Radio Follow-up on all Unassociated Gamma-ray Sources from the Third Fermi Large Area Telescope Source Catalog

Understand

The third Fermi Large Area Telescope (LAT) $\gamma$-ray source catalog (3FGL) contains over 1000 objects for which there is no known counterpart at other wavelengths.

• The physical origin of the $\gamma$-ray emission of those objects is unknown.
• Such objects are commonly referred to as unassociated and mostly do not exhibit significant $\gamma$-ray flux variability.
• We performed a survey of all unassociated $\gamma$-ray sources found in 3FGL using the Australia Telescope Compact Array and Very Large Array in the range of 4.0-10.0 GHz.