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A NEW POPULATION OF GAMMA-RAY EMITTERS AMONG FERMI-LAT UNASSOCIATED SOURCESWE AIM TO UNDERTAKE A DETAILED EXAMINATION OF EVERY FERMI DETECTED OBJECT NOT IDENTIFIED WITH A KNOWN SOURCE TYPE (E.G. BLAZAR PULSAR). IN 3FGL (4-YEARS OF DATA) A CONSIDERABLY LARGE NUMBER OF SUCH SOURCES REMAIN ~25% OF THE TOTAL. FOR EVERY NEW UNASSOCIATED 3FGL SOURCE WE WILL USE VLA/ATCA OBSERVATIONS TO PROBE FOR RADIO SOURCES WITHIN THE LAT ERROR ELLIPSE. WE WILL FOLLOW UP WITH VLBI OBSERVATIONS USING THE DETERMINED RADIO POSITIONS TO CONFIRM IDENTIFICATIONS. THIS WILL INCREASE THE NUMBEROF RADIO-GAMMA ASSOCIATIONS AND WILL ALLOW US TO STUDY THE PROPERTIES OF "ATYPICAL" OBJECTS WITH PEAKED OR STEEP SPECTRUM RADIO COUNTERPARTS. FROM OUR WORK ON 2FGL WE HAVE FOUND EVIDENCE FOR A NEW POPULATION OF STEADY RADIO-QUIET GAMMA-RAY SOURCES THAT WE EXPECT TO CONFIRM AS A NEW SOURCE CLASS.

$97,999FY2014National Aeronautics and Space AdministrationNASA

University Of New Mexico, Albuquerque NM

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