An observational approach to a problem of filament formation in old supernova remnants

Details An observational approach to a problem of filament formation in old supernova remnants An observational approach to a problem of filament formation in old supernova remnants

Mar 1978

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1978a%26a....64..123l&link_type=abstract

Astronomy and Astrophysics, vol. 64, no. 1-2, Mar. 1978, p. 123-126.

Astronomy and Astrophysics

Astrophysics

5

H Alpha Line, Interstellar Gas, Shock Waves, Supernova Remnants, Brightness, Fabry-Perot Interferometers, Filaments, Shock Heating, X Ray Spectra

Scientific paper

The interaction between the blast wave and inhomogeneities in the interstellar medium is a possible source of the formation of optical filaments in old supernova remnants. In order to check this theoretical model the correlation between integral brightness and the halfwidth of the H-alpha line in filaments of Simeiz 147 and VRO 42.05.01 were investigated. The observations were carried out with a high contrast Fabry-Perot etalon and a contact image converter. The velocities of the radiatively cooling shock waves propagating into the inhomogeneities were estimated to be about 20 to 180 km/sec in all supernova remnants previously investigated by the author.

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