGC 300 . ... Like grains of sand on a cosmic beach, individual stars of large spiral galaxy NGC 300 are resolved in this sharp image from the Hubble Space Telescope's Advanced Camera for Surveys (ACS). ... NGC 1 and NGC 2 . ... Beautiful nebulae, clusters, and galaxies that grace planet Earth's night sky are often known by their New General Catalog designation or NGC number. ... Planets over Paranal . ... Perseid Meteors and the Milky Way . ... Where will the next Perseid meteor appear...

... VDIFIO is a library to create, access and modify headers for VDIF formatted data. ... int createVDIFHeader ( vdif_header * header , int dataarraylength , int threadid , int bits , int nchan , int iscomplex , char stationid [ 3 ] ) ; . ... Return the number of bytes occupied by the entire VDIF frame (note internally VDIF divides this values by 8) int getVDIFFrameNumber ( vdif_header * header ) ; . Return the current VDIF frame number int getVDIFStationID ( vdif_header * header ) ; . ...

... Number of Strips: This is the total number of strips to be covered for the map. The map size (in declination), is then (Number of strips 1) (Dec step) + (Beam size). If you wish to do a complete map, you must have (Number of strips) = 2 INT[(Dec Offset)/(Dec Step)+0.5] +1 . ... If you wish to do a complete map, you must have (Number of strips) = 2 INT[(Dec Offset)/(Dec Step)+0.5] +1 the declination of your first strip will be ([object Dec] + [Dec Offset]). ...

October 16, 2006 (Monday) Srikanth Raghavendra, India . November 13, 2006 (Monday) Tuhin Roy, Boston . November 20, 2006 (Monday) Dave Soper, University of Oregon . ... Fall 2005 . Winter 2006 . Spring 2006 . Summer 2006 . Fall 2004 . ... Fall 2000 . ... Winter 2000 . Spring 2000 . Summer 2000 . ... L = 2 terms in the low-energy regime but no ? ... This system is remarkably well-suited to addressing outstanding issues in both cosmology and fundamental physics. ...

... Bojan Nikolic web pages (r. 329) . Out-Of-Focus (OOF) Holography . The observed beam maps are shown in the first row of the table below. ... The analysis was done in the usual way. ... A sample OOF observed data set (top row) and the results of analysis with increasing number of Zernike polynomials used to parameterise the aperture: . Observed beams . Example of an OOF analysis for the GBT . Observed data and analysis . ... Copyright 2005 -- 2016, Bojan Nikolic feedback welcome ...

... Formation of large-scale inhomogeneous magnetic structures in a turbulent convection". ... Magnetic fluctuations generated by a tangling of the mean magnetic field by velocity fluctuations are studied in a developed turbulent convection with large magnetic Reynolds numbers. ... This effect is caused by a negative contribution of the turbulent convection to the effective mean Lorentz force. ... The energy for this instability is supplied by the small-scale turbulent convection. ...

RELATIVE SUNSPOT NUMBERS Description of Data from SGD Explanation of Data Reports: Relative Sunspot Numbers -- The relative sunspot number is an index of the activity of the entire visible disk of the Sun. ... The provisional daily Zurich relative sunspot numbers, Rz, were based upon observations made at Zurich and its two branch stations in Arosa and Locarno and communicated by M. Waldmeier of the Swiss Federal Observatory. ... This indicates the uncertainty above and below the predicted number. ...

... The numbers of three types of compact binaries containing accreting NSs and BHs, which are most interesting from the point of view of their observational appearances, have been calculated as a function of time: i) X-ray transient source containing a NS in an eccentric orbit around a main sequence Be-star (the observed prototype: A0535+26), ii) BH The evolution of the selected types of X-ray binaries during the first 10 million years after the starburst onset is presented in Fig. ...

... Give laxation where number a simple order of magnitude argument to show why the retime for 2-bo dy encounters in a stellar system TR 3 /m2 n, is the velo city dispersion, m the typical stellar mass and n the density of stars. (10 marks) 2. From B&T 99, question 2.3). The density distribution (r ) = 4 M rJ 3 4 r J r 2 (r + r J ) 2 (where M and rJ are constants) for a spherical galaxy is called a Jaffe mo del (after Walter Jaffe of Leiden University, who devised it). ...

... Planets . ... The planets were found using the HARPS instrument on the 3.6m telescope at ESOтАЩs La Silla Observatory. ... A planet in orbit around a star causes the star to regularly move towards and away from observers on Earth. ... One newly discovered planet, HD 85512 b, is best hope found so far for a habitable exoplanet. ... The HARPS team so far have found that about 40% of stars similar to own Sun have at least one planet smaller than Saturn (which is 95 times more massive than Earth). ...

... In 2009 I wrote several papers : Some applications of W. Rudins inequality to problems of combinatorial number theory, Uniform Distribution Theory, 15 pages, submitted for publication, On an inverse theorem for U3 ( )-norm, Modern problems of mathematics and mechanics, Mathematics, Dynamical systems, v. 4, 2, (2009) 55­127. ... In the first paper we obtain some new applications of a well­known W. Rudin's theorem concerning lacunary series to problems of combinatorial number theory. ...

Observing Shooting Stars by Andrew Fraknoi (Foothill College and Astronomical Society of the Pacific) What are Shooting Stars? ... Astronomers call them meteors. When is the Best Time to See the Shooting Stars? While a random shooting star can be seen on any night, there are times when the Earth encounters many particles in space and we can see a larger number of meteors every hour. A list of these "meteor showers" is given at the bottom of this page. ... 1-6 Apr. ... 7-16 Best Dates Jan. ...

Astronomy Discussion Forums . ... A Number Is A Very Specific Thing . ... Post Message | ... Posted by Harvey on October 9, 2002 16:41:15 UTC . ... When you use the word 'number', you are introducing a specific kind of symbol that is known within the context of mathematics. ... You know what - harvey1 - October 9, 2002 - 20:53 UTC . ... www.astronomy.net . ... Forum posts are Copyright their authors as specified in the heading above the post. "dbHTML," "AstroGuide," "ASTRONOMY.NET" & "VA.NET" . ...

A meteor is a bright streak of light in the sky (a "shooting star" or a "falling star") produced by the entry of a small meteoroid into the Earth's atmosphere. ... A small number of meteorites have been shown to be of Lunar (15 finds) or Martian (13) origin. ... It was formed about 50,000 years ago by an iron meteor about 30-50 meters in diameter. ... About 120 impact craters have been identified on the Earth, so far (see below ). ... another list of identified impact craters on Earth (plain text) . ...