Optical emission from a fast shock wave: The remnants of Tycho's supernova and SN 1006
Journal Article
·
· Astrophys. J., Lett.; (United States)
The faint optical filaments in Tycho's supernova remnant appear to be emission from a shock front moving at 5600 km s/sup -1/. The intensity of the hydrogen lines, the absence of forbidden lines of heavy elements in the spectrum, and the width of the filaments are explained by a model in which a collisionless shock wave is moving into partially neutral gas. The presence of the neutral gas can be used to set an upper limit of approximately 5 x 10/sup 47/ ergs to the energy in ionizing radiation emitted by a Type I supernova. The patchy neutral gas is probably part of the warm neutral component of the interstellar medium. The existing information on the remnant of SN 1006 indicates that its emission is similar in nature to that from Tycho's remnant.
- Research Organization:
- Kitt Peak National Observatory
- OSTI ID:
- 6879072
- Journal Information:
- Astrophys. J., Lett.; (United States), Journal Name: Astrophys. J., Lett.; (United States) Vol. 225:1; ISSN AJLEA
- Country of Publication:
- United States
- Language:
- English
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