... 2014 February 24 . The Cloudy Cores of Active Galaxies . Image Credit: NASA's GSFC , W. Steffen ( UNAM ) . Explanation: What would it look like to travel to the center of an active galaxy? Most galactic centers are thought to house black hole s millions of times more massive than our Sun. The spaces surrounding these supermassive black holes may be far from dormant, however, flickering in many colors and earning the entire object class the title of Active Galactic Nuclei (AGN). ...

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• APOD: 2002 February 2 - Centaurus A: The Galaxy Deep Inside
• APOD: 2000 June 7 - Up Close to Jupiter's Moon Io
• APOD: 2013 November 16 - Active Comet ISON

Astronomy Picture of the Day . Sun 360: STEREO Captures Views of the Entire Sun . ... Credit Copyright: STEREO Project , NASA Explanation: For the first time, the entire Sun is being imaged all at once. ... The above image shows nearly the entire Sun as it appeared one day last week, a few days before maximum exposure. Yesterday, the dark gap in the center closed completely, and STEREO was able to beam back to Earth full 360 degree images of the closest star . ... NASA Official: Jay Norris. ...

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• Journal "Peremennye Zvezdy"
• A Large Active Region Crosses the Sun
• The Cloudy Cores of Active Galaxies

... Bad Astronomy . ... Bitesize Astronomy . ... Last week's Snack talked about how black holes can affect the environment around them in such a way as to be very bright . ... It's a common misconception that black holes always have matter swirling into them. ... As this matter gets closer and closer to the black hole it piles up and a large, fairly flat disk forms. This is called the accretion disk , because matter from this disk accretes (that is, falls in) on the black hole. ... 2008 Phil Plait. ...

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... Sun images . ... Active areas . February : 2016 . ... 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 February 09, 2016 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 February 09, 2016 00:31 UT . ...

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• Sunspots and active regions February 10, 2014
• Sunspots and active regions February 10, 2011
• Sunspots and active regions February 10, 2010

... May 15, 1998 . TRACE and the Active Sun . Credit: Courtesy CFA , TRACE Team , NASA . ... It shows graceful arcs of intensely hot gas suspended in powerful looping magnetic fields which soar above a solar active region. ... By operating the TRACE instruments during the Sun's increasingly active phase, scientists hope to explore the connections between complex solar magnetic fields and potentially hazardous solar eruptions. ... About APOD > . ... NASA Technical Rep.: ...

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• APOD: June 16, 1998 - An Active Region of the Sun
• APOD: 2000 February 28 - The Sombrero Galaxy from VLT
• APOD: October 18, 1999 - NGC 3603: An Active Star Cluster

Table of Contents - Subject Index - Author Index - . Astronomical Data Analysis Software and Systems IX . ... Reduction of Adaptive Optics Images . ... GBT Active Optics Systems and Techniques . ... A User-Friendly Way to Optimize Adaptive Optics: NAOS Preparation Software . ... QuickLook Data Reduction Pipeline - Keck Adaptive Optics Real Time Data Reduction Software . ... NAOS Computer Aided Control: an Optimized and Astronomer-Oriented Way of Controlling Large Adaptive Optics Systems . ...

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Astronotes Armagh Planetarium's Stellar Blog! ... Stars . ... Telescopes and Observatories . ... The majestic star-forming region in the Lagoon Nebula. The pale ring to the right is an internal reflection in the telescope.€а (Image credit: ESO/ VPHAS+/ V. Kalari and J. Vink (Armagh Observatory) . ... The 18 component images were further processed twice. ... Venu and his colleagues use images like this to identify individual young forming stars in the Lagoon Nebula and determine their ages. ...

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• Kepler 36b and c: Too Close for Comfort | Astronotes
• Return to Comet Tempel 1 | Astronotes
• Wonders of the February Night Sky | Astronotes

... You are here: start €Ё lbaops €Ё lba-opshobart12-13feb13 . ... VLBI Schedule . ... lbaops:lba-opshobart12-13feb13 . Annual LBA Operations, Technical, eVLBI and Networking Meeting . ... Please review the Action items from the 2012 LBA ops meeting . ... Block Agenda for 2013 Ops/technical meeting . Detailed Agenda for 2013 Ops/technical meeting . Actions list from 2012 Ops/technical meeting . width=1000% http://www.atnf.csiro.au/vlbi/UTAS_map.png"UTAS Map" UTAS Map - click for pdf** . ...

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• lbaops:lba-opsperth11-12feb14 [ATNF VLBI Wiki]
• VLBI Wiki | Main / LBA-OpsHobart12-13Feb13
• VLBI Wiki | Main / LBA-OpsPerth11-12Feb14

... 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). ......

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• Quasars and Active Galactic Nuclei
• HwB: Active Filter: Bessel 12dB Highpass
• HwB: Active Filter: Bessel 18dB Lowpass

... ESO PR Photo 07a/01 . ... ESO PR Photo 07b/01 . ... Caption : PR Photo 07a/01 shows Comet Hale-Bopp , still active at a distance of nearly 2,000 million kilometres from the Sun. ... This is quite unusual for a comet and is clearly confirmed on the present photo ( PR Photo 07a/01 ) from the WFI camera on the MPG/ESO 2.2-m telescope at La Silla, obtained a few days ago. ... ESO-Chile . ... ESO PR Photos 07a-b/01 may be reproduced, if credit is given to the European Southern Observatory (ESO). ...

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• Zooming in on the distant active galaxy PKS 1830-211 | ESO
• The Dreadful Beauty of Medusa | ESO
• ESO - Clustering Measurements of Active Galactic Nuclei

... Continent-sized radio telescope takes close-ups of Fermi active galaxies . Observations solidify a theory about radio-emitting jets emanating from supermassive black holes at the centers of active galaxies. ... The study solidifies the link between an active galaxy's gamma-ray emissions and its powerful radio-emitting jets. ... All this points to the team's conclusion that the portion of an active galaxy's radio jet closest to the galaxy's core is also the source of the gamma-rays Fermi detects. ...

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• Rosettaт??s target comet is becoming active | Astronomy.com
• NASA satellite reveals active galaxies are different near and far |
• Astronomers discover close-knit pairs of massive black holes | Astronomy.com

... Authors: David R. Soderblom 1,2 , Jeremy R. King 1 , Todd J. Henry 3 We have obtained high-resolution echelle spectra of 18 solar-type stars that an earlier survey showed to have very high levels of Ca II H and K emission. ... Three of these probable single stars also lie more than 1 magnitude above the main sequence in a color-magnitude diagram, and appear to have a kinematical association with the pre-main sequence multiple system HD 98800. ... huizinga@stsci.edu . Last updated, March 23, 1998 . ...

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• Archive for February
• Active galaxies and black holes
• Spitzer and JCMT Observations of the Active Galactic Nucleus in the Sombrero

... Armagh Observatory, College Hill, Armagh BT61 9DG, +44 (0)28 3752 2928 . On Friday 15th February the recently discovered Apollo-class near-Earth asteroid 2012 DA14 will make a close pass by the Earth. The asteroid will come within about 34,000 km (21,000 miles) of the centre of our planet at 7.26 p.m. That is, within the ring of geostationary communication satellites which orbit at some 35,800 km above the surface of the Earth. ... Last Revised: 2013 February 11th . ...

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• J.G. Doyle, Research Astronomer
• Terry Mosely's Bulletins
• Solar Active Region 10999 by Deirdre Kelleghan | International Year of

... X CB (X) Opening of a set X by a disk B. Closing of a set X by a disk B. Science-Driven Feature Selection (a) (b) Mount Wilson Classification The Mount Wilson classification scheme groups sunspots into four classes based on the complexity of magnetic flux distribution in associated active regions [1]: class : groups dominated by a single unipolar sunspot class : a pair of sunspots of opposite magnetic ... Convex hulls are utilized to measure polarity mixture in (j). ...

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• Relations
• PAUL J. GREEN - Page de la Maison
• The AstroStat Slog astronomers

To appear in "Fourth Workshop on Robotic Autonomous Observatories (2015)"RevMexAA(SC) MASSIVE PHOTOMETRY OF LOW-ALTITUDE ARTIFICIAL SATELLITES ON MINI-MEGATORTORA S. Karpov, 1, 3 E. Katkova,2 G. Beskin, 1, 3 A. Biryukov3,4 S. Bondar,2 E. Davydov5 E. Ivanov,2 A. Perkov,2 V. Sasyuk3 RESUMEN Favor de prop orcionar un resumen en espanol. ... The nine-channel Mini-MegaTORTORA (MMT-9) optical widefield monitoring system with high temporal resolution system is in operation since June 2014. ...

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• astro-ph

... 2 April 1999 . The Nobeyama Radioheliograph data show that in the microwave range, besides large-scale trans-equatorial chains (see, e.g., the May 11-15, 1993 and November 1-4, 1993 events), there are also many examples displaying large and strongly evolving "longitudinal" or "internal" chains connecting remote active regions inside an active zone in one (northern or southern) hemisphere (the August 20-September 3, 1998 event). ... Last update: 2 April 1999 . ...

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• Non-traditional methods of geophysical investigations and active plasma
• Space Projects Closed
• IZMIRAN - Laboratory for ionosphere discontinuity investigation: The

ESO PR 06/96; 16 February 1996 . ... In the early morning of January 31, 1996, Japanese amateur astronomer Yuji Hyakutake made his second comet discovery within five weeks. ... Information about some earlier comet encounters may be found in the Appendix at the end of this Press Release. ... By a straightforward extrapolation of the current brightness, it would appear that Comet Hyakutake will reach magnitude 1 on March 25, 1996, at the time of the closest approach to the Earth. ...

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• Galaxy Gallery Page III
• The Galaxy Gallery: Messier Objects
• U of O High Energy Physics Seminars

... 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. ...

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... A radio galaxy is a galaxy that emits an unusually big amount of energy at radio wavelengths. ... Inside of each galaxy with an active nucleus (radio galaxies are among them) there must be a system of a "central machine" responsible for the colossal amount of the emitted energy from radio to gamma ranges. ... Sometimes a radio source in an active galaxy may flare again if the needed conditions appear (a new portion of matter would fall into the furnace of the "central machine"). ...

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• CH Cyg
• X-rays binary Cyg X-3

... RADIATION ECOLOGICAL MONITORING . ... AUTOMATIC STATION . ... Prototypes for various designs of such stations were developed, manufactured and field-tested at S.P. Korolev RSC Energia. Automatic stations for environmental monitoring systems undergoing operational tests at S.P. Korolev RSC Energia . ... In the background - automatic radiation environmental station for monitoring atmospheric pollution with radioactive substances and dust. ... Official WEB-site of S.P.Korolev RSC Energia . ...

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• S.P.Korolev RSC Energia - MIR ORBITAL COMPLEX
• S.P. Korolev RSC Energia - News
• S.P.Korolev RSC Energia - News