| Type |
Conference Paper |
| Names |
W. Forman, E. Churazov, S. Giacintucci, M. Machacek, R. Kraft, C. Jones, S. Heinz, M. Markevitch, A. Vikhlinin, M. Murgia, S. Randall, R. Johnson |
| Proceedings Title |
AIP Conference Series |
| Conference Name |
X-Ray Astronomy 2009; Present Status, Multi-Wavelength Approach and Future Perspectives: Proceedings of the International Conference |
| Place |
Melville, NY |
| Publisher |
American Institute of Physics |
| Volume |
1248 |
| Pages |
273-276 |
| Series |
AIP Conference Proceedings |
| Date |
July 1, 2010 |
| URL |
http://adsabs.harvard.edu/abs/2010AIPC.1248..273F |
| Library Catalog |
NASA ADS |
| Abstract |
Abell 115 contains two merging subclusters separated by about 900 kpc.
The northern subcluster (hereafter, A115-N) contains a bright central
galaxy that hosts the radio source 3C28 which has a remarkable
morphology. Although there is no detectable active nucleus, two
prominent jets connect to a pair of radio lobes, each of which exhibits
a radio tail. We combine Chandra X-ray and VLA radio observations to
study the gas motions in and around A115-N. We use the Chandra data to
estimate the velocity of A115-N with respect to the ambient intracluster
medium as well as the velocity of the gas within the subcluster A115-N.
We suggest that the motion of A115-N through the cluster induces
counter-rotating vortices in the subcluster gas that explain the unique
morphology of 3C28 with its two tails pointing in the direction of
motion for A115-N. We compare the X-ray gas circulation time within
A115-N with the timescale computed from the spectral aging of the
radio-emitting plasma and discuss the implications of these observations
for the lifetimes of radio sources in gaseous atmospheres. |
| Tags |
ASTRONOMICAL OBSERVATORIES, Galactic center, Galactic centre, Observatories and site testing, Radio, and bipolar flows, and bulge, astrophysical jets, bar, circumnuclear matter, jets, microwave, outflows, radio sources (astronomical) |