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Professor J.G. Doyle MRIA
Education and posts held:
1974 ­ 1977 BSc Applied Maths QUB 1977 ­ 1980 PhD ``Interpretation of solar ultraviolet & X-ray emission lines'' QUB 1980 ­ 1982 Post doctoral fellow QUB 1982 ­ 1984 Research Astronomer Armagh Observatory 1984 ­ 1985 on leave at Mullard Space Science Laboratory 1985 ­ present Research Astronomer Armagh Observatory

Research:

My research has been funded by a number UK and European agencies, e.g. SERC, PPARC, NATO, British Council, Royal Society, UK Science and Technology Facilities Council (STFC) and the EEC for (i) telescope time, (ii) T&S and (iii) post-docs. Presently, I have funding for three post-docs (two STFC and one Leverhulme). In addition, I am Co-I on a STFC Visitors grant and a STFC Observers grant. I have experience in (i) calculation of atomic physics data and its application to solar and stellar data, (ii) solar physics (both observations and modelling), (iii) stellar physics (both observations and modelling) and (iv) radio and optical observations and modelling of ultracool dwarfs. Over the last decade the uninterrupted, high resolution coverage of the Sun both from the excellent range of telescopes aboard many spacecraft and from ground-based instruments has led to a wealth of observations of small-scale dynamic events observed from the transition region and corona. Recent projects include; jets and high-velocity flows as revealed in high-cadence spectrometer and imager coobservations, (ii) plasma condensation in coronal loops, (iii) evidence for wave harmonics in cool loops, (iv) A statistical study of wave propagation in coronal holes, (v) analysis of power spectra of Doppler shift time series as a diagnostic tool for quiescent coronal loop, (vi) a study of a macro-spicule and a transition region explosive event in a solar coronal hole & transient ionization studies. In the stellar field, our observation of pulsed coherent emission from these ultracool dwarfs is in effect, the discovery of a completely new category of radio emitting object and has immense implications for our understanding of both stellar magnetic activity and the dynamo mechanism generating magnetic fields in fully convective stars and brown dwarfs. It is a significant departure from the incoherent gyrosynchrotron emission model generally applied to cool stars and, in fact, has more in common with the coherent radio emission observed from all of the magnetized planets in our solar system.

Committee Membership:
I have served on several telescope and grant awarding bodies over the past twenty years, including chairing the Astronomical Science Group of Ireland and different UK STFC grant and telescope time allocation panels.

Honours:
Elected a member of the Royal Irish Academy

Publications:
Over 310 refereed papers plus another 190 conference papers


Current responsibilities:
Supervision of PhD. Students. Supervision of under-graduate summer students projects. Principle investigator of an STFC research grants relating to the analysis of data from SoHO, Hinode, Trace and the calculation of stomic physics Principle investigator of a Leverhulme research grants relating the modelling of solar observations Line manager for the Observatory's computer manager and system engineer. In addition, I am the astronomer in charge of the Observatory's library budget, plus the Observatory's coordinator for PhD student training. Over the past 20 years, three PhD students. I Manchester, University the Indian Institute of A I have supervised 40 PhD students and/or PDRAs. At present, I am supervising have been the external examiner for PhDs students at Cambridge, Glasgow, College London, St. Andrews, University of Strathclyde, University of Oslo and strophysics.

Recent Publications:
"Diagnosing transient ionization in dynamic events", Doyle, J.G., Giunta, A., Madjarska, M.S., Summers,H., O'Mullane, M. & Singh, A., 2013 A&A 557 L9 "The Diagnostic Potential of Transition Region Lines Undergoing Transient Ionization in Dynamic Events", Doyle, J.G., Giunta, A., Singh, A., Madjarska, M.S., Summers, H., Kellett, B.J. & O'Mullane, M., 2012 SoPh 280, 111 ``Phase connecting multi-epoch radio data for the ultracool dwarf TVLM 513-46546'', Doyle, J.G., Antonova, A., Marsh, M.S., Hallinan, G., Yu, S. & Golden,A., 2010 A&A 524, 15 ``Coronal hole boundaries evolution at small scales. II. XRT View. Can small-scale outflows aat CHBs be a source of the slow solar wind'', Subramanian, S., Madjarska, M.S. & Doyle, J.G., 2010 A&A 516, 50 ``Deriving the coronal hole electron temperature: electron density dependent ionization / recombination considerations'', Doyle, J.G., Chapman, S., Bryans,P., Perez-Suarez, D., Singh, A., Summers, H., Savin, D.W., 2010 RAA 10, 91 ``Chromospheric magnetic reconnection caused by photospheric flux emergence: implications for jet-like events formation'', Ding, J.Y., Madjarska, M.S., Doyle, J.G. & Lu, Q.M., 2010 A&A 510 111 ``Jets in Polar Coronal Holes'', Scullion, E., Popescu, M.D., Banerjee, D., Doyle, J.G. & Erdelyi, R., 2009 ApJ 704, 1385 ``Signatures of AlfvИn waves in the polar coronal holes as seen by EIS/Hinode'', Banerjee, D., Perez-Suarez, D. & Doyle, J.G., 2009 A&A 501 L 15