Forecast of solar activity in 24th cycle
نویسندگان
چکیده
منابع مشابه
Solar activity forecast with a dynamo model
Although systematic measurements of the Sun’s polar magnetic field exist only from mid-1970s, other proxies can be used to infer the polar field at earlier times. The observational data indicate a strong correlation between the polar field at a sunspot minimum and the strength of the next cycle, although the strength of the cycle is not correlated well with the polar field produced at its end. ...
متن کاملcomparison of catalytic activity of heteropoly compounds in the synthesis of bis(indolyl)alkanes.
heteropoly acids (hpa) and their salts have advantages as catalysts which make them both economically and environmentally attractive, strong br?nsted acidity, exhibiting fast reversible multi-electron redox transformations under rather mild conditions, very high solubility in polar solvents, fairly high thermal stability in the solid states, and efficient oxidizing ability, so that they are imp...
15 صفحه اولSources of solar wind over the solar activity cycle
Fast solar wind has been recognized, about 40 years ago, to originate in polar coronal holes (CHs), that, since then, have been identified with sources of recurrent high speed wind streams. As of today, however, there is no general consensus about whether there are, within CHs, preferential locations where the solar wind is accelerated. Knowledge of slow wind sources is far from complete as wel...
متن کاملDeciphering Solar Magnetic Activity: Spotting Solar Cycle 25
We present observational signatures of solar cycle 25 onset. Those signatures are visibly following a migratory path from high to low latitudes. They had starting points that are asymmetrically offset in each hemisphere at times that are 21–22 years after the corresponding, same polarity, activity bands of solar cycle 23 started their migration. Those bands define the so-called “extended solar ...
متن کاملDoes the southern dominance of solar activity really exist in solar cycle 21?
In this paper, 20 solar-activity phenomena are collected to investigate solar activity in solar cycle 21. The results obtained show that we can hardly say that either the south dominance of solar activity or the north dominance exists for solar cycle 21. It is also inferred in this paper that solar activity in solar cycle 21 has a northern bias at first, then as the cycle progresses, southern p...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Astronomical School’s Report
سال: 2012
ISSN: 2411-6602,1607-2855
DOI: 10.18372/2411-6602.08.1034