... 2008 September 24 . Active Region 1002 on an Unusually Quiet Sun . ... Explanation: Why has the Sun been so quiet recently? ... Our Sun has shown few active regions -- that house even fewer associated sunspots -- for over a year now, and such a period of relative calm is quite unusual. ... Visible above, this region, dubbed Active Region 1002 (AR 1002), was imaged in ultraviolet light yesterday by the SOHO spacecraft , which co-orbits the Sun near the Earth. ... About APOD | ...

... Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer. June 16, 1998 . An Active Region of the Sun . Credit: A. Title ( Stanford Lockheed Institute ), TRACE , NASA . ... This false-color image depicts an active region near an edge of the Sun . Hot plasma is seen exploding off the Sun's photosphere and traveling along loops defined by the Sun's magnetic field . ... About APOD > . ...

... Active Region 1002 on an Unusually Quiet Sun . ... Credit Copyright: SOHO Consortium , EIT , ESA , NASA Explanation: Why has the Sun been so quiet recently? ... Our Sun has shown few active regions -- that house even fewer associated sunspots -- for over a year now, and such a period of relative calm is quite unusual. ... A few days ago, however, a bona-fide active region -- complete with sunspots --appeared and continues to rotate across the Sun's face. ... A Filament Across the Sun . ...

... Sun images . ... Sun flares . ... Active areas . September : 2015 . ... The following regions with sunspots can be now observed on the Sun's surface . Group number . ... Group length (in degrees) . ... Coordinates and other characteristics of active regions are issued for September 09, 2015 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 September 09, 2015 00:31 UT . ...

. Home . News . Gallery . Events . Twitter . Press Releases . Links . Contact Us . Calendar . Press & Web Coverage . Previous . Next . List . Deirdre Kelleghan kept observing the Sun and she sent us a new wonderful drawing: "Active Region 10999, June 20th 2008 13:45 UT; PST 40/8mmTVP eyepiece/50X upscaled by eye; soft pastels and graphite on black paper". Thank you, Deirdre! . Tuesday, 24 June 2008 01:52 . International Year of Astronomy, Ireland National Node . [Back To Top] .

Data Archive . Video-records archive . ... 1997 | ... Time (UT) Counter Remarks _______________________________________________________________________________ 05.01. 10:29:17 2:06:42 scan disk 11:58:23 2:11:19 active regions 06.01. 09:49:51 2:12:17 scan disk 10:56:24 2:19:10 active regions 12.01. 09:39:12 2:19:59 scan disk 10:03:41 2:27:51 active region 10:05:09 2:28:34 filament 10:07:17 2:29:10 ...

... Towards a Truly Unified Model of AGN . ... The Unified Model holds that the aspect-dependent effects primarily determine the nature of the active galactic nucleus that we observe. ... The full postscript file can be obtained here: . The PASA Latex file can be obtained here: . The postscript file of Fig 1 can be obtained here: . ...

Galaxies are diffuse objects which are imaged against a background of finite brightness and noise. Galaxies which have the maximum contrast with respect to this background are the ones that are first discovered. ... These galaxies have been missed to date but active surveys for them are underway. ... In this page we present several examples of these newly discovered Low Surface Brightness galaxies as well as examples of high surface brightness galaxies. ...

New 12CO J = 4-3 and 13CO J = 3-2 observations of the N 159 region, an active site of massive star formation in the Large Magellanic Cloud, have been made with the NANTEN2 and ASTE submillimeter telescopes, respectively. ... The 13CO J = 3-2 data were newly taken for the present work. ... The N 159 E clump is associated with cluster(s) embedded, as observed at 24нјm by the Spitzer MIPS, and the derived high temperature, 80 K, is interpreted as being heated by these sources. ...

... Pre-university education . ... Samara region . SSAU History . SSAU roadmap . ... Samara State Aerospace University (SSAU) will take an active part in the work of space activities of the United Nations organization (UNO). ... The road map shape on inclusion of Samara University into implementation of the UN Program on Space Applications was outlined at the roundtable discussion with the University teachers and specialists and at the meeting with SSAU Rector Yevgeniy Shakhmatov. ...

... 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. ...

... A database on solar active regions has been implemented in IDL (Interactive Data Language). ... Full-disk 17 GHz radio maps produced by the Nobeyama Radioheliograph provide the basis for the database. Researchers of solar activity often need to access solar active region data. ... So far, we have created an IDL-based database on daily active region data from 1992 July 1 to 1994 December 31 (NOAA 7213 thru NOAA 7821) 2 . ... number of active regions visible on the disk; . ... IDL 1 . ...

... Tonight's Sky . ... Sky this Month . ... Astronomy for Kids . ... Hubble sees NGC 7090 т?? an active star-forming galaxy . ... This image portrays a beautiful view of the galaxy NGC 7090, as seen by the NASA/ESA Hubble Space Telescope. ... This image portrays a beautiful view of galaxy NGC 7090, as seen by the NASA/ESA Hubble Space Telescope. ... These structures trace the location of ongoing star formation, visual confirmation of recent studies that classify NGC 7090 as an active star-forming...

... Science User Portal . ... ESO, the European Southern Observatory . ... Travel and Contacts . ... Survey Telescopes . ... New insight into the central region of the active galaxy NGC 1068, at increasing magnification. Image a (left) is a colour composite of NGC 1068, obtained with the Hubble Space Telescope (HST); showing stellar light in blue, oxygen ionized by the active nucleus in yellow, and inonized hydrogen in red. ... Image c (right) is a sketch of the dust structure of the innermost region. ...

... Radio astronomers at Arecibo Observatory observe a wide variety of phenomena in the Milky Way and in other galaxies. ... Some REU projects are carried out on pre-existing data, and others rely on obtaining new data. ... Deriving a new shape model from existing radar images has been a popular student project in past years, and there are data sets that could be used for this. We are collecting thermal infrared emission data for many of the near-Earth asteroids that are also observed with radar. ...

Large-scale activity in solar eruptive events of October-November 2003 by SOHO/EIT data . ... We analyze large-scale disturbances associated with extremely powerful flares and coronal mass ejections (CMEs) occurred during two passages across the solar disk of a grandiose complex of three active regions in October–November 2003 using SOHO/EIT imaging data. ... In events repeating with short time intervals, the main dimmings observed show clear homology by their form and location. ...

... Panoramic spectroscopy of galaxies with star-formation regions. a study of SBS 1202 + 583" . Hakopian, S. A.; Balayan, S. K.; Dodonov, S. N.; Moiseev, A. V.; Smirnova, A. A. 2012, Astrophysics, v.55, p.1 . The origin of gas in extended narrow-line regions of nearby Seyfert galaxies - I. NGC 7212" . ... Smirnova, A. A. ; Moiseev, A. V.; Afanasiev, V. L. 2010, MNRAS, v.408, p.400 (astro-ph/1006.5547) . ... Studying of some Seyfert galaxies by means of panoramic spectroscopy." ...

... The color composite image of Centaurus A reveals the lobes and jets emanating from the active galaxy?s central black hole. ... Astronomers have a new insight into the active galaxy Centaurus A (NGC 5128), as the jets and lobes emanating from the central black hole have been imaged at submillimetre wavelengths for the first time. ... Centaurus A hosts a very active and highly luminous central region, caused by the presence of a supermassive black hole is the source of strong radio and X-ray emission....

Nowadays at the Department the experimental and theoretical investigations, including astronomical and ionospheric observations, active experiments with space vehicles are taking place. ... Solar Corona physics and erruptive phenomenae. ... Stellar astronomy. ... The Department has organized and put into practice more then 50 expeditions for observation of Solar ecllipces, aurorae polaris, comets, meteor streams, controlled space experiments, and also for investigations of geophysical characteristics. ...

An X-ray/radio sample of Active Galactic Nuclei Nuria Fonseca Bonilla Tutor: Stefano Bianchi Matteo Guainazzi An X-ray/radio sample of Active Galactic Nuclei Brief introduction Results Conclusions An X-ray/radio sample of Active Galactic Nuclei 1. ... Classification of AGN radio loud (powerful jets): e.g: radio galaxies, quasars, blazars... radio quiet radio quiet quasars (RQQs) Veron `06: MABS < -23 Seyfert Veron `06: MABS > -23 An X-ray/radio sample of Active Galactic Nuclei 3. ...