# Galactic jet sources and the AGN connection

## Heino Falcke and Peter L. Biermann

Max-Planck Institut für Radioastronomie, Auf dem Hügel 69, D-53121 Bonn, Germany

### (1996), Astronomy & Astrophysics Vol. 308, p. 321

Abstract:

In order to further test our hypothesis that jets and disk around compact accreting objects are symbiotic features we investigate the newly discovered superluminal galactic radio jets GRS 1915+105 and GRO J1655-40 and the two famous galactic radio jets 1E1740-2942 and SS 433 within the framework of our couple 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 flat spectrum radio source associated with compact objects -- the X-ray binaries Cyg X-1, Cyg X-2, Cyg X-3 and Sco X-1 -- where a jet origin has been proposed earlier on theoretical grounds. In an disk/radio luminosity 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 $L_{\rm disk}$/radio ratio we find 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 confirm this trend.

Paper: Available in PostScript and Tex Format.

Other publications can be found here.

Questions: Heino Falcke, hfalcke@mpifr-bonn.mpg.de