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Author : Richard Christopher Carrington
Publisher : Unknown
Page : 596 pages
File Size : 41,5 Mb
Release : 1863
Category : Sunspots
ISBN : BCUL:1092300609
Author : Benedetto Sestini
Publisher : Unknown
Page : 110 pages
File Size : 50,7 Mb
Release : 1853
Category : Electronic
ISBN : IBNR:CR102005519
Author : Peter O. Taylor
Publisher : Cambridge University Press
Page : 180 pages
File Size : 51,9 Mb
Release : 1991-11-21
Category : Nature
ISBN : 0521401100
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.
Author : Sir John Frederick William Herschel
Publisher : Unknown
Page : 20 pages
File Size : 55,5 Mb
Release : 1983
Category : Astronomy
ISBN : UOM:39015015943999
Author : Guangli Huang,Victor F. Melnikov,Haisheng Ji,Zongjun Ning
Publisher : Springer
Page : 424 pages
File Size : 45,6 Mb
Release : 2018-01-31
Category : Science
ISBN : 9789811028694
This book provides results of analysis of typical solar events, statistical analysis, the diagnostics of energetic electrons and magnetic field, as well as the global behavior of solar flaring loops such as their contraction and expansion. It pays particular attention to analyzing solar flare loops with microwave, hard X-ray, optical and EUV emissions, as well as the theories of their radiation, and electron acceleration/transport. The results concerning influence of the pitch-angle anisotropy of non-thermal electrons on their microwave and hard X-ray emissions, new spectral behaviors in X-ray and microwave bands, and results related to the contraction of flaring loops, are widely discussed in the literature of solar physics. The book is useful for graduate students and researchers in solar and space physics.
Author : André Balogh,Hugh Hudson,Kristóf Petrovay,Rudolf Steiger
Publisher : Springer
Page : 602 pages
File Size : 52,9 Mb
Release : 2015-04-16
Category : Science
ISBN : 9781493925841
A collection of papers edited by four experts in the field, this book sets out to describe the way solar activity is manifested in observations of the solar interior, the photosphere, the chromosphere, the corona and the heliosphere. The 11-year solar activity cycle, more generally known as the sunspot cycle, is a fundamental property of the Sun. This phenomenon is the generation and evolution of magnetic fields in the Sun’s convection zone, the photosphere. It is only by the careful enumeration and description of the phenomena and their variations that one can clarify their interdependences. The sunspot cycle has been tracked back about four centuries, and it has been recognized that to make this data set a really useful tool in understanding how the activity cycle works and how it can be predicted, a very careful and detailed effort is needed to generate sunspot numbers. This book deals with this topic, together with several others that present related phenomena that all indicate the physical processes that take place in the Sun and its exterior environment. The reviews in the book also present the latest theoretical and modelling studies that attempt to explain the activity cycle. It remains true, as has been shown in the unexpected characteristics of the first two solar cycles in the 21st century, that predictability remains a serious challenge. Nevertheless, the highly expert and detailed reviews in this book, using the very best solar observations from both ground- and space based telescopes, provide the best possible report on what is known and what is yet to be discovered. Originally published in Space Science Reviews, Vol 186, Issues 1-4, 2014.
Author : Howard L. DeMastus,Donald Howard Menzel
Publisher : Unknown
Page : 56 pages
File Size : 55,9 Mb
Release : 1964
Category : Solar activity
ISBN : CHI:68956698
Refinements and continued operation of the combination H alpha prominence and green coronal camera provided motion pictures and daily surveys of prominences and corona. The H alpha flare patrol underwent significant improvements, and data acquisition rates were increased. Patrol observers became further engaged in both flare warning and subjective prediction services. Spectrographic observations of the solar corona and transient limb phenomena provided a continuation of routinely observed green and red coronal emission lines as well as a vast collection of special observations of bright limb phenomena. A white-light sunspot camera gave pictures of sunspots, granulation, and fine structure. Various theoretical and analysis studies were undertaken, based on the extensive patrol data, and on data from the Sacramento Peak 16-inch coronagraph and coelostat systems and their auxiliary spectrographs. (Author).
Author : John T. Jefferies
Publisher : Unknown
Page : 56 pages
File Size : 53,7 Mb
Release : 1965
Category : Electromagnetism
ISBN : UOM:39015095127224
Various aspects of solar flares such as dynamic phenomena, the relation to magnetic fields, electromagnetic radiations, particle emissions, and flare loops are discussed with attempts at classification in terms of observable effects. Discrepancies in defining the mechanisms that must exist stress the need for further observations. (Author).
Author : Delos C. Jensen,Hans J. E. Fischer
Publisher : Unknown
Page : 458 pages
File Size : 44,6 Mb
Release : 1967
Category : Astronomical observatories
ISBN : UOM:39015095128206
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.
Author : Lee Macdonald
Publisher : Springer Science & Business Media
Page : 189 pages
File Size : 51,7 Mb
Release : 2012-12-06
Category : Science
ISBN : 9781447100539
The Sun is the brightest and most accessible object in the sky, and it has much to offer the amateur astronom er with modest equipment. On most days it shows sunspots and other features that displaya wealth of fine detail and change their appearance strikingly from day to day. But observing the Sun can be dangerous. NEVER look at the Sun through a telescope or other optical aid, even for a brief instant. The Sun's intense radiation, amplified and focused by a telescope, will almost certainly cause eye injury and could weIl lead to complete blindness. Do not attempt any solar observing until you have read and understood the safety precautions and observing advice set out in Chapter 2 of this book - even if you think you have the correct equipment. Be especially wary about using filters to observe the Sun. If you have a filter that makes the Sun look dark, it is not necessarily safe, as it is largely the Sun's invisible radiation that is harmful to the eye. But provided you use the correct techniques, such as projecting the solar image onto a screen or using a specially designed, quality solar filter that fits over the telescope aperture, it is quite easy to observe the Sun safely.
Author : Paul M. Kalaghan,Larry E. Telford
Publisher : Unknown
Page : 58 pages
File Size : 49,5 Mb
Release : 1970
Category : Millimeter waves
ISBN : UOM:39015095296979
The advent of manned space flights has focused attention on the biological threat posed by solar proton flares. In an effort to close one of the gaps in the observation of the solar spectrum, AFCRL has initiated a high resolution millimeter wavelength solar observation program. This report covers the observational approach and initial findings of this program based upon observations from May to December 1968. The equipment and procedures used to produce spectroheliograms at 8.6 mm, using the AFCRL 29-ft Millimeter Wave Antenna, are described. The quiet sun at 8.6 mm appeared to have a brightness temperature of 8400 plus or minus 600 K blackbody and a 'radio diameter' 3 percent greater than the optical disk. The presence of active regions during this period was characterized by localized enhanced regions exhibiting temperature increases from 1 to 28 percent of the quiet sun level. The enhancement and the positions of these regions have been compared with 9.1-cm radio data and various other optical data. The locations of the 8.6-mm enhanced regions are contained within calcium plages. All proton events observed originated only in highly enhanced (Class III) regions. Further observations are in progress to increase the sample size of observed proton events to further refine the possibility of prediction of these events. (Author).
Author : Rasmus E. Benestad
Publisher : Springer Science & Business Media
Page : 349 pages
File Size : 46,6 Mb
Release : 2006-08-31
Category : Science
ISBN : 9783540306214
In its revised 2nd edition, this book examines current understanding of the relationship between sunspots and the Earth's climate. Opening with a brief historical review, the text moves on to scrutinize the various current hypotheses. The focus is on how information on the solar cycle and Earth's climate is gathered, and includes discussion of observations, methododology and the physics involved, with the necessary statistics and analysis also provided.
Author : Lyndsay Fletcher,Petr Heinzel
Publisher : Springer
Page : 0 pages
File Size : 47,7 Mb
Release : 2018-07-05
Category : Science
ISBN : 940241441X
This volume is a collection of research articles on the subject of solar flares and flares on other cool stars, which are currently extensively studied using new ground- and space-based instruments, together with highly sophisticated numerical simulations. The collection memorializes the work of a pioneer in the study of solar physics, Professor Zdenek Švestka (1925 Prague – 2013 Bunschoten), a leading expert in the field of solar flares and the co-founder and Editor-in-Chief of the journal Solar Physics. The book contains many contributions to the conference “Solar and Stellar Flares: Observations, simulations and synergies”, held in Prague during 23 – 27 June 2014, organised in honor and memory of Professor Švestka. Originally published as Topical Issue of Solar Physics, Vol. 290, Issue 12, 2015.
Author : Richard Anthony Proctor
Publisher : Unknown
Page : 552 pages
File Size : 54,6 Mb
Release : 1871
Category : Eclipses
ISBN : NYPL:33433069107294
Author : Mark Washburn
Publisher : Houghton Mifflin Harcourt P
Page : 240 pages
File Size : 42,6 Mb
Release : 1981
Category : Solar energy
ISBN : OSU:32435003049541