Gamma-ray counterparts of radio astrophysical sources

被引：3
|
作者：
Best, S. [1 ]
Bazo, J. [1 ]
机构：
[1] Pontificia Univ Catolica Peru, Dept Ciencias, Secc Fis, Av Univ 1801, Lima 32, Peru
来源：
JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS | 2019年 / 12期
关键词：
gamma ray experiments; active galactic nuclei; gamma ray detectors; BURST;
D O I：
10.1088/1475-7516/2019/12/004
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
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 gamma-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 4 sigma) were further analyzed including 2 FRBs and 7 FR0s. No correlations with more than 5 sigma were found after taking into account nearby sources. Therefore, upper limits for all sources were calculated.
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页数：15
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