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IN A SEMINAL PAPER SIKORA BEGELMAN AND REES (1994) ARGUED THAT THE GAMMA-RAY EMISSION FROM BLAZARS IS DUE TO EXTERNAL COMPTON SCATTERING OF NUCLEAR BROAD-LINE PHOTONS. THIS MODEL QUICKLY BECAME A PARADIGM IN THE FIELD THOUGH A LONG-STANDING ISSUE IS ITS INABILITY TO EXPLAIN THE ANOMALOUSLY HIGH AMPLITUDE OF GAMMA-RAY FLARES COMPARED TO LOWER ENERGIES. HERE WE PROPOSE TO SHOW THAT MOVING THE BLAZAR EMISSION LOCATION OUT BEYOND THE PARSEC-SCALE EXTERNAL PHOTON FIELDS AND MODELING IT AS SYNCHROTRON-SELF COMPTON OF FIRST AND SECOND ORDER SOLVES MANY OBSERVATIONAL ISSUES INCLUDING THE HIGH-AMPLITUDE VARIABILITY. IN THIS FRAMEWORK WE WILL ALSO EXPLORE THE IDEA THAT THE BLAZAR SEQUENCE CAN BE EXPLAINED BY VARYING A SINGLE PARAMETER THE RELATIVISTIC ELECTRON POWER INJECTED IN THE JET.

$75,000FY2021National Aeronautics and Space AdministrationNASA

University Of Maryland Baltimore County, Baltimore MD

Investigators

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