Paul Wild: Radio Astronomy and the Sun

2017 ◽  
pp. 91-130
Author(s):  
R. H. Frater ◽  
W. M. Goss ◽  
H. W. Wendt
Keyword(s):  
Radio Astronomy ◽  
The Sun

Study of the magnetospheres of active regions on the sun by radio astronomy techniques

2017 ◽  
Vol 55 (1) ◽  
pp. 1-11
Author(s):  
V. M. Bogod ◽  
T. I. Kal’tman ◽  
N. G. Peterova ◽  
L. V. Yasnov
Keyword(s):  
Radio Astronomy ◽  
Active Regions ◽  
The Sun

scholarly journals Radio astronomy and the solar system

1959 ◽  
Vol 9 ◽  
pp. 3-7
Author(s):  
F. G. Smith
Keyword(s):  
Solar System ◽  
Solar Corona ◽  
Radio Astronomy ◽  
Interplanetary Space ◽  
Outer Space ◽  
The Sun

Radio astronomy has been expanding into outer space so fast in recent years that it is pleasant to find our own solar system at last receiving the attention it deserves. In this session we are concerned with everything within the system except the sun and our own planet. I start with a question, to which I shall return later: Where does the sun end? In another session you will hear of the experiments on the far-out parts of the solar corona; here we are concerned with interplanetary space as well as with the planets themselves, and what lies within this region may or may not be considered part of the solar corona.

scholarly journals The Development of Solar Astronomy in Malaysia

2014 ◽  
Vol 38 ◽  
pp. 46-55
Author(s):  
Zety Sharizat Hamidi ◽  
N.N.M. Shariff ◽  
C. Monstein
Keyword(s):  
Solar Activity ◽  
Radio Astronomy ◽  
Low Cost ◽  
Low Frequency ◽  
Monitoring Network ◽  
Science Research ◽  
Radio Observation ◽  
The Sun ◽  
Activity Data ◽  
Solar Astronomy

Monitoring the Sun reveals a variety of fascinating and complex physical phenomena which are being studied mainly by analyzing its emission. Solar activity has an impact with space weather. The characteristic features of the climate of Malaysia are uniform temperature, very high humidity and copious rainfall. It has an average of temperature of 26.7 °C. Therefore, it is suitable to monitor the Sun. In following work, we will emphasize the development of solar astronomy in Malaysia. The ground based observation (i) optical and (ii) radio are the main region that we focused on. Optical observation has started earlier comparing with radio observation. In optical region it covers from 400 – 700 nm while in radio region, we focus from 45 MHz to 870 MHz. The number of observatories is increasing. A dedicated work to understand the Sun activity in radio region is a part of an initiative of the United Nations together with NASA in order to support developing countries participating in „Western Science‟ research. Realize how important for us to keep doing a research about the solar bursts, by using the new radio spectrometer, CALLISTO (Compound Low Cost Low Frequency Transportable Observatories) spectrometer. Malaysia is one of the earliest country from South-East Asia (ASEAN) that involve this research. One of the advantages to start the solar monitoring in Malaysia is because our strategic location as equator country that makes possible to observing a Sun for 12 hours daily throughout a year. We strongly believe that Malaysia as one of contributor of solar activity data through E-CALLISTO network. This is a very good start for developing a radio astronomy in Malaysia. With the implementation of 45 MHz - 870 MHz CALLISTO systems and development of solar burst monitoring network, a new wavelength regime is becoming available for solar radio astronomy. Overall, this article presents an overview of optical and radio astronomy in Malaysia. With the present level of the international collaboration, it is believed that the potential involvement of local and international scientist in solar astrophysics will increase.

scholarly journals 42. Radio astronomy and the origin of cosmic rays

1957 ◽  
Vol 4 ◽  
pp. 238-240 ◽  
Author(s):  
A. Unsöld
Keyword(s):  
Cosmic Rays ◽  
Radio Emission ◽  
Thermal Radiation ◽  
Radio Astronomy ◽  
The Sun ◽  
Thermal Radio ◽  
Thermal Radio Emission

At present we can observe the origin of only the solar component of cosmic rays. The sun emits cosmic rays in connexion with flares and probably also continuously on a smaller scale. Thus the emission of cosmic rays appears to be connected much more closely with non-thermal radio emission than with thermal radiation of light and heat.

Radio Waves Tell About the Universe

2005 ◽  
Author(s):  
S.Ya. Braude ◽  
V.M. Kontorovich
Keyword(s):  
Neutron Stars ◽  
Radio Astronomy ◽  
Radio Galaxies ◽  
The Sun ◽  
Radio Radiation ◽  
Radio Telescopes ◽  
Radio Waves ◽  
Evolution Of The Universe ◽  
Space Objects ◽  
The Universe

The book tells about the achievements of modern radio astronomy. Data on radio galaxies, quasars, pulsars, space masers, and other space objects emitting radio waves are presented in a popular form. The ways of evolution of stars, supernovae and radio eruptions of their remains, the formation of white dwarfs and neutron stars, the phenomena in the centers of galaxies and the fusion of galaxies responsible for the formation of radio galaxies and quasars are considered. The radio radiation of the Sun and planets is discussed. A modern view of the evolution of the universe, the origin of the relic radiation left over from the Great Eruption, and its anisotropy is presented. A separate chapter is devoted to the description of radio telescopes.

Spectral Polarimetric Observations of the Sun by the VIRAC RT-32 Radio Telescope: First Results

2013 ◽  
Vol 22 (1) ◽  
Author(s):  
D. Bezrukov
Keyword(s):  
Radio Telescope ◽  
Radio Astronomy ◽  
Microwave Emission ◽  
The Sun ◽  
Frequency Range ◽  
First Results

AbstractThe article describes microwave observations of the Sun with the radio telescope RT-32 of the Ventspils International Radio Astronomy Center. The observations were performed using a multichannel spectral polarimeter for the 6.3–9.4 GHz frequency range. A set of 2D microwave emission maps of the Sun for the Stokes I and V parameters has been obtained and analyzed.

scholarly journals Communicating ALMA with the Public in Japan

2012 ◽  
Vol 10 (H16) ◽  
pp. 639-639
Author(s):  
M. Hiramatsu
Keyword(s):  
Radio Astronomy ◽  
Public Interest ◽  
Public Outreach ◽  
The Sun ◽  
Research Topics ◽  
The Public ◽  
Night Sky ◽  
Human Side

AbstractI present the strategy and activities of the public outreach and communication of ALMA in Japan. Since most of the public is not familiar with the radio astronomy, we present the human side of ALMA to attract the public interest, as well as by showing the science results. To evoke the public interest on the radio astronomy, it is also effective to show the radio astronomy research topics on the planets, the Sun, and bright stars so that they can connect the daily night sky with the radio universe explored by ALMA.

Solar Activity in the Corona

1981 ◽  
Vol 4 (2) ◽  
pp. 132-138 ◽  
Author(s):  
D. J. McLean
Keyword(s):  
Solar Activity ◽  
Internal Structure ◽  
Observational Data ◽  
Radio Astronomy ◽  
Solar Radio ◽  
The Sun ◽  
The Core ◽  
Solar Radio Astronomy

When I began my studies of solar radio astronomy, Dr J. L. Pawsey, who then led the radio astronomy group in the Division of Radiophysics, CSIRO, explained to me that the internal structure of the Sun was ‘well understood’, thanks to a lack of conflicting observational data, but that for the observable layers of the Sun, the photosphere, chromosphere and corona, a great many mysteries remained. I am sure that he would have been amused by the recent discovery that there are not enough neutrons coming from the core of the Sun. I shall devote most of my talk to matters about which we are fairly certain, but often I will only be able to give part of the story because the details have not yet emerged from the wealth of solar mysteries.

scholarly journals 7. Progress report on the project in Radio Astronomy at the G. R. Agassiz station of Harvard Observatory

1957 ◽  
Vol 4 ◽  
pp. 42-47
Author(s):  
B. J. Bok
Keyword(s):  
Radio Astronomy ◽  
Neutral Hydrogen ◽  
Progress Report ◽  
The Sun ◽  
Joint Paper ◽  
Interstellar Clouds ◽  
Astronomical Society ◽  
American Astronomical Society ◽  
Under Construction

Two years ago I reported at the Jodrell Bank symposium on the initiation of the Agassiz Station project in Radio Astronomy. At that time the 24-ft. antenna was under construction and the electronic equipment for observation of the 21-cm. line of neutral hydrogen was being built by Harold I. Ewen, who is the co-director of the project. The first successful observations were obtained in the autumn of 1953 and reported early in 1954 (see Bok[1]). Since then two papers have been published giving the results of the first studies by Heeschen[2] and Lilley[3]; a report on the equipment and the basic programme was given by Bok and Ewen[4], Earlier this year, at the Princeton Meeting of the American Astronomical Society, Bok[5] drew heavily upon the Agassiz Station results in a paper entitled ‘Gas and Dust in Interstellar Clouds’, in which an attempt was made to blend the results of radio and optical research. We note also at this point a joint paper by Heeschen and Lilley[6] in which attention was drawn to the important role of Gould's Belt in the distribution of neutral hydrogen in the vicinity of the sun.

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