AGN-Induced Cavities in NGC 1399 and NGC 4649

Details AGN-Induced Cavities in NGC 1399 and NGC 4649 AGN-Induced Cavities in NGC 1399 and NGC 4649

2007-10-30

arxiv.org/abs/0710.5704v1

Astronomy and Astrophysics

Astrophysics

8 pages, 2 figures, accepted for publication in MNRAS

Scientific paper

We present an analysis of archival Chandra and VLA observations of the E0 galaxy NGC 1399 and the E2 galaxy NGC 4649 in which we investigate cavities in the surrounding X-ray emitting medium caused by the central AGN. We calculate the jet power required for the AGN to evacuate these cavities and find values of ~8x10^{41} erg/s and ~14x10^{41} erg/s for the lobes of NGC 1399 and ~7x10^{41} erg/s and ~6x10^{41} erg/s for those of NGC 4649. We also calculate the k/f values for each cavity, where k is the ratio of the total particle energy to that of electrons radiating in the range of 10 MHz to 10 GHz, and f is the volume filling factor of the plasma in the cavity. We find that the values of k/f for the lobes of NGC 1399 are ~93 and ~190, and those of the lobes of NGC 4649 are ~15000 and ~12000. We conclude that the assumed spectrum describes the electron distribution in the lobes of NGC 1399 reasonably well, and that there are few entrained particles. For NGC 4649, either there are many entrained particles or the model spectrum does not accurately describe the population of electrons.

Affiliated with

Also associated with

No associations

Rating

AGN-Induced Cavities in NGC 1399 and NGC 4649 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 AGN-Induced Cavities in NGC 1399 and NGC 4649, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and AGN-Induced Cavities in NGC 1399 and NGC 4649 will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-365843