78 citations · 139 across the 7 of their papers we have counts for
7 papers
-Method for Multiple Scattering in Participating Media
David Koerner, Jamie Portsmouth, Wenzel Jakob
Rendering highly scattering participating media using brute force path tracing is a challenge. The diffusion approximation reduces the problem to solving a simple linear partial di…
Efficient barycentric point sampling on meshes
Jamie Portsmouth
We present an easy-to-implement and efficient analytical inversion algorithm for the unbiased random sampling of a set of points on a triangle mesh whose surface density is specifi…
The host dark matter halos of [OII] emitters at 0.5< z< 1.5
V. Gonzalez-Perez, J. Comparat, P. Norberg +7
Emission line galaxies (ELGs) are used in several ongoing and upcoming surveys (SDSS-IV/eBOSS, DESI) as tracers of the dark matter distribution. Using a new galaxy formation model,…
Flux-Limited Diffusion for Multiple Scattering in Participating Media
David Koerner, Jamie Portsmouth, Filip Sadlo +2
For the rendering of multiple scattering effects in participating media, methods based on the diffusion approximation are an extremely efficient alternative to Monte Carlo path tra…
Kinetic theory of polarization in the Sunyaev-Zeldovich effect
Jamie Portsmouth, Edmund Bertschinger
We apply the coherency tensor formalism to the calculation of the spectral distortions imprinted in the intensity and polarization of the cosmic microwave background radiation due…
A tensor formalism for transfer and Compton scattering of polarized light
Jamie Portsmouth, Edmund Bertschinger
A novel covariant formalism for the treatment of the transfer and Compton scattering of partially polarized light is presented. This was initially developed to aid in the computati…