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Radio source surveys and cosmology From Badgery’s Creek and Fleurs to Molonglo Gordon Robertson.

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Presentation on theme: "Radio source surveys and cosmology From Badgery’s Creek and Fleurs to Molonglo Gordon Robertson."— Presentation transcript:

1 Radio source surveys and cosmology From Badgery’s Creek and Fleurs to Molonglo Gordon Robertson

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

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.

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

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

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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