Multi-wavelength observations of high energy sources

Details Multi-wavelength observations of high energy sources Multi-wavelength observations of high energy sources

Jul 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009mavo.proc...19m&link_type=abstract

Multi-wavelength Astronomy and Virtual Observatory, Proceedings of the EURO-VO Workshop, held at the European Space Astronomy Ce

Astronomy and Astrophysics

Astronomy

Virtual Observatory

Scientific paper

Gathering large sets of clean multi-wavelength measurements on specific classes of astrophysical objects or conversely, unveiling rare outliers, both first require a careful handling of the cross-identification process, taking into account positional errors and probabilities of spurious matches. Most high energy telescopes offer significantly lower spatial resolution than those operating at optical or infrared wavelengths. This can lead to confusion issues particularly in regions of high optical and infrared source densities such as in the Galactic plane. We review here the elementary steps leading to a statistically controlled identification and classification of X-ray sources and illustrate these methods and related problems with some examples extracted from the work carried out by the Survey Science Center of the XMM-Newton satellite. We then list some functionality and interoperability requirements on a few basic VO tools which would ease the proper identification and subsequent classification of high energy sources and, in general, facilitate the computation of the reliabilities of the cross-identifications of sources in pairs of catalogues collected at any wavelengths.

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