Title
Gamma-ray counterparts of radio astrophysical sources
Date Issued
01 January 2019
Access level
open access
Resource Type
journal article
Publisher(s)
Institute of Physics Publishing
Abstract
In this paper 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-ray 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 4FGL catalog. Sources with test statistic greater than 16 (corresponding to about 4σ) were further analyzed including 2 FRBs and 7 FR0s. No correlations with more than 5σ were found after taking into account nearby sources. Therefore, upper limits for all sources were calculated.
Volume
2019
Issue
12
Language
Spanish
OCDE Knowledge area
Astronomía Física de partículas, Campos de la Física
Scopus EID
2-s2.0-85080907093
Source
Journal of Cosmology and Astroparticle Physics
ISSN of the container
14757516
Sources of information: Directorio de Producción Científica Scopus