SVOM-ECLAIRs known X-ray sources catalogue J/A+A/645/A18 ivo://CDS.VizieR/J/A+A/645/A18 doi:10.26093/cds/vizier.36450018 CDS Dagoneau N. Schanne S. Rodriguez J. Atteia J.-L. Cordier B. 2022-11-28T13:03:19Z 2020-12-23T10:07:18Z CDS support team CDS, Observatoire de Strasbourg, 11 rue de l'Universite, F-67000 Strasbourg, France cds-question@unistra.fr x-ray-sources spectroscopy The SVOM mission currently under development will carry various instruments, and in particular the coded-mask telescope ECLAIRs, with a large field of view of about 2sr, operating in the 4-150keV energy band. The main goal of ECLAIRs is to detect high-energy transients such as gamma-ray bursts. Its onboard trigger software will search for new hard X-ray sources appearing in the sky, as well as peculiar behaviour (e.g. strong outbursts) from known sources, in order to repoint the satellite to perform follow-up observations with its onboard narrow-field-of-view instruments. The presence of known X-ray sources must be disentangled from the appearance of new sources. This is done with the help of an onboard source catalogue, which we present in this paper. As an input we use catalogues of X-ray sources detected by Swift/BAT and MAXI/GSC and we study the influence of the sources on ECLAIRs' background level and on the quality of the sky-image reconstruction process. We show that the influence of the sources depends on the pointing direction on the sky, on the energy band, and on the exposure time. In the Galactic centre, the contribution from known sources largely dominates the cosmic X-ray background, which is, on the contrary, the main background in sky regions lacking strong sources. We also demonstrate the need to clean the contributions of these sources in order to maintain a low noise level in the sky images and to maintain a low threshold for the detection of new sources without introducing false triggers. We briefly describe one of our cleaning methods and its challenges. Finally, we present the overall structure of the onboard catalogue and the way it will be used to perform the source cleaning and disentangle detections of new sources from outbursts of known sources. 2021A&A...645A..18D https://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/645/A18 Catalog Research IsServedBy TAP VizieR generic service IsServedBy Conesearch service related-to J/ApJS/235/4 : The 105-month Swift-BAT all-sky hard X-ray survey (Oh+, 2018) https://cds.unistra.fr/vizier-org/licences_vizier.html https://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/645/A18 https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/645/A18 http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/645/A18 https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/645/A18 https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/645/A18 http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/645/A18 GET text/xml+votable https://tapvizier.cds.unistra.fr/TAPVizieR/tap Cone search capability for table J/A+A/645/A18/table (Table of all 1793 sources) https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/645/A18/table? https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/645/A18/table? http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/645/A18/table? 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41014 41020 41059 41087 41135-41136 41279 41303 41326 41384 41396 41399 41404 41416 41423 41435 41446 41499 41522 41524 41530 41559-41560 41583 41586 41594 41596 41599 41647 41653-41654 41662 41670 41674 41679 41681 41683 41685 41697 41736 41738 41754 41758 41760 41767-41768 41773 41797-41799 41802 41809-41810 41813-41814 41823 41873 41876 41929 41938 41982 42003 42005 42009 42012 42016 42018 42027 42083 42099 42120 42140 42150 42159 42163 42167 42169 42172 42174 42179 42189 42194 42196 42207 42210-42211 42214-42215 42217 42221 42224 42228-42229 42248 42294 42315 42336 42347 42364-42365 42370 42378 42384 42387 42392-42393 42396-42397 42401 42417 42434 42446 42451 42453-42454 42464 42467-42468 42483 42485 42491 42493 42528 42533 42547 42666 42669 42704 42743 42784 42808 42822 42825 42841 42852 42901 42911 42947 42956 43009 43020 43024 43049 43057 43064 43078 43104-43106 43139 43233 43242 43262 43294 43321 43339 43359 43366 43412 43452 43471 43520 43544 43546 43625 43627 43632 43634 43649 43667 43677 43695 43722 43768 43782 43806 43825 43833 43838 43849 43860 43877 43887 43947 43971 43977 43983 44017 44094 44128 44247 44448 44507 44517 44526 44551 44650 44660 44668 44698 44722 44785 44790 44892 44897 44908 45046 45075 45178 45202 45220 45222 45258 45263 45446 45490 45500 45693 45735 45738 45757 45774 45779 45855 45883 45910 45977 45984-45985 46005 46013 46055 46101 46103 46124 46191 46280-46281 46324 46399 46424 46544 46615 46709 46755 46811 46815 46831 46847 46865 46924 46926 46987 47014 47016 47027 47047 47064 47074 47083 47120 47141 47154 47162 47169 47222 47232 47245 47249 47253 47259 47308 47375 47473 47534 47597 47648 47673 47731 47747 47786 47805 47866 47971 48022-48023 48034 48263 48293 48321 48374-48375 48394 48491 48610 48614 48676 48712 48798 48846 49001 49004 49042 49048 49061 https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/645/A18?format=ascii X-ray default J/A+A/645/A18/table Table of all 1793 sources recno Record number assigned by the VizieR team. Should Not be used for identification. meta.record int Name Source name (1) meta.id;meta.main char SimbadMainId Source main ID in CDS meta.id char BAT105mId ? Source ID in Oh et al., 2018, J/ApJS/235/4 meta.id int nullable RAJ2000 Right ascension (J2000) deg pos.eq.ra;meta.main DEJ2000 Declination (J2000) deg pos.eq.dec;meta.main Sp [BP ] Spectrum model (2) stat.param;meta.modelled char Elow [4/14] Low energy bound keV em.energy int Ehigh [20/150] High energy bound keV em.energy int K Normalisation (3) ph.cm**-2.s**-1.keV**-1 stat.fit.param double alpha Low energy photon index spect.index double beta ? High energy photon index (only for Sp=BP) spect.index double nullable Ex ? Energy break (only for Sp=BP) keV em.energy double nullable fitErr ? Fit quadratic error (4) stat.error;stat.fit.param double nullable chi2r Fit reduced chi square (5) stat.fit.chi2 double NptsFit Number of fitted points (6) meta.number int F2-4 ? MAXI/GSC median flux in 2-4keV ph.cm**-2.s**-1 phot.flux;em.X-ray.hard;stat.median double nullable e_F2-4 ? MAXI/GSC median flux error in 2-4keV ph.cm**-2.s**-1 stat.error double nullable F4-10 ? MAXI/GSC median flux in 4-10keV ph.cm**-2.s**-1 phot.flux;em.X-ray.hard;stat.median double nullable e_F4-10 ? MAXI/GSC median flux error in 4-10keV ph.cm**-2.s**-1 stat.error double nullable F10-20 ? MAXI/GSC median flux in 10-20keV ph.cm**-2.s**-1 phot.flux;em.X-ray.hard double nullable e_F10-20 ? MAXI/GSC median flux error in 10-20keV ph.cm**-2.s**-1 stat.error double nullable F14-20 ? Swift/BAT survey flux in 14-20keV ph.cm**-2.s**-1 phot.flux;em.X-ray.hard double nullable e_F14-20 ? Swift/BAT survey flux error in 14-20keV ph.cm**-2.s**-1 stat.error double nullable F20-24 ? Swift/BAT survey flux in 20-24keV ph.cm**-2.s**-1 phot.flux;em.X-ray.hard double nullable e_F20-24 ? Swift/BAT survey flux error in 20-24keV ph.cm**-2.s**-1 stat.error double nullable F24-35 ? Swift/BAT survey flux in 24-35keV ph.cm**-2.s**-1 phot.flux;em.X-ray.hard double nullable e_F24-35 ? Swift/BAT survey flux error in 24-35keV ph.cm**-2.s**-1 stat.error double nullable F35-50 ? Swift/BAT survey flux in 35-50keV ph.cm**-2.s**-1 phot.flux;em.X-ray.hard double nullable e_F35-50 ? Swift/BAT survey flux error in 35-50keV ph.cm**-2.s**-1 stat.error double nullable F50-75 ? Swift/BAT survey flux in 50-75keV ph.cm**-2.s**-1 phot.flux;em.X-ray.hard double nullable e_F50-75 ? Swift/BAT survey flux error in 50-75keV ph.cm**-2.s**-1 stat.error double nullable F75-100 ? Swift/BAT survey flux in 75-100keV ph.cm**-2.s**-1 phot.flux;em.X-ray.hard double nullable e_F75-100 ? Swift/BAT survey flux error in 75-100keV ph.cm**-2.s**-1 stat.error double nullable F100-150 ? Swift/BAT survey flux in 100-150keV ph.cm**-2.s**-1 phot.flux;em.gamma.soft double nullable e_F100-150 ? Swift/BAT survey flux error in 100-150keV ph.cm**-2.s**-1 stat.error double nullable F150-195 ? Swift/BAT survey flux in 150-195keV ph.cm**-2.s**-1 phot.flux;em.gamma.soft double nullable e_F150-195 ? Swift/BAT survey flux error in 150-195keV ph.cm**-2.s**-1 stat.error double nullable