Zero-spacing interferometer for measurement of continuum spectrum of the low radio frequency background

Raghunathan, A.; Patra, N.; Shankar, N.; Ekers, Ronald; Subrahmanyan, R.

doi:10.1109/URSIGASS.2011.6051278

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Authors

Raghunathan, A.

Patra, N.

Shankar, N.

Ekers, Ronald

Subrahmanyan, R.

Date

2011

Type

Conference Paper

Metadata

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Citation

Raghunathan, A. and Patra, N. and Shankar, N. and Ekers, R. and Subrahmanyan, R. 2011. Zero-spacing interferometer for measurement of continuum spectrum of the low radio frequency background.

Source Title

2011 30th URSI General Assembly and Scientific Symposium, URSIGASS 2011

DOI

10.1109/URSIGASS.2011.6051278

ISBN

9781424451173

School

Curtin Institute of Radio Astronomy (Engineering)

URI

http://hdl.handle.net/20.500.11937/44240

Collection

Curtin Research Publications

Abstract

We have developed an interferometer method for measurement of broad-band spectrum of the low radio frequency celestial radiation background, which is of importance in understanding the Epoch of Reionization, when the first stars and galaxies formed in the evolving universe. We have used two antennas in a short-spacing east-west interferometer mode, with a resistive semi-transparent screen in between. The system operates in the frequency range 87.5 to 175 MHz, suitable for probing the evolution in the state of the gas during cosmological epochs in the redshift range 7 - 15. © 2011 IEEE.