The unusual tail of the Tornado nebula

Abstract

view Abstract Citations (15) References (21) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS The Unusual Tail of the Tornado Nebula Stewart, R. T. ; Haynes, R. F. ; Gray, A. D. ; Reich, W. Abstract We present high-resolution studies at 4.79 and 5.84 GHz, made with the Australian Telescope. These, complemented by 10.55 Ghz observations made with the Effelsberg 100 m telescope, show clear evidence for polarized looplike structure within the Tornado nebula G357.7-0.1. The transverse magnetic field appears to be tangential to the loops, suggesting that a spiral magnetic structure extends from the head to the tail of the nebula. Our observations confirm that the compact source near the head of the Tornado is extended, has a flat spectrum, is probably thermal, and unlikely to be related to the nebula. The symmetry and polarized structure are difficult to explain, but the following are worth investigating: interacting galaxies, slowly precessing Galactic or extragalactic jets, or a supernova blast wave intersecting a preexisting spiral magnetic structure. Publication: The Astrophysical Journal Pub Date: September 1994 DOI: 10.1086/187506 Bibcode: 1994ApJ...432L..39S Keywords: Magnetic Fields; Nebulae; Radio Sources (Astronomy); Stellar Mass Ejection; Infrared Radiation; Interacting Galaxies; Stellar Spectra; Supernovae; Telescopes; X Rays; Astrophysics; GALAXIES: JETS; GALAXIES: MAGNETIC FIELDS; GALAXY: CENTER; ISM: SUPERNOVA REMNANTS full text sources ADS | data products SIMBAD (4)