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Title:
The Evolution of the Central Component in Supernova 1986J
Authors:
Bietenholz, M.; Bartel, N.
Publication:
36th COSPAR Scientific Assembly. Held 16 - 23 July 2006, in Beijing, China. Meeting abstract from the CDROM, #3143
Publication Date:
00/2006
Origin:
ADS
Bibliographic Code:
2006cosp...36.3143B

Abstract

A new bright radio component was recently discovered near the center of the expanding shell of supernova 1986J The new component was first seen as an inversion in the integrated spectrum above 5 GHz Subsequent multi-frequency VLBI measurements showed that this inversion was related to a new component in the center of the projected shell rather than to a known hot spot in the shell Neither such a spectral inversion nor a central component has been seen in any other supernova The new component is likely energetic output from accretion onto a black hole like jets or lobes or the nebula formed around an energetic young neutron star in the center of SN 1986J which for the first time would directly link a black hole or a neutron star to a modern supernova We report on our latest results the central component has brightened at low frequencies and is now prominent at 5 GHz We discuss the evolution of the radio spectrum of SN 1986J and present a resolved image of the central component at 22 GHz
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