Búsqueda de correlaciones de rayos gamma con nuevas fuentes de radio astrofísicas

• Autor: Best Reyes, Sergio André
• Formato: tesis de maestría
• Fecha de Publicación: 2019
• Institución: Pontificia Universidad Católica del Perú
• Repositorio: PUCP-Tesis
• Lenguaje: inglés
• OAI Identifier: oai:tesis.pucp.edu.pe:20.500.12404/14340
• Enlace del recurso: http://hdl.handle.net/20.500.12404/14340
• Nivel de acceso: acceso abierto
• Materia: Rayos Gamma; Fotones; Radioastronomía; https://purl.org/pe-repo/ocde/ford#1.03.00

In this work we study two newly discovered classes of radio sources: the highly energetic, short-lived events, known as Fast Radio Bursts (FRBs), and a new category of compact sources known as Fanaroff-Riley type 0 radio galaxies (FR0s). Due to a possible catastrophic event origin for the FRBs and a previous correlation found with an FR0 in the Γ-rays spectrum, it is possible that these radio sources could also emit high energy photons in the Fermi-LAT satellite energy range (20 MeV - 300 GeV). Here we present an exhaustive time-dependent and spatial search of all up-to-date observed FRBs and FR0s, respectively. We perform a likelihood analysis of the radio sources by modeling the excess flux of gamma rays with a varying index power law function using data from Fermi-LAT and the 3FGL catalog. No correlations with more than 5 σ were found. Two FRBs and one FR0 with more than 4 σ were further analyzed. However, the significance from these sources is most likely due to nearby blazars. Therefore, upper limits for all sources are calculated.