Astronomy and Astrophysics – Astrophysics
Scientific paper
1993-08-24
Astron.Astrophys.278:L1,1993
Astronomy and Astrophysics
Astrophysics
4 pages + 1 figure available on request, LaTeX (laa.sty), MPIfR 1690
Scientific paper
Recent observations of the radio and NIR source Sgr A* reinforce the interpretation of the Galactic Center as a scaled down version of an AGN. The discovery of an elongated structure at 43 GHz and increasing evidence for the presence of an accretion disk surrounding a Black Hole lead us to assume that both, an accretion disk and a jet, are present in the Galactic Center and are physically linked. We model the radio emission of Sgr A* successfully with a Blandford & K"onigl type jet and analyze the energetics of the coupled jet-disk system in Sgr A* where jet and disk are parametrized in terms of the accretion power. With this method we are able to confirm independently the lower limit of the Sgr A* accretion rate \dot M >> 10^-8.5 M_sun found previously. Moreover, using the limits imposed by observational data, we show that within such a jet-disk model, the total jet power Q_jet is of comparable order as the radiated disk luminosity L_disk. A jet model together with the assumption of an 10^6 M_sun Black Hole also qualitatively explains the submm excess and the lack of non-thermal IR radiation. The small size of the visible part of the jet (< 1 mas) is due to the low accretion rate of Sgr A*. <<>>
Biermann Peter L.
Falcke Heino
Mannheim Karl
No associations
LandOfFree
The Galactic Center radio jet does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with The Galactic Center radio jet, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The Galactic Center radio jet will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-126803