Radio Emissions: Extragalactic Radio Sources . Papers from a symposium, Albuquerque, N.M., Aug. 1981. David S. Heeschen and Campbell M. Wade, Eds. Reidel, Boston, 1982 (distributor, Kluwer Boston, Hingham, Mass.). xviii, 490 pp., illus. Cloth, $54.50; paper, $26. International Astronomical Union Symposium no. 97.

Science ◽  
1982 ◽  
Vol 217 (4564) ◽  
pp. 1030-1030
Author(s):  
Bruce Balick
Keyword(s):  
Radio Sources ◽  
International Astronomical Union ◽  
Radio Emissions ◽  
Extragalactic Radio Sources ◽  
International Astronomical

On discussion of the consequences of revolution in astrometry at the start of XXI century

2018 ◽  
Vol 930 (12) ◽  
pp. 44-53 ◽  
Author(s):  
S.A. Tolchelnikova
Keyword(s):  
Reference System ◽  
Radio Sources ◽  
International Astronomical Union ◽  
New Born ◽  
International Astronomical ◽  
Optical Reference

The purpose of the paper is to draw attention to the problems emerged in optical astrometry. It had to be developed by specialists in a new-born branch of radio physics named radio astrometry. The methods of the science with ancient origin were not familiar to them. The first step of reforms was the decision of International Astronomical Union about replacement of the International optical reference system by the radio reference system ICRS (ICRF). The decision retarded the development not only of fundamental astrometry and related sciences, but of astrophysics as well. 19 years passed after the decision, but radio frame (ICRF) is not used for reference either in space or in ground-based observations, or in geodesy as a reference for coordinates on Earth. The arguments of those who lobbied for the transition to radio sources remain unconfirmed

scholarly journals “The sky seems heavy with clouds”: Arthur S. Eddington and the IAU

2018 ◽  
Vol 13 (S349) ◽  
pp. 178-183
Author(s):  
Florian Laguens
Keyword(s):  
Second World War ◽  
International Astronomical Union ◽  
Scientific Career ◽  
World War ◽  
International Astronomical ◽  
Second World

AbstractThis paper addresses the relationships between Arthur S. Eddington, former director of the Cambridge Observatory (1914-1944), with the International Astronomical Union. It is demonstrated that the Union was related to every major moment in Eddington’s scientific career. New historical elements are brought forward, in the last section of the paper, to demonstrate Eddington’s action in favour of German colleagues during the Second World War.

scholarly journals International Schools for Young Astronomers (ISYA): a programme of the International Astronomical Union

2006 ◽  
Vol 2 (SPS5) ◽  
pp. 221-228 ◽  
Author(s):  
Michèle Gerbaldi
Keyword(s):  
International Schools ◽  
Rapid Development ◽  
Data Access ◽  
International Astronomical Union ◽  
Information And Communications Technologies ◽  
The Past ◽  
Data Archives ◽  
International Astronomical ◽  
Communications Technologies

AbstractThis paper outlines the main features of the International Schools for Young Astronomers (ISYA), a programme developed by the International Astronomical Union (IAU) in 1967. The main goal of this programme is to support astronomy in developing countries by organizing a school lasting 3 weeks for students with typically a M.Sc. degree. The context in which the ISYA were developed has changed drastically over the past 10 years. We have moved from a time when access to any large telescope was difficult and mainly organized on a national basis, to the situation nowadays where data archives are established at the same time that any major telescope, ground-based or in space, is built, and these archives are accessible from everywhere. The concept of the virtual observatory reinforces this access. However, the rapid development of information and communications technologies and the increasing penetration of internet have not yet removed all barriers to data access. The role of the ISYA is addressed in this context.

Super-luminal expansion in extragalactic radio sources

Nature ◽  
1977 ◽  
Vol 267 (5608) ◽  
pp. 211-216 ◽  
Author(s):  
R. D. Blandford ◽  
C. F. McKee ◽  
M. J. Rees
Keyword(s):  
Radio Sources ◽  
Extragalactic Radio Sources

Origin of the central radio gaps in extragalactic radio sources

1992 ◽  
Vol 187 (2) ◽  
pp. 209-214 ◽  
Author(s):  
I. E. Ekejiuba ◽  
P. N. Okeke ◽  
S. E. Okoye
Keyword(s):  
Radio Sources ◽  
Extragalactic Radio Sources
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