... These Frontier Fields will combine the power of HST with the natural gravitational telescopes of high-magnification clusters of galaxies. ... We are soliciting gravitational lensing maps for the last four Hubble Frontier Fields clusters (MACSJ0717.5+3745, MACSJ1149.5+2223, AbellS1063, and Abell 370) based upon the exceptionally deep HST FF imaging and other new ancillary data. ... For the full set of proposal instructions and requirements, see the FY16 Frontier Fields Lensing Map Call for Proposals....

... 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. ...

... Credit Copyright: Data - Hubble Legacy Archive , ESA , NASA ; Processing - Al Kelly Explanation: Active galaxy NGC 1275 is the central, dominant member of the large and relatively nearby Perseus Cluster of Galaxies . ... Publications with keywords: Perseus cluster - active galaxy - magnetic field - X-ray - radio - multiwavelength . Publications with words: Perseus cluster - active galaxy - magnetic field - X-ray - radio - multiwavelength . ... Nearby Spiral Galaxy NGC 4945 . ...

. The tar command can be used to turn several files into a single tarfile . tar can also be used to bundle up whole directories before transferring them to another system. Use tar whenever you want to transfer a number of files or directories between different UNIX systems. Creating an archive file . Making a tarfile smaller . Examine the contents of a tarfile . Unpacking a tar file .

... Editor's choices for the most educational Astronomy Pictures of the Day about spiral galaxies: . APOD: 2003 March 10 - M101: The Pinwheel Galaxy . Explanation: Why do many galaxies appear as spirals ? ... One result is that M101 , also called the Pinwheel Galaxy , has several extremely bright star-forming regions (called HII regions ) spread across its spiral arms. ... APOD: 2003 April 13 - NGC 1365: A Nearby Barred Spiral Galaxy . ... NGC 1365 is a member of the Fornax Cluster of Galaxies . ...

... 1994: . Deep CCD images of the bright gamma-ray bursts GRB790418 and GRB790613 localization regions were obtained for the first time. In both cases, a faint blue star-like object (V = 24.5 m , BV m ) was detected within the region of localization of gamma-ray bursts. ... Based on sixty daily instantaneous spectra of the object SS433, obtained on the RATAN-600 in April-May 1994, we traced its variability in four very powerful flares at five frequencies. ... Archive . ...

... Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer. June 21, 1999 . The Galactic Center in Infrared . ... Explanation: The center of our Galaxy is a busy place. In visible light , much of the Galactic Center is obscured by opaque dust . In infrared light , however, dust glows more and obscures less, allowing nearly one million stars to be recorded in the above photograph . ...

... Hughes STX/COSSC NASA/GSFC, Greenbelt, MD 20771 . ... The exploration of hypertextual data presentation at the COSSC was facilitated by the creation of tables of data, in electronic form, which describe the BATSE and EGRET datasets available in the Compton Observatory archive. ... As our store of data continues to grow, we will continue to explore new and novel ways in which hypertext allows the data in the COSSC archive to be presented and selected. 56 kB PostScript reprint . ...

... ATNF Home . About ATNF . ... About ATNF overview . ... Governance overview . Australia Telescope Steering Committee . ... Australia Telescope User Committee . ... Our people overview . ... Parkes radio telescope . ... Visiting Parkes radio telescope . ... Parkes radio telescope webcam . ... Orientation and Evolutionary Effects in Active Galactic Nuclei . ... In this invited review, I present observational results of Active Galactic Nuclei that my colleagues and I have recently obtained. ...

http://hubblesite.org/newscenter/archive/releases/1996/22/text/ Probing the mysterious heart of the Crab Nebula, the tattered remains of a stellar cataclysm witnessed more than 900 years ago, astronomers using NASA's Hubble Space Telescope have found that the Crab is even more dynamic than previously understood, based on a cosmic "movie" assembled from a series of Hubble observations. ... Because of this flickering, the neutron star is also called a "pulsar." ...

Astronotes Armagh Planetarium's Stellar Blog! ... Space Flight . ... Rockets . Earth Satellites . ... Posted on June 5, 2015 | 11 Comments Our Solar System is vast. ... Continue Reading.. Posted on August 20, 2014 | No Comments The good news first: a major aerospace contractor is researching how to build a reusable spaceplane that could dramatically cut the cost of accessing low Earth orbit. ... Posted on June 26, 2014 | ... Posted on May 28, 2014 | ... Posted on April 17, 2014 | ...

... Archives . ... Quote of the Week, Aug 31, 2007 . ArXiv] NGC 6397 Deep ACS Imaging, Aug. 29, 2007 . ... Comparison of decision tree methods for finding active objects by Y. Zhao and Y. Zhang . The authors (astronomers) introduced and summarized various decision three methods (REPTree, Random Tree, Decision Stump, Random Forest, J48, NBTree, and AdTree) to the astronomical community. ... Shortcomings of decision tree methods were also described. ... Chandra Blog . ... SAMSI AstroStat Prog. ...

... Display (spectra, total power). ... Using the data archive. ... entering cmds, editing cmd lines, input from files, batch, run. constants, variables,arrays, structures, operators, procedures, functions. programming in idl . ... A user would call arch_gettbl() to input the table (or a subset of it). corfindpat() can create subsets of the table. arch_getdata() or arch_getonoff() can be used to read in the spectra. ... input the data (spectra) for a subset of the archive table: arch_getdata () . ...

I. Installation . ... AMPLE package distributive (created with program InstallShield for Microsoft Visual C++) has been downloaded on FTP server of IAA RAS as archive Ample.zip. ... Note: If the window "file download" appears, select Open... switch button, then press OK button. ... The shortcut for AMPLE will be linked with this folder, and auxiliary files will be created here during AMPLE work. ... When running AMPLE all auxiliary and new configuration files are created in the WORK folder. ...

. In the heart of an active galaxy, matter falling into a supermassive black hole somehow creates jets of particles traveling near the speed of light. For active galaxies classified as blazars, one of these jets beams right toward Earth. NASA/Goddard Space Flight Center Conceptual Image Lab

home publications > mercury . ... Rings of Creation . ... In 1755, Immanuel Kant had the remarkable insight that stars and planetary systems form by the gravitational collapse and rotational flattening of interstellar clouds. Later in the 18th century, Marquis Pierre Simon de Laplace refined Kant s idea by suggesting that planets condensed from rings produced at the edge of a contracting disk while the Sun formed at the center a picture thereafter known as the Nebular Hypothesis. ...

... Dept. for Physics of Stars&Galaxies . ... Using a database view Sloan Digital Sky Survey (SDSS), containing almost a million spectra created 15,000 sample galaxies with active star formation, which is used for various studies and physical state of evolution of galaxies. ... Star clusters of the Galaxy . The project MWSC (Milky Way Star Clusters) directory using 2MASS, which includes nearly 500 million vision to the limit Ks = 15.3, analyzed more than 4,000 cluster-like objects in the galaxy. ...

... Home Lectures Lecture Series 2011-2012 Lecture Series 2011-2012 ? тАЬA Ray of Light in a Sea of Dark (Matter)тАЭ ? Charles Keeton . ... Charles Keeton , associate professor of physics and astronomy at Rutgers University and faculty director of the Aresty Research Center for Undergraduates , will speak to the AAA Friday, March 2, on тАЬA Ray of Light in a Sea of Dark (Matter).тАЭ The free public lecture begins at 6:15 p.m. in the Kaufmann Theater of the€а American Museum of Natural History . ...

XMM-Newton Science Analysis System Page: 1 om atindex August 15, 2005 Abstract Create/maintain an index of OM at- eld data 1 Instruments/Modes Instrument Mode OM Slew 2 Use pipeline processing yes interactive analysis no 3 Description This task creates and maintains an index of an archive of OM at- eld calibration data which is used by the pipeline. ... The task can be run in two modes, create and insert. In create mode a new, empty at- eld archive index is created. ... Archive index 2. ...

Bright Supernova - Archives On these pages you will find references to Supernovae which have faded into oblivion. ... Finally, in 1999, when I took over the International Supernova Network's Latest Supernovae page I retitled the main page "Latest Supernovae", BUT, it's the "Latest Supernovae" page of the "Bright Supernovae" pages which are also sub-pages of ISN. ... Brightest supernova in 2005 . ... Brightest supernova in 2002 . ... Brightest supernova in 2000 . ... Brightest supernova in 1999 . ...