Hostname: page-component-78c5997874-4rdpn Total loading time: 0 Render date: 2024-11-03T00:51:00.218Z Has data issue: false hasContentIssue false
  • English
  • Français

Luminous Supernova Remnant Candidates in M82 and The Physical Properties of The Variable Radio Source 41.9+58

Published online by Cambridge University Press:  04 August 2017

P. P. Kronberg  and
P. Biermann
P. P. Kronberg
Affiliation:
David Dunlap Observatory and Scarborough College, University of Toronto
P. Biermann
Affiliation:
Max-Planck-Institut für Radioastronomie, Bonn

Abstract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

Large numbers (∼30) of supernova remnant candidates have been revealed in new VLA maps of the inner 600 pc of M82 with subarcsecond resolution. The flux density decrease of the bright source 41.9+58 in the M82 nuclear region is found to be occurring with an approximately constant spectral index of −0.9 at ν≳3 GHz, and the low frequency turnover has moved from ∼700 MHz in 1974–1975 to <400 MHz in 1979–81.

A model of 41.9+58 is proposed in which it is, at least initially confined by its own hot (∼108K) pre-SN ejecta, and its relativistic particles are accelerated by a pulsar at its centre.

Type
VI. Supernova Remnants in Other Galaxies
Information
Symposium - International Astronomical Union , Volume 101: Supernova Remnants and Their X-Ray Emission , 1983 , pp. 583 - 590
Copyright
Copyright © Reidel 1983 

References

Bash, F.N., 1968, Astrophys. J. (Suppl.) 16, pp. 373–404.CrossRefGoogle Scholar
Brown, R.L., and Neff, S.G., Astrophys. J., 241, pp. 561–566.CrossRefGoogle Scholar
Geldzahler, B.J., Kellermann, K.I., Shaffer, D.B., and Clark, B.G., 1977, Astrophys. J. (Letters) 215, pp. L5–L6.CrossRefGoogle Scholar
Griffiths, R.E. Highlights of Astronomy, 1980, 5, pp. 641–651.CrossRefGoogle Scholar
Jones, D.L., Sramek, R.A., and Terzian, Y., 1981, Astrophys. J. 246, pp. 28–37.CrossRefGoogle Scholar
Kronberg, P.P., Pritchet, C.J. and van den Bergh, S. 1972, Astrophys. J. (Letters), 173, pp. L47–L50.CrossRefGoogle Scholar
Kronberg, P.P., and Wilkinson, P.N., 1975, Astrophys. J. 200, pp. 430–438.CrossRefGoogle Scholar
Kronberg, P.P., and Clarke, J.N., 1978, Astrophys. J. (Letters), 224, pp. L51–L54.CrossRefGoogle Scholar
Kronberg, P.P., Biermann, P., Schwab, F., 1981, Astrophys. J. 246, pp. 751–760.CrossRefGoogle Scholar
Kronberg, P.P., Biermann, P., and Schwab, F., 1983 in preparation.Google Scholar
O'Connell, R.W., and Mangano, J.J., 1978, Astrophys. J. 221, pp. 62–79.CrossRefGoogle Scholar
Weiler, K.W., van der Hulst, J.M., Sramek, R.A., and Panagia, N., 1981, Astrophys. J. (Letters) 243, pp. L151–L156.CrossRefGoogle Scholar