A new period of activity in the core of NGC660
arXiv:1507.01781 · doi:10.1093/mnras/stv1348
Abstract
The core of the nearby galaxy NGC660 has recently undergone a spectacular radio outburst; using a combination of archival radio and Chandra X-ray data, together with new observations, the nature of this event is investigated. Radio observations made using e-MERLIN in mid-2013 show a new compact and extremely bright continuum source at the centre of the galaxy. High angular resolution observations carried out with the European VLBI Network show an obvious jet-like feature to the north east and evidence of a weak extension to the west, possibly a counter-jet. We also examine high angular resolution HI spectra of these new sources, and the radio spectral energy distribution using the new wide-band capabilities of e-MERLIN. We compare the properties of the new object with possible explanations, concluding that we are seeing a period of new AGN activity in the core of this polar ring galaxy.
9 pages, 7 figures. Accepted for publication in MNRAS
References in corpus (5)
- On the origin of soft X-rays in obscured AGN: answers from high-resolution spectroscopy with XMM-Newton
- VLBI Images of 49 Radio Supernovae in Arp 220
- SFI++ II: A New I-band Tully-Fisher Catalog, Derivation of Peculiar Velocities and Dataset Properties
- Evidence of parsec-scale jets in Low-luminosity Active Galactic Nuclei
- The e-MERLIN Data Reduction Pipeline
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