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Researchers at UCD

Peter Duffy

Associate Professor

School Of Physics
Science Centre - North
Belfield
Dublin 4

Tel: +353 1 7162232
Email: peter.duffy@ucd.ie

Biography

2010 - present Associate Professor, UCD School of Physics 

2002 - 2009 Senior Lecturer UCD

1996 - 2002 College Lecturer UCD 

1991 - 1996 Research Scientist, Max Planck Institute for Nuclear Physics, Heidelberg

1990 - 1991 Commercial Aeronautics Research 

1986 - 1990 PhD DIAS and TCD

1982 - 1986 B.A.(Mod.) in Theoretical Physics, TCD

Professional

 

Associations

Association: Fellow of the Royal Astronomical Society, Function/Role: *
Association: Member of the Institute of Physics, Function/Role: *
Association: Member of the American Astronomical Society and the High Energy Astrophysics division, Function/Role: *
Association: Member of the Astronomy Science Group of Ireland, Function/Role: *
Association: Member of the Irish Research Scientisits Association, Function/Role: *
     

Conference Contributions

P. Duffy; Particle Acceleration in Supernova Remnants. [Invited Lecture], Joint European and National Astronomy Meeting 97, 6th European and 3rd Hellenic Astronomical Conference, Thessalonikii, Greece, 2-5 July 1997 , Thessalonikii, Greece .
P. Duffy; Developments in Plasma Astrophysics,. [Invited Lecture], 29th Annual Institute of Physics Plasma Physics Group Conference, Belfast March 25th -March 28th 2002 , Belfast .
P. Duffy; Relativistic Shock Acceleration, Plasma Turbulence and Energetic Particles in Astrophysics. [Invited Lecture], Jagellonian University, Cracow, Poland, 5-10 September 1999 , Cracow, Poland .
               

Publications

     

Peer Reviewed Journals

Tammi, J,Duffy, P; (2009) 'Particle-acceleration time-scales in TeV blazar flares'. Mon Not R Astron Soc, 393 :1063-1069. [DOI] [Details]
Reville, B,Kirk, JG,Duffy, P; (2009) 'STEADY-STATE SOLUTIONS IN NONLINEAR DIFFUSIVE SHOCK ACCELERATION'. Astrophys J, 694 :951-958. [DOI] [Details]
Reville B. J.G. Kirk, P. Duffy, S. O'Sullivan; (2008) 'The transport of cosmic rays in self-excited magnetic turbulence'. Monthly Notices of the Royal Astronomical Society, 386 :509-515. [Details]
Tammi J., Duffy P.; (2008) 'Particle acceleration timescales in TeV Blazar flares'. Monthly Notices of the Royal Astronomical Society, . [Details]
Reville B. J.G. Kirk, P. Duffy, S. O'Sullivan; (2007) 'A cosmic ray current-driven instability in partially ionised media'. Astronomy & Astrophysics, 475 :435-439. [Details]
Reville B. J.G. Kirk, P. Duffy; (2008) 'Steady-state solutions in nonlinear diffusive shock acceleration'. Astrophysical Journal, . [Details]
Steenbrugge K.C., Blundell K.M., Duffy P.; (2008) 'Multiwavelength study of Cygnus A II. X-ray inverse-Compton emission from a relic counter-jet and implications for jet-duty cycles'. Monthly Notices of the Royal Astronomical Society, 388 :1465-1472. [Details]
Steenbrugge K.C., Blundell K.M., Duffy P.; (2008) 'Detection of a relic X-ray jet in Cygnus A'. International Journal of Modern Physics D, . [Details]
Khajenabi F., P. Duffy; (2008) 'Properties of vertically self-gravitating accretions discs with a dissipative corona'. Monthly Notices of the Royal Astronomical Society, 388 :1843-1852. [Details]
Reville B. J.G. Kirk, P. Duffy, S. O'Sullivan; (2008) 'Environmental limits on the non-resonant cosmic-ray current-driven instability'. International Journal of Modern Physics D, . [Details]
Rieger, FM; Bosch-Ramon, V; Duffy, P; ; (2007) 'Fermi acceleration in astrophysical jets'. Astrophys Space Sci, 309 :119-125. [Details]
Dempsey, P; Duffy, P; ; (2007) 'Particle acceleration at multiple internal relativistic shocks'. Astrophys Space Sci, 309 :167-171. [Details]
Dempsey, P; Duffy, P; ; (2007) 'Radiative losses and cut-offs of energetic particles at relativistic shocks'. Mon Not R Astron Soc, 378 :625-634. [Details]
Reville B. and Duffy P.; (2005) 'Particle acceleration in young SNRs and the spherical box model'. AMERICAN INSTITUTE OF PHYSICS, 801 :397-398. [Details]
Duffy P., Blundell K.M.; (2005) 'Cosmic ray transport and acceleration'. Plasma Physics and Controlled Fusion, 47 :667-678. [Details]
Dempsey P. and Duffy P.; (2005) 'Cut-offs and time dependent acceleration at relativistic shocks'. AMERICAN INSTITUTE OF PHYSICS, (801):373-374. [Details]
Miller-Jones J., Blundell K.M. and Duffy P.; (2005) 'A refined method for measuring jet speeds'. AMERICAN INSTITUTE OF PHYSICS, 797 :585-588. [Details]
Rieger F. & Duffy P.; (2004) 'Shear acceleration in relativistic astrophysical jets'. THE ASTROPHYSICAL JOURNAL, 617 :155-161. [Details]
Drury L.O'C, Kirk J.G., Duffy P.; (2000) 'Environmental and age limits on particle acceleration in supernova remnants'. AMERICAN INSTITUTE OF PHYSICS, (515):183-186. [Details]
Rieger, FM; Duffy, P; ; (2006) 'A microscopic analysis of shear acceleration'. Astrophysical Journal, 652 (2):1044-1049. [Details]
Duffy P., Drury L.O'C. and Voelk H.J.; (1994) 'Cosmic ray hydrodynamics at shock fronts'. ASTRONOMY AND ASTROPHYSICS, 291 :613-621. [Details]
Reville, B; Kirk, JG; Duffy, P; ; (2006) 'A current-driven instability in parallel, relativistic shocks'. Plasma Physics and Controlled Fusion, 48 (12):1741-1747. [Details]
Rieger, FM; Duffy, P; ; (2005) 'Particle acceleration in gamma-ray burst jets'. Astrophysical Journal, 632 (1):21-24. [Details]
Rieger, FM; Duffy, P; ; (2005) 'Particle acceleration in astrophysical shear flows'. Chinese Journal of Astronomy and Astrophysics, 5 (NA):195-200. [Details]
J. Miller-Jones, K. Blundell, M. Rupen, A. Mioduszewski, P. Duffy, A. Beasley ; (2004) 'Time-sequenced multi-radio frequency observations of Cygnus X-3 in are '. The Astrophysical Journal, 600 :368-389. [Details]
Miller-Jones, JCA; Blundell, KM; Rupen, MP; Mioduszewski, AJ; Duffy, P; Beasley, AJ; ; (2004) 'Time-sequenced multi-radio frequency observations of Cygnus X-3 in flare'. Astrophysical Journal, 600 (1):368-389. [Details]
Miller-Jones, JCA; Blundell, KM; Duffy, P; ; (2004) 'Jet evolution, flux ratios, and light-travel time effects'. Astrophysical Journal, 603 (1):21-24. [Details]
Downes, TP; Duffy, P; Komissarov, SS; ; (2002) 'Relativistic blast waves and synchrotron emission'. Monthly Notices of the Royal Astronomical Society, 332 (1):144-154. [Details]
P. Duffy, T.P. Downes, Y.A. Gallant, J.G. Kirk; (2000) 'Relativistic shock acceleration '. Plasma Turbulence and Energetic Particles in Astrophysi, :246-255. [Details]
J.G. Kirk, P. Duffy; (1999) 'Particle acceleration and relativistic shocks '. Journal of Physics G:- Nuclear and Particle Physics, 25 :163-194. [Details]
Drury, LO; Duffy, P; Eichler, D; Mastichiadis, A; ; (1999) 'On box models of shock acceleration and electron synchrotron spectra'. Astronomy and Astrophysics, 347 (1):370-374. [Details]
Kirk, JG; Duffy, P; ; (1999) 'Particle acceleration and relativistic shocks'. Journal of Physics G:- Nuclear and Particle Physics, 25 (8):163-194. [Details]
L.O'C. Drury, P. Duffy, J.G. Kirk; (1996) 'Limits on diffusive shock acceleration in dense and incompletely ionised media '. Astronomy and Astrophysics, 309 :1002-1010. [Details]
J.G. Kirk, P. Duffy, Y.A. Gallant; (1996) 'Stochastic particle acceleration at shocks in the presence of braided magnetic elds '. Astronomy and Astrophysics, 314 :1010-1016. [Details]
J.G. Kirk, P. Duffy, Y.A. Gallant ; (1996) 'Particle Acceleration at shocks in the presence of a braided magnetic '. Advances in Space Research, 19 :707-710. [Details]
P. Duffy, L. Ball, J.G. Kirk; (1995) 'A model for the radio emission from SNR 1987A '. The Astrophysical Journal, 447 :364-377. [Details]
P. Duffy, J.G. Kirk, Y.A. Gallant, R.O. Dendy ; (1995) 'Anomalous transport and particle acceleration at shocks '. Astronomy and Astrophysics, 302 :21-24. [Details]
J.G. Kirk, P. Duffy, L. Ball; (1995) 'Radio Supernovae as TeV gamma ray sources '. Astronomy and Astrophysics, 293 :37-40. [Details]
J.G. Kirk, P. Duffy, L. Ball ; (1994) 'Radio emission from SNR 1987A '. The Astrophysical Journal, 90 :807-811. [Details]
P. Duffy; (1994) 'Bohm diffusion and cosmic ray modi ed shocks '. The Astrophysical Journal, 90 :981-983. [Details]
P. Duffy; (1991) 'The second order Fermi acceleration of pick-up ions '. Cometary Plasma Processes, :287-289. [Details]
P. Duffy; (1991) 'The self consistent acceleration of cosmic rays in modi ed shocks with Bohm type diffusion '. Astronomy and Astrophysics, 262 :281-294. [Details]
P. Duffy ; (1990) 'The second order Fermi acceleration of pick-up ions '. Irish Astronomical Journal, 19 :190-191. [Details]
Duffy P.; (1990) 'Cosmic rays at 1015eV'. IRISH ASTRONOMICAL JOURNAL, (19):64-66. [Details]
P. Duffy; (1989) 'Cosmic rays above '. Irish Astronomical Journal, 19 :64-66. [Details]
Duffy P.; (1989) 'The acceleration of cometary ions by Alfven waves'. The Journal of Plasma Physics, (42):13-25. [Details]

Other Journals

Duffy P. & Blundell K.M.; (2005) 'Cosmic ray transport and acceleration' Plasma Physics and Controlled Fusion 47 :667-678. [Details]

Conference Publications

Tamm J. , P. Duffy; (2008) Particle acceleration timescales in TeV Blazar flares Proceedings of the Heidelberg Symposium on High-Energy gamma ray astronomy [Details]
Reville B. J.G. Kirk, P. Duffy; (2008) Steady state solutions to cosmic-ray modified shocks Proceedings of the Heidelberg Symposium on High-Energy gamma ray astronomy [Details]
Reville B. J.G. Kirk, S. O'Sullivan, P. Duffy; (2008) The growth of magnetic turbulence and transport of cosmic rays in supernova precursors Proceedings of the American Physical Society [Details]
Rieger F., P. Duffy; (2007) Cosmic ray acceleration and viscosity (Springer-Verlag) Relativistc Astrophysics Legacy and Cosmology  , pp.477-499 [Details]
Dempsey P. P. Duffy; (2007) Particle acceleration and radiative losses at relativistic shocks Relativistic Astrophysics Legacy and Cosmology (Springer-Verlag) , pp.371-373 [Details]
Rieger F., P. Duffy; (2006) Cosmic particle acceleration in astrophysical shear flows Highlights of Astronomy, Iternational Astronomy Union, Volume 14 , pp.103-104 [Details]
Downes T.P., P. Duffy, S. Komissarov; (2002) Light curves and spectra from gamma ray bursts Proceedings of the 4th Integral Workshop , pp.411-415 [Details]
P. Duffy, L.O'C Drury, H.J. V; (1993) The closure problem II Proceedings 23rd ICRC (Calgary) 1993 Calgary, , pp.259-262 [Details]
P. Duffy, J.G. Kirk, L. Ball ; (1993) A cosmic ray modi ed shock in SNR 1987A ? Proceedings 23rd ICRC (Calgary) 1993 Calgary, , pp.358-361 [Details]
P. Duffy, L. Ball, J.G. Kirk ; (1994) Cosmic ray acceleration and radio emission from SNR 1987A Moriond conference on Gravitation, Astrophysics and Atomic Physics 1994 *, , pp.33-40 [Details]
L.O'C Drury, P. Duffy, J.G. Kirk ; (1995) Diffusive shock acceleration in dense and incompletely ionised media Proceedings 24th ICRC (Rome) 1995 Rome, , pp.217-220 [Details]
R.O'Dendy, P. Duffy, Y.A. Gallant, J.G. Kirk ; (1995) Compound diffusion and particle acceleration at shocks Proceedings 24th ICRC (Rome) 1995 Rome, , pp.221-224 [Details]
K.G. McClements, R.O. Dendy, L.O'C. Drury, P. Duffy ; (1995) Excitation of ion cyclotron harmonic waves in cosmic ray shock precursors 3, - Proceedings 24th ICRC (Rome) 1995 Rome, , pp.281-284 [Details]
K.G. McClements, R.O. Dendy, L.O'C. Drury, P. Duffy ; (1996) Excitation of ion cyclotron harmonic waves in cosmic ray shock precursors Monthly Notices of the Royal Astronomical Society 1996 *, , pp.219-226 [Details]
J.G. Kirk, P. Duffy, R.O. Dendy ; (1996) Electron transport in the Coma cluster Proceedings of the 175th symposium of the International Astronomical Union, 1996 Kluwer Academic Publishers *, , pp.339-342 [Details]
L.T. Ball, J.G. Kirk, P. Duffy ; (1997) Electron acceleration and the radio emission from SN1987A Proc. 5th CTIO/ESO/LCO Workshop on 1987A 1997 *, [Details]
L.O'C. Drury, P. Duffy, D. Eichler, A. Mastichiadis ; (1999) On .box models of shock acceleration and electron synchrotron spectra Proceedings 26th ICRC (Salt Lake) 1999 Salt Lake, , pp.394-397 [Details]
P. Duffy, L.O'C. Drury, D. Eichler, A. Mastichiadis ; (1999) Strongly nonlinear synchrotron dominated shocks in a pure pair plasma Proceedings 26th ICRC (Salt Lake) 1999 Salt Lake, , pp.403-406 [Details]
L. O'C Drury, J.G. Kirk, P. Duffy ; (2000) Environmental and Age Limits on Particle Acceleration in Supernova Remnants AIP Conference Proceedings 2000 *, , pp.183-186 [Details]
T.P. Downes, P. Duffy, S. Komissarov ; (2001) Simulations of synchrotron emission from gamma ray bursts Proceedings of the 4th Integral Workshop 2001 *, , pp.411-415 [Details]
P. Duffy, L. Ball, V. Dwarkadas ; (2001) The transport and acceleration of test particles in hydrodynamical simulations Proceedings 27th ICRC (Hamburg) 2001 Hamburg, , pp.2047-2050 [Details]
T.P. Downes, P. Duffy, S. Komissarov ; (2001) Particle acceleration and synchrotron emission from relativistic blastwaves Proceedings 27th ICRC (Hamburg) 2001 Hamburg, , pp.2058-2061 [Details]
T. Downes, P. Duffy, S. Komissarov ; (2002) Relativistic blastwaves and synchrotron emission Monthly Notices of the Royal Astronomical Society 2002 332 *, , pp.144-154 [Details]
Rieger, F.M. and Duffy, P.; (2005) Particle Acceleration in relativistic sheer flows American Institute of Physics 801 [Details]
                                                                                         

Research

Research Interests

Theoretical Astrophysics. Particle transport and acceleration in astrophysical plasmas. Application to cosmic explosions; supernovae, gamma ray bursts and microquasars
     

Collaborators

 

External Collaborators

Research Group:
Dr Frank Rieger, Marie-Curie Postdoctoral Fellow

Dr Stephen O'Sullivan, COSMOGRID (PRTLI) Postdoctoral Fellow
Dr Joni Virtanen (SFI) - Postdoctoral Fellow from April 2006

Mr Paul Dempsey, IRCSET funded PhD student.

Mr Brian Reville, COSMOGRID (PRTLI) PhD student.