4 papers
Surface Interactions in Photon Monte Carlo Simulations
J. R. Peterson, D. Valls-Gabaud, A. Dutta +2
We implement a comprehensive simulation of photon surface interactions using a Monte Carlo approach. This is effective in simulating the interaction of light with telescope mirrors…
Weak lensing analysis of A115, A2219 and A2261: Detection of galaxy groups and filaments around clusters
Anirban Dutta, John Peterson, Matteo Cianfaglione +1
We present a weak lensing and multi-wavelength analysis of three galaxy clusters: A115, A2219, and A2261. Weak lensing is performed using shape measurements made in short 60s expos…
Weak Lensing analysis of Abell 2390 using short exposures
A. Dutta, J. R. Peterson, T. Rose +4
We present a weak lensing analysis of the galaxy cluster Abell 2390 at z = 0.23 using second moment shape measurements made in 411 short 60s exposures. The exposures are obtained i…
Forced Measurement of Astronomical Sources at Low Signal to Noise
Anirban Dutta, John R. Peterson, Glenn Sembroski
We propose a modified moment matching algorithm to avoid catastrophic failures for sources with a low signal to noise ratio (SNR). The proposed modifications include a method to el…