Obs. of 2 Unidentified Gamma-ray Sources (La Palombara+, 2006)

Details Obs. of 2 Unidentified Gamma-ray Sources (La Palombara+, 2006) Obs. of 2 Unidentified Gamma-ray Sources (La Palombara+, 2006)

Oct 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006ycat..34580245l&link_type=abstract

VizieR On-line Data Catalog: J/A+A/458/245. Originally published in: 2006A&A...458..245L

Physics

Gamma Rays, X-Ray Sources, Pulsars

Scientific paper

We present the finding charts of the nine most interesting X-ray sources, which have no candidate optical counterpart within 5arcsec and are characterized by a high X-ray/optical flux ratio (i.e. greater than 100). Moreover, we report Appendixes A and B of the paper. In Appendix A we describe the source classification scheme, which is based on the X-ray/optical flux ratio and is derived from the Hamburg/RASS one, taking into account the different energy ranges of ROSAT and XMM-Newton, the different spectral models and the different optical filters. In Appendix B we describe how we calculated the fluxes, based on the optical magnitudes.
(2 data files).

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