Download or read book Some Sunspot and Flare Statistics written by Barbara Bell and published by . This book was released on 2012-06-01 with total page 18 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Some Sunspot and Flare Statistics written by Smithsonian Astrophysical Observatory and published by . This book was released on 1903 with total page 35 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Solar Flare Occurrence as a Function of Sunspot Size written by Isadore Enger and published by . This book was released on 1966 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt: An objective technique has been developed for assessing the probability of occurrence of solar flares in a particular sunspot group, given only the sizes of the sunspot group on two consecutive days. The sunspot data cover the 10-year period 1955 to 1964 and have been published in the Greenwich Photoheliographic Results. The flare data were measured at Sacramento Peak, New Mexico. The flare and spot data were combined by a simple, objective technique which depends only on the size of the spot group and the relative positions of the spot group and flare. These results show the very marked dependence of flare occurrence on the size of the spot group and a significant, but very much smaller, dependence on the change in group size from one day to the next. (Author).
Download or read book Some Sunspot and Flare Statistics written by and published by . This book was released on 1959 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A Statistical Summary of Solar Flare Reports and Observatory Practices for the Period 1955 1964 written by Delos C. Jensen and published by . This book was released on 1967 with total page 458 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is a summary of the ten years (1955-1964) of observations of solar flares reported by 61 observatories. The flare reports have been published predominantly in the IAU Bulletin and CRPL-F Series Part B. This report summarizes the types of information contained in the flare reports, and the frequency of some parts of these reports as functions of many parameters. The results reflect the need for closer cooperation and coordination of participating observatories in recording and reporting solar flare data.
Download or read book Flare Occurrence Tomorrow as a Function of Area and Flariness of Sunspot Today written by Alfred E. Reilly and published by . This book was released on 1969 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt: An objective technique has been developed for estimating the probability of occurrence of solar flares in a particular sunspot group using both the size of the sunspot group and its 'flariness'. Tables are given which indicate the probability that at least one flare of importance two or greater will occur tomorrow, given the area and flariness of the sunspot group today. (Author).
Download or read book Some Sunspots and Flare Statistics written by Barbara Bell and published by . This book was released on 1959 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Some Synoptic Flare Data 1937 1960 written by Henry J. Smith and published by . This book was released on 1962 with total page 56 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Some Sunspot and Flare Statistics Smithsonian Contributions to Astrophysics Vol 3 No 4 written by Barbara Bell and published by . This book was released on 1959 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Solar Flare Occurrence as a Function of Sunspot Size written by and published by . This book was released on 1966 with total page 25 pages. Available in PDF, EPUB and Kindle. Book excerpt: An objective technique has been developed for assessing the probability of occurrence of solar flares in a particular sunspot group, given only the sizes of the sunspot group on two consecutive days. The sunspot data cover the 10-year period 1955 to 1964 and have been published in the Greenwich Photoheliographic Results. The flare data were measured at Sacramento Peak, New Mexico. The flare and spot data were combined by a simple, objective technique which depends only on the size of the spot group and the relative positions of the spot group and flare. These results show the very marked dependence of flare occurrence on the size of the spot group and a significant, but very much smaller, dependence on the change in group size from one day to the next. (Author).
Download or read book Observing the Sun written by Peter O. Taylor and published by Cambridge University Press. This book was released on 1991-11-21 with total page 180 pages. Available in PDF, EPUB and Kindle. Book excerpt: Observing the Sun is one of the most interesting and rewarding facets of astronomy to which amateurs can contribute. Few areas of science offer as many opportunities to contribute meaningful data. It is the one branch of astronomy that requires only modest equipment and can be pursued during the day. Peter Taylor is a keen and highly experienced observer of the Sun. In this book he explains in a clear and practical way everything that a telescope user needs to know in order to make solar observations. The author draws on his many years of personal experience as a contributor to the Solar Division of the American Association of Variable Star Observers and to the American Sunspot Program. The book deals with the following topics: historical background, choice of equipment for the safe conduct of solar observations, observations of sunspots, and reporting observations. New techniques, such as electronic recording and the operations of radio telescopes, are included. The level of presentation is understandable to anyone with basic astronomical knowledge and some experience in handling a small telescope.
Download or read book Statistical Aspects of Solar Flares written by Robert M. Wilson and published by . This book was released on 1987 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Sun as a Guide to Stellar Physics written by Oddbjørn Engvold and published by Elsevier. This book was released on 2018-11-15 with total page 522 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Sun as a Guide to Stellar Physics illustrates the significance of the Sun in understanding stars through an examination of the discoveries and insights gained from solar physics research. Ranging from theories to modeling and from numerical simulations to instrumentation and data processing, the book provides an overview of what we currently understand and how the Sun can be a model for gaining further knowledge about stellar physics. Providing both updates on recent developments in solar physics and applications to stellar physics, this book strengthens the solar–stellar connection and summarizes what we know about the Sun for the stellar, space, and geophysics communities. Applies observations, theoretical understanding, modeling capabilities and physical processes first revealed by the sun to the study of stellar physics Illustrates how studies of Proxima Solaris have led to progress in space science, stellar physics and related fields Uses characteristics of solar phenomena as a guide for understanding the physics of stars
Download or read book The Influence of Radio Brightness Temperature on Solar Flare Prediction written by Alfred E. Reilly and published by . This book was released on 1967 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt: An objective technique based on two measured parameters has been developed to determine the probability of occurrence of a solar flare near a sunspot group. The parameters utilized were the size of each sunspot group and the magnitude of an associated radio brightness temperature. Flare, sunspot, and radio data measured daily during the period from April 1962 through October 1966 were used in the study. These data were associated objectively and analyzed statistically. The size of a sunspot group is a significant predictor in itself. This analysis shows that consideration of radio brightness temperature significantly improves the accuracy of solar flare prediction beyond the accuracy that can be achieved by considering only the size of the sunspot group. (Author).
Download or read book Statistics of Solar Cosmic Rays as Inferred from Correlation with Intense Geomagnetic Storms written by David Adamson and published by . This book was released on 1962 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book STATISTICS OF SOLAR FLARES written by Osamu Takahashi and published by . This book was released on 1942 with total page 19 pages. Available in PDF, EPUB and Kindle. Book excerpt: Information is provided on various characteristics of solar flares, by means of statistical methods, to help in a better theoretical understanding of them. The solar flare's lifetime, area, H-alpha width, development curve, associated filament activation and associated sunspot group characteristics are all analyzed for each of 685 flares observed. Correlation of these parameters with one another and with flare importance and Solar Activity is shown, as well as the frequency distribution. (Author).
Download or read book Ionospheric Effects of Solar Flares written by Hermine Vloemans and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 308 pages. Available in PDF, EPUB and Kindle. Book excerpt: Sudden Ionospheric Disturbances resulting from an interaction of the Solar Flare radiation with the constituents of the upper atmosphere constitute one of the three major aspects of ground level monitoring of solar flares -the other two being optical observations of flares, and the observations of solar bursts in radio wavelengths. SIDs, therefore, form a major part of flare monitoring programme in many observatories. Unlike the other two, however, the ionospheric effects of flares provide one major additional source of interest - the reaction of the ionospheric plasma to an impulsive ionization. The high atmosphere provides a low pressure laboratory without walls in which a host of reactions occur between electrons, ions and neutral particles. The resulting products and their distributions may bear no resemblance to those of the primary neutral constituents or their direct ionization products. The variations with the time of the day, with season and with solar activity that form the bulk of the ionospheric measurements are too slow to allow any insight into the nature of these ionospheric reactions whose lifetimes are often very short. The relaxation time of the ionospheric ionization is only a few minutes or fraction of a minute in the lower ionosphere and in the E-region and is about 30 min to an hour at 300 km. The flares provide a sudden short impulse comparable to these time scales.
