... Geomagnetic activity can be divided into two main categories, storms and substorms . Storms, the main contributors to space weather , are initiated when enhanced energy transfer from the solar wind/IMF into the magnetosphere leads into intensification of ring current . The ring current development can be monitored with the Dst index . ... Iyemori, T., and D. R. K. Rao, Decay of the Dst field of geomagnetic disturbances after substorm onset and its implication to storm-substorm relation, Ann. ...

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• Current Solar Wind Conditions
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The IAO-type events have to stimulte the science-educating style of the Olympiads. To follow the main science-educating principles of the IAO-type events and Schools for Young Astrophysicists , particularly: . ... The minimum duration of the IAO-type event is defined as 5 days (4 nights). ... foreign language teams for an international IAO-type event - 1 / 2. ... The full text of the current Supplementary Instructions N 4 IAO-type events and Schools for Young Astrophysicists to be presented later. ...

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• VII International Astronomy Olympiad: information available before

... Team . ... The main goal of observations of GRB host galaxies is accumulation of statistics of their spectroscopic and photometric properties. ... The Hubble diagram for 22 GRB host galaxies with known magnitudes and redshifts (GRB 970228, GRB 970508, GRB 970828, GRB 971214, GRB 980613, GRB 980703, GRB 990123, GRB 990510, GRB 990712, GRB 9912008, GRB 991216, GRB 000131, GRB 000210, GRB 000301C, GRB 000418, GRB 000911, GRB 000926, GRB 001109, GRB 010222, GRB 010921, GRB 011121 and GRB011211). ... 600...

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• GRB follow-up team GRB workshop 2009

Main Sections LabIR main page . ... LabIR staff . ... Tirgo Page . ... The TIRGO NIR photometer uses a single InSb detector with cooled low-noise amplification electronics. ... Results of the TIRGO calibration program: 1986-1987" L.K. Hunt, G.Calamai, and E. Oliva Arcetri Technical Report No. ... Near-infrared photometry at the Gornergrat Infrared Telescope" L.K. Hunt Arcetri Technical Report No. ... Manuale del nuovo sistema di controllo del Fotometro del TIRGO" C.Baffa Arcetri Technical Report No. ...

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• Arcetri Radioastronomy group
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... Information about a variety of different calendars for different cultures (e.g., Christian, Jewish, Muslim, Chinese, Hindu etc.) ... In addition, the Chinese had two different ways of interpreting and observing celestial events. One way the Chinese used astronomy was known as lifa; it was a discipline that aimed to understand the regularities and the predictable events in the celestial system through careful, observations, measurements and records. ... back to Teachers' Newsletter Main Page ...

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• ASP: The New and Improved Hubble Space Telescope
• ASP: Individual & Community Support
• ASP: Family ASTRO: Night Sky Adventure

... The orbits as follows are considered: INTERBALL Tail Probe (IB_TAIL) & Auroral Probe (IB_AUR), GEOTAIL (NASA/ISAS), and POLAR (NASA). ... The situation investigation aim is to select the following favourable spatial positions (FSP) : . ... FSP3 : That part of the FSP1 & FSP2 time intervals, which corresponds to the magnetic conjugations of the any couple of the considered spacecraft. ... The polar diagram plot . ... The geocentric distance (GCD) of the 4 spacecraft as a function of the time. ...

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• Corrected Geomagnetic Coordinates
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... LINKS . ... 0 total, enter for more, latest pics follow . AAL Activities . ... 105 total, enter for more, latest pics follow . ... Internet Time: @850 . ... INTELLIGENT-IP Internet Services . SOME LINKS . ... more links.. ... The AAL is not responsible for the content of external internet sites! ... Coordination & Astronomical Content by: J. Steinberg ...

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... The Sun has come all of one day away from breaking its record for the longest period of inactivity for the last decade - reaching a mid-summer low and falling into yet another state of "hibernation". Yesterday, on the first day of autumn, new sunspots appeared on the surface of the Sun following an absence of almost 50 days. ... The first low lasted 51 days, from 21 July until 11 September last year. ... Now, almost a year later, it seems the Sun has hit a new low almost as "deep" as the first. ...

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• Space weather forecast September 24, 2015
• Space weather forecast March 14, 2015
• Space weather forecast March 16, 2015

THE RELATIVE MONTHLY MEAN SUNSPOT NUMBER ON DECEMBER 2013 HAS MADE Wdec.= 61.4, THAT GIVES FOR 42 MONTH (2012, JUNE) DEVELOPMENT CURRENT 24 CYCLES OF SOLAR ACTIVITY THE SMOOTHED MONTHLY MEAN SUNSPOT NUMBER W*june= 61.7 THE BEGINNING 24 CYCLES OF SOLAR ACTIVITY - I 2009 with W*=1.8 THE MOST PROBABLE TIME OF THE MAXIMUM OF THE CURRENT CYCLE- XI.2012 - III 2013 THE MOST PROBABLE HEIGHT OF THE MAXIMUM - Wmax = 66 - 75. ... NEXT WEEK THE LEVEL OF SUNSPOT ACTIVITY IS EXPECTED TO BE THE HIGH AND AVERAGE. ...

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• http://www.izmiran.rssi.ru/services/saf/archive/en/2014/obzor20141006.en.txt
• http://www.izmiran.rssi.ru/services/saf/archive/en/2013/obzor20130203.en.txt
• http://www.izmiran.rssi.ru/services/saf/archive/en/2012/obzor20121105.en.txt

... Most of the spirals discussed in the following are well-known starburst galaxies (M 82, NGC 253, etc.) In addition to their nuclear activity, which makes them so popular, the selected galaxies have several other phenomena in common, such as bars, gas outflow, and possibly nuclear rings. ... I compare the group of nearby starburst galaxies with distant ultra-luminous galaxies (Arp 220, NGC 6240, etc.), in which strong tidal interactions cause the radial gas inflow. ...

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• The Relation between the Large-scale Gas Dynamics, Nuclear Kinematics, and
• Data Selection CentralProcessor 0.11 documentation
• Follow up observations

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 . ...

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• grade 3
• Eyes on the Sky, Feet on the Ground: How to Use this Book
• Eyes on the Sky, Feet on the Ground