Setting Up a Radio Astronomy Station

2010 ◽  
pp. 99-102
Author(s):  
Jeff Lashley
Keyword(s):  
Radio Astronomy

Phased Arrays for Radio Astronomy, Remote Sensing, and Satellite Communications

2018 ◽  
Author(s):  
Karl F. Warnick ◽  
Rob Maaskant ◽  
Marianna V. Ivashina ◽  
David B. Davidson ◽  
Brian D. Jeffs
Keyword(s):  
Remote Sensing ◽  
Radio Astronomy ◽  
Phased Arrays ◽  
Satellite Communications

Superconducting Terahertz Receivers for Space and Ground-based Radio Astronomy

2020 ◽  
Author(s):  
Jacques Lepine ◽  
Huabing Wang ◽  
Coenrad Fourie ◽  
Sheng-Cai Shi ◽  
Andrey Baryshev ◽  
...  
Keyword(s):  
Radio Astronomy

Hybrid Algorithm of Dispersion Delay Retrieval and Removal in Radio Astronomy

2020 ◽  
Author(s):  
Oleg Ulyanov ◽  
Alisa Shevtsova ◽  
Serge Yerin ◽  
Oleksander Konovalenko ◽  
Vyacheslav Zakharenko ◽  
...  
Keyword(s):  
Radio Astronomy ◽  
Hybrid Algorithm

scholarly journals A distinct negative leader propagation mode

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
O. Scholten ◽  
B. M. Hare ◽  
J. Dwyer ◽  
N. Liu ◽  
C. Sterpka ◽  
...  
Keyword(s):  
Radio Telescope ◽  
Electric Discharge ◽  
Radio Astronomy ◽  
Propagation Mode ◽  
Common Phenomenon ◽  
High Charge ◽  
Initial Stage ◽  
Lightning Initiation ◽  
The Common

AbstractThe common phenomenon of lightning still harbors many secrets such as what are the conditions for lightning initiation and what is driving the discharge to propagate over several tens of kilometers through the atmosphere forming conducting ionized channels called leaders. Since lightning is an electric discharge phenomenon, there are positively and negatively charged leaders. In this work we report on measurements made with the LOFAR radio telescope, an instrument primarily build for radio-astronomy observations. It is observed that a negative leader rather suddenly changes, for a few milliseconds, into a mode where it radiates 100 times more VHF power than typical negative leaders after which it spawns a large number of more typical negative leaders. This mode occurs during the initial stage, soon after initiation, of all lightning flashes we have mapped (about 25). For some flashes this mode occurs also well after initiation and we show one case where it is triggered twice, some 100 ms apart. We postulate that this is indicative of a small (order of 5 km$$^2$$ 2 ) high charge pocket. Lightning thus appears to be initiated exclusively in the vicinity of such a small but dense charge pocket.

Advances in solar radio astronomy

1982 ◽  
Vol 45 (12) ◽  
pp. 1435-1541 ◽  
Author(s):  
M R Kundu
Keyword(s):  
Radio Astronomy ◽  
Solar Radio ◽  
Solar Radio Astronomy
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