A Model-Independent Determination of Red Noise in Pulsar Timing Arrivals

Autor:	Reyes, Reinabelle, Bernido, Christopher C.
Rok vydání:	2023
Předmět:	Astrophysics - Instrumentation and Methods for Astrophysics Statistics - Methodology
Druh dokumentu:	Working Paper
Popis:	Noise is ubiquitous in pulsar signals where red noise has been attributed to effects arising from the interstellar medium, spin noise, and pulsar mode changes, among others. The red noise, however, has not been detected in all pulsars. Using the dataset from the North American Nanohertz Observatory for Gravitational Waves (NANOGrav), we investigate twenty-three pulsars and show that an evaluation of the mean square deviation and probability distribution of timing residuals can provide a straightforward way of determining the presence of red noise. The results agree with those reported in the literature. The model-free method presented could complement the normally more sophisticated model-dependent way of determining red noise in timing residuals. Comment: 15 pages, 6 figures. Submitted to Frontiers in Astronomy and Space Sciences
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/2303.00931 Zobrazit plný text záznamu View this record from Arxiv