... 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 . ...

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• Sunspots and active regions January 10, 2007
• Sunspots and active regions January 10, 2012
• Sunspots and active regions January 01, 2015

... 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 . ...

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• Астронет > Active Region 1002 on an Unusually Quiet Sun
• An Active Region of the Sun
• Active Regions, CMEs, and X Class Flares

... 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 | ...

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• APOD: 2004 July 26 - A Large Active Region Crosses the Sun
• APOD: 2000 June 8 - Active Regions, CMEs, and X Class Flares
• APOD: 2002 August 1 - Sunspots and Solar Active Regions

LARGE-SCALE PHENOMENA AT THE SUN ASSOCIATED . WITH FILAMENT ERUPTIONS OUTSIDE ACTIVE . ... Considering the 12.09.1999 event as an example, we analyze manifestations of large-scale disturbances associated with coronal mass ejections (CMEs) caused by filament eruptions outside of active regions. ... The filament eruption occurred in relatively weak magnetic fields, but it was accompanied by larger-scale phenomena than flare events do. ...

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• Oct-Nov 2003
• Chains and CMEs
• Filament eruption of 12.09.1999

... Near-IR broad-band imaging of V1318 Cygni reveals the presence of two distinct stellar components oriented north-south, a result recently reported by Aspin et al. ... The distribution of the high density molecular gas traced by the CS J emission is highly concentrated around V1318 and V1686 Cygni, while the total column density of gas traced by the J shows a ridge morphology centered on these sources. ... A molecular outflow has been detected in CO J . ...

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• APOD: June 16, 1998 - An Active Region of the Sun
• APOD: May 15, 1998 - TRACE and the Active Sun
• A collection of images

... Armagh Observatory, College Hill, Armagh BT61 9DG, +44 (0)28 3752 2928 . ... Upflows at the edges of active regions - called AR outflows , are studied using multi-instrument observations. ... The evolution of the photospheric magnetic field associated with the footpoints of the upflow region and the plasma properties of active region upflows are investigated aiming at providing such information for benchmarking data-driven modelling of this solar feature that is presented in Galsgaard et al. ...

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• Solar Active Region 10999 by Deirdre Kelleghan | International Year of
• J.G. Doyle, Research Astronomer

... 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. ...

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• Solar system sector, archive 1993
• Solar system sector, archive 1994
• Solar system sector, archive 2008

NATIONAL ASTRONOMY AND IONOSPHERE CENTER . ... Astronomy . ... During the last 48 hours, solar activity of moderate-to-large intensity was registered with two class X events (one was a maximum X5), and also events of class M and C. Two Coronal Mass Ejections (CME) occurred in March 4 and 5 reached the Earth this (Thursday) morning, March 8 at 11 UT (7 AST), and large variations in the Earth's magnetic field and energetic particle precipitation into the poles are expected. ... Arecibo Observatory €а . ...

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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. ...

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• STScI Active Galaxies Lunch Talk Series
• Spitzer and JCMT Observations of the Active Galactic Nucleus in the Sombrero

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 ...

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... 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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• http://hea-www.harvard.edu/AstroStat/Stat310_1011/ds_20110329.pdf
• Marker Analysis Routines in SAOtng
• V. Kashyap and J. Drake Figure 1a - Interactive Figure Using the Ov Applet

... Basic Research results General information Main characteristics of the Radio telescope Observing programs General view of the antenna array Main research areas Principle of generation of radio images Radio telescope's beam Receiving systems Main characteristics of the base receiving-recording complex Calibrations Data archive and databases Publication of data Possibilities of observing the structure and dynamics of microwave activity SSRT - Research results . ...

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... 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 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 . ...

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• A Program Complex Equipped With a GUI for Investigation of 3D Structure of
• Adaptive and Active Optics

e-mail: podgorny@inasan.ru . Institute of Astronomy RAS . ... Spectrum of solar flare protons // Journ. ... The active region magnetic flux correlation with flare appearance. ... Podgorny A. I., Podgorny I. M. Solar Flare Numerical Magnetohydrodynamic Simulation and Solar Flare Model. ... Podgorny A. I., Podgorny I. M. MHD simulation of magnetic field configuration above the active region NOAA. ... Podgorny I. М., Podgorny A. I. The active region magnetic field association with solar flares. ...

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... Professor Esko Valtaoja (Turku University, Director of Tuorla Observatory): "The problem of high-energy emission from AGN" . ... Associate Professor Harry Lehto (Tuorla): "Radio observations of GRS1915+105" . ... Dr. Alexander Riehokainen (Tuorla, Academy Researcher): "Multiwavelength observations of the Sun over a full activity cycle" . ... Ilona Torniainen (Metsahovi, PhD student): "Inverted-spectrum radio sources" . ... A Study of solar polar zone using eclipse data with RATAN-600 . ...

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• Russian-Finnish Symposium
• Group IAG
• Source Positions

... Region 9373 (S07W43) produced several small C-class flares. ... 1610 0824 //// 0824 SVI U RSP 025-042 III/1 . 1620 + 0844 //// 0851 SVI C RSP 025-170 III/2 . 1630 + 0901 //// 0902 LEA C RSP 025-150 III/1 . 1640 + 0953 //// 0956 LEA C RSP 025-080 III/1 . ... 1910 + 1036 1042 1059 SVI 3 FLA S06W15 SN ERU 9373 . 1910 1036 1041 1055 F RBR 3000 20 9373 . ... 2210 + 0846 0847 0847 SVI G RBR 410 64 9373 . 2210 + 0846 //// 0847 SVI C RSP 025-180 III/2 9373 . ...

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• Публикации

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. ...

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• Solar Physics

T H E AU S T R A L I A T E L E S C O P E C A M PA I G N T O S T U DY SOUTHERN CLASS I METHANOL MASERS M.A.Voronkov (ATNF), K.J.Brooks, A.M.Sobolev, S.P.Ellingsen, A.B.Ostrovskii, J.L.Caswell contact: Maxim.Voronkov@csiro.au Introduction Class I methanol masers (e.g. 9.9 , 25, 104 GHz ) Maser spots are spread around the protostar location Avoid strong infrared ... This fact supports the idea that some class I masers reside in the interface regions of outflows. ...

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• http://www.atnf.csiro.au/research/masermeeting/web_papers/904_Loenen.pdf
• RAFCAP (Radio Astronomy Frequency Committee in the Asia-Pacific region)
• casacore: images/Regions/WCDifference.h Source File

... mm] CAMCOORD1 2 translation in X . ... mm] CAMCOORD2 origin in SACCOORD - X . ... mm] origin of telescope frame in SACCOORD - X . ... X-coordinate of center of PIXCOORD1 pixel (RAWX0/RAWY0) in CAMCOORD1 system . ... absolute uncertainty associated with X0 (currently unused) . ... absolute uncertainty associated with EULER_PHI (currently unused) . ... absolute uncertainty associated with EULER_THETA (currently unused) . ... absolute uncertainty associated with EULER_PSI (currently unused) . ...

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• Node-specific Exposure Maps
• Algorithm