Radio Shell Expansion of the Remnant of 1006 A.D.

Details Radio Shell Expansion of the Remnant of 1006 A.D. Radio Shell Expansion of the Remnant of 1006 A.D.

Dec 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992aas...181.7005m&link_type=abstract

American Astronomical Society, 181st AAS Meeting, #70.05; Bulletin of the American Astronomical Society, Vol. 24, p.1232

Astronomy and Astrophysics

Astronomy

1

Scientific paper

A second epoch radio image of the remnant of SN 1006 has been made with the VLA, matching previous images from observations made nearly eight years ago by Reynolds and Gilmore (1986). The objective of this observation was to confirm possible expansion of the radio shell. Long, Blair, and van den Bergh (1988) completed an optical survey of the remnant and determined a proper motion of 0.30 +/- 0.04 arcsec/year for an Hα filament 10(') in extent that appears just inside the northwest edge of the radio shell. If the filament is coincident with the region behind the shock front, then our projection of the total proper motion of the outer edge of the radio shell after eight years is 2.4 arcseconds. Following steps used by Strom, Goss, and Shaver (1982) and Tan and Gull (1985) for determining expansion in Tycho's SNR, we will attempt to derive the expansion rate of 1006's shell. { References l} {indent 0em Long, K. S., Blair, W. P., and van den Bergh, S. 1988, Ap.J., 333, 749. Reynolds, S. P., and Gilmore, D. M. 1986, A.J., 92, 1138. Strom, R. G., Goss, W. M., and Shaver, P. A. 1982, M.N.R.A.S., 200, 473. Tan, S. M., and Gull, S. F. 1985, M.N.R.A.S., 216, 949. }

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