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Category Archives: SOHO
Latest SDO IMage
This image taken by SDO’s AIA instrument at 171 Angstrom shows the current conditions of the quiet corona and upper transition region of the Sun. Active Region 1515 released an M6.9 class flare beginning at 12:23 PM EDT and peaking … Continue reading
Posted in SDO, SOHO, Space Weather, Sun
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SOHO Latest and Space Weather
EIT 304 A large solar flare yesterday triggered a coronal mass ejection travelling at 1400 km/s that will reach Earth today. An energetic eruption of this level can disrupt satellites, so operation teams at ESA and other organisations are closely … Continue reading
Posted in SOHO, Space Weather
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Comet LoveJoy
Comet Lovejoy seen by SOHO “On average, new Kreutzgroup comets are discovered every few days by SOHO, but from the ground they are much rarer to see or discover,” says Karl Battams, Naval Research Laboratory, who curates the Sungrazing comets … Continue reading
Posted in Helioseismology, SOHO, Sun
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Space Weather: Wind in Space
An X1.9 Flare at 2011 Nov 03 2027 UT! Full SDO cadence (12 sec) movie of the M2.5 flare and associated CME from June 7,2011; composite of AIA wavelengths 211 (red channel), 193 (green), and 171 (blue); 05:00–13:00UTC; 2400 … Continue reading
Posted in Helioseismology, SOHO, Space Weather
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Solar Weather
Sunspot 1283 Bristling With Flares: An X1.8 and An M6.7 – UPDATED 09.08.11 The Sun as viewed by the Solar Dynamics Observatory (SDO) in 193 angstrom. The verticle black area near the center is the coronal hole. Credit: NASA/SDO … Continue reading
Posted in Aurora, Helioseismology, SDO, SOHO, Sun
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Solar Dynamics Observatory Pick of the Week
(Click on Image for Larger Veiwing) Then and Now A sidebyside comparison of the Sun from precisely two years ago (left, from SOHO) to the present (right, from Solar Dynamics Observatory) dramatically illustrates just how active the Sun has become … Continue reading
Posted in Helioseismology, SOHO
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SOHO EIT 304 Latest Image
The Sun Now– EIT (Extreme ultraviolet Imaging Telescope) images the solar atmosphere at several wavelengths, and therefore, shows solar material at different temperatures. In the images taken at 304 Angstrom the bright material is at 60,000 to 80,000 degrees Kelvin. … Continue reading
Posted in SOHO, Space Weather, Sun
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Solar Dynamics Observatory
SpaceCraft The total mass of SDO at launch was 3000 kg (6620 lb); instruments 300 kg (660 lb), spacecraft 1300 kg (2870 lb), and fuel 1400 kg (3090 lb). Its overall length along the sunpointing axis is 4.5 m, and … Continue reading
Posted in Helioseismology, SDO, SOHO, sonofusion, Sound
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Poincaré Hyperbolic Disk
See also:Poincaré Hyperbolic Disk *** Hyperbolic Geometry Geometric models of hyperbolic geometry include the KleinBeltrami model, which consists of an open disk in the Euclidean plane whose open chords correspond to hyperbolic lines. A twodimensional model is the Poincaré hyperbolic … Continue reading
Posted in Helioseismology, Klein, Oscillations, SOHO, Sound, Space Weather
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Thoughts on Angel and Demons Plot
“For me, the most attractive way … would be to capture the antihydrogen in a neutral particle trap … The objective would be to then study the properties of a small number of [antihydrogen] atoms confined in the neutral trap … Continue reading
Posted in Dirac, Quark Gluon PLasma, SOHO
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