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New sunspot cycle could be one of the strongest on record（图）
New sunspot cycle could strongest record
2020/12/18
A team of scientists led by the National Center for Atmospheric Research is predicting that the sunspot cycle that started this fall could be one of the strongest since record-keeping began.In a new a...
Inouye Solar Telescope releases its first image of a sunspot（图）
Inouye Solar Telescope first image sunspot
2020/12/11
The world's largest solar observatory, the U.S. National Science Foundation's Daniel K. Inouye Solar Telescope, has released its first image of a sunspot. Although the telescope is still in ...
National Solar Observatory predicts a large sunspot for Thanksgiving（图）
National Solar Observatory predicts large sunspot Thanksgiving
2020/12/11
Scientists at the U.S National Science Foundation National Solar Observatory have predicted the emergence of a new sunspot group just in time for Thanksgiving.Using a technique called h...
Relationship between geomagnetic classes’ activity phases and their occurrence during the sunspot cycle
Classes of geomagnetic activity Phases of geomagnetic classes Sunspot cycle
2015/8/28
Four well known geomagnetic classes of activity such as quiet days activity, fluctuating activity, recurrent activity and shock activity time occurrences have been determined not only by using time pr...
Absence of Correlation between the Solar Neutrino Flux and the Sunspot Number
Solar Neutrino Flux Sunspot Number
2015/8/20
There exists a considerable amount of research claiming a puzzling anticorrelation between the
neutrino detection rate at the Homestake experiment and indicators of solar activity such as the sunspot...
Flare induced penumbra formation in the sunspot of NOAA 10838
Solar and Stellar Astrophysics (astro-ph.SR)
2010/12/24
We have observed formation of penumbrae on a pore in the active region NOAA10838 using Dunn Solar Telescope at NSO,Sunpot,USA. Simultaneous observations using different instruments (DLSP,UBF,Gband and...
Scattering of helioseismic waves by a sunspot: wavefront healing and folding
Solar and Stellar Astrophysics (astro-ph.SR)
2010/12/23
We observe and characterize the scattering of acoustic wave packets by a sunspot, in a regime where the wavelength is comparable to the size of the sunspot. Spatial maps of wave traveltimes and amplit...
Explanation of the sea-serpent magnetic structure of sunspot penumbrae
sunspots Sun magnetic fields
2010/3/9
Recent spectro-polarimetric observations of a sunspot showed the formation of bipolar magnetic patches in the mid penumbra and their propagation toward the outer penumbral boundary. The observations w...
On the Consideration of the Double Sunspot Cycle in Climatic Investigations
Consideration Double Sunspot Cycle Climatic Investigations
2009/6/19
On the Consideration of the Double Sunspot Cycle in Climatic Investigations.
Long-term Modulation of Cosmic Ray Intensity in relation to Sunspot Numbers and Tilt Angle
Cosmic ray intensity sunspot numbers tilt angle
2009/5/7
Adetailed correlative analysis between sunspot numbers (SSN) and tilt angle (TA) with cosmic ray intensity (CRI) in the neutron monitor energy range has been performed for the solar cycles 21, 22 and ...
Predicting Maximum Sunspot Number in Solar Cycle 24
Sunspot number precursor prediction technique geomagnetic activity index aa
2010/9/15
A few prediction methods have been developed based on the precursor technique which is found to be successful for forecasting the solar activity. Considering the geomagnetic activity aa indices during...
Long-term Modulation of Cosmic Ray Intensity in relation to Sunspot Numbers and Tilt Angle
Cosmic ray intensity sunspot numbers tilt angle
2010/9/16
Adetailed correlative analysis between sunspot numbers (SSN)and tilt angle (TA) with cosmic ray intensity (CRI) in the neutron monitor energy range has been performed for the solar cycles 21, 22 and 2...