An unusual radio loop in the edge-on Seyfert galaxy NGC 5506

Details An unusual radio loop in the edge-on Seyfert galaxy NGC 5506 An unusual radio loop in the edge-on Seyfert galaxy NGC 5506

Feb 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987apj...313l..43w&link_type=abstract

Astrophysical Journal, Part 2 - Letters to the Editor (ISSN 0004-637X), vol. 313, Feb. 15, 1987, p. L43-L46.

Astronomy and Astrophysics

Astrophysics

27

Radio Galaxies, Seyfert Galaxies, Astronomical Maps, Continuous Radiation, Galactic Nuclei, High Temperature Plasmas, Loops

Scientific paper

Images at 6 cm and 2 cm of the 'edge-on' Seyfert galaxy NGC 5506 were obtained with about 0.4-arcsec resolution. Both images show an unresolved core (less then 40 pc diameter) and a diffuse halo (about 300 pc diameter). A loop (about 100 pc diameter) that is too bright to be a normal supernova remnant appears in the 6-cm image. The loop's spectral index indicates that the radio continuum emission is nonthermal. It is suggested that the loop might be a bubble of hot plasma rising from the nucleus or a magnetically dominated coronal arch.

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