... 2008 August 22 . Active Galaxy NGC 1275 . Credit: NASA , ESA , Hubble Heritage ( STScI / AURA ); . ... Explanation: Active galaxy NGC 1275 is the central, dominant member of the large and relatively nearby Perseus Cluster of Galaxies . ... This stunning visible light image from the Hubble Space Telescope shows galactic debris and filaments of glowing gas, some up to 20,000 light-years long. ... What keeps the filaments together? ... About APOD | ... A service of: ASD at NASA / GSFC . ...

We present Spitzer 3.6-160 О?m images, Spitzer mid-infrared spectra, and JCMT SCUBA 850 О?m images of the Sombrero Galaxy (NGC 4594), an Sa galaxy with a 109 Msolar low-luminosity active galactic nucleus (AGN). The brightest infrared sources in the galaxy are the nucleus and the dust ring. ...

... Centaurus A: X Rays from an Active Galaxy . ... CXO , NASA Explanation: Its core hidden from optical view by a thick lane of dust, the giant elliptical galaxy Centaurus A was among the first objects observed by the orbiting Chandra X-ray Observatory . ... The diffuse high-energy glow represents gas throughout the galaxy heated to temperatures of millions of degrees C. At 11 million light-years distant in the constellation Centaurus , Centaurus A (NGC 5128) is the closest active galaxy . ...

This is a list of astronomical data available on the World Wide Web which I put together for a lecture at the NEON archive school, held at ESO in August 2006, organized by: . ... Mostly) Large Area Surveys and Catalogues , where "large" means covering at least ~ 10% of the sky, although a selection of some smaller-area surveys is also included; . ... The NRAO VLA Sky Survey (NVSS) [1.4 GHz] . ... SuperCOSMOS Sky Surveys USNO Catalogues . ... ESO Online Digitized Sky Survey Guide Star Catalogues . ...

... SAO RAN RATAN-600 EXCURSIONS 40 YEARS of R/T REFERENCES . ... GPS radio sources . ... Thursday, April 30, 10-00 . ... Friday, December 19, 10-30 . ... N. Bursov, V. Chaykin, A. Storozhenko "Preliminary results of RATAN-600 antenna measurements with the help of the geostationary Satellite Turksat 2A/3A". ... The basic results. ... Information-analytical system of estimating the parameters of radio sources in continuum with the RATAN-600 (the message for a conference, IPA St. Petersburg). ......

... 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. ...

... Solar flare activity is produced by the processes of accumulation and release of energy in an active region. ... In the framework of study of solar active regions, producing powerful flares the researchers from the RATAN-600 radio telescope have detected sources with features in the form of a sharp drop in the intensity of polarized radiation in various parts of the recorded frequency range (2-16GHz), sometimes changing the sign of polarization. ...

home education > resources . SEARCH ASP SITE: Match ALL words Match ANY word . ... Astronomy Education Bibliography . ... Black Holes: An Introductory Resource List . ... On how our time differs from the early universe in terms of what galaxies are doing, and what role supermassive black holes play. ... Discusses how supermassive black holes powering the centers of galaxies may be more common than thought. ... On Hubble observations showing how common supermassive black holes are in galaxies. ...

... This thread contains a step-by-step recipe to extract EPIC (pn will be used as an example) light-curves of a point-like source, starting from a calibrated, concatenated event list (either produced with epproc or available as PPS product; it will bear the name: PN.fits in this thread). The content of this thread is the same as Extraction of a X-ray light curve for a point-like source (command-line version). ... in the lccorr GUI window (see Fig.7) define at least the following widgets: . ...

... Using multifrequency radio data obtained with the GMRT, VLA and RT, we are defining a sample of young radio AGN in the Spitzer FLS field which are associated with midinfrared sources. ... GMRT Observations The Spitzer extragalactic First Look Survey (FLS) field was observed with the Giant Metrewave Radio Telescope (GMRT, Figure 1), Pune, India, at 610 MHz in March 2004. ... Figure 1: Three of the antennas in the inner square kilometre of the Giant Metrewave Radio Telescope (GMRT). ...

... Sun images . ... Active areas . August : 2014 . ... The following regions with sunspots can be now observed on the Sun's surface . Group number . ... Group length (in degrees) . ... Beta . ... Coordinates and other characteristics of active regions are issued for August 09, 2014 00:31 UT The following H-alpha plages without spots can be currently observed on the Sun's surface . ... Coordinates and other characteristics of active regions are issued for August 09, 2014 00:31 UT . ...

. Authors: A.A. Suchkov , V.A. Marakov . Journal: Pis'ma Astron. Zh., 1976, v.2, p.38-385. Metallisity function of globular clusters in the Galaxy is constructed. It is found to have three "humps". This leads to a conclusion that there were three metal enrichment outbursts during the period of globular cluster formation. The constraints on the nature of metal sourses and on the early evolution of Galaxy are considered.

Next: Large-Scale Data Management . ... Table of Contents - Subject Index - Author Index - Search . Astronomical Data Analysis Software and Systems XIII . ... 314, 2004 . ... Resource Registries for the Virtual Observatory . ... Automated Determination of Stellar Population Parameters in Galaxies Using Active Instance-based Learning . T. Solorio, O. Fuentes, R. Terlevich, E. Terlevich, and A. Bressan . ... T. Estrada-Piedra, J. P. Torres-Papaqui, R. Terlevich, O. Fuentes, and E. Terlevich . ...

... Цвет: красный,серо-черный,серый мышиный,черный,экрю . Изысканная наволочка Oph?lia из мягкой перкали, 100% хлопка. ... Размер: 50 x 70 см.65 x 65 см.50 x 70 см.65 x 65 см.65 x 65 см.50 x 70 см . Цвет: синий . ... Материал верха: искусственная кожа . ... Материал подошвы: резина . ... Кеды Zenden Active. ... Материал: искусственная кожа. ... Возраст: Взрослый . ... Цвет: бордовый . Возраст от месяцев: 12 . ... Возраст: Детский . Размер: 80,92,104,98,86 . ... Материал стержня: CrMoV ; . ...

... Individual SEDs ­ upper limits constrain physical models Survival analysis for a sample Stacking ­ mean properties of sample Chandra X-ray data (faint point sources ) are photon-limited with low background = stacking in X-rays is very effective X-ray Stacking 2008-Apr-22 Astrostats Stacking basics: Make an image Define ... X-ray Stacking 2008-Apr-22 Astrostats Discussion! ... X-ray Stacking 2008-Apr-22 Astrostats ...

. R=4.7k-10 kOhm . Ca=Cc=2*Cb . Cb=Cd=1/(2*sqr(2)*pi*Fc*R) . Units: R [Ohm], Cx [F], Fc [Hz] . Contributor: Joakim жgren . Source: . ? . Copyright The Hardware Book Team 1996-2001. May be copied and redistributed, partially or in whole, as appropriate. Document last modified: 2001-06-07

... LABORATORY OF RADIO ASTRONOMICAL OBSERVATIONS . Radio sources identification is one of the most important tasks of the current radio astrophysics. ... Optical idetification. ... Optical identifications of subsample of steep spectra radio sources from RC catalog using 6m SAO telescope of SAO RAS: optical observations. ... Astronomy Reports. ... Identification of radio sources with data of various radio catalogs allows one to construct continual spectrum of the object and its radio structure. ...

Lectures . ... Home Lectures Lecture Series 2010-2011 Lecture Series 2010-2011 ? Greening the Earth Using Space Resources? by Greg Matloff . ... Lecture Series 2010-2011 . ... Beyond New York City . ... Observing Resources for Amateur Astronomers - Part 1: Beginning Observers . ... A History of the First Forty Years of the Amateur Astronomers Association . ... Amateur Astronomers Medal . ... 2016 Amateur Astronomers Association of New York Designed by Press Customizr Powered by . ...

August 3, 1998 . ... An example of the EUV large-scale chains revealed by the modified TRACE EUV images. (a) - The original TRACE EUV (171 A) mosaic image of August 3, 1998. Some thin chains and threads are seen inside the active complexes A and B in the north-west and south-west sectors of the disk. Large-scale structures outside the complexes are hardy visible. (b) - The same TRACE image, but after a modification. ... Back to the page of the TRACE chains . ... Last update: 9 August 1998 . ...

The Variable Gamma-Ray Source 2CG 135+01 ApJ, 497:L89-L91, 1998 7 h gamma AGN variability . gamma-radio-AGN-variability ADS query . ... Model for the High-Energy Emission from Blazars 1993ApJ.. ... Possible Production of High-Energy Gamma Rays from Proton Acceleration in the Extragalactic Radio Source Markarian 501 astro-ph/9803241 K.Mannheim . ... A theoretical unifying scheme for gamma-ray bright blazars astro-ph/9807317 G. Ghisellini, A. Celotti, G. Fossati, L. Maraschi, A. Comastri . ...