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Multiwavelength study of potential blazar candidates among Fermi-LAT unidentified gamma-ray sources

Published online by Cambridge University Press:  29 January 2021

Jean Damascène Mbarubucyeye
Affiliation:
Deutsches Elektronen-Synchrotron (DESY), Platanenallee 6, 15738Zeuthen, Germany, email: [email protected]
Felicia Krauß
Affiliation:
Department of Astronomy & Astrophysics, Pennsylvania State University, University Park, PA16801, USA email: [email protected]
Pheneas Nkundabakura
Affiliation:
University of Rwanda, College of Education, P.O. Box 5039, Kigali, Rwanda email: [email protected]
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Abstract

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Studying unidentified γ-ray sources is important as they may hide new discoveries. We conducted a multiwavelength analysis of 13 unidentified Fermi-LAT sources in the 3FGL catalogue that have no known counterparts (Unidentified Gamma-ray Sources, UnIDs). The sample was selected for sources that have a single radio and X-ray candidate counterpart in their uncertainty ellipses. The purpose of this study is to find a possible blazar signature and to model the Spectral Energy Distribution (SED) of the selected sources using an empirical log parabolic model. The results show that the synchrotron emission of all sources peaks in the infrared (IR) band and that the high-energy emission peaks in MeV to GeV bands. The SEDs of sources in our sample are all blazar like. In addition, the peak position of the sample reveals that 6 sources (46.2%) are Low Synchrotron Peaked (LSP) blazars, 4 (30.8%) of them are High Synchrotron Peaked (HSP) blazars, while 3 of them (23.0%) are Intermediate Synchrotron Peaked (ISP) blazars.

Type
Contributed Papers
Copyright
© The Author(s), 2021. Published by Cambridge University Press on behalf of International Astronomical Union

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