| Type |
Conference Paper |
| Names |
Hanna Herbst, K. Hess, E. Wilcots |
| Proceedings Title |
Bulletin of the American Astronomical Society |
| Conference Name |
American Astronomical Society, AAS Meeting #217, #149.07 |
| Volume |
43 |
| Pages |
14907 |
| Date |
January 1, 2011 |
| URL |
http://adsabs.harvard.edu/abs/2011AAS...21714907H |
| Library Catalog |
NASA ADS |
| Abstract |
Our current understanding of the formation and evolution of galaxy
groups and clusters is impeded by a major problem. Models of
gravitational collapse predict that the cores of galaxy groups should
have had sufficient time to cool, but no observations have shown
evidence of the cool gas that should reside in the cores. This means
there must be some source of non-gravitational energy that is heating
the intergalactic medium (IGM) and hindering the cooling flows. The two
most likely sources are starburst driven galactic outflows or galactic
outflows from active galactic nuclei (AGN). Here, we study AGN powered
galactic outflows in NGC 1052 and NGC 741 as a possible source of the
excess non-gravitational heating seen in x-ray observations. VLA data is
used to estimate the total output of the radio jets, which is then
compared the observed x-ray luminosity of the IGM, in order to determine
to what extent AGN outflows could be responsible for the heating of the
IGM. |