... Sun images . Magnetic storms online . Sun flares . ... Active areas . September : 2014 . ... X-ray emission of the Sun from 08.09.2014 to 09.09.2014 (GOES-15) . Today, 1 solar flare was observed: . Active region . ... Flare of class C3.2 . 2157 . ... Yesterday, 5 solar flares were observed: . ... Last updated: September 10, 2014 00:00 UT . ... 1953-2016 Laboratory of X-ray astronomy of the Sun, LPI RAS, Russia . ...

... 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 | ...

... Credit: Solar Optical Telescope, Hinode Satellite , JAXA Explanation: Plumes of hot gas shoot across the surface on even an average day on the Sun. ... Near the horizon, active regions around a sunspot eject hot plasma along the magnetic field lines that connect the sunspot to surrounding regions in the solar atmosphere . ... The above movie in representative color covers a solar region of 8,000 kilometers. ... Publications with keywords: Sun - flare . ... An X Class Flare Region on the Sun . ...

... SAO RAN RATAN-600 EXCURSIONS 40 YEARS of R/T . ... GPS radio sources . ... T.V. Mufakharov, M.G. Mingaliev, Yu.V. Sotnikova, Ya. ... M.G. Mingaliev, Yu.V. Sotnikova, R.Yu. ... Erkenov A.K., Mingaliev M.G., Sotnikova Yu.V., "Bright sources monitoring at the RATAN-600 during the Planck Mission", in XI Russian-Finnish Symposium on Radio Astronomy "Multi-Wavelength Investigations of Solar and Stellar Activity and Active Galactic Nuclei", Abstracts, Pushchino, Russia, October 18-22, p. 6, 2010. ...

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. ...

... Science . ... Science Users Information > Science Publications > Science Announcements . 10 Apr 2016 jump to navigation jump to content . ... Observing with ESO Telescopes . ... Phase 1 Proposals . ... Phase 3 . ... Data Handling and Products . ... Science Data Products Forum . ... ESO Data . ... Science Announcements . ... Published: 18 Jan 2016 . ... The submission deadline for Phase 2 Service Mode observations is 4 February 2016 ; see separate announcement . ... Published: 17 Dec 2015 . ...

... ATNF Home . ... About ATNF overview . ... Australia Telescope Steering Committee . ... Australia Telescope User Committee . ... Murchison Radio-astronomy Observatory . ... Parkes radio telescope . Australia Telescope Compact Array . ... Parkes | ... Visiting Parkes radio telescope . ... Parkes radio telescope webcam . ... The Active Algol Binary KZ Pavonis . ... The Algol type eclipsing binary KZ Pav has been observed over one complete orbit (0.95 days) with the Australia Telescope Compact Array. ...

THE RELATIVE MONTHLY MEAN SUNSPOT NUMBER ON SEPTEMBER 2014 HAS MADE Wsep.= 87.6, THAT GIVES FOR 61 MONTHS (2014, march) DEVELOPMENT CURRENT 24 CYC- LES OF SOLAR ACTIVITY THE SMOOTHED MONTHLY MEAN SUNSPOT NUMBER W*mar. ... Weekly Bulletin on Solar and Geomagnetic Activity Highlights on 29.09 - 28.09.2014, Forecast on 29.09 - 05.10.2014, Carrington Rotation 2155 (17,72.09.2014) SUNSPOT-FORMING ACTIVITY OF THE SUN WAS AT THE HIGH AND AVERAGE LEVELS. ... THERE IS 3 EJECTIONS OF THE SOLAR FILAMENTЫ. ...

... 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 . ...

... Data is taken from Hilton (2011): Active M3-M5, 332 hours on 4 stars observing 157 flares; Active M6-M8, 59 hours on 4 stars observing 39 flares; Less Active M3тАУM5, 147 hrs on 8 stars observing 28 flares; Inactive M0-M2, 256 hours on 16 stars observing 9 flares; Inactive M3-M5, 153 hours on 6 stars observing 3 flares; Active M0-M1, data from Moffett (1974), Doyle Mathiouidakis (1990) and Dal Evren (2011), 156 hours on 2 stars observing 63 flares. ...

Product: Report of Solar-Geophysical Activity :Issued: 2016 Apr 08 2200 UTC # Prepared jointly by the U.S. Dept. of Commerce, NOAA, # Space Weather Prediction Center and the U.S. Air Force. ... Analysis of Solar Active Regions and Activity from 07/2100Z to 08/2100Z: Solar activity has been at low levels for the past 24 hours. ... Geophysical Activity Summary 07/2100Z to 08/2100Z: The geomagnetic field has been at quiet to minor storm levels for the past 24 hours. ...

... Tonight's Sky . ... The Magazine . ... Observing . ... Magazine . ... Gravitational wave search provides insights into galaxy evolution and mergers . ... The double star 54 Leonis, spiral galaxy NGC 3198, and emission nebula NGC 3199 . ... Open cluster NGC 2818, spiral galaxy NGC 2964, and spiral galaxy NGC 2976 . ... Astronomy for Kids . ... active galactic nuclei . ... Receive news, sky-event information, observing tips, and more from Astronomy's weekly email newsletter. ... Astronomy Magazine . ...

Close binary systems of the RS CVn and Algol type are characterized by a highly variable radio emission, from typical flux densities of a few mJy during low-activity (quiescent) periods, up to 1 Jy during strong flares. The origin of this radio emission is attributed to the gyrosynchrotron mechanism. Several observations of these stars have shown an evolution of the radio spectrum during both the rising and decay phases of flares. ...

... Коллекция: Весна-лето 2016 . ... Кроссовки Zenden Active. ... title=' fashion наручные женские часы Festina 16592.3. Коллекция Dream - Festina' border='0' align='left' width='120' style='margin-right: 20px;' hspace='7' vspace='5'/> Часы, минуты, секунды. ... Кроссовки Nike - Nike - Nike . ЖЕНСКИЕ НОСКИ ДЛЯ БЕГА 2 ПАРЫ ASICS 2PPK SOCK . ... Японские наручные мужские часы Orient QC0P001B. Коллекция Classic Design - Orient - Orient . ... fashion наручные мужские часы Mistura TP13019CJPUPHWD. ...

... 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. ...

spaceweb@oulu.fi - last update: 4 September 1998, 1010 UT (RR) . The expansion phase starts the active part of the substorm process. ... Start of the phase is called the onset of the substorm. ... Recently McPherron and Hsu (ICS-4 meeting, 1998) advocated a concept of "main substorm onset" to deal with observations of multiple onsets. ... Aggson, T. L., J. P. Heppner, and N. C. Maynard, Observations of large magnetospheric electric fields during the onset phase of a substorm, J. Geophys. Res. ...

... Mindful of these biases, I can now explore the relations between the measured rotation periods and various other observables. The hypothesis behind monitoring stellar variability is that active stars have asymmetric spot distributions on their photospheres. ... They found that only stars with rotation periods greater than seven days show variations greater than 0.4 magnitudes at I. Bouvier et al . ... 1993a) demonstrated a relation between X--ray flux and spectral type in ZAMS stars. ...

... 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 . ...

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. ...

. Flare 23/09/98 Flare 19/07/99 Post flare loops 25/07/99 06/08/99 Fine prominence structures 14/09/99 . Eruptive Prominence, 15 May 2000 Limb flare, 20 May 2001 Limb flare, 04 Aug 2002 Flare, 16 Aug 2002 . Flare, 18 Aug 2002 Active prominence, 12 June 2003 Quiet prominence, 25 September 2005 Active prominence, 17 September 2006 .