Author

Tim Pickering

results may include different authors with the same name

3 papers

Predicting the spectrum of UGC 2885, Rubin's Galaxy with machine learning

Wu & Peek (2020) predict SDSS-quality spectra based on Pan-STARRS broad-band \textit{grizy} images using machine learning (ML). In this letter, we test their prediction for a unique object, UGC 2885 ("Rubin's galaxy"), the largest and most…

Astrophysics of Galaxies · Physics 2021-05-10 Benne W. Holwerda , John F. Wu , William C. Keel , Jason Young , Ren Mullins , Joannah Hinz , K. E. Saavik Ford , Pauline Barmby , Rupali Chandar , Jeremy Bailin , Josh Peek , Tim Pickering , Torsten Böker

Evanescent Gain in "Trapped Rainbow" Negative Refractive Index Heterostructures

We theoretically and numerically analyze a five-layer "trapped rainbow" waveguide made of a passive negative refractive index (NRI) core layer and gain strips in the cladding. Analytic transfer-matrix calculations and full-wave time-domain…

Materials Science · Physics 2015-05-20 Edmund I. Kirby , Joachim M. Hamm , Tim Pickering , Kosmas L. Tsakmakidis , Ortwin Hess

Optical turbulence characterization at the SAAO Sutherland site

We present results from the first year of a campaign to characterize and monitor the optical turbulence profile at the SAAO Sutherland observing station in South Africa. A MASS-DIMM (MultiAperture Scintillation Sensor - Differential Image…

Instrumentation and Methods for Astrophysics · Physics 2013-10-29 Laure Catala , Steven M. Crawford , David A. H. Buckley , Tim Pickering , Richard Wilson , Tim Butterley , Harry Shepherd , Fred Marang , Patrick Matshaya , Chantal Fourie