Gallagher iaa 20121003_final

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Prof. Peter T. Gallagher Astrophysics Research Group School of Physics Trinity College Dublin www.physics.tcd.ie/astrophysics

description

Public lecture at Irish Astronomical Association talk in Belfast on October 3, 2012.

Transcript of Gallagher iaa 20121003_final

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Prof. Peter T. Gallagher Astrophysics Research Group

School of Physics Trinity College Dublin

www.physics.tcd.ie/astrophysics

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http://www.tcd.ie/Physics/Astrophysics/images/group_12.JPG

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o  Dunsink Observatory built in 1780s from Provost Andrews bequest.

o  Residence of Andrews Professor of Astronomy/Royal Astronomer of Ireland.

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o  William Rowan Hamilton (1805-1865)

o  Appointed Andrews Professor at age of 22!

o  Huge contributions to optics and mechanics

o  Invented quaternions:

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Culture Night 2012 at Dunsink

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Nobeyama Radioheliograph, Japan

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Nancay Radioheliograph, France Solar radio burst (164 MHz)

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o  Quiet Sun o  Free-free emission from electrons in hot (>1 MK) plasma.

o  Sunspots o  Cyclotron emission from electrons spiraling along magnetic fields.

o  Flares and CMEs o  Plasma emission associated with Langmuir waves. o  Gyrosynchrotron emission from near-relativistic electrons.

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o  Loca%on  of  Leviathan  telescope  from  1840s  

o  Largest  op%cal  telescope  in  the  world  

 from  the  1840s  to  1920s.  

Birr Castle

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3rd Earl of Rosse

M51 Whirlpool “Nebula”

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Happy research students in the control room!

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Proposed

Existing

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Tarp-covered antennas

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Stars and Planets

Space Weather

The Universe

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o  Trinity  College  Dublin  

o  University  College  Cork  

o  NUI  Galway  

o  Dublin  Ins%tute  for  Advanced  Studies  o  Dublin  City  University  

o  Armagh  Observatory  

o  Queen’s  University  Belfast  

o  University  College  Cork  

o  NUI  Maynooth  o  University  College  Dublin  

o  Cork  Ins%tute  of  Technology  

o  Dublin  Ins%tute  of  Technology  

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