Radio Astronomy and Radio Telescopes, History of

2012 ◽  
Keyword(s):  
Radio Astronomy ◽  
Radio Telescopes ◽  
History Of

scholarly journals INTER-DIVISION IV-V-IX / WORKING GROUP HISTORIC RADIO ASTRONOMY

2008 ◽  
Vol 4 (T27A) ◽  
pp. 344-345
Author(s):  
Wayne Orchiston ◽  
Kenneth I. Kellermann ◽  
Rodney D. Davies ◽  
Suzanne V. Débarbat ◽  
Masaki Morimoto ◽  
...  
Keyword(s):  
Radio Astronomy ◽  
Working Group ◽  
General Assembly ◽  
History Of Astronomy ◽  
Radio Telescopes ◽  
Master List ◽  
History Of ◽  
Technical Specifications ◽  
Scientific Achievements

The Working Group was formed at the IAU XXV General Assembly in Sydney, 2003, as a joint initiative of Commissions 40 Radio Astronomy and Commission 41 History of Astronomy, in order to assemble a master list of surviving historically-significant radio telescopes and associated instrumentation found worldwide, and document the technical specifications and scientific achievements of these instruments. In addition, it would maintain an on-going bibliography of publications on the history of radio astronomy, and monitor other developments relating to the history of radio astronomy (including the deaths of pioneering radio astronomers).

THE EARLY HISTORY OF RADIO ASTRONOMY

1972 ◽  
Vol 198 (1 Education in) ◽  
pp. 211-218 ◽  
Author(s):  
Gart Westerhout
Keyword(s):  
Radio Astronomy ◽  
Early History ◽  
History Of

scholarly journals Small Radio Telescopes for Education

2001 ◽  
Vol 24 (3) ◽  
pp. 307-311
Author(s):  
Koitiro Maeda ◽  
Noritaka Tokimasa
Keyword(s):  
Radio Astronomy ◽  
Solar Flares ◽  
Physics Education ◽  
Radio Telescopes ◽  
Fluorescent Lamp ◽  
Astronomy Education ◽  
Quiet Sun

AbstractWe present small radio telescopes consisting of commercial instruments for satellite TV reception. With these radio telescopes we can observe the 12 GHz emissions from the quiet sun and solar flares. Since microwaves occurring in our environment, e.g., those from a building and a fluorescent lamp, are also detectable, such radio telescopes are useful not only for radio astronomy education but also for physics education.

scholarly journals High Redshift Radio Galaxies

1996 ◽  
Vol 175 ◽  
pp. 571-576
Author(s):  
K. Meisenheimer ◽  
H. Hippelein ◽  
M. Neeser
Keyword(s):  
Radio Emission ◽  
Electromagnetic Waves ◽  
High Redshift ◽  
Radio Galaxies ◽  
Early History ◽  
Radio Telescopes ◽  
Radio Waves ◽  
History Of ◽  
The Universe ◽  
Travel Distances

One hundred years after G. Marconi recorded radio waves over a distance of more than 1000 m, the most sensitive radio telescopes are able to detect the radio emission from light travel distances at least 1.4 × 1023 times greater. The electromagnetic waves from these distant objects are red shifted by Δλ/λ = z > 4. It is not the mere distance of high redshift objects which is fascinating, but rather the fact that one looks back into the early history of the universe by observing them: Objects at a redshift of 4 shined at a time when the universe had reached only about 1/5 of its present age.

Long term 6.7 GHz methanol maser monitoring program

2017 ◽  
Vol 13 (S336) ◽  
pp. 277-278
Author(s):  
Artis Aberfelds ◽  
Ivar Shmeld ◽  
Karlis Berzins
Keyword(s):  
Radio Astronomy ◽  
Monitoring Program ◽  
Radio Telescopes ◽  
Methanol Maser ◽  
Data Registration ◽  
Methanol Masers ◽  
Maser Sources

AbstractThe first long-term maser (mainly methanol) monitoring program is under way with the radio telescopes of Ventspils International Radio Astronomy Center. The first activity of this program was to develop an observations methodology and data registration and reduction software for the Ventspils telescopes. The developed routines are to be used for maser variability monitoring, investigating short bursts of intensity and a search for new, previously unknown, maser sources. Currently the program consists of 41 methanol masers observed at 6.7 GHz, while new ones are periodically added. The maser sources are observed at 3 – 5 day intervals. It was found that most the sources display a significant level of variability with time, ranging from a few days, up to several months and, perhaps, years. In addition to non-varying masers, several types of maser variability behavior were observed, including: monotonic increases or decreases, un-periodical, quasi-periodic and periodic variations.

scholarly journals The National Radio Quiet Zone and the Green Bank RFI Environment

1991 ◽  
Vol 112 ◽  
pp. 176-180
Author(s):  
Wesley A. Sizemore
Keyword(s):  
West Virginia ◽  
Radio Astronomy ◽  
Astronomy Observatory ◽  
Radio Astronomy Observatory ◽  
Radio Transmitters ◽  
History Of

Today, I would like to discuss with you the history of the National Radio Quiet Zone, the regulation procedures for fixed radio transmitters inside the NRQZ and the RFI environment at the National Radio Astronomy Observatory (NRAO) site in Green Bank, West Virginia.

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