Astronomy and Astrophysics – Astrophysics
Scientific paper
Jan 2008
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008aipc..968..348c&link_type=abstract
ASTROPHYSICS OF COMPACT OBJECTS: International Conference on Astrophysics of Compact Objects. AIP Conference Proceedings, Volum
Astronomy and Astrophysics
Astrophysics
Star Formation, Mass Loss And Stellar Winds, Black Holes, Accretion And Accretion Disks, Galactic Center, Bar, Circumnuclear Matter, And Bulge
Scientific paper
We present our work to study the origin of the massive stars observed close to Sgr A*, the Galactic super-massive black hole, and the dynamics of the massive stars' winds. We argue that the stars were formed in a ~104 Msolar accretion disc that existed around Sgr A* in the past. We find that the stellar dynamics constrain the total mass of the stellar population, requiring the mass function to be dominated by massive stars. We present a numerical study of star formation in a massive disc and show the influence of radiative cooling on the resulting mass function. We also present simulations of the accretion of stellar winds onto Sgr A*. We first discuss the strong influence of the stellar dynamics on the accretion onto the central black hole. From realistic simulations of Sgr A* accretion we find that slow winds shock and rapidly cool, forming cold gas clumps and filaments that coexist with the hot X-ray emitting gas. The accretion rate is highly variable on time-scales of tens to hundreds of years. Such variability can lead to a strongly non-linear response through accretion flow physics, making Sgr A* an important energy source for the Galactic centre.
No associations
LandOfFree
Star formation and stellar winds around the Galactic super-massive black hole 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 Star formation and stellar winds around the Galactic super-massive black hole, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Star formation and stellar winds around the Galactic super-massive black hole will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1590897