radio astronomy & dark ages

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Radio Astronomy & Dark Ages …. at RSAA

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Radio Astronomy & Dark Ages. …. at RSAA. Radio astronomy…. Frank Briggs, Carole Jackson (RSAA staff) Dave Jauncey, Jim Lovell (ATNF/Tidbinbilla) Geoff Bicknell, Ralph Sutherland (theory) Ken Freeman, Helmut Jerjen (HI, gal. kinematics) + … - PowerPoint PPT Presentation

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Page 1: Radio Astronomy & Dark Ages

Radio Astronomy & Dark Ages

…. at RSAA

Page 2: Radio Astronomy & Dark Ages

Radio astronomy…

• Frank Briggs, Carole Jackson (RSAA staff)

• Dave Jauncey, Jim Lovell (ATNF/Tidbinbilla)

• Geoff Bicknell, Ralph Sutherland (theory)

• Ken Freeman, Helmut Jerjen (HI, gal. kinematics)

• + …

• … Mills Cross -> Molonglo Synthesis Telescope

Page 3: Radio Astronomy & Dark Ages

Molonglo Telescope

2 arms: 1.6 km X 12m

redshifted Hydrogen

Page 4: Radio Astronomy & Dark Ages

…the end of The Dark Age …

Page 5: Radio Astronomy & Dark Ages

Cut off fromview of opticalwavelengths !!!

nHI

nHI +nHII 10-3

If neutral fraction

>

Page 6: Radio Astronomy & Dark Ages
Page 7: Radio Astronomy & Dark Ages

Global Signal…

20 mK

Page 8: Radio Astronomy & Dark Ages

10 arcmin

Page 9: Radio Astronomy & Dark Ages

Goal of new telescope: “LOFAR” = Low Frequency Array

Possible site in Western Australia

Page 10: Radio Astronomy & Dark Ages

Upcoming events…

18 Dec ATNF Epping: Global signature workshop

30,31 Jan Sydney Uni: Low Frequency Universe Wkshp

2-9 Feb visit by Lofar delegation to tour possible site in WA

Jan/Feb – exchange seminars with RSPhysE