... 2001 December 10 . Globular Cluster M15 . ... Explanation: Stars, like bees, swarm around the center of bright globular cluster M15. This ball of over 100,000 stars is a relic from the early years of our Galaxy , and continues to orbit the Milky Way's center . ... The above image , taken in ultraviolet light with the WIYN Telescope , spans about 120 light years and shows the gradual increase in stars toward the cluster's center. ... About APOD | ...

... Too Close to a Black Hole . ... Credit: Robert Nemiroff ( MTU ) Explanation: What would you see if you went right up to a black hole ? ... On the left is a normal star field containing the constellation Orion . ... On the right is the same star field but this time with a black hole superposed in the center of the frame. ... In the distorted frame, every star in the normal frame has at least two bright images - one on each side of the black hole . ... Publications with keywords: black hole . ...

... We have simulated the observations of a very distant cluster of galaxies at high redshift. ... The simulations are made for the HST instruments FOC, WFPC II, and the Advanced Camera, and for an 8-m telescope on the ground equipped with adaptive optics. ... A comparison of the fields of view of post-COSTAR HST imaging instruments with the Advanced Camera (AC) and the ground-based adaptive optics camera (AO) is shown in Fig. 1 superimposed on the noise-free cluster simulation. ...

... Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer. December 18, 1999 . Irregular Galaxy Sextans A . ... Their newly formed, bright, blue star clusters found along beautiful, symmetric spiral arms are guaranteed to attract attention. But small irregular galaxies form stars too , like this lovely, gumdrop-shaped galaxy, Sextans A . ... About APOD > . ...

. " The Arecibo Observatory is sponsored by the National Science Foundation. Any opinions, findings and conclusions or recommendations . expressed in this publication are those of the author(s) and do not necessarily reflect the views of the National Science Foundation."

... Wendy Roberts . ... WENDY P.J. ROBERTS . ... Location of H1743-322 and H0632+18 determined with the scanning modulation collimator on HEAO-1 (M. Garcia, M. Conroy, R. Griffiths, E. Ralph, W. Roberts, and D.A. Schwartz). ... Location of variable x-ray sources near southern clusters of galaxies using the scanning modulation collimator on HEAO-1 (D. Schwartz, M. Conroy, M. Garcia, E. Ralph, W. Roberts, J. Schwarz, R. Doxsey, and M. Johnston). ... HARVARD-SMITHSONIAN CENTER FOR ASTROPHYSICS | ...

... In most situations, light helps us to see. But when it comes to looking at the night sky, light actually blocks our vision. ... You should be able to see around 2,500 stars with your naked eyes, but if you live in a big city or town, you probably see less than 10 stars on a normal night! This amazing space picture shows the shining star clusters and swirls of colourful gases of the Carina Nebula: an enormous expanse of gas, dust and stars lying deep in the heart of the Milky Way. ...

... Behemoth black hole found in an unlikely place . ... Spectacularly bright object in Andromeda caused by "normal" black hole . ... A spectacularly bright object recently spotted in one of the Milky Wayт??s neighboring galaxies is the result of a т??normalт?? stellar black hole, astronomers have found. ... Other scientists say ULXs are caused by material being dragged in by an intermediate-sized black hole formed from the merger of many stellar-mass black holes т?? about 1,000 times bigger than the...

... 853Ledlow+ J/AJ/109/853 VLA survey of Abell clusters. ... Ledlow+ 1995) ================================================================================ A 20 cm VLA survey of Abell clusters of galaxies. ... In this paper, we examine the radio detection statistics as a function of cluster morphological type, galaxy richness, and spatial location within the cluster galaxy distribution. ... This file table1a 137 511 Cluster radio survey (z ) 6- 7 A2 --- n_Abell *Abell number note 10- 15 F6.4 --- z []? ...

Elliptical galaxies Elliptical galaxies Rough subdivision · Normal ellipticals. ... Dwarf ellipticals (dE's). ... E dE BCD dSph 1013 - 1014 108 - 1013 107 - 109 109 107 - 108 300-1000 1-200 1-10 3 0.1­0.5 100 10­100 1­10 0.1­10 5­100 Elliptical galaxies Shapes of elliptical galaxies Elliptical galaxies Shapes of elliptical galaxies Elliptical galaxies Shapes of elliptical galaxies Elliptical galaxies Shapes of elliptical galaxies Elliptical galaxies ...

... НЕПРЕРЫВНОГО МАТЕМАТИЧЕСКОГО ОБРАЗОВАНИЯ . ... Кружок ?Олимпиады и математика? ... Московская математическая олимпиада . Заочный математический конкурс . ... Устные математические олимпиады . Олимпиады по программированию . Математический праздник . Математические регаты . ... Математические бои . Олимпиада по геометрии им. И.Ф.Шарыгина . ... Программа ?Math in Moscow? Научные конкурсы . Творческий конкурс . ... График олимпиад . ... XXVII Математический праздник . ...

... Structure of Data . ... Catalog . ... In SAI OCL Catalog, we introduce our work on investigation of the Milky Way system of open star clusters. The main goal of our study is a search for new clusters using huge surveys. 168 new clusters have been already discovered by us using J,H,Ks data from 2MASS point source catalog. ... For 141 new clusters, we found their physical parameters using J,H,Ks data from 2MASS catalog and, for a number of clusters, our UBVRI CCD observational magnitudes. ...

... Ultraluminous X-ray sources (ULXs) are located in external galaxies, their X-ray luminosities (10 39 - 10 41 erg/s) are thousand times greater than those of brightest black holes in the Galaxy. ULXs may be supercritical accretion disks around black holes of stellar masses (~10 Solar masses) like that in SS433, or they may be a hypothetical intermediate-mass black holes (hundreds - thousands Solar masses) with standard accretion disks. ... 2) The ULX progenitors were ejected from the star clusters. ...

... Next: Star Finding and Up: Image Restoration and Previous: Multiresolution and Astronomical . ... Design improvements continue to be made in the filter developed using mathematical morphology principles for the Infrared Astronomical Satellite ( IRAS ) images. The purpose of this filter is to eliminate Galactic cirrus emission from extragalactic fields. ... With an appropriate normalization, the filter curve was applied to each pixel in the image to remove the Galactic cirrus. ...

home resources > books . SEARCH ASP SITE: Match ALL words Match ANY word . ... Buy The Black Hole at the Center of our Galaxy at Amazon.com! Reviewed by Terrell Kent Holmes . In 1974 astronomers discovered a bright radio source at the center of the Milky Way Galaxy, in the direction of the constellation Sagittarius. It was an unknown quantity then, but astronomers now know that the object is a supermassive black hole causing a maelstrom of activity at the galactic center. ...

Next: The Model Up: No Title Previous: Radiopulsars as Sources of . In this section, we study the evolution of stellar populations on a time-scale of 10 Myr for a starburst љ occurring under conditions similar to those in the Galactic Center (see Lipunov et al. (1995d)[ 126 ]). We estimate the expected number of X-ray transient љ sources (NS + MS star), super accreting BH, and BH + supergiant binaries, all as functions of time elapsed after the burst. ...

... You are here: start €Ё correlator €Ё mpiscript . ... MPI . ... An important one in most cases is MPI_Comm_rank() which returns an ordinal integer number to each instance . ... Type $ mpirun -np 3 -machinefile machines env . ... On cuppa it is OMPI_MCA_ns_nds_vpid $ mpirun -np 6 -machinefile machines env | ... usr/bin/perl use Env; Env::import(); $rank=$OMPI_MCA_ns_nds_vpid; if ($rank == 0) { print "I am zero\n"; } elsif ($rank < 5) { print "I am $rank\n"; } else { die "Nothing to do\n"; } . ...

Astronotes Armagh Planetarium's Stellar Blog! ... Comets and Asteroids . ... Image credit:ESO/J.Emerson/VISTA. ... However others are less pessimistic and it has even been claimed that the mysterious ?Wow! signal? received in 1977 originated from the direction M55.б  Sadly, this still unexplained pulse of radio energy originated from a location rather to the northwest of M55 so I doubt if the source was this cluster (if indeed the signal was genuinely of extraterrestrial origin). ... Mysterious Wow! ...