The ROSAT HRI Point Spread Function

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dc.creatorPredehl, Peter
dc.creatorPrieto, Almudena
dc.date2001-09-28
dc.date.accessioned2026-07-07T02:00:24Z
dc.date.available2026-07-07T02:00:24Z
dc.descriptionA sample of the brightest point-like sources observed with the ROSAT-HRI were analysed to asses on the intrinsic shape of the ROSAT-HRI Point Spread Function (PSF). Almost all of the HRI observations collected during the ROSAT lifetime are found to be artificially broadened by factors up two ~2 due to residual errors in the ROSAT aspect solution. After correction by departing pointing positions, the width of the core of the PSF is found to be less than 5 arcsec (half energy width, HEW). On the basis of these results, an improved analytical representation of the ROSAT-HRI PSF is provided. However, for most of the new observations the source countrate is too weak to allow reliable recovering pf the ROSAT-HRI resolution. Therefore, a series of examples (data, correction, and theoretical PSF) are given in order to help the ROSAT user in determining whether "his/her source" is extended or not.
dc.description12 pages, 13 figures. Document registred at the MPE/ROSAT web site: http://wave.xray.mpe.mpg.de/rosat/calibration/hri/psf References to this document should indicated the above web address
dc.identifierhttps://arxiv.org/abs/astro-ph/0109542
dc.identifierhttp://arxiv.org/abs/astro-ph/0109542
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/3419
dc.subjectAstrophysics
dc.titleThe ROSAT HRI Point Spread Function
dc.typetext

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