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

... Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer. 2007 April 2 . An Active Sunspot Viewed Sideways . Credit Copyright : Hinode , JAXA , NASA . Explanation: Why are there dark spots on the sun? ... In the center of the above image is a sunspot, but not seen in the usual orientation --this sunspot is seen sideways. ... About APOD | ... NASA Official: Phillip Newman Specific rights apply . ...

... Projects . Data transfer . ... PPTA projects and allocations . ... Time active (d) . ... Not active . ... PPTA data release 2 . ... unallocated Study timing noise in PPTA pulsars . ... unallocated Reprocess P140 data with PPTA pipeline . ... unallocated Consider the optimal observing strategy for PPTA pulsars . ... unallocated Application of cyclic spectroscopy to PPTA pulsars . ... Profile Domain Pulsar Timing: Developing and applying techniques to PPTA data. ... Tue, 24 Nov 15 03:36:53 +0000 . ...

... A Year on the Sun . ... 26.04.2013 . ... Credit Copyright: NASA , Solar Dynamics Observatory Explanation: Our solar system's miasma of incandescent plasma , the Sun may look a little scary here. The picture is a composite of 25 images recorded in extreme ultraviolet light by the orbiting Solar Dynamics Observatory between April 16, 2012 and April 15, 2013. ... Three years of Solar Dynamics Observatory images are compressed into this short video . ... April 2013 . ... Sun with Solar Flare . ...

Semiconductor Home > Products > Mixed Signal and Analog > CCD IMAGERS Family > . TC213, 1024- X 512-PIXEL CCD IMAGE SENSOR . ... The TC213 is a frame-transfer charge-coupled device (CCD) image sensor that provides very high-resolution image acquisition for image-processing applications such as robotic vision, medical X-ray analysis, and metrology. The image format measures 12.00 mm horizontally by 6.12 mm vertically; the image-area diagonal is 13.5 mm. ... 13.5-mm Image-Area Diagonal . ...

One of the first light images taken on April 22, 1998 in 195 Angstroms . Loops viewed on April 25, 1998, seen in 171 Angstroms. ... Active Region seen on April 26, 1998 in 171 Angstroms . ... Flare observed in 1216 Angstroms on May 19, 1998 . ... Post flare loop observations on August 16, 1998 observed in 171 Angstroms . Post flare loop observations on August 16, 1998 observed in 195 Angstroms . ... Active regions observed on August 19, 1998 in 171 Angstroms . ...

Automatic Classification of Sunspot Groups Using SOHO/MDI Magnetogram and White Light Images David Stenning March 29, 2011 1 Introduction and Motivation Although solar data is being generated at an unprecedented rate, the majority of sunspot classification is done manually by experts. ... This is to smooth the "white" areas in the magnetograms. ... Left: Inverse Magnetogram Right: "Opened" Inverse Magnetogram 6 Using the cleaned images, sunspot active-region "seeds" are obtain by thresholding. ...

... International relations . ... Samara State Aerospace University Staff Azyazov Valeriy Nikolaevich . ... Pershin A.A. , Torbin A.P. , Heaven M.C., Azyazov V.N. Incomplete ozone recovery effect in the presence of active oxygen species // Bulletin of the Lebedev Physics Institute . ... Mezhenin A. V. , Azyazov V.N. Features of power extraction in EOIL // 20th International Symposium on High Power Systems and Applications, 25 August 2014 through 29 August 2014, Chengdu, China, , 2015, P. 92551Z . ...

... InformChaos Lab took part in CeBIT-2015 (Hannover, Germany) with "Active Ultra Wideband Wireless Networks". ... Lev Kuzmin received Dr.Sci. degree for his thesis "Wireless information transmission over UWB chaotic carrier" from IRE RAS. ... Artem Nikishov received Ph.D. degree from the Moscow Institute of Physics and Technology for the thesis "Generation of microwave chaotic oscillations in self-oscillating systems with several active elements". ... Our Products page is renewed. ... News | ...

Date: Thu, 12 Apr 2007 18:15:45 +0200 (MEST) From: Alessandro Marconi <marconi@arcetri.astro.it> To: boch@sai.msu.ru Subject: Summer school on AGNs and VLTI Dear Colleague, here is the first announcement and call for applications for a VLTI summer school on "Active Galactic Nuclei at the highest angular resolution: theory and   observations". ... It is supported by 15 EU member states, including new member states, and thus integrates the entire European optical interferometry community. ...

... 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 . ...

The Astronomical Society of Australia has been asked by STANDARDS AUSTRALIA to compile a list of "designated" optical observatories that are valuable resources for (i) research, (ii) education and (iii) community use. The ASA is the final arbiter of whether any particular observatory is so designated. ... Upon receipt of your application form, your observatory will be entered on a list of "Pending Designated Observatories" on the ASA Home Page. ... It will be emailed for you. ... Email . ...

... Armagh Observatory, College Hill, Armagh BT61 9DG, +44 (0)28 3752 2928 . ... A sketch for the active region model on ultracool dwarfs. ... An active region model was built, based on the rotation of the UCD and the ECMI mechanism. ... The active region model is applied to the radio emission from TVLM 513-46546, in which the ECMI mechanism is responsible for the radio bursts from the magnetic tubes and the rotation of the dwarf can modulate the integral of flux with respect to time. ...

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. ...

... 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 . ...

... Science . ... Science Users Information > Science Publications > Science Announcements . ... Observing Facilities . ... Observing with ESO Telescopes . ... Instrument Pipelines . ... Data Handling and Products . ... Science Data Products Forum . ... ESO Data . ... Science Announcements . ... Published: 05 Oct 2015 . ... New data products resulting from the VST Public Survey ATLAS are now available via the dedicated Phase3 query interface at the Science Archive Facility . ... Published: 31 Aug 2015 ....

... 1994: . As a result of comparing the spectra of active solar regions from the observations with high spatial resolution in the microwave range at the RATAN-600 (the S-component) with a flare component observed at meter wavelengths on the VLA (USA) we revealed the presence of a strong and prolonged noise storm exactly where a weak decaying active region (with the presence of powerful active regions in the disk) is located. ... Archive . ...

... Dept. for Physics of Stars&Galaxies . Dept. for Space Plasma Physics . Dept. for Physics of Minor Celestial Bodies . Dept. for Physics of Planetary Systems . Dept. for Solar Physics . Department for Atmospheric Optics . ... Kinematics&Physics.. ... 2016,MNRAS, Vol.455 ,is.1,p.357-369. ... 2016,MNRAS, Vol.456 ,is.1,p.181-191. ... 2016,ApJ, Vol.816 ,is.1,p.3. ... Applied Optics . ... Solar Physics . ... All Pages . ... N1-12 . ... microfish . ... Applied Spectroscopy (microfishes) . ...

... Team . ... V.V.Sokolov "The gamma-ray bursts, core-collapse supernovae and global star forming rate at large redshifts" . ... I.V.Sokolov, A.S.Moskvitin, Eda Sonbas, O.V.Verkhodanov, O.P.Zhelenkova "A galaxy cluster in the GRB 021004 field" . ... The monitoring of GRB afterglows and the study of their host galaxies with the SAO RAS 6-m telescope from 1997". ... A.S.Moskvitin, T.A.Fatkhullin, V.V.Sokolov and V.N.Komarova, "Spectral and photometric monitoring of CCSNe at SAO RAS" . ...

... 13th European VLBI Network Symposium . and Users Meeting . on September 20-23, 2016. ... 13th European VLBI Network Symposium and Users Meeting on September 20-23, 2016. ... Year book "Ephemerides of Minor Planets for 2016" on-line . ...