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A Supernova Remnant in Centaurus

Published online by Cambridge University Press:  25 April 2016

J. B. Whiteoak  and
F. F. Gardner
J. B. Whiteoak
Affiliation:
Division of Radiophysics, CSIRO, Sydney
F. F. Gardner
Affiliation:
Division of Radiophysics, CSIRO, Sydney
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Extract

Observations of the composite radio source which includes the catalogued components 1209-52 and 1209-51 (Bolton et al. 1964) have been obtained at frequencies 629, 1410, and 2650 MHz with the 210-ft Parkes telescope. The observations at the highest frequency are shown in Figure 1. The isotherms of full-beam brightness temperature correspond to the single polarization direction shown within the circle representing the half-intensity beamwidth. The polarization vectors (unbroken lines) along the two ridges represent 15-25% linear polarization. The intrinsic angles of polarization, derived from the 1410 and 2650 MHz observations, are represented by the broken lines. They are perpendicular to the magnetic field if the radiation is synchrotron. The corresponding rotation measures (Gardner and Whiteoak 1963) range between +17 and +36 rad. m-2 along the eastern ridge, and between —14 and —4 on the western side.

Type
Contributions
Information
Publications of the Astronomical Society of Australia , Volume 1 , Issue 1 , January 1967 , pp. 22 - 23
Copyright
Copyright © Astronomical Society of Australia 1967

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References

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