Science highlights from the RadioLife ERC AdG project
Goal of the project is to understand the life-cycle of radio sources and to connect it to the presence and characteristics of the circumnuclear gas. We trace this gas using different components, in particular using HI (observed in absorption) but also molecular and ionised gas.
We trace the evolutionary stage of the radio sources using the characteristics of their radio spectra. The goal in this case is to derive their duty-cycle and whether it can have influence on the host galaxy.
Finally, we aim at tracing the interplay between radio plasma and the interstellar medium by investigating the presence and kinematic characteristics of the gas in the circumnuclear regions in particular by studying infalling (feeding) and outflowing (feedback) gas.
The project covers the following themes:
- Gas content: HI in the circumnnuclear region of (radio) AGN
- Interplay between the gas in the circumnnuclear region of (radio) AGN and the nuclear activity: the fuelling (see the study of PKS1718-63 and NGC3998)
- Interplay between the radio plasma/jet and the gas in the circumnnuclear region of (radio) AGN: study of fast and massive outflows driven by the radio (e.g. IC5063), or by radiation (e.g. Mrk231)
- The interaction of a low-powerful jet: kinematics of the gas and jet induced star-formation in Centaurus A
- The life-cycle of radio sources: how to identify dying and restarted radio sources
- Linking gas content and kinematics to the phase in the evolution of radio galaxies when these outflows occur and in understanding the life-cycle of radio sources.
Some of the recent papers:
The Lockman Hole project: LOFAR observations and spectral index properties of low-frequency radio sources, by Mahony, E. K., Morganti, R.; Prandoni, I. et al. 2016 MNRAS
Embedded star formation in the extended narrow line region of Centaurus A: Extreme mixing observed by MUSE by Santoro et al. 2016, A&A 590, 37
The warm molecular hydrogen of PKS B1718-649. Feeding a newly born radio AGN by Maccagni et al. 2016, A&A 588, 46
The outer filament of Centaurus A as seen by MUSE by Santoro et al. 2015 A&A Letter, 575, 4
The fast molecular outflow in the Seyfert galaxy IC~5063 as seen by ALMA by R. Morganti, T. Oosterloo, R. Oonk, W. Frieswijk and C. Tadhunter 2015 A&A 580, 1
Radio Jets Clearing the Way Through a Galaxy: Watching Feedback in Action, R. Morganti, J. Fogasy, Z. Paragi, T. Oosterloo, M. Orienti, 2013 Science 341, 1082
Jet acceleration of the fast molecular outflows in the Seyfert galaxy IC 5063, C. Tadhunter, R. Morganti, M. Rose , J. B. R. Oonk & T. Oosterloo 2014, Nature 511, 410
Dying radio galaxies in the LOFAR Lockman Hole by Brienza et al. 2016, Proceedings of the conference “The many facets of extragalactic radio surveys: towards new scientific challenges“, PoS(EXTRA-RADSUR2015)068
LOFAR discovery of a 700-kpc remnant radio galaxy at low redshift by M. Brienza, L. Godfrey, R. Morganti et al. 2015 A&A 585, 29