1. donoughregan
research scientist
education
2007–2010 PhD Cosmology DAMTP, University of Cambridge
Non-Gaussianity from Inflationary models and Cosmic Strings
Developed methods to test for deviations of topological defects and generic
models of inflation from the standard model. Applied these techniques to cos-
mic microwave background (CMB) data, producing the first measures of several
models, thereby narrowing the scope for deviation from the standard paradigm.
2005–2006 MSc Computational Science University College Dublin
Graduated with first class honours. Courses in Numerical Algorithms, Parallel
Programming, Scientic Visualisation, Financial Maths, Case Studies in Compu-
tational Science & Mathematical Methods.
Dissertation: Accretion Disks and Jet Propulsion (Advisor: Peter Duffy)
2004–2005 MSc Mathematical Science University College Dublin
Graduated with first class honours. Gold medal winner.
Dissertation: Conformal Field Theory (Advisor: Werner Nahm)
2000–2004 BSc Mathematical Science University College Dublin
Graduated with first class honours. Gold medal winner.
Courses in Mathematics, Mathematical Physics, Statistics.
experience
09/’12–Now Sussex University Falmer Brighton, UK
Postdoctoral Research Associate Supervisor: David Seery
Employed to 5 year position under ERC funded project titled ‘Precision Tests of
the Inflationary Scenario’.
Detailed achievements:
• Detailed analysis of the CMB power asymmetry.
• First measure in Planck CMB data of cubic order correction to primordial
perturbations.
• Most general constraints of higher-order statistics from inflation.
• Modelling of matter/radiation perturbations from topological defects.
• Sole supervision of MSc student project, leading to publication.
• Lectured 4 weeks of MSc cosmology course in 2013-15 academic years.
• Refereeing of several papers for Physical Review D, JCAP and MNRAS.
01/’11–09/’12Sussex University Falmer Brighton, UK
Postdoctoral Research Associate Supervisor: Andrew Liddle
Employed as STFC postdoctoral researcher with the general remit to contribute
to the research output of the department in the area of early universe cosmology.
Detailed achievements:
• Development of efficient method to measure higher order statistics from
N-body simulations greatly improving computational speed and accuracy.
• Introduced generalised estimation technique for CMB studies.
• Simulation of effect of lensing of structure on CMB skewness measures.
• Organisation of formal seminar series for 5 terms, with approximately 40
seminars organised.
• Organisation of weekly journal club for 3 terms.
• Prepared and delivered a two-hour lecture to masters and PhD students
on how to perform N-body simulations.
• Marking and supervision of MSc cosmology course assignments.
contact
50 Rutland Gardens
Hove, BN3 5PB
UK
+44 (78) 25838426
d.regan@sussex.ac.uk
languages
english mother tongue
french basic
programming
C++, C, R, Fortran,
HPC (MPI, OpenMP)
LATEX, Mathematica,
Matlab

2. teaching and other professional activities
2011-present Mentoring & Supervision Cambridge & Sussex Universities
• Gemma Anderson (PI: Dr David Seery) 2 papers: 2013-15
• Mateja Gosenca (MSc student) 1 paper: 2012-13
• Ruth Pearson (PI: Prof. Antony Lewis) 1 paper: 2011-12
• Marcel Schmittfull (PI: Prof. Paul Shellard) 2 papers: 2011-12
2010-present Refereeing PRD, MNRAS, JCAP
Have refereed several papers for Physical Review D, Monthly Notices of the
Royal Astronomical Society and the Journal of Cosmology and Astroparticle
Physics.
2013-2015 Lecturing Sussex University
Have lectured one of three sections of the MSc Cosmology course at Sussex
University in each of the 2013,2014 and 2015 academic years.
2013-2015 Undergraduate Supervision Sussex University
Marking and supervision of undergraduate students in Electrodynamics (2013)
and Condensed Matter Theory (2013,2014) at Sussex University.
2012 STFC Introductory Summer School Sussex University
Ran a Q&A session with starting PhD students on my experience as a PhD
student and subsequent work as a postdoctoral researcher.
2012 Astronomy Reseach Skills Lecture Sussex University
Prepared and delivered a two-hour lecture to masters and PhD students on how
to perform N-body simulations.
2011 Exam Paper Writing Ireland
Due to the introduction of a new maths syllabus for the mathematics Irish Leav-
ing Certificate examination I was contracted by educate.ie to produce 4 sample
papers for both honours and ordinary levels.
2007-2010 Undergraduate Supervision Cambridge University
Marking and supervision of undergraduate students in General Relativity (2007-
2010) at Cambridge University.
2004-2006 Undergraduate Supervision University College Dublin
Marking and supervision of undergraduate students in maths to students of
actuarial science, agricultural science, commerce and mathematical studies at
UCD.
data analytics & other relevant experience
2016 Data Science Specialisation Coursera (Johns Hopkins University)
Learned aspects of data analytics using R via online MOOC.
2011-present Analysis techniques used in postdoctoral research Sussex University
Higher order statistics, Monte Carlo methods (for integration methods, and ro-
bustness tests), simulations, Bayesian analysis (for model comparison), princi-
pal component analysis, parallel programming (OpenMP, MPI), mathematical
modelling, version control using GitHub.
interests
professional: data analysis, visualisation, simulations, higher order statistics personal: piano,
hurling, football, cycling, travelling, reading

3. awards
2007-2010 Isaac Newton Studentship University of Cambridge
Studentship covering maintenance costs during my PhD.
2007-2009 Cambridge European Trust University of Cambridge
2007-2010 EPSRC PhD Fees University of Cambridge
2006 Marie Curie Paris
Grant to attend trimester at the Institut de Henri Poincaré in Paris on Gravita-
tional Waves.
2003 Summer Studentship CERN, Geneva
13 week internship at CERN consisting of lectures in particle physics, and as-
sisting a PhD student in the analysis of magnet strands.
2000-2003 Maths awards UCD & Royal Irish Academy
1st, 2nd, 3rd year prizes at UCD, as well as the Hamilton Prize from the RIA.
2000-2005 Math Physics awards UCD
1st, 2nd, 3rd, 4th and Masters year prizes at UCD.
2000-2002 Other undergraduate awards UCD
Entrance Scholarship, Experimental Physics (1st year) & Statistics (2nd year)
awards.
communication skills
2009-present Written Presentations Research Journal Publications
Have written 18 papers achieving a h-index of 10 to date. Have collaborated
with 8 different collaborators on at least 2 papers, developing and implementing
analytical and statistical techniques across a range of topics. These papers are
published at leading international journals.
2009-present Oral Presentations Conference & Seminar Talks
Have given approximately 20 presentations of my research at international con-
ferences and invited seminars, amongst which are the following:
• (Feb 2016) Sao Carlos, Brazil. Conference talk. Including recombination effects in the CMB
bispectrum of cosmic strings.
• (Jan 2016) Nottingham. Seminar. Hemispherical power asymmetry from a scale dependent
bispectrum.
• (Nov 2015) Queen Mary, London. Seminar. Hemispherical power asymmetry from a scale
dependent bispectrum.
• (April 2015) UCC, Ireland. Seminar. Non-Gaussianity as a window to fundamental cosmol-
ogy. Seminar Series.
• (Feb 2014) Berkeley and Stanford. Seminar. Constraining models of single field inflation.
• (Feb 2014) Phoenix, Arizona. Conference talk. Matter Power Spectrum and Bispectrum of
Cosmic String Wakes.
• (April 2013) Helsinki, Finland. Seminar. Non-Gaussianity after Planck... the search goes on
(for now!).
• (Oct 2012) Nottingham. Seminar Large Scale Structure as a Probe of Primordial Non-
Gaussianity.
• (Aug 2012) Benasque, Spain. Workshop talk. (Primordial) non-Gaussianity and N-body
Simulations.
• (March 2012) Imperial College London. Seminar Testing Non-Gaussianity with N-body Sim-
ulations.
• (July 2011) DAMTP, Cambridge. Conference (PASCOS). CMB trispectrum constraints.
• (May 2011) Queen Mary, London. Seminar. Measuring Primordial non-Gaussianity... step-
by-step.
• (Sept 2010) Centro de Astrofisica, Porto. Seminar. Measuring non-Gaussianity in the CMB
and other probes.
• (Jan 2010) DAMTP, Cambridge. Seminar. Cosmic Strings in the CMB.
• (Oct 2009) DAMTP, Cambridge. Research groups talk. Cosmology and Cosmic Strings.

4. publications in peer-reviewed journals
Implications of the cosmic microwave background power asymmetry for the early universe
Christian T. Byrnes, Donough Regan, David Seery, Ewan R. M. Tarrant
Phys. Rev. D93.12 (2016) p. 123003. 2016
The hemispherical asymmetry from a scale-dependent inflationary bispectrum
Christian T. Byrnes, Donough Regan, David Seery, Ewan R. M. Tarrant
JCAP 1606.06 (2016) p. 025. 2016
Influence of large local and non-local bispectra on primordial black hole abundance
Sam Young, Donough Regan, Christian T. Byrnes
JCAP 1602.02 (2016) p. 029. 2016
Planck Trispectrum Constraints on Primordial Non-Gaussianity at Cubic Order
Chang Feng, Asantha Cooray, Joseph Smidt, Jon O’Bryan, Brian Keating, Donough Regan
Phys. Rev. D92.4 (2015) p. 043509. 2015
Constraining Galileon Inflation
Donough Regan, Gemma J. Anderson, Matthew Hull, David Seery
JCAP 1502.02 (2015) p. 015. 2015
Constraining the WMAP9 bispectrum and trispectrum with needlets
Donough Regan, Mateja Gosenca, David Seery
JCAP 1501.01 (2015) p. 013. 2015
The bispectrum of cosmic string temperature fluctuations including recombination effects
Donough Regan, Mark Hindmarsh
JCAP 1510.10 (2015) p. 030. 2015
The bispectrum of matter perturbations from cosmic strings
Donough Regan, Mark Hindmarsh
JCAP 1503.03 (2015) p. 008. 2015
Principal Components of CMB non-Gaussianity
Donough Regan, Dipak Munshi
Mon. Not. Roy. Astron. Soc. 448.3 (2015) pp. 2232–2244. 2015
Optimal bispectrum constraints on single-field models of inflation
Gemma J. Anderson, Donough Regan, David Seery
JCAP 1407 (2014) p. 017. 2014
General CMB bispectrum analysis using wavelets and separable modes
Donough Regan, Pia Mukherjee, David Seery
Phys. Rev. D88.4 (2013) p. 043512. 2013
Fast Estimation of Gravitational and Primordial Bispectra in Large Scale Structures
M. M. Schmittfull, D. M. Regan, E. P. S. Shellard
Phys. Rev. D88.6 (2013) p. 063512. 2013
Rapid Separable Analysis of Higher Order Correlators in Large Scale Structure
J. R. Fergusson, D. M. Regan, E. P. S. Shellard
Phys. Rev. D86 (2012) p. 063511. 2012
CMB lensing and primordial squeezed non-Gaussianity
Ruth Pearson, Antony Lewis, Donough Regan
JCAP 1203 (2012) p. 011. 2012
Universal Non-Gaussian Initial Conditions for N-body Simulations
D. M. Regan, M. M. Schmittfull, E. P. S. Shellard, J. R. Fergusson
Phys. Rev. D86 (2012) p. 123524. 2012
Optimal Trispectrum Estimators and WMAP Constraints
J. R. Fergusson, D. M. Regan, E. P. S. Shellard
(2010). 2010
Cosmic String Power Spectrum, Bispectrum and Trispectrum
D. M. Regan, E. P. S. Shellard
Phys. Rev. D82 (2010) p. 063527. 2010
General CMB and Primordial Trispectrum Estimation
D. M. Regan, E. P. S. Shellard, J. R. Fergusson
Phys. Rev. D82 (2010) p. 023520. 2010