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Publications Influence

Finer resolution observation and monitoring of global land cover: first mapping results with Landsat TM and ETM+ data

We have produced the first 30 m resolution global land-cover maps using Landsat Thematic Mapper (TM) and Enhanced Thematic Mapper Plus (ETM+) data. We have classified over 6600 scenes of Landsat TM… Expand

836 50

The Apparently Decaying Orbit of WASP-12

We present new transit and occultation times for the hot Jupiter WASP-12b. The data are compatible with a constant period derivative: $\dot{P}=-29 \pm 3$ ms yr$^{-1}$ and $P/\dot{P}= 3.2$ Myr.… Expand

48 14- PDF

On initial segment complexity and degrees of randomness

One approach to understanding the fine structure of initial segment complexity was introduced by Downey, Hirschfeldt and LaForte. They define X ≤K Y to mean that (Vn) K(X | n) < K(Y | n) + 0(1). The… Expand

85 10- PDF

The K2-ESPRINT Project III: A Close-in Super-Earth around a Metal-rich Mid-M Dwarf

We validate a $R_p=2.32\pm 0.24R_\oplus$ planet on a close-in orbit ($P=2.260455\pm 0.000041$ days) around K2-28 (EPIC 206318379), a metal-rich M4-type dwarf in the Campaign 3 field of the K2… Expand

33 4- PDF

Numerical simulation of the bubbling fluidized bed coal gasification by the kinetic theory of granular flow (KTGF)

- L. Yu, J. Lu, Xiangping Zhang, S. Zhang
- Chemistry
- 1 March 2007

A new numerical model based on the two-fluid model (TFM) including the kinetic theory of granular flow (KTGF) and complicated reactions has been developed to simulate coal gasification in a bubbling… Expand

129 3

Semiclassical mechanics of the Wigner 6j-symbol

- V. Aquilanti, Hal M. Haggard, Austin Hedeman, N. Jeevanjee, R. Littlejohn, L. Yu
- Mathematics, Physics
- 14 September 2010

The semiclassical mechanics of the Wigner 6j-symbol is examined from the standpoint of WKB theory for multidimensional, integrable systems to explore the geometrical issues surrounding the… Expand

60 2- PDF

Uniform semiclassical approximation for the Wigner 6j-symbol in terms of rotation matrices.

- R. Littlejohn, L. Yu
- Chemistry, Physics
- The journal of physical chemistry. A
- 26 May 2009

A new uniform asymptotic approximation for the Wigner 6j-symbol is given in terms of Wigner rotation matrices (d-matrices). The approximation is uniform in the sense that it applies for all values of… Expand

26 2- PDF

Weighing Galaxy Clusters with Gas. II. On the Origin of Hydrostatic Mass Bias in ΛCDM Galaxy Clusters

The use of galaxy clusters as cosmological probes hinges on our ability to measure their masses accurately and with high precision. Hydrostatic mass is one of the most common methods for estimating… Expand

82 2- PDF

Semiclassical analysis of Wigner 3j-symbol

- V. Aquilanti, Hal M. Haggard, R. Littlejohn, L. Yu
- Mathematics, Physics
- 13 March 2007

We analyse the asymptotics of the Wigner 3j -symbol as a matrix element connecting eigenfunctions of a pair of integrable systems, obtained by lifting the problem of the addition of angular momenta… Expand

41 1- PDF

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