One of the largest uncertainties in the Point Source (PS) studies, at Fermi-LAT energies, is the uncertainty in the diffuse background. In general there are two approaches for PS analysis: background-dependent methods, that include modeling of the diffuse background, and background-independent methods. In this work we study PGWave, which is one of the background-independent methods, based on wavelet filtering to find significant clusters of gamma rays. PGWave is already used in the Fermi-LAT catalog pipeline for finding candidate sources. We test PGWave, not only for source detection, but especially to estimate the flux without the need of a background model. We use Monte Carlo (MC) simulation to study the accuracy of PS detection and estimation of the flux. We present preliminary results of these MC studies.
Cite
@article{arxiv.1610.01351,
title = {Point Source Detection and Flux Determination with PGWave},
author = {Giacomo Principe and Dmitry Malyshev},
journal= {arXiv preprint arXiv:1610.01351},
year = {2017}
}
Comments
5 pages, 7 figures, published in proceedings for the Gamma 2016 conference