The spectrum of Tycho's supernova remnant

Details The spectrum of Tycho's supernova remnant The spectrum of Tycho's supernova remnant

Jul 1978

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1978a%26a....67..267k&link_type=abstract

Astronomy and Astrophysics, vol. 67, no. 2, July 1978, p. 267-271.

Astronomy and Astrophysics

Astrophysics

33

Stellar Spectra, Supernova Remnants, X Ray Sources, Absorption Spectra, Electron Density (Concentration), Electron Energy, Forbidden Transitions

Scientific paper

The optical spectrum of filaments in Tycho's supernova remnant shows only H-alpha and H-beta emission over the wavelength range 4700-8000 A. It is suggested that the optical filaments producing this emission may be density enhancements at a temperature near 100,000 K. Even though nonequilibrium processes are considered which can lead to much lower electron temperatures than equilibrium models, it does not seem possible to reconcile the 21-cm absorption data, the optical proper motions, and the optical surface brightness.

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