Harmonic Summing Improves Pulsar Detection Sensitivity: A Probability Analysis

Autor:	Yu, Meng
Rok vydání:	2018
Předmět:	Astrophysics - Instrumentation and Methods for Astrophysics Astrophysics - High Energy Astrophysical Phenomena
Zdroj:	2018, ApJ, 868, 8
Druh dokumentu:	Working Paper
DOI:	10.3847/1538-4357/aae51a
Popis:	Practical application of the harmonic summing technique in the power-spectrum analysis for searching pulsars has exhibited the technique's effectiveness. In this paper, theoretical verification of harmonic summing considering power's noise-signal probability distribution is given. With the top-hat and the modified von Mises pulse profile models, contours along which spectra total power is expected to exceed the 3\,$\sigma$ detection threshold with 0.999 confidence corresponding to $m=1, 2, 4, 8, 16$, or 32 harmonics summed are given with respect to the mean pulse amplitude and the pulse duty cycle. Optimized numbers of harmonics summed relative to the duty cycles are given. The routine presented builds a theoretical estimate of the minimum detectable mean flux density, i.e. sensitivity, under the power-spectrum searching method. Comment: This is the originally accepted version
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/1811.07111 Zobrazit plný text záznamu View this record from Arxiv