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Initial Radio Observations of SN1987a in the Large Magellanic Cloud

Published online by Cambridge University Press:  03 August 2017

A. J. Turtle ,
D. Campbell-Wilson ,
J. D. Bunton ,
D. L. Jauncey ,
M. J. Kesteven ,
R. N. Manchester ,
R. P. Norris ,
M. C. Storey ,
G. L. White  and
J. E. Reynolds
...Show all authors
A. J. Turtle
Affiliation:
School of Physics, Sydney University, Sydney 2006
D. Campbell-Wilson
Affiliation:
School of Physics, Sydney University, Sydney 2006
J. D. Bunton
Affiliation:
Department of Electrical Engineering, Sydney University, Sydney 2006
D. L. Jauncey
Affiliation:
Division of Radiophysics, CSIRO, P.O. Box 76, Epping, 2121
M. J. Kesteven
Affiliation:
Division of Radiophysics, CSIRO, P.O. Box 76, Epping, 2121
R. N. Manchester
Affiliation:
Division of Radiophysics, CSIRO, P.O. Box 76, Epping, 2121
R. P. Norris
Affiliation:
Division of Radiophysics, CSIRO, P.O. Box 76, Epping, 2121
M. C. Storey
Affiliation:
Division of Radiophysics, CSIRO, P.O. Box 76, Epping, 2121
G. L. White
Affiliation:
Division of Radiophysics, CSIRO, P.O. Box 76, Epping, 2121
J. E. Reynolds
Affiliation:
M.S.S.S.O., Private Bag, Woden, ACT, 2606
D. F. Malin
Affiliation:
Anglo-Australian Observatory, P.O. Box 296, Epping, 2121

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A prompt radio burst has been observed from the supernova 1987a in the Large Magellanic Cloud. Observations were made at 0.843, 1.415, 2.29, and 8.41 GHz. At frequencies around 1 GHz, the peak flux density reached about 150 mJy and occurred within four days of the supernova. This event may be a weak precursor to a major radio outburst of the type previously observed in other extragalactic supernovae. Radio monitoring of the supernova is continuing at each of the above frequencies, and coordination is underway of a southern hemisphere VLBI array to map the radio outburst region as it expands. Differential astrometry carried out on prime-focus plates taken with the Anglo-Australian telescope indicates that the component, star 1, of Sanduleak's star SK-69202 is within 0.05 ± 0.13 arcsec of the supernova.

Type
Extragalactic
Information
Symposium - International Astronomical Union , Volume 129: The Impact of VLBI on Astrophysics and Geophysics , 1988 , pp. 189
Copyright
Copyright © Reidel 1988