VLA observations of the supernova remnant 3C400-2 at 327 MHz and 1465 MHz

Details VLA observations of the supernova remnant 3C400-2 at 327 MHz and 1465 MHz VLA observations of the supernova remnant 3C400-2 at 327 MHz and 1465 MHz

Jul 1994

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994aj....108..207d&link_type=abstract

The Astronomical Journal, vol. 108, no. 1, p. 207-213

Astronomy and Astrophysics

Astronomy

18

Polarization, Radio Astronomy, Supernova Remnants, Very Large Array (Vla), Morphology, Radio Emission, Radio Sources (Astronomy)

Scientific paper

We have observed the supernova remnant 3C400.2 with the very large array (VLA) at 327.5 and 1465 MHz. The images, obtained with an angular resolution better than 1 min and a sensitivity of 1 mJy/beam, show significant new features that suggest that the radio remnant may be formed by two highly symmetrical circular shells that overlap in the northwest. The x-ray emitting region fills the interior of the radio shells, peaking in the region where the radio continuum synchrotron rings overlap. A detailed spatial correlation of optical filaments with the newly discovered radio features is found. Two different scenarios consistent with the observed morphologies are proposed: (a) 3C400.2 is the result of an explosion occurring inside the wind-driven bubble excavated by a massive progenitor star, or (b) the distribution of the emission observed in the different spectral ranges is the signature of two different SN explosions.

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