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http://hdl.handle.net/11154/1393
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Title: | PKS 1622-253: A weakly accreting, powerful gamma-ray source |
Authors: | Punsly, B Tingay, SJ Cellone, SA Rodríguez, LF |
Issue Date: | 2005 |
Abstract: | 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 underluminous by quasar standards, a powerful superluminal 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 in order to power the strongest high-energy gamma-ray sources. |
URI: | http://hdl.handle.net/11154/1393 |
ISSN: | 0004-637X |
Appears in Collections: | Ciencias
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