Mathematics

Research Interests:

Astrophysics : Star formation, High energy astrophysics, Computational fluid dynamics

Selected Peer Reviewed Journals

• Delaney S. Dempsey P. Duffy P. Downes T.P. 2012. A new time-dependent finite-difference method for relativistic shock acceleration. Monthly Notices Of The Royal Astronomical Society, 420, 4, pp3360-3367.
• Jones, A.C. Downes, T.P. 2012. The Kelvin-Helmholtz instability in weakly ionized plasmas - II. Multifluid effects in molecular clouds. Monthly Notices Of The Royal Astronomical Society, 420, 1, pp817-828.
• Jones, A.C. Downes, T.P. 2011. The Kelvin-Helmholtz instability in weakly ionized plasmas: ambipolar-dominated and Hall-dominated flows. Monthly Notices Of The Royal Astronomical Society, 418, 1, pp390-400.
• Downes, T.P. O'Sullivan, S. 2011. Multifluid Magnetohydrodynamic Turbulent Decay. Astrophysical Journal, 730, 1, pp12-23.
• Cabrit, S. Bocchi, M. Camenzind, M. Ciardi, A. de Colle, F. Downes, T. Ferreira, J. Frank, A. Gracia, J. Lebedev, S. Marrochino, A. Massaglia, S. Matsakos, T. O'Sullivan, J. Stehlé, C. Stute, M. Suzuki-Vidal, F. Tesileanu, O. Tsinganos, K. Zanni, C. 2009. Dynamics of magnetized YSO jets: Examples of results from the JETSET network. Revista Mexicana De Astronomia Y Astrofisica, 36, , pp171-178.
• Downes, T.P. O'Sullivan, S. 2009. Non-ideal MHD turbulent decay in molecular clouds. Astrophysical Journal, 701, 2, pp1258-1268.
• Mullen, M. Brennan, C. Downes, T.P. 2009. A Hybridized Forward Backward Method Applied to Electromagnetic Wave Scattering Problems. Ieee Transactions On Antennas And Propagation, 57, 6, pp1846-1850.
• Shadmehri, M. Downes, T.P. 2008. The role of Kelvin-Helmholtz instability in dusty and partially ionized outflows. Monthly Notices Of The Royal Astronomical Society, 387, 3, pp1318-1322.
• Ferrand, G. Downes, T. Marcowith, A. 2008. MARCOS, a numerical tool for the simulation of multiple time-dependent non-linear diffusive shock acceleration. Monthly Notices Of The Royal Astronomical Society, 383, 1, pp41-56.
• Shadmehri, M. Downes, T.P. 2007. Kelvin Helmholtz instability in a weakly ionized layer. Astrophysics And Space Science, 312, 1-2, pp79-84.
• Downes, T.P., Cabrit, S. 2007. Jet-driven molecular outflows from Class 0 sources: younger and stronger than they seem?. Astronomy & Astrophysics Supplement Series (1980-2000), 471, , pp873-884.
• O'Sullivan, S., Downes, T.P. 2007. A three-dimensional numerical method for modelling weakly ionized plasmas. Monthly Notices Of The Royal Astronomical Society, 376, , pp1648-1658.
• O'Sullivan, S., Downes, T.P. 2006. Numerical modeling of weakly ionized plasmas. 359, , pp178-.
• O'Sullivan, S., Downes, T.P. 2006. An explicit scheme for multifluid magnetohydrodynamics. Monthly Notices Of The Royal Astronomical Society, 366, , pp1329-1336.
• Keegan, R., Downes, T.P. 2005. Long-duration simulations of the evolution of jet-driven molecular outflows. Astronomy & Astrophysics Supplement Series (1980-2000), 437, , pp517-524.
• van der Swaluw, E. Downes, T.P. Keegan, R. 2004. An evolutionary model for pulsar-driven supernova remnants - a hydrodynamical model. Astronomy & Astrophysics Supplement Series (1980-2000), 420,, pp937-944.
• Coffey, D. Downes, T.P. Ray, T.P. 2004. The evolution and simulation of the XZ Tauri outburst. Astronomy & Astrophysics Supplement Series (1980-2000), 419,, pp593-598.
• Downes, T.P., Cabrit, S. 2003. The mass-velocity and intensity-velocity relations in jet-driven molecular outflows. Astronomy & Astrophysics Supplement Series (1980-2000), 403,, pp135-140.
• van der Swaluw, E., Achterberg, A., Gallant, Y.A., Downes, T.P., Keppens, R. 2003. Interaction of high-velocity pulsars with supernova remnant shells. Astronomy & Astrophysics Supplement Series (1980-2000), 397,, pp913-920.
• Downes, T.P., Duffy, P., Komissarov, S.S. 2002. Relativistic Blastwaves and Synchrotron Emission. Monthly Notices Of The Royal Astronomical Society, 332,, pp144-*.
• Downes, T.P., Ray, T.P. 1999. On the transfer of momentum from stellar jets to molecular outflows. Astronomy & Astrophysics Supplement Series (1980-2000), 345,, pp977-985.
• Downes, T.P., Ray, T.P. 1998. Numerical simulations of the Kelvin-Helmholtz instability in radiatively cooled jets. Astronomy & Astrophysics Supplement Series (1980-2000), 331,, pp1130-1142.
• Downes, T.P., Ray, T.P. 1996. Numerical Simulations of H_2 Emission in Jets from Young Stellar Objects. Astrophysical Letters And Communications, 34,, pp309-314.

Selected Books

• . Jets From Young Stars V: High Performance Computing and Applications, Springer-Verlag, 2009.

Selected Chapters

• Downes, T.P. 2009. Driving Mechanisms for Molecular Outflows. Protostellar Jets in Context, pp395-404.
• Jones, A.C. Shadmehri, M. Downes, T.P. 2009. Multifluid Simulations of the Kelvin-Helmholtz Instability in a Weakly Ionised Plasma. Protostellar Jets in Context, pp547-549.
• Downes, T.P. 2009. Large-Scale Jet Simulations. Jets From Young Stars V: High Performance Computing and Applications, Lecture Notes in Physics, Volume 791, pp137-153.

Selected Non-peer Reviewed Journals

• Downes, T. P. 2012. Multifluid Magnetohydrodynamic Turbulence in Weakly Ionised Astrophysical Plasmas. ASP Conference Series, pp15-21.
• Downes, T. P.; O'Sullivan, S. 2010. Non-ideal MHD Turbulent Decay in Molecular Clouds. ASP Conference Series, pp3-7.
• Cabrit, S.; Bocchi, M.; Camenzind, M.; Ciardi, A.; de Colle, F.; Downes, T.; Ferreira, J.; Frank, A.; Gracia, J.; Lebedev, S.; Marrochino, A.; Massaglia, S.; Matsakos, T.; O'Sullivan, J.; Stehlé, C.; Stute, M.; Suzuki-Vidal, F.; Tesileanu, O.; Tsinganos, K.; Zanni, C. 2009. Dynamics of magnetized YSO jets: Examples of results from the JETSET network. RevMexAA, 36, pp171-178.
• Ferrand, G. Downes, T.P. Marcowith, A. 2008. Simulations of time-dependent non-linear multiple diffusive shock acceleration. Proceedings of the 30th International Cosmic Ray Conference. July 3 - 11, 2007, Mérida, Yucatán, Mexico., pp267-270.
• Downes, T.P. O'Sullivan, S. 2008. Implications of the Hall Effect for Turbulent Molecular Clouds. Numerical Modeling of Space Plasma Flows: Astronum 2007 ASP Conference Series, 385, pp12-.
• O'Sullivan, S. Downes, T.P. 2008. Numerical Modeling of Weakly Ionized Plasmas. Numerical Modeling of Space Plasma Flows: Astronum 2007 ASP Conference Series, 385, pp174-.
• O'Sullivan, S. Downes, T.P. 2006. Numerical Modeling of Weakly Ionized Plasmas. Numerical Modeling of Space Plasma Flows: Astronum-2006 ASP Conference Series, Volume 359, Proceedings of the Conference Held 26-30 March, 2006, in Palm Springs, California, USA, pp178-.
• Corkery, S., Downes, T. P. 2005. The Stability of Rotating Jets: Numerical Simulations. Protostars and Planets V, Proceedings of the Conference held October 24-28, 2005, in Hilton Waikoloa Village, Hawai'i. LPI Contribution No. 1286, pp8548-.
• Downes, T.P., Cabrit, S. 2005. Inferred Versus Actual Characteristics of Molecular Outflows - Some Pitfalls. Protostars and Planets V, Proceedings of the Conference held October 24-28, 2005, in Hilton Waikoloa Village, Hawai'i.LPI Contribution No. 1286, pp8446-.
• O'Sullivan, S., Downes, T.P. 2005. Multifluid Magnetohydrodynamics: An Explicit Approach. Protostars and Planets V, Proceedings of the Conference held October 24-28, 2005, in Hilton Waikoloa Village, Hawai'i. LPI Contribution No. 1286, pp8249-.
• O'Sullivan, S. Downes, T.P. 2005. Explicit methods for multifluid MHD. ASTROPHYSICAL SOURCES OF HIGH ENERGY PARTICLES AND RADIATION. AIP Conference Proceedings, 801, pp393-394.
• van der Swaluw, E., Downes, T.P. 2004. A key to pulsar wind bubble morphologies: hydrodynamical simulations. Young Neutron Stars and Their Environments, IAU Symposium no. 218, held as part of the IAU General Assembly, 14-17 July, 2003 in Sydney, Australia, Ed. F. Camilo, B. M. Gaensler, pp175-178.
• Coffey, D., Downes, T., Ray, T.P. 2003. Evolution and simulation of the XZ Tauri outburst. Star Formation at High Angular Resolution, proceedings of IAU Symposium No 221, eds M. Burton, R Jayawardhana & T. Bourke,
• Downes, T.P., Cabrit, S. 2003. Jet-accelerated molecular outflows: the mass-velocity and intensity-velocity relations. RevMexAA (Serie de Conferencías), 15, pp120-122.
• Downes, T.P., Duffy, P., Komissarov, S. 2001. Light curves and spectra from gamma ray bursts. Exploring the Gamma-Ray Universe, Proceedings of the 4th Integral Workshop, Eds. A. Gimenez, V. Reglero, & C. Winkler, ESA SP-459, pp411-415.
• Downes, T.P., Duffy, P., Komissarov, S. 2001. Simulations of synchrotron emission from gamma-ray bursts. Similarities and Universality in Relativistic Flows, Proceedings of the PhD Euroconference, Mykonos (Greece), 2000, Eds. M. Georganopoulos, A. Guthmann, K. Manolakou, A. Marcowith (Logos-Verlag), pp118-125.
• Duffy, P., Downes, T.P., Gallant, Y.A., Kirk, J.G. 1999. Relativistic shock acceleration. Proceedings of the International Cosmic Ray Conference, Cracow (Poland), 5-10 September 1999, eds. Ostrowski, M., Schlickeiser, R., pp246-255.
• Downes, T.P., Ray, T.P., Drury, L. O'C. 1997. Numerical simulations of the Kelvin-Helmholtz instability in non-adiabatic jets. Poster proceedings of IAU Symposium No. 182, eds. F. Malbet and A. Castets, pp98-100.
• Downes, T.P. 1995. Numerical simulations of H_2 emission from stellar jets. Proceedings of the Heidelberg Conference in honour of Prof. H. Elsasser, eds. S.V.W. Beckwith, A. Natta, J. Staude,Lecture Notes in Physics Series, pp804-808.

• Downes, T.P, Numerical Simulations of H_2 Emission from Stellar Jets, Disks and Outflows Around Young Stars, - , Heidelberg, Germany
• Keegan, R. Downes, T.P., Long term evolution of jet-driven molecular outflows , Cores, Disks and Ouflows, 01-JUL-04 - 05-JUL-04, Banff, Canada
• van der Swaluw, E Downes, T.P., A Key to Pulsar Wind Bubble Morphologies: Hydrodynamical Simulations, Young Neutron Stars and Their Environments, IAU Symposium no. 218, 14-JUL-03 - 17-JUL-03, Sydney, Australia
• Downes, T.P., & Cabrit, S., The mass- and intensity-velocity relations in molecular outflows, NAM2003, 07-APR-03 - 11-APR-03, Dublin, Ireland
• Downes, T.P., Cabrit, S., Jet-accelerated molecular outflows: the mass-velocity and intensity-velocity relations, Winds, Bubbles and Explosions, 09-SEP-02 - 13-SEP-02, Patzcuaro, Michoacan, Mexico
• Downes, T.P., Duffy, P., Komissarov, S., Simulations of Synchrotron Emission from Gamma-Ray Bursts, Similarities and Universality in Relativistic Flows (SURF 2000), 01-OCT-00 - 05-OCT-00, Mykonos, Greece
• Downes, T.P., The status of GRB simulations, Ninth AstroPlasma Physics Workshop, 26-SEP-00 - 29-SEP-00, Westport, Ireland
• Downes, T.P., Duffy, P., Komissarov, S., Light Curves and Spectra from Gamma Ray Bursts, The 4th Integral Workshop: Exploring the Gamma-ray Universe, 04-SEP-00 - 08-SEP-00, Alicante, Spain
• Downes, T.P., Simulations of spectra and light-curves from gamma-ray bursts, Eighth AstroPlasma Physics Workshop, 21-MAY-00 - 24-MAY-00, Evora, Portugal
• Downes, T.P., , Sixth AstroPlasma Physics Workshop, 26-OCT-99 - 29-OCT-99, Zeist, The Netherlands
• Downes, T.P., Numerical modelling of ultra-relativistic shock acceleration, Fifth AstroPlasma Physics Workshop, 22-JUN-99 - 25-JUN-99, Kittendorf, Germany
• Downes, T.P., Towards a self-consistent code for modelling acceleration of cosmic rays at relativistic shocks, Fourth AstroPlasma Physics Workshop, 02-MAR-99 - 05-MAR-99, Bordeaux, France
• Downes, T.P., Numerical simulations of momentum distribution from stellar jets, Protostars and Planets IV, 06-JUL-98 - 11-JUL-98, Santa Barbara, California, USA
• Downes, T.P., The Kelvin-Helmholtz Instability in Cooled Jets, Second Astroplasmic Physics Workshop, 12-MAY-98 - 15-MAY-98, Dryburgh, Scotland
• Downes, T.P., Ray, T.P., Drury, L. O'C., Numerical Simulations of the Kelvin-Helmholtz instability in non-adiabatic jets, Herbig-Haro Objects and the Birth of Low Mass Stars, 20-JAN-97 - 26-JAN-97, Chamonix, France
• Downes, T.P., Numerical Simulations of H_2 emission in jets from young stellar objects, NATO ASI on Solar and Astrophysical MHD Flows, 11-JUN-95 - 22-JUN-95, Heraklion, Crete, Greece