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Young Supernovae and SNRs

Young Supernovae and SNRs. Miguel A. Perez-Torres Istituto di Radioastronomia, Bologna 16 January 2002, Bologna. Radio Supernovae. Low resolution + sensitivity limitations have limited number of studied supernovae > 20 Sne detected with the VLA....

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Young Supernovae and SNRs

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  1. Young Supernovae and SNRs Miguel A. Perez-Torres Istituto di Radioastronomia, Bologna 16 January 2002, Bologna

  2. Radio Supernovae • Low resolution + sensitivity limitations have limited number of studied supernovae • > 20 Sne detected with the VLA.... but few mapped with VLBI: SN1979C, SN1986J, SN1993J

  3. Type II SN 1979C M100 SN 1980K Type II b SN 1993J M81 Type Ib/c SN 1983N SN 1990B Type II n SN 1986Jin NGC891 SN 1988Z Radio Supernovae

  4. VLBI observations provide a measure of the interaction with the CSM If not self-similarity, then hydrodynamics is needed Minishell model

  5. RSNe: properties • Non-thermal synchrotron emission with high-brightness temperature • External thermal absorption => • Flux density evolution

  6. Physics from RSN studies • Interaction properties of shock/CSM interaction: clumps, shell,…. • Shock front structure, R-T instabilities, particle acceleration mechanism/site,.... • Progenitor system: binary, massive, wind properties

  7. VLBI observations of SNe

  8. SN 1979C in M100

  9. Very early detection D=3.6 Mpc H_alpha emission -> Type II Shell structure (Marcaide et al. 1995a) Expansion of SN1993J (Marcaide et al. 1995b) Deceleration of SN1993J (Marcaide et al. 1997) SN1993J in M81

  10. VLBI observations of SN1986J (Perez-Torres et al. 2002)

  11. VLBI / VLBI+SKA / SKA++

  12. SKA would make possible to look for... • R-T instabilities • Anisotropies in the CSM around SNe • Particle acceleration mechanism in SNe • Detection of luminous RSNeup to z=1 • Detection of Type Ia RSN • RSN distance determinations • Statistical studies of Ib/c, II

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