A High Spectral Resolution Observation of the Soft X-ray Diffuse Background with Thermal Detectors

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dc.creatorMcCammon, D.
dc.creatorAlmy, R.
dc.creatorApodaca, E.
dc.creatorTiest, W. Bergmann
dc.creatorCui, W.
dc.creatorDeiker, S.
dc.creatorGaleazzi, M.
dc.creatorJuda, M.
dc.creatorLesser, A.
dc.creatorMihara, T.
dc.creatorMorgenthaler, J. P.
dc.creatorSanders, W. T.
dc.creatorZhang, J.
dc.creatorFigueroa-Feliciano, E.
dc.creatorKelley, R. L.
dc.creatorMoseley, S. H.
dc.creatorMushotzky, R. F.
dc.creatorPorter, F. S.
dc.creatorStahle, C. K.
dc.creatorSzymkowiak, A. E.
dc.date2002-05-02
dc.date.accessioned2026-07-07T11:28:54Z
dc.date.available2026-07-07T11:28:54Z
dc.descriptionA high spectral resolution observation of the diffuse X-ray background in the 60 - 1000 eV energy range has been made using an array of thirty-six 1 mm^2 micro-calorimeters flown on a sounding rocket. Detector energy resolution ranged from 5-12 eV FWHM, and a composite spectrum of ~ 1 steradian of the background centered at l = 90, b = +60 was obtained with a net resolution of ~ 9 eV. The target area includes bright 1/4 keV regions, but avoids Loop I and the North Polar Spur. Lines of C VI, O VII, and O VIII are clearly detected with intensities of 5.4 +/- 2.3, 4.8 +/- 0.8, and 1.6 +/- 0.4 photons cm^-2 s^-1 sr^-1, respectively. The oxygen lines alone account for a majority of the diffuse background observed in the ROSAT R4 band that is not due to resolved extragalactic discrete sources. We also have a positive detection of the Fe-M line complex near 70 eV at an intensity consistent with previous upper limits that indicate substantial gas phase depletion of iron. We include a detailed description of the instrument and its detectors.
dc.descriptionTo appear in The Astrophysical Journal
dc.identifierhttps://arxiv.org/abs/astro-ph/0205012
dc.identifierhttp://arxiv.org/abs/astro-ph/0205012
dc.identifierAstrophys.J.576:188-203,2002
dc.identifierdoi:10.1086/341727
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/196546
dc.subjectAstrophysics
dc.titleA High Spectral Resolution Observation of the Soft X-ray Diffuse Background with Thermal Detectors
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