This document provides information about Prof. Peter T. Gallagher and the Astrophysics Research Group at Trinity College Dublin. It discusses the history of Dunsink Observatory, its role as the residence of the Andrews Professor of Astronomy, and notable figures like William Rowan Hamilton. It also lists Gallagher's contact information and provides images of radio telescopes and students working in the control room. Research areas mentioned include the quiet sun, sunspots, solar flares, and space weather. Universities involved in Irish astrophysics research are also listed.

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

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

3. o Dunsink Observatory built in 1780s from Provost Andrews bequest.
o Residence of Andrews Professor of Astronomy/Royal Astronomer of
Ireland.

4. o William Rowan Hamilton (1805-1865)
o Appointed Andrews Professor at age of 22!
o Huge contributions to optics and mechanics
o Invented quaternions:

5. Culture Night 2012 at Dunsink

7. peter.gallagher@tcd.ie

9. peter.gallagher@tcd.ie

14. Nobeyama Radioheliograph, Japan

16. Nancay Radioheliograph, France Solar radio burst (164 MHz)

17. 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.

19. o Loca%on
of
Leviathan
telescope
from
1840s
o Largest
op%cal
telescope
in
the
world
from
the
1840s
to
1920s.
Birr Castle

20. M51 Whirlpool “Nebula”
3rd Earl of Rosse

23. Happy research students in
the control room!

24. peter.gallagher@tcd.ie

27. Existing
Proposed

30. Tarp-covered
antennas

32. Stars and Planets
Space Weather
The Universe

33. 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