Fields of Research

Galactic astronomy
Stellar astronomy and planetary systems
High energy astrophysics and galactic cosmic rays
Planetary science (excl. solar system and planetary geology)
Astronomical instrumentation
Accelerators

Research Objectives

Expanding knowledge in the physical sciences
Expanding knowledge in the mathematical sciences
Scientific instruments
Climate variability (excl. social impacts)

Career Best Publications

A Jovian-mass planet in microlensing event OGLE-2005-BLG-071; Astrophysical Journal
Detection of rotation in a binary microlens: planet photometry of MACHO 97-BLG-41; The Astrophysical Journal
Limb darkening of a K giant in the galactic bulge: PLANET photometry of MACHO 97-BLG-28; The Astrophysical Journal
Observations and modelling of the hard X-ray emission from GX 1 + 4; Monthly Notices of the Royal Astronomical Society
PLANET observations of microlensing event OGLE-1999-BUL-23: limb-darkening measurement of the source star; The Astrophysical Journal
The optical counterpart of SAX J1808.4-3658, the transient bursting millisecond X-ray pulsar; Monthly Notices of the Royal Astronomical Society
The optical counterpart of XTE J0929-314: the third transient millisecond X-ray pulsar; Monthly Notices of the Royal Astronomical Society
The relative lens-source proper motion in MACHO 98-SMC-1; The Astrophysical Journal

Research Publications

A brown dwarf orbiting an M-dwarf: MOA 2009-BLG-411L; Astronomy and Astrophysics
A Cold Neptune-Mass Planet OGLE-2007-BLG-368Lb: Cold Neptunes are Common; Astrophysical Journal
A complete set of solutions for caustic crossing binary microlensing events; The Astrophysical Journal
A frozen super-Earth orbiting a star at the bottom of the main sequence; Astronomy and Astrophysics
A giant planet beyond the snow line in microlensing event OGLE-2011-BLG-0251; Astronomy and Astrophysics
A Jovian-mass planet in microlensing event OGLE-2005-BLG-071; Astrophysical Journal
A new type of ambiguity in the planet and binary interpretations of central perturbations of high-magnification gravitational microlensing events; The Astrophysical Journal
A possible binary system of a stellar remnant in the high-magnification gravitational microlensing event OGLE-2007-BLG-514; Astrophysical Journal
A Search from Rings, Moons, or Debris in the Pluto System during the 2006 July 12 Occultation; 38th Meeting of the AAS Division for Planetary Sciences
A Serendipitous RXTE Observation of the Strong Field X-ray Pulsar GX1+4; American Astronomical Society HEAD Meeting No. 4
A sub-Saturn mass planet, MOA-2009-BLG-319LB; The Astrophysical Journal: An International Review of Astronomy and Astronomical Physics
A systematic fitting scheme for caustic-crossing microlensing events; Monthly Notices of the Royal Astronomical Society
A transient I-band excess in the optical spectrum of the accreting millisecond pulsar SAX J1808.4-3658; Monthly Notices of the Royal Astronomical Society
Accretion column eclipses in the X-ray pulsars GX 1+4 and RX J0812.4-3114; Monthly Notices of the Royal Astronomical Society
An 'outside-in' outburst of Aql X-1; Monthly Notices of the Royal Astronomical Society
Angular Momentum Transfer in the Binary X-ray Pulsar GX 1+4; Publications of the Astronomical Society of Australia
ASCA and Ginga Observations of GX 1+4; The Astrophysical Journal
Binary microlensing event OGLE-2009-BLG-020 gives verifiable mass, distance, and orbit predictions; The Astrophysical Journal: An International Review of Astronomy and Astronomical Physics
Changes in Pluto's Atmosphere: 1988-2006; The Astronomical Journal
Characterizing lenses and lensed stars of high-magnification single-lens gravitational microlensing events with lenses passing over source starts; The Astrophysical Journal
Characterizing low-mass binaries from observation of long-timescale caustic-crossing gravitational microlensing events; The Astrophysical Journal
Combined analysis of the binary lens caustic-crossing event MACHO 98-SMC-1; The Astrophysical Journal
Constraints on Charon's orbital elements from the double stellar occultation of 2008 June 22; Astronomical Journal
Decrease in the orbital period of dwarf nova OY Carinae; Monthly Notices of the Royal Astronomical Society
Detection of rotation in a binary microlens: planet photometry of MACHO 97-BLG-41; The Astrophysical Journal
Difference imaging photometry of blended gravitational microlensing events with a numerical kernel; Monthly Notices of the Royal Astronomical Society
Discovery and mass measurements of a cold, 10 earth mass planet and its host star; The Astrophysical Journal: An International Review of Astronomy and Astronomical Physics
Discovery of a cool planet of 5.5 Earth masses through gravitational microlensing; Nature
Discovery of a Jupiter/Saturn Analog with Gravitational Microlensing; Science
Discovery of the Optical Counterpart and Early Optical Observations of GRB 990712; The Astrophysical Journal
Energy Spectrum and Pulse Profiles of the Binary Pulsar GX 1+4; Advances in Space Research
Extreme Magnification Microlensing Event OGLE-2008-BLG-279: Strong Limits on Planetary Companions to the Lens Stars; The Astrophysical Journal: An International Review of Astronomy and Astronomical Physics
Frequency of Solar-like Systems and of Ice and Gas and Giants Beyond the Snow Line from High-magnification Microlensing Events in 2005-2008; Astrophysical Journal
Full characterization of binary-lens event OGLE-2002-BLG-069 from PLANET observations; Astronomy & Astrophysics
Gravitational binary-lens events with prominent effects of lens orbital motion; Astrophysical Journal
Hα monitoring of the X-ray pulsar GX 1+4 during an X-ray flare; Monthly Notices of the Royal Astronomical Society
Hα equivalent width variations across the face of a microlensed K giant in the galactic bulge; The Astrophysical Journal
H-alpha Photometry of an X-ray Binary; 22nd General Assembly of the International Astronomical Union
High-Precision Limb-Darkening Measurement of a K3 Giant Using Microlensing; The Astrophysical Journal
Interpretation of a short-term anomaly in the gravitational microlensing event MOA-2012-BLG-486; Astrophysical Journal
Interpretation of Strong Short-term Central Perturbations in the Light Curves of Moderate-Magnification Microlensing Events; The Astrophysical Journal: An International Review of Astronomy and Astronomical Physics
Limb darkening of a K giant in the galactic bulge: PLANET photometry of MACHO 97-BLG-28; The Astrophysical Journal
Limb-darkening measurements for a cool red giant in microlensing event OGLE 2004-BLG-482; Astronomy and Astrophysics
Limits on additional planetary companions to OGLE 2005-BLG-390L; Astronomy and Astrophysics
Limits on stellar and planetary companions in microlensing event OGLE-1998-BUL-14; The Astrophysical Journal
Limits on the abundance of galactic planets from 5 years of PLANET observations; The Astrophysical Journal
Lower atmosphere and pressure evolution on Pluto from ground-based stellar occultations, 1988-2016; Astronomy and Astrophysics
Luminosity dependent changes of pulse profiles in the X-ray binary GX 1+4; Publications Astronomical Society of Australia
Mass measurement of a single unseen star and planetary detection efficiency for OGLE 2007-BLG-050; Astronomy and Astrophysics
Masses and orbital constraints for the OGLE-2006-BLG-109Lb,c Jupiter/Saturn analog Planetary System; Astrophysical Journal
Microlensing binaries discovered through high-magnification channel; Astrophysical Journal
Microlensing binaries with candidate brown dwarf companions; The Astrophysical Journal
Microlensing discovery of a population of very tight, very low mass binary brown dwarfs; The Astrophysical Journal
MOA 2010-BLG-477Lb: Constraining the mass of a microlensing planet from microlensing parallax, orbital motion, and detection of blended light; The Astrophysical Journal
MOA-2007-BLG-197: exploring the brown dwarf desert; Astronomy and Astrophysics
MOA-2009-BLG-387Lb: a massive planet orbiting an M dwarf; Astronomy and Astrophysics: A European Journal
Moa-2010-BLG-073L: An M-dwarf with a substellar companion at the planet/brown dwarf boundary; Astrophysical Journal
MOA-2010-BLG-311: A planetary candidate below the threshold of reliable detection; Astrophysical Journal
MOA-2010-BLG-328LB: A sub-Neptune orbiting very late M dwarf?; Astrophysical Journal
MOA-2010-BLG-523: 'FAILED PLANET' = RS CVn STAR; Astrophysical Journal
Observations and modelling of the hard X-ray emission from GX 1 + 4; Monthly Notices of the Royal Astronomical Society
OGLE 2004-BLG-254: a K3III Galactic bulge giant spatially resolved by a single microlens; Astronomy & Astrophysics
OGLE 2008-BLG-290: an accurate measurement of the limb darkening of a galactic bulge K Giant spatially resolved by microlensing; Astronomy and Astrophysics
OGLE-2003-BLG-238: Microlensing Mass Estimate of an Isolated Star; The Astrophysical Journal
OGLE-2005-BLG-018: Characterization of full physical and orbital parameters of a gravitational binary lens; The Astrophysical Journal: An International Review of Astronomy and Astronomical Physics
OGLE-2005-BLG-071Lb, the most massive M dwarf planetary companion?; The Astrophysical Journal
OGLE-2005-BLG-153: Microlensing discovery and characterization of a very low mass binary; Astrophysical Journal
OGLE-2008-BLG-510: First automated real-time detection of a weak microlensing anomaly - brown dwarf or stellar binary?; Monthly Notices of the Royal Astronomical Society
OGLE-2009-BLG-092/MOA-2009-BLG-137: A Dramatic repeating event with the second perturbation predicted by real-time analysis; Astrophysical Journal
OGLE-2011-BLG-0265Lb: a Jovian microlensing planet orbiting an M Dwarf; The Astrophysical Journal
One or more bound planets per Milky Way star from microlensing observations; Nature
PLANET observations of microlensing event OGLE-1999-BUL-23: limb-darkening measurement of the source star; The Astrophysical Journal
Pluto's atmospheric structure from the July 2007 stellar occultation; Icarus
Pluto's Atmospheric Structure: Results From the 2006 June 12 Stellar Occulation; 38th Meeting of the AAS Division for Planetary Sciences
Polarimetry Photometry and Spectroscopy of the Intermediate Polar V1223-SAGITTARIUS; Monthly Notices of the Royal Astronomical Society
Potential Direct Single-Star Mass Measurement; The Astrophysical Journal
Probing the atmosphere of the bulge G5III star OGLE-2002-BUL-069 by analysis of microlensed Há line; Astronomy & Astrophysics
Pulse Profiles, Accretion Column Dips, and a Flare in GX 1+4 During a Faint State; The Astrophysical Journal
Reanalyses of anomalous gravitational microlensing events in the OGLE-III early warning system database with combined data; The Astrophysical Journal
Red noise versus planetary interpretations in the microlensing event OGLE-2013-BLG-446; Astrophysical Journal
Resumed spin-up in GX 1+4; Astronomy and Astrophysics
SaxJ1818.4-3658=XTEJ1808-369; IAUC
Spectral variation in the X-ray pulsar GX 1+4 during a low-flux episode; Monthly Notices of the Royal Astronomical Society
Spectrophotometry of the eclipsing dwarf nova V2051 Ophiuchi; Astronomy and Astrophysics
Sub-Saturn planet MOA-2008-BLG-310Lb: Likely to be in the galactic bulge; Astrophysical Journal
Supernova 1995W in NGC 7650; International Astronomical Union Circular
Supernova 1995W in NGC 7650; Central Bureau for Astronomical Telegrams International Astronomical Union
The black hole transient Nova Scorpii 1994 (equals GRO J1655-40): Orbital ephemeris and optical light curve; Monthly Notices of the Royal Astronomical Society
The first circumbinary planet found by microlensing: OGLE-2007-BLG-349L(AB)c; Astronomical Journal
The optical counterpart of SAX J1808.4-3658, the transient bursting millisecond X-ray pulsar; Monthly Notices of the Royal Astronomical Society
The optical counterpart of XTE J0929-314: the third transient millisecond X-ray pulsar; Monthly Notices of the Royal Astronomical Society
The PLANET Collaboration: Current Status and Future Prospects; Planets Beyond the Solar System and the Next Generation of Space Missions
The PLANET Collaboration: Current Status and Future Prospects; Planets Beyond the Solar System and the Next Generation of Space Missions
The PLANET Collaboration: Probing Lensing Anomalies; Variable Stars and the Astrophysical Returns of the Microlensing Surveys
The PLANET Collaboration: Probing Lensing Anomalies; Variable Stars and the Astrophysical Returns of the Microlensing Surveys
The PLANET microlensing follow-up network: results and prospects for the detection of extra-solar planets; Planetary and Space Science
The relative lens-source proper motion in MACHO 98-SMC-1; The Astrophysical Journal
The Size of Pluto's Atmosphere As Revealed by the 2006 June 12 Occultation; 38th Meeting of the AAS Division for Planetary Sciences
The spectral energy distribution of PKS 2004-447: a compact steep-spectrum source and possible radio-loud narrow-line Seyfert 1 galaxy; Monthly Notices of the Royal Astronomical Society
V2116 Ophiuchi; International Astronomical Union Circular

Research Projects

French Scientific Ballooning Campaign; Australian Space Office (ASO)
Hidden Earths and Distant Suns: A New Optical Astronomy Observatory in Tasmania; Australian Research Council (ARC)
High Energy X-Ray Astronomy; Australian Research Council (ARC)
Search for extra-solar planets; Australian Research Council (ARC)
Searching for Planetary Systems About Other Stars; University of Tasmania (UTAS)
X-Ray Astronomy Observations Using Balloons; Australian Research Council (ARC)
Using Gravitational Microlensing to Detect Exoplanets

Research Candidate Supervision

A spectroscopic and photometric study of gravitational microlensing events
Gravititional Microlensing Observations.
Hard x-ray observations of Soc x-1 and GX 1+4
RR Lyrae Stars and the Blazhko Effect
Spectrum and pulse profile formation in x-ray pulsars