We present a multifrequency analysis of the radio galaxy 3CR 196.1 (z=0.198), associated with the brightest galaxy of the cool-core cluster CIZAJ0815.4-0303. This nearby radio galaxy shows a hybrid radio morphology and an X-ray cavity, all signatures of a turbulent past activity, potentially due to merger events and active galactic nuclei (AGN) outbursts. We present results of the comparison between Chandra and Very Large Telescope Multi-Unit Spectroscopic Explorer data for the inner region of the galaxy cluster, on a scale of tens of kpc. We discovered Hα + [N ii]λ6584 emission spatially associated with the X-ray cavity (at ∼10 kpc from the galaxy nucleus) instead of with its rim. This result differs from previous discoveries of ionized gas surrounding X-ray cavities in other radio galaxies harbored in galaxy clusters and could represent the first reported case of ionized gas filling an X-ray cavity, either due to different AGN outbursts or to the cooling of warm (104 < T ≤ 107 K) AGN outflows. We also found that the Hα, [N ii]λ λ6548, 6584, and [S ii]λ λ6718, 6733 emission lines show an additional redward component, at ∼1000 km s−1 from rest frame, with no detection in Hβ or [O iii]λ λ4960, 5008. We believe the most likely explanation for this redward component is the presence of a background gas cloud as there appears to be a discrete difference of velocities between this component and the rest frame.

The Cavity of 3CR 196.1: Hα Emission Spatially Associated with an X-Ray Cavity / Jimenez-Gallardo A.; Sani E.; Ricci F.; Mazzucchelli C.; Balmaverde B.; Massaro F.; Capetti A.; Forman W.R.; Kraft R.P.; Venturi G.; Gendron-Marsolais M.; Prieto M.A.; Marconi A.; Pena-Herazo H.A.; Baum S.A.; O'Dea C.P.; Lovisari L.; Gilli R.; Torresi E.; Paggi A.; Missaglia V.; Tremblay G.R.; Wilkes B.J.. - In: THE ASTROPHYSICAL JOURNAL. - ISSN 0004-637X. - ELETTRONICO. - 941:(2022), pp. 114.0-114.0. [10.3847/1538-4357/aca08b]

The Cavity of 3CR 196.1: Hα Emission Spatially Associated with an X-Ray Cavity

Sani E.;Balmaverde B.;Venturi G.;Marconi A.;Gilli R.;
2022

Abstract

We present a multifrequency analysis of the radio galaxy 3CR 196.1 (z=0.198), associated with the brightest galaxy of the cool-core cluster CIZAJ0815.4-0303. This nearby radio galaxy shows a hybrid radio morphology and an X-ray cavity, all signatures of a turbulent past activity, potentially due to merger events and active galactic nuclei (AGN) outbursts. We present results of the comparison between Chandra and Very Large Telescope Multi-Unit Spectroscopic Explorer data for the inner region of the galaxy cluster, on a scale of tens of kpc. We discovered Hα + [N ii]λ6584 emission spatially associated with the X-ray cavity (at ∼10 kpc from the galaxy nucleus) instead of with its rim. This result differs from previous discoveries of ionized gas surrounding X-ray cavities in other radio galaxies harbored in galaxy clusters and could represent the first reported case of ionized gas filling an X-ray cavity, either due to different AGN outbursts or to the cooling of warm (104 < T ≤ 107 K) AGN outflows. We also found that the Hα, [N ii]λ λ6548, 6584, and [S ii]λ λ6718, 6733 emission lines show an additional redward component, at ∼1000 km s−1 from rest frame, with no detection in Hβ or [O iii]λ λ4960, 5008. We believe the most likely explanation for this redward component is the presence of a background gas cloud as there appears to be a discrete difference of velocities between this component and the rest frame.
2022
941
0
0
Jimenez-Gallardo A.; Sani E.; Ricci F.; Mazzucchelli C.; Balmaverde B.; Massaro F.; Capetti A.; Forman W.R.; Kraft R.P.; Venturi G.; Gendron-Marsolais M.; Prieto M.A.; Marconi A.; Pena-Herazo H.A.; Baum S.A.; O'Dea C.P.; Lovisari L.; Gilli R.; Torresi E.; Paggi A.; Missaglia V.; Tremblay G.R.; Wilkes B.J.
File in questo prodotto:
Non ci sono file associati a questo prodotto.

I documenti in FLORE sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificatore per citare o creare un link a questa risorsa: https://hdl.handle.net/2158/1308466
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 5
  • ???jsp.display-item.citation.isi??? 5
social impact