X-ray haloes around supernova remnants

Abstract

Recent observations of the Cas-A supernova remnant have shown X-ray emissions not only from the interior, but also from a fainter ‘halo’ extending beyond what is normally regarded as the outer boundary, or shock front1. We suggest here that this may be due to the diffusion of energetic, charged particles out of the remnant giving rise to precursor structure of the type predicted by the theory of diffusive shock acceleration. If this is the case we are seeing thermal emission from ambient gas heated by compression and wave dissipation.

Access options

Rent or Buy article

Get time limited or full article access on ReadCube.

from$8.99

All prices are NET prices.

References

  1. 1

    Stewart, G. C. et al. Supernova Remnants and their X-ray Emission, IAU Symp. No. 101, 59 (1983).

  2. 2

    Ginzburg, V. L. Phil. Trans. R. Soc. A277, 463, (1974).

  3. 3

    Fermi, E. Phys. Rev. 75, 1169 (1949).

  4. 4

    Krimsky, G. F. Dokl. Akad. Nauk SSSR 234, 1306 (1977).

  5. 5

    Axford, W. I. et al. Proc. 15th int. Cosmic Ray Conf., Plovdiv, 11, 132 (1977).

  6. 6

    Bell, A. R. Mon. Not. R. astr. Soc. 182, 147 (1978a).

  7. 7

    Bell, A. R. Mon. Not. R. astr. Soc. 182, 443 (1978b).

  8. 8

    Blandford, R. D. & Ostriker, J. P. Astrophys. J. Lett. 221, L29, (1978).

  9. 9

    Blandford, R. D. La Jolla. AIP Conf. Proc. 56, 335 (1979).

  10. 10

    Axford, W. I. Ann. N.Y. Acad. Sci. 375, 297 (1981).

  11. 11

    Drury, L.O'C. Rep. Prog. Phys. 46, 973 (1983).

  12. 12

    Drury, L.O'C. & Völk, H. J. Astrophys. J. 248, 344 (1981).

  13. 13

    McKenzie, J. F. & Völk, H. J. Astr. Astrophys. 116, 191 (1982).

  14. 14

    Völk, H. J. et al. Astr. Astrophys. 130, 19 (1984).

  15. 15

    Völk, H. J. & McKenzie, J. F. Proc. 17th Int. Cosmic Ray Conf., Paris 9, 246 (1981).

  16. 16

    Chevalier, R. Astrophys. J. 272, 765 (1983).

Download references

Author information

Rights and permissions

Reprints and Permissions

About this article

Cite this article

Morfill, G., O'C Drury, L. & Aschenbach, B. X-ray haloes around supernova remnants. Nature 311, 358–359 (1984) doi:10.1038/311358a0

Download citation

Further reading

Comments

By submitting a comment you agree to abide by our Terms and Community Guidelines. If you find something abusive or that does not comply with our terms or guidelines please flag it as inappropriate.