Spatial structure of the diffuse soft X-ray background

Computer Science – Sound

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Background Radiation, Diffuse Radiation, Rocket Sounding, Sky Radiation, X Rays, Contamination, Galactic Radiation, Sky Surveys (Astronomy), Stellar Radiation, Supernovae

Scientific paper

Data from the ten sounding rocket flights of the Wisconsin soft X-ray sky survey are presented in the form of maps of the sky in galactic coordinates in seven independent energy bands, with coverage of 98% of the sky. Final experimental calibrations and interflight normalizations are included. Features in the X-ray maps are discussed, and the spatial structure in the B(0.1.0.188keV), C(0.15.0.284 keV) and M(0.46.1.17keV) bands is analyzed. The structure in the B and C bands is probably not due to absorption by neutral gas of X-rays produced in a galactic halo. There is no evidence of an X-ray emitting galactic halo in the M band, either. The structure of the X-ray sky at energies between 0.1 and 1.0 keV is shown to be consistent with production by a combination of steller X-ray emission; supernova (SN) cavities, including the one surrounding the Sun; and an extrapolation of the high energy diffuse background. The B and C band X-rays are produced almost entirely in the local SN cavity.

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