Download or read book Microwave Spectral Observations of Coronal Condensations written by R. M. Straka and published by . This book was released on 1970 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt: Radio coronal condensations during the 20 May 1966 and 12 November 1966 solar eclipses were measured by AFCRL at wavelengths of 3.4, 6.0, 11.1 and 21.2 cm. Almost all condensation regions showed peak flux values lower than 10 to the ( -21)st power w/sq m/Hz. The flux spectra increased very slightly with increasing frequency, suggesting that thermal bremsstrahlung was the dominant emission mechanism. Only one source had a spectrum where gyromagnetic emission became dominant and caused peaking near the 6.0-cm wavelength. This source was associated with the strong bipolar spot group in McMath plage region 8573 of 12 November. A quiet-sun model that was developed to determine the source flux accounted for the east-west asymmetry, limb brightening, and polar darkening in the radio brightness distribution of the background sun. The angular size of sources was smallest, with least variations, at the 6.0-cm wavelength. Brightness temperatures of the condensations were measured at 4,700,000 degrees K (21.2 cm) during both eclipses. Flares, radio bursts, and other electromagnetic emissions originating in coronal condensation regions can cause false signatures on surveillance radars, affect satellite orbit parameters, and create ionospheric disturbances that degrade communications. Knowledge of the condensation region development is needed for early warning and prediction of potential solar disturbances. (Author).
Download or read book Solar Eclipses and the Ionosphere written by M. A. Anastassiades and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 304 pages. Available in PDF, EPUB and Kindle. Book excerpt: It is a 10ng-standing tradition in this country for any event re1ated to solar activity to enjoy special importance. Because we enjoy the advantage of pro10nged sunny periods, we consider the incidence of some thirty c10udy days each year as a personal af front. I cannot say that we have the facu1ty to produce solar ec1ipses in order to justify an Institute on this subject to be held in Athens, but I can say that the occurrence of a solar ec1ipse over Greece wou1d present, for optica1 and solar astronomers, the highest possibi1ity of exce11ent conditions for observation. We had this opportunity during the May 20, 1966 annu1ar solar ec1ipse over North Africa and southern Europe. At that time we had the p1easure to co11aborate with a 1arge number of research groups of various nationa1ities, who insta11ed optica1 and radio instru ments near or in Lagonissi, which 1ay a10ng the centra1 path, in order to fo110w the ec1ipse. A first meeting was then organized in order to discuss methods of data handling and avai1abi1ity of resu1ts. After a pre1iminary discussion it was suggested that a 1ater meeting shou1d be organized when final resu1ts were avai1ab1e.
Download or read book Report on Research at AFCRL written by Air Force Cambridge Research Laboratories (U.S.) and published by . This book was released on 1970 with total page 400 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Solar Eclipse 1970 Bulletin written by National Science Foundation (U.S.) and published by . This book was released on 1970 with total page 408 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1987 with total page 956 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Environmental Research Papers written by and published by . This book was released on 1970 with total page 282 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Nuclear Science Abstracts written by and published by . This book was released on 1975 with total page 700 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Bibliography with Abstracts of AFCRL Publications from 1 April to 30 June 1970 written by Air Force Cambridge Research Laboratories (U.S.) and published by . This book was released on 1970 with total page 268 pages. Available in PDF, EPUB and Kindle. Book excerpt: This bibliography lists all AFCRL in-house reports, journal articles, and contractor reports issued from 1 April to 30 June 1970. Abstracts are included.
Download or read book Information Bulletin of Solar Radio Observatories in Europe written by and published by . This book was released on 1966 with total page 174 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Highlights of Astronomy written by L. Perek and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 549 pages. Available in PDF, EPUB and Kindle. Book excerpt: The XIIlth General Assembly of the International Astronomical Union, held in Prague from 22 to 31 August, 1967, brought together more than 1800 active astron omers from 40 countries. The agenda of the Assembly ranged from administrative questions to highly intricate scientific problems. Thirty-eight Presidents of the IAU Commissions contributed by their reports to a detailed survey of Astronomy for the period 1964-67. These reports were published in the Transactions of the IAU, Volume XIIIA. Transactions volume XIIIB bring the results of the administrative meetings and of the meetings of Commissions held during the General Assembly. The present volume is devoted to the most important scientific results of the General Assembly as presented in the Invited Discourses, Joint Discussions, and at Special Meetings. It is an established policy of the Union to invite prominent astronomers to hold, during the General Assembly, formal discourses on topics of major importance due to recent significant developments. These Invited Discourses cover, as a rule, broad fields of astronomical interest and are meant to give basic information also to scien tists from other branches. Subjects which call for a more detailed technical approach are dealt with in the Joint Discussions or at Special Meetings. Here, invited speakers present authoritative surveys complemented by communications on current or envisaged projects. The proceedings of two other meetings, on Moon Probes and on Coordination of Solar Observations Made at Ground-based Observatories and with Space Vehicles, are of a sufficiently wide interest to warrant the inclusion into this volume.
Download or read book Solar Gamma X and EUV Radiation written by S.R. Kane and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 424 pages. Available in PDF, EPUB and Kindle. Book excerpt: Proceedings of IAU Symposium No. 68 held in Buenos Aires, Argentina, 11-14 June 1974, organized by the IAU in co-operation with COSPAR
Download or read book Literature 1975 Part 1 written by S. Böhme and published by Springer Science & Business Media. This book was released on 2013-04-18 with total page 640 pages. Available in PDF, EPUB and Kindle. Book excerpt: Astronomy and Astrophysics Abstracts, which has appeared in semi-annual volumes since 1969, is de voted to the recording, summarizing and indexing of astronomical publications throughout the world. It is prepared under the auspices of the International Astronomical Union (according to a resolution adopted at the 14th General Assembly in 1970). Astronomy and Astrophysics Abstracts aims to present a comprehensive documentation of literature in all fields of astronomy and astrophysics. Every effort will be made to ensure that the average time interval between the date of receipt of the original literature and publication of the abstracts will not exceed eight months. This time interval is near to that achieved by monthly abstracting journals, com pared to which our system of accumulating abstracts for about six months offers the advantage of greater convenience for the user. Volume 13 contains literature published in 1975 and received before August 15, 1975; some older literature which was received late and which is not recorded in earlier volumes is also included. We acknowledge with thanks contributions to this volume by Dr. J. Bouska, who surveyed journals and publications in the Czech language and supplied us with abstracts in English, and by the Common wealth Scientific and Industrial Research Organization (C.S.I.R.O.), Sydney, for providing titles and abstracts of papers on radio astronomy. We want to acknowledge valuable contributions to this vol ume by Zentralstelle ftir Atomkemenergie-Dokumentation, Leopoldshafen, which supported our ab stracting service by sending us retrospective literature searches.
Download or read book Report UAG written by and published by . This book was released on 1971 with total page 1072 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book High Energy Phenomena on the Sun written by R. Ramaty and published by . This book was released on 1973 with total page 664 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book High Energy Phenomena on the Sun written by Robert Gilbert Stone and published by . This book was released on 1973 with total page 656 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book High Energy Phenomena on the Sun Symposium Proceedings September 28 30 1972 written by R. Ramatry and published by . This book was released on 1973 with total page 658 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Government Reports Index written by and published by . This book was released on 1970 with total page 1144 pages. Available in PDF, EPUB and Kindle. Book excerpt:
