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...3386|bibcode=1999A&A...349...11A|year=1999}}</ref> It is a [[blazar]] or [[BL Lac object]], which is an [[active galactic nucleus]] with a jet that is sh ...a longstanding 'unanswered question' about the dynamics of these brilliant objects."<ref>{{Cite web |title=Scientists Solve Major Mystery of Powerful Energy B ...

...mental Parameters and Spectral Energy Distributions of Young and Field Age Objects with Masses Spanning the Stellar to Planetary Regime|journal=The Astrophysi ...mental Parameters and Spectral Energy Distributions of Young and Field Age Objects with Masses Spanning the Stellar to Planetary Regime |journal=The Astrophys ...