A statistical classification of the unassociated gamma-ray sources in the second Fermi Large Area Telescope Catalog

• 来源期刊: 天文和天体物理学研究
• 年，卷（期）: 2013,（8）
• 页码范围: 952-960
• 页数: 9页
• 语种: 英文

摘要

With the assistance of the identified/associated sources in the second Fermi Large Area Telescope (LAT) catalog,we analyze and resolve the spatial distribution and the distributions of the gamma-ray spectral and variability indices of the remaining 575 unassociated Fermi LAT sources.Consequently,it is suggested that the unassociated sources could statistically consist of Galactic supernova remnants/pulsar wind nebulae,BL Lacertae objects,flat spectrum radio quasars and other types of active galaxies with fractions of 25％,29％,41％ and 5 ％,respectively.