Two sunspots are visible on our star's face for the first time in more than a year, possibly ending an unexpected lull in solar activity. 在地球上观测到有两个太阳黑子,这还是一年多来的首次,也许这将意味着太阳活动平静时期的结束。 article.yeeyan.org 10. If correct, the years ahead could pro...
A solar activity cycle of about 2400 years has until now been of uncertain origin. Recent results indicate it is caused by solar inertial motion. First we describe the 178.7-year basic cycle of solar motion. The longer cycle, over an 8000 year interval, is found to average 2402.2 years. ...
Solar activity, as measured by the number of sunspots, follows an 11-year cycle between maxima. The cycle has an active 7-year period during which solar flare events are probable and a quiescent 4-year period during which solar flare events are rare. The last peak in activity occurred in20...
While the eleven-year solar cycle was recognized in the XIX century, the lack of direct data c... Vaquero,M J. - 《Geophysical Research Letters》 被引量: 64发表: 2002年 Solar activity cycle during classical antiquity Early accounts of phenomena that may be identified as auroral displays ...
On cyclic activity of the Sun and solar-type stars The cyclicity of 33 solar-type stars that are similar to 11-year and to the quasi-biennial variations of solar radiation have studied. Our calculation were... EA Bruevich,GS Ivanovkhlodnyj - 《Physics》 被引量: 4发表: 2011年 Cycles of...
BEIJING, May 8 (Xinhua) -- China's National Center for Space Weather has predicted that there will be moderate to high levels of solar activity this week, with the possibility of more powerful solar flares. Among the most intense phenomena from the sun, solar flares are characterized by sudd...
The dark patches on the sun are the impressive sunspots visible on the surface due to high solar activity. October 3, 2024 at 2:05 AM Eclipse glasses are the ultimate accessory (Image credit: Josh Dury) Josh Dury has just sent us this epic photo of annular solar eclipse from Easter ...
The preserved sedimentary record during the intense solar activity period of 360–500 yr cycle Ⅰ is further complicated by short-term solar activity, as identified as the 81–110 yr (CSR Ⅱ) and 30–57 yr (CSR Ⅲ) cycles (Fig. 8A–D). However, these small-scale solar activity cycles ...
Although observations of solar activity (sunspots) cover only the last about 400 years, radionuclides produced by cosmic rays and stored in tree rings or ice cores serve as proxies for solar activity extending back thousands of years. However, the presence of weather-induced noise or low ...
Flying Kite, by painter Wen Yongchen. [Photo/Artron.net] Spring is the best season for kite-flying. A traditional folk activity, it has a history of more than 2,000 years. It can help build one's health and prevent diseases. It also has the effect of promoting blood circulation and ...