English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

The radio galaxy 1321+045 is a rare example of a young, compact steepspectrum source located in the center of a z=0.263 galaxy cluster. Using acombination of Chandra, VLBA, VLA, MERLIN and IRAM 30m observations, weinvestigate the conditions which have triggered this outburst. We find that thepreviously identified 5 kpc scale radio lobes are probably no longer powered bythe AGN, which seems to have launched a new ~20 pc jet on a different axis,likely within the last few hundred years. We estimate the enthalpy of the lobesto be 8.48 [+6.04,-3.56] x10^57 erg, only sufficient to balance cooling in thesurrounding 16 kpc for ~9 Myr. The cluster ICM properties are similar to thoseof rapidly cooling nearby clusters, with a low central entropy (8.6 [+2.2,-1.4]kev cm^2 within 8 kpc), short central cooling time (390 [+170,-150] Myr), andt_cool/t_ff and t_cool/t_eddy ratios indicative of thermal instability out to~45 kpc. Despite previous detection of Halpha emission from the BCG, our IRAM30m observations do not detect CO emission in either the (1-0) or (3-2)transitions. We place 3sigma limits on the molecular gas mass of M_mol<=7.7x10^9 Msol and <=5.6x10^9 Msol from the two lines respectively. We findindications of a recent minor cluster merger which has left a ~200 kpc tail ofstripped gas in the ICM, and probably induced sloshing motions.

The cluster-central compact steep-spectrum radio galaxy 1321+045