Galactic jet sources and the AGN

نویسنده

  • Peter L. Biermann
چکیده

In order to further test our hypothesis that jets and disk around compact accreting objects are symbi-otic features we investigate the newly discovered superlu-minal galactic radio jets GRS 1915+105 and GRO J1655-40 and other galactic radio jets like 1E1740-2942, GRS 1758-258 and SS 433 within the framework of our coupled jet/disk model developed initially for active galactic nuclei (AGN) and the galactic center source Sgr A*. By comparing the \disk" and radio core luminosity of those galactic jet sources with our model prediction we can show that they can easily be understood as AGN-like jets where the accretion power onto a central compact object is scaled down by several orders of magnitude. The total power of the jets must be comparable to the disk luminosity-at least for the superluminal sources. To broaden our view we also shortly discuss the situation in other galactic at spectrum radio sources associated with compact objects { the X-ray binaries Cyg X-1, Cyg X-2, Cyg X-3, Sco X-1, Cir X-1 { where a jet origin has been proposed earlier on theoretical grounds. In a disk/radio luminosity diagram their radio cores also fall within our model prediction for scaled down radio loud and radio weak AGN-jets. Taking all sources together and comparing their L disk /radio ratio we nd an indication for a similar radio loud/radio weak dichotomy as found earlier for quasar radio cores, however, a larger number of galactic jet sources is needed to connrm this trend.

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تاریخ انتشار 2007