An extended soft X-ray source in Delphinus - H2027+19

Details An extended soft X-ray source in Delphinus - H2027+19 An extended soft X-ray source in Delphinus - H2027+19

Jun 1980

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980apj...238l..77s&link_type=abstract

Astrophysical Journal, Part 2 - Letters to the Editor, vol. 238, June 1, 1980, p. L77-L80.

Astronomy and Astrophysics

Astronomy

3

Spaceborne Astronomy, Supernova Remnants, X Ray Sources, Emission Spectra, Heao 1, Hydrogen Clouds, Spectral Energy Distribution

Scientific paper

A new extended soft X-ray source has been observed with the HEAO 1 A-2 experiment. The source, H2027+19, emits primarily in the 0.16-0.4 keV band with a total flux in this band of 2 x 10 to the -11th erg/sq cm s. It is found that both simple continuum and coronal plasma models provide good fits to the observed pulse-height spectrum. The most likely physical models are either that the source is an old supernova remnant or that it is a region of enhanced soft X-ray emission surrounding an H I cloud imbedded in a coronal plasma, as suggested by Hayakawa et al. (1979) for the Lupus Loop.

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