An X-ray photometry system I: Chandra ACIS

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dc.creatorGrimm, H. -J.
dc.creatorMcDowell, J.
dc.creatorFabbiano, G.
dc.creatorElvis, M.
dc.date2008-08-27
dc.date.accessioned2026-07-07T12:15:22Z
dc.date.available2026-07-07T12:15:22Z
dc.descriptionWe present a system of X-ray photometry for the Chandra satellite. X-ray photometry can be a powerful tool to obtain flux estimates, hardness ratios, and colors unbiased by assumptions about spectral shape and independent of temporal and spatial changes in instrument characteristics. The system we have developed relies on our knowledge of effective area and the energy-to-channel conversion to construct filters similar to photometric filters in the optical bandpass. We show that the filters are well behaved functions of energy and that this X-ray photometric system is able to reconstruct fluxes to within about 20%, without color corrections, for non-pathological spectra. Even in the worst cases it is better than 50%. Our method also treats errors in a consistent manner, both statistical as well as systematic.
dc.descriptionaccepted by ApJ, 19 pages, 15 figures corresponding code available at http://hea-www.cfa.harvard.edu/~jcm/xray/index.html
dc.identifierhttps://arxiv.org/abs/0808.3718
dc.identifierhttp://arxiv.org/abs/0808.3718
dc.identifierAstrophys.J.690:128-142,2009
dc.identifierdoi:10.1088/0004-637X/690/1/128
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/211479
dc.subjectAstrophysics
dc.titleAn X-ray photometry system I: Chandra ACIS
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