Publications by James O'Donnell


A transient search using combined human and machine classifications

Monthly Notices of the Royal Astronomical Society Oxford University Press 472 (2017) 1315-1323

DE Wright, CJ Lintott, SJ Smartt, KW Smith, L Fortson, L Trouille, CR Allen, M Beck, MC Bouslog, A Boyer, KC Chambers, H Flewelling, W Granger, EA Magnier, A McMaster, GRM Miller, JE O'Donnell, B Simmons, HR Spiers, JL Tonry, M Veldthuis, RJ Wainscoat, C Waters, M Willman, Z Wolfenbarger

Large modern surveys require efficient review of data in order to find transient sources such as supernovae, and to distinguish such sources from artefacts and noise. Much effort has been put into the development of automatic algorithms, but surveys still rely on human review of targets. This paper presents an integrated system for the identification of supernovae in data from Pan-STARRS1, combining classifications from volunteers participating in a citizen science project with those from a convolutional neural network. The unique aspect of this work is the deployment, in combination, of both human and machine classifications for near real-time discovery in an astronomical project. We show that the combination of the two methods outperforms either one used individually. This result has important implications for the future development of transient searches, especially in the era of LSST and other large-throughput surveys.


The Solar Stormwatch CME catalogue: Results from the first space weather citizen science project

SPACE WEATHER-THE INTERNATIONAL JOURNAL OF RESEARCH AND APPLICATIONS 12 (2014) 657-674

L Barnard, C Scott, M Owens, M Lockwood, K Tucker-Hood, S Thomas, S Crothers, JA Davies, R Harrison, C Lintott, R Simpson, J O'Donnell, AM Smith, N Waterson, S Bamford, F Romeo, M Kukula, B Owens, N Savani, J Wilkinson, E Baeten, L Poeffel, B Harder


Dust grain size distributions and the abundance of refractory elements in the diffuse interstellar medium

ASTROPHYSICAL JOURNAL 479 (1997) 806-817

JE ODonnell, JS Mathis


THE EFFECT OF GRAIN MANTLES AND GRAIN SHAPE UPON THE 9.7-MICRON AND 18-MICRON SILICATE FEATURES

ASTROPHYSICAL JOURNAL 437 (1994) 262-269

JE ODONNELL


R(V)-DEPENDENT OPTICAL AND NEAR-ULTRAVIOLET EXTINCTION

ASTROPHYSICAL JOURNAL 422 (1994) 158-163

JE ODONNELL