Imaging of SN 1993J

  • A. Alberdi
  • J.M. Marcaide
Conference paper
Part of the Springer Proceedings in Physics book series (SPPHY, volume 99)


SN 1993J has been imaged with VLBI, and its angular expansion monitored, for almost ten years. The images show shell-like radio structures with almost circular symmetry. SN 1993J expands according to models of shock excited emission. The angular expansion has a changing deceleration rate and is best modeled with two different slopes. The swept-up mass estimate at an age of 3159 days (∼0.4 M), comparable to the low-mass envelope, favors a binary scenario. The observed spectral index of SN 1993J has slowly flattened since age 1000 days onward (α has changed from −1 to −0.67 at an age of 2820 days).


Spectral Index Radio Emission Deceleration Parameter Brightness Distribution Reverse Shock 
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  1. 1.
    N. Bartel et al.: Nature 368, 610 (1994)CrossRefADSGoogle Scholar
  2. 2.
    N. Bartel et al.: Science 287, 112 (2000)CrossRefADSGoogle Scholar
  3. 3.
    N. Bartel et al.: Astrophys. J. 581, 404 (2002)CrossRefADSGoogle Scholar
  4. 4.
    M.F. Bietenholz, N. Bartel, M.P. Rupen: Astrophys. J. 368, 610 (2003)Google Scholar
  5. 5.
    R.A. Chevalier: Astrophys. J. 258, 790 (1982)CrossRefADSGoogle Scholar
  6. 6.
    R.A. Chevalier: Astrophys. J. 259, 302 (1982)CrossRefADSGoogle Scholar
  7. 7.
    C. Fransson, C.I. Björnsson: Astrophys. J. 509, 861 (1998)CrossRefADSGoogle Scholar
  8. 8.
    J.M. Marcaide et al.: IAUC 5785 (1993)Google Scholar
  9. 9.
    J.M. Marcaide et al.: IAUC 5820 (1993)Google Scholar
  10. 10.
    J.M. Marcaide et al.: Astrophys. J. Lett. 424, L25 (1994)CrossRefADSGoogle Scholar
  11. 11.
    J.M. Marcaide et al.: Nature 373, 44 (1995)CrossRefADSGoogle Scholar
  12. 12.
    J.M. Marcaide et al.: Science 270, 1475 (1995)ADSCrossRefGoogle Scholar
  13. 13.
    J.M. Marcaide et al.: Astrophys. J. Lett. 486, L31 (1997)CrossRefADSGoogle Scholar
  14. 14.
    J.M. Marcaide et al.: In: This proceedingsGoogle Scholar
  15. 15.
    G.G. Pooley, D.A. Green: IAUC 5751 (1993)Google Scholar
  16. 16.
    A.J. Mioduszewski, V.V. Dwarkadas, L. Ball: Astrophys. J. 562, 869 (2001)CrossRefADSGoogle Scholar
  17. 17.
    M.A. Pérez-Torres, A. Alberdi, J.M. Marcaide: Astron. Astrophys. 374, 997 (2001)ADSCrossRefGoogle Scholar
  18. 18.
    M.A. Pérez-Torres, A. Alberdi, J.M. Marcaide: Astron. Astrophys. 394, 71 (2002)CrossRefADSGoogle Scholar
  19. 19.
    M.P. Rupen et al.: In: Radio Emission from Galactic and Extragalactic Compact Sources-IAU Coll. 64, ed. by J.A. Zensus, G.B. Taylor, J.M. Wrobel (ASP Conf. Series, Vol. 144, 1998) pp. 353–354Google Scholar
  20. 20.
    S.D. Van Dyk et al.: Astrophys. J. Lett. 432, L115 (1994)CrossRefADSGoogle Scholar
  21. 21.
    J.C. Wheeler et al.: Astrophys. J. Lett. 417, L71 (1993)CrossRefADSGoogle Scholar
  22. 22.
    K.W. Weiler, R.A. Sramek, S.D. van Dyk, N. Panagia: IAUC 5752 (1993)Google Scholar

Copyright information

© Springer-Verlag Berlin Heidelberg 2005

Authors and Affiliations

  • A. Alberdi
    • 1
  • J.M. Marcaide
    • 2
  1. 1.IAA-CSICGranadaSpain
  2. 2.Departamento de AstronomíaUniversidad de ValenciaBurjassotSpain

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