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Radio Surveys and Cosmology: Exploring Cosmic Origins at Badgery’s Creek and Molonglo

This article delves into the pivotal radio surveys and cosmological studies conducted from Badgery's Creek and Fleurs to Molonglo during the 1950s and 1960s. Highlighting key figures such as Martin Ryle, Bernie Mills, and Fred Hoyle, it showcases the groundbreaking work utilizing various frequencies and interferometer technology, including data from the 101 MHz and 85.5 MHz instruments. The collaboration within the School of Electrical Engineering led to significant advancements in understanding cosmic sources through deep surveys, including notable works like SUMSS and source evolution models.

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Radio Surveys and Cosmology: Exploring Cosmic Origins at Badgery’s Creek and Molonglo

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  1. Radio source surveys and cosmologyFrom Badgery’s Creek and Fleurs to Molonglo Gordon Robertson

  2. Cosmological heavyweights – 1950s and 1960s Martin Ryle Bernie Mills Fred Hoyle

  3. 101 MHz interferometer at Badgery’s Creek, 1950-1952 W.T. Sullivan (1984) p 148,151

  4. 85.5 MHz ‘Cross’ at Fleurs, 1954. Length 450 m W.T. Sullivan (1984) p 154

  5. The crew at Fleurs, c. 1956. L to R: K. Hawkins, C.A. Shain, O.B. Slee, B.Y. Mills, K.V. Sheridan, A.G. Little and H. Rishbeth. W.T. Sullivan (1984) p 154

  6. Flo (the lorry) at Fleurs, 1956. Bruce Slee, Alec Little and Kevin Sheridan. W.T. Sullivan (1984) p 146

  7. Aust. J. Phys. 10, 162, 1957.

  8. Aust. J. Phys. 10, 168, 1957.

  9. Proc. IRE Aust. 24, 156, 1963

  10. Collaboration with the School of Electrical Engineering

  11. The Molonglo 408 MHz 1-mile Cross (Mills Cross)

  12. M.I. Large, B.Y. Mills, A.G. Little, D.F. Crawford, and J.M. Sutton MNRAS 194, 693, 1981 and M.I. Large, L.E. Cram and A.M. Burgess Observatory 111, 72, 1991

  13. Grad student in the driver’s seat, c. 1973

  14. The KDF9 computer

  15. Small-area deep surveys with Molonglo Cross Fax plot of single scan data from 11 minutes observation (dec zone -62) KDF9 plotter output for same area, averaged data (Neff=12)

  16. Grad student in the paperless office, c. 1975

  17. Source counts from Molonglo, epoch 1976

  18. Source evolution models to fit counts, 1976

  19. SUMSS – source counts epoch 2003 (843 MHz)

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