On the minimum jet power of TEV BL Lac objects in the p-$\gamma$ model

Abstract

We study the requirement on the jet power in the conventional p-$\gamma$ models (photopion production and Bethe-Heitler pair production) for TeV BL Lac objects. We select a sample of TeV BL Lac objects whose SEDs are difficult to be explained by the one-zone leptonic model. Based on the relation between the p-$\gamma$ interaction efficiency and the opacity of $\gamma \gamma$ absorption, we find that the detection of TeV emission poses upper limits on the p-$\gamma$ interaction efficiencies in these sources and hence minimum jet powers can be derived accordingly. We find that the obtained minimum jet powers exceed the Eddington luminosity of the supermassive black holes. Implications for the accretion mode of the supermassive black hole in these BL Lac objects and the origin of their TeV emissions are discussed.

11 pages, 4 figures, 2 tables, accepted for publication in ApJ

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• A two-zone blazar radiation model for "orphan" neutrino flares
• Multicolor Optical Monitoring of the Blazar S5 0716+714 from 2017 to 2019
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• Revisiting the proton synchrotron radiation in blazar jets: Possible contributions from X-ray to $\gamma$-ray bands
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• An explanation about the flat radio spectrum for Mrk 421
• Analytical Constraints on the Radius and Bulk Lorentz Factor in the Lepto-Hadronic One-Zone Model of BL Lacs