Statistics of sunspot activity . The sunspot indices . ... NGDC's observations . The solar regions . ... Average annual indices . ... February . ... February, 1985 . Visual indices of solar activity by National Geophysical Data Center . ... Average . ...

During routine astrometry with the 1.0-m to improve the orbit of the Apollo asteroid 2004 CB, the 'asteroid' was found on March 30 to have a short tail! ... it was renamed periodic comet P/2004 CB (LINEAR). ... Back to Previous News . Siding Spring Survey Main Page . ... Follow-up Astrometry with the 1.0-m at SSO . Previous News Items . Anglo-Australian Near Earth Asteroid Survey 1990-96 . ...

Extended time series of Solar Activity Indices (ESAI) is database including observational, synthetic and simulated sets to study Solar magnetic field variations and their influence on the Earth. ESAI extend the ordinary lengths of some traditional indices of solar activity: sunspot areas, Wolf numbers (equatorial component of magnetic field of the Sun), polar faculae numbers (polar component), mean latitudes, N-S asymmetry of hemispheres (location of activity). Series . ...

home education > activities . ... This activity is mostly just calculations, but students will enjoy figuring out the angle by which an asteroid headed for Earth needs to be deflected to miss our planet.[h] . ... Students are encouraged to play out the motion and positions of a comet and the Earth, relative to the Sun. ... Cute little activity in which younger students "interview" the Sun as a way of encouraging them to research various topics on the Stanford Solar Center web site. [e] . ...

... Precisely one month ago, on 11 July 2009, the last active area of the new solar cycle disappeared from the surface of the Sun. Over the 30 days following this, neither observers on Earth nor devices in space have been able to detect the emergence of any sunspots. ... Therefore, it seems that our star has once again returned to a state of deep solar "winter", following several sparks of activity in May-June 2009. ... To date, this period has lasted 30 days. ...

... 88.0, THAT GIVES FOR 28 MONTH (2011, APRIL) DEVELOPMENT CURRENT 24 CYCLES OF SOLAR ACTIVITY THE SMOOTHED MONTHLY MEAN SUNSPOT NUMBER W*apr.= ... 137.3 --------------------------------------------------------------------------- Weekly Bulletin on Solar and Geomagnetic Activity Highlights on 31 - 06.11.2011, Forecast on 07 - 14.11.2011, Carrington Rotation 2016 (19,99.10.2011) SOLAR SUNSPOT ACTIVITY OF THE LAST PERIOD CHANGED FROM AVERAGE TO HIGH (3.11) AND BACK TO THE AVERAGE. ...

... In collaborative work with David Garc?a Alvarez (an Observatory PhD student now at Harvard) and John Butler, an extensive study of the RS CVn binary HR1099 was completed leading to two papers; the first on Doppler imaging and the second on flare activity. Spectra for the Doppler imaging were taken at two different sites, Kitt Peak National Observatory (KPNO), Arizona, and Mount Stromlo Observatory (MSO), Australia, during the 1998 MUltiSIte COntinuous Spectroscopic (MUSICOS) campaign. ...

Geomagnetic storms and substorms are a natural hazard similar to hurricanes, floods etc. ... Solar and geomagnetic activity also probably influences the Earth's climate and human health. ... Under southward directed IMF the Earth's magnetosphere is open to input from the solar wind flow. ... Since practical importance of solar wind measurements was recognized, a number of approaches was developed for prediction of the geomagnetic activity basing on the solar wind data. ...

... Outreach . ... COSMOS is a four-week residential program for talented high school students. Astronomy cluster students learn through inquiry-based activities about galaxy evolution and formation, variable stars, and other topics using observations they take with the 40" telescope at Lick Observatory. I participated for two years as an instructor of the Maui Akamai Short Course, which is part of the education and outreach program of the Center for Adaptive Optics . ... Assistant Astronomer . ...

... Because of the solar wind originating from the Sun , Earth is hit by a hot, magnetized, supersonic collisionless plasma carrying a large amount of kinetic and electrical energy. Some of this energy finds its way into our magnetosphere creating, e.g., geomagnetic activity which consists of . geomagnetic storms , . ... Res. ... Mursula, K. and B. Zieger, The 13.5-day periodicity in the Sun, solar wind, and geomagnetic activity: The last three solar cycles, J. Geophys. ...

. Lesson Plans and Activities . Comets . Convection . Impact Craters . Eclipses . Inverse Square Law . Life in the Universe . Micrometeorites . Moon Phases . Robotic Spacecraft . Spotting the Shuttle . Sunspots . Luna and Io - A Comparison Study .

... The Sun is the closest star to us, and a regular object in our Galaxy. Solar activity manifests itself, primarily, in solar flares - episodic explosive energy release in the form of electromagnetic radiation and high energy particles (electrons and protons). The nature of the flares is related to cyclic variations of global and local magnetic fields in the atmosphere of the Sun. ... Such formations are called active regions. ...

... ATNF Home . About ATNF . ... About ATNF overview . ... Australia Telescope Steering Committee . ... Australia Telescope User Committee . ... Australian Square Kilometre Array Pathfinder . Murchison Radio-astronomy Observatory . ... Parkes radio telescope . Australia Telescope Compact Array . Mopra radio telescope . ... Australia Telescope Online Archive (ATOA) . ... Visiting Parkes radio telescope . Visiting Australia Telescope Compact Array . ... Parkes radio telescope webcam . ...

... Science Users Information > Science Activities . ... Science Staff . Science in Garching . ... Science in Santiago . ... In this section you will find a information about research activities at ESO and science related activities such as Science Verification programmes, about ESO's Scientific Staff and the various programmes for Fellows, Students and Visitors. Photo S. Deiries Information about ESO Research activities can be found via the Science in Garching and the Science In Santiago pages. ...

The following activities are included in the Universe at Your Fingertips guide. ... Clicking on each activity will take you to a "reviews" page where you can post a review, or read reviews posted by others who have used the activity. ... Activity Online . ... MOON AND PHASES . ... Observing Phases and Features . ... Modeling Moon Phases . ... SUN AND SEASONS . ... Observing the Sun Safely . ... Observing Where the Sun Sets . ... Making Pictures of Motion . ... Morning Star and Evening Star . ...

... Previous message: [sas-uploads] SAS manifest devtrack [xmmsas_20090217_1801_md5sums] uploaded . Next message: [sas-uploads] esas-0.3.tgz . ... In particular, the main SAS server, xmm.esac.esa.int, which centralizes the reception and delivery of SAS packages and hosts many other fundamental development tasks, will not be available since 9:00 hrs on Friday morning until 9:00 hrs on Monday 23rd. ... We hope to resume nominal activity on the Monday 23rd at 10:00 hrs. ...

... Activities | ... Collaborations | ... The main objective of laboratory #235 is development of imaging array detectors for different applications (including radio-astronomy, safety and security systems). We develop ultra-sensitive detectors (bolometers) and detector arrays, planar antennas and tuning circuits, refractive and reflective quasi-optical systems focusing millimeter and sub-millimeter wave irradiation on the detectors. ...

... joel created the event <b>ASRAS Board members meeting - monday May 9 @ Farash Center</b> . ... joel created the event <b>ASRAS MONTHLY MEMBERSHIP MEETING - Friday May 6 at Farash Center - Ionia NY</b> . ... joel created the event <b>ASRAS MONTHLY MEMBERSHIP MEETING - Friday April 1 at RIT</b> . ... joel created the event <b>ASRAS MONTHLY MEMBERSHIP MEETING - Friday Mar 4 at RIT</b> . ... 2 months ago . ... joel created the event <b>ASRAS General membership meeting - RIT - Friday FEB 5</b> . ...

по текстам по форуму внутри темы . Астронет | ... планета Астронет | ... Астрономия в России | Форумы | ... Новая тема ][ Новое сообщение ] . Форумы >> Астрономия и Интернет . ... Сообщение . ... Prognosis of solar activity . ... Прогноз Солнечной Активности . ... Новый индекс активности лишен субьективности, характерной для чисел Вольфа. t max SA max t min . ... Цитировать ][ Ответить ][ Новое сообщение ][ Новая тема ] . ...

... Dept. for Astrometry & Space Geodynamics . ... Dept. for Physics of Stars&Galaxies . Dept. for Space Plasma Physics . ... Dept. for Solar Physics . ... 2016,MNRAS, 2016MNRAS.tmp.. ... 2016,MNRAS, Vol.455 ,is.1,p.357-369. ... 2016,MNRAS, Vol.456 ,is.1,p.181-191. ... WASP- 22, WASP-41, WASP- 42 and WASP- 55. ... Mancini L., Ciceri S., Elyiv A.A.,Physical properties of the planetary systems WASP- 45 and WASP- 46 from simultaneous multiband photometry. 2016,MNRAS, Vol.456 ,Is.1,p.990-1002. ...