ULS: An Upper Limit Server for X-ray and Gamma-ray Astronomy

Details ULS: An Upper Limit Server for X-ray and Gamma-ray Astronomy ULS: An Upper Limit Server for X-ray and Gamma-ray Astronomy

Jul 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011aspc..442..567s&link_type=abstract

Astronomical Data Analysis Software and Systems XX. ASP Conference Proceedings, Vol. 442, proceedings of a Conference held at Se

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Scientific paper

Catalogs of sources discovered in high-energy, X-ray and Gamma-ray, observations exist for all the major missions and are well supported by the Virtual Observatory (VO) and specific sites such as HEASARC and LEDAS. It is much more difficult for an astronomer to find the upper limit to the flux at a position where no source was detected. Here, we present a web-based tool, which performs an on-the-fly calculation of the upper-limit, using images extracted from archives that support the Simple Image Access Protocol (SIAP). It is designed to work in a mission-independent manner on any photon counts image. Currently, XMM-Newton slew and XMM-Newton pointed data are supported. Extensions to other missions such as ROSAT, Chandra and INTEGRAL are planned.

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