Book contents
- Frontmatter
- Contents
- Participants
- Preface
- Acknowledgements
- Observations of Supernovae and the Cosmic Distance Scale
- Type Ia Supernovae
- Type Ib and Type II Supernovae
- SN 1987A, SN 1993J, and Other Supernovae
- Supernovae and Circumstellar Matter
- Radio Supernovae
- The SN 1987A Environment
- Radio Emission from SN 1987A
- Interaction of Supernova Ejecta with Circumstellar Matter and X-Ray Emission: SN 1987A & SN 1993J
- Supernova Remnants
- Catalogues
- List of Contributed Papers
Interaction of Supernova Ejecta with Circumstellar Matter and X-Ray Emission: SN 1987A & SN 1993J
from Supernovae and Circumstellar Matter
Published online by Cambridge University Press: 04 August 2010
- Frontmatter
- Contents
- Participants
- Preface
- Acknowledgements
- Observations of Supernovae and the Cosmic Distance Scale
- Type Ia Supernovae
- Type Ib and Type II Supernovae
- SN 1987A, SN 1993J, and Other Supernovae
- Supernovae and Circumstellar Matter
- Radio Supernovae
- The SN 1987A Environment
- Radio Emission from SN 1987A
- Interaction of Supernova Ejecta with Circumstellar Matter and X-Ray Emission: SN 1987A & SN 1993J
- Supernova Remnants
- Catalogues
- List of Contributed Papers
Summary
We perform hydrodynamical calculations of the collision between the supernova ejecta and circumstellar matter for SN 1987A and SN 1993J. For SN 1987A we predict light curves of X-ray emissions from the shocked ring. For SN 1993J, thermal X-rays from the shocked circumstellar matter can consistently account for the observations with ROSAT, ASCA, and OSSE.
Introduction
The supernova ejecta collides with the circumstellar matter (CSM) if its progenitor was undergoing significant mass loss. Shock waves arising from this collision compress and heat the ejecta and the CSM. The emission from the shocked material strongly depends on the density distributions of the ejecta and the CSM, thereby providing important information about the nature of the CSM.
SN 1987A
The images from the European Southern Observatory (ESO) (Wampler et al. 1990) and the Hubble Space Telescope (HST) (Jakobsen et al. 1991) revealed the presence of a ring-like structure at ∼ 6 × 1017 cm from SN 1987A. The outermost part of the supernova ejecta is expanding at ∼ 104 km s−1 (Shigeyama & Nomoto 1990), thus being expected to collide with the ring at ∼ 10 years after the explosion.
Hydrodynamical model
The progenitor of SN 1987A had once become a red supergiant (RSG) and then contracted to a blue supergiant (BSG) before the explosion (for reviews, see Arnett et al. 1989, Hillebrandt & Höflich 1989, Podsiadlowski 1992, and Nomoto et al. 1993a).
- Type
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- Information
- Supernovae and Supernova RemnantsIAU Colloquium 145, pp. 317 - 322Publisher: Cambridge University PressPrint publication year: 1996