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18 April 2024 |
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An ATCA Observation of the Youngest Known Galactic SNR G1.9+0.3 | | A. Y. De Horta
; M. D. Filipović
; E. J. Crawford
; F. H. Stootman
; T. G. Pannuti
; | | Date: |
23 Jun 2008 | | Abstract: | We present an analysis of a previously unpublished radio-continuum
observation of SNR G1.9+0.3 which at an age of <=150 years is the youngest
known in the Galaxy. The observations were made in 1993 using the Australia
Telescope Compact Array (ATCA) at two 6-cm frequencies. We note two previously
unseen blow-out structures in the north and south direcions. We estimate a flux
density of 1.545Jy, an outer diameter of ~80" and confirm an expansion rate of
~0.65% per year between 1985 and 2008. No polarisation was detected in the
radio emission from SNR G1.9+0.3 above the 1% level. We also present these
previously unpublished results as a high resolution reference point from which
to study the evolution of SNRs at times for which there is a gap in our
knowledge. | | Source: | arXiv, 0806.3605 | | Services: | Forum | Review | PDF | Favorites | |
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