An exceptionally powerful AGN outburst in the low-luminosity non-cool-core group

The shallow potentials of galaxy groups make them vulnerable to heating and gasloss caused by powerful AGN outbursts. Theoretical models suggest that feedbackat zvirgul2 must have ejected gas from groups, reducing their baryon content, but alack of identified nearby noncoolcore (NCC) groups makes it difficult todetermine whether AGN continue to have such a significant impact on thestructure of the intragroup medium (IGM). We propose a deep observation of HCG15, a disturbed noncoolcore group which appears to have undergone anexceptionally powerful AGN outburst virgul190330 Myr ago. We will search forcavities, make a more accurate estimate of the outburst power, examine the IGMfor evidence of outward gas transport, and determine whether the AGN has disrupted the group core. truncated!, Please see actual data for full text [truncated!, Please see actual data for full text]