A (likely) X-ray jet from NGC6217 observed by XMM-Newton
arXiv:1708.06155 · doi:10.1093/mnras/stx2168
Abstract
NGC6217 is a nearby spiral galaxy with a starburst region near its center. Evidence for a low luminosity Active Galactic Nucleus (AGN) in its core has also been found in optical spectra. Intriguingly, X-ray observations by ROSAT revealed three knots aligned with the galaxy center, resembling a jet structure. This paper presents a study of XMM-Newton observations made to assess the hypothesis of a jet emitted from the center of NGC6217. The XMM data confirm the knots found with ROSAT and our spectral analysis shows that they have similar spectral properties with a hard photon index Gamma~1.7. The core of NGC6217 is well fitted by a model with an AGN and a starburst component, where the AGN contributes at most 46% of the total flux. The candidate jet has an apparent length ~15 kpc and a luminosity of ~5 X 10^38 erg/s. It stands out by being hosted by a spiral galaxy, since jets are more widely associated with ellipticals. To explain the jet launching mechanism we consider the hypothesis of an advection dominated accretion flow with a low accretion rate. The candidate jet emitted from NGC6217 is intriguing since it represents a challenge to the current knowledge of the connection between AGN, jets and host galaxies.
11 pages, 4 figures. Accepted in MNRAS
References in corpus (16)
- HyperLEDA. III. The catalogue of extragalactic distances
- Hot and cold gas accretion and feedback in radio-loud active galaxies
- The X-ray nuclei of intermediate-redshift radio sources
- A Search for "Dwarf" Seyfert Nuclei. VII. A Catalog of Central Stellar Velocity Dispersions of Nearby Galaxies
- The MIXR sample: AGN activity versus star formation across the cross-correlation of WISE, 3XMM, and FIRST/NVSS
- New results on particle acceleration in the Centaurus A jet and counterjet from a deep Chandra observation
- Elusive AGN in the XMM-Newton bright serendipitous survey
- Mega parsec relativistic jets launched from an accreting supermassive blackhole in an extreme spiral galaxy
- Markarian 6: shocking the environment of an intermediate Seyfert
- Chandra evidence for AGN feedback in the spiral galaxy NGC 6764
- VLBA Observations of Mrk 6: Probing the Jet-Lobe Connection
- J1649+2635: A Grand-Design Spiral with a Large Double-Lobed Radio Source
- CHANG-ES VIII: Uncovering Hidden AGN Activity in Radio Polarization
- Discrete Knot Ejection from the Jet in a Nearby Low Luminosity Active Galactic Nucleus, M81*
- Ground-based variability surveys towards Centaurus A: worthwhile or not?
- Superwind evolution: the young starburst-driven wind galaxy NGC 2782