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PKS 1622-253: A Weakly Accreting, Powerful Gamma Ray Source

Brian Punsly·Luis Rodriguez·Steven Tingay·Sergio Cellone
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Abstract

In this Letter, we discuss new deep radio observations of PKS 1622-253 and their implications for the energetics of the central engine that powers this strong high energy gamma-ray source. Combining archival infrared and optical measurements with new millimeter observations, we show that even though the accretion flow in PKS 1622-253 is under-luminous by quasar standards, a powerful super-luminal jet is launched with a higher kinetic luminosity than most EGRET blazars. Only a few percent of the total jet kinetic luminosity is required to power even the most powerful gamma ray flares that are observed. The implication is that a high accretion system is not required to power the strongest high energy gamma ray sources.

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Brian Punsly, Luis Rodriguez, Steven Tingay, Sergio Cellone. 2005-09-28. PKS 1622-253: A Weakly Accreting, Powerful Gamma Ray Source. https://doi.org/10.1086/498307

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