J/A+A/705/A107ivo://CDS.VizieR/J/A+A/705/A107CDSKrivonos R.Manconi S.Arefiev V.Bykov A.Donato F.Filippova E.,Lutovinov A.Di Mauro M.Mori K.Tkachenko A.Woo J.2026-03-20T08:01:59Z2026-01-09T10:25:15ZCDS support team

CDS, Observatoire de Strasbourg, 11 rue de l'Universite, F-67000 Strasbourg, France

cds-question@unistra.frmilky-way-galaxypulsarsx-ray-sourcesThe searches for the putative large-scale X-ray halo around the Geminga pulsar have been extensively performed using various narrow field of view X-ray telescopes. In this paper we present wide-field scanning observation of Geminga with SRG/ART-XC. Our X-ray analysis covers a large area of the sky (3.5 by 3.5 degrees) of direct imaging in the 4-12keV energy band, comparable with the size of expected Geminga emission, for the first time. The ART-XC observation provides a highly uniform sky coverage without strong vignetting effects. The synchrotron X-ray halo flux is predicted from a physical model based on particle injection, diffusion and cooling over the pulsar's lifetime, and consistently including the spectral and spatial properties of the synchrotron X-ray and inverse Compton gamma-ray emissions. The model is tuned to reproduce existing multi-wavelength data coming from X-ray upper limits and GeV to TeV gamma ray observations. After taking into account the high particle background and its uncertainties, no emission is significantly found in the assumed source region, and X-ray flux upper limits are derived, which are less constraining within a factor of three with respect to existing ones obtained with narrow field of view telescopes and longer exposure times. Nonetheless, we put direct and independent constraints on the Geminga's ambient magnetic field strength compatible with other studies.2026A&A...705A.107Khttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/705/A107CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/705/A107https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/705/A107http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/705/A107https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/705/A107https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/705/A107http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/705/A107GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/705/A107/list (List of fits images (Figure 3))https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/705/A107/list?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/705/A107/list?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/705/A107/list?GETtext/xml+votable180.050000true98.4839717.778590.005555555555555556Associated datahttps://cdsarc.cds.unistra.fr/assocdata/?obs_collection=J/A+A/705/A1076/23952https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/705/A107?format=asciiX-rayRadiodefaultJ/A+A/705/A107/listList of fits images (Figure 3)recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintRAJ2000Right Ascension of center (J2000)degpos.eq.ra;meta.mainDEJ2000Declination of center (J2000)degpos.eq.dec;meta.mainNxNumber of pixels along X-axismeta.numberintNyNumber of pixels along Y-axismeta.numberintObs.dateObservation datestime.epoch;obsnullablesizeSize of FITS fileKibytephys.size;meta.fitsintFileNameName of FITS file, in subdirectory fitsmeta.id;meta.fitscharTitleTitle of the FITS filemeta.title;meta.fitschar