J/A+A/707/A278ivo://CDS.VizieR/J/A+A/707/A278CDSSunyaev R.Khabibullin I.Churazov E.Gilfanov M.Medvedev P.,Sazonov S.2026-04-02T06:28:33Z2026-03-23T10:01:40ZCDS support team

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

cds-question@unistra.frx-ray-binary-starsquasarsThe Galactic microquasar SS 433 and the radio nebula W50 surrounding it present a prototypical example of a hyper-Eddington binary system shaping its ambient interstellar medium via energetic outflows. In this paper, we present X-ray observations of the SS 433/W50 complex by the eROSITA telescope onboard the SRG space observatory. These data provide images of the entire nebula characterized by a very large dynamic range and allow spectral analysis of the diffuse X-ray emission. In particular, these data illustrate a close connection between the thermal and non-thermal components of W50 on scales ranging from sub-parsecs, represented by narrow X-ray bright filaments, to the entire extent of >~100pc of the nebula. These data also allowed us to fully characterize a pair of nearly symmetric, sharp-edged, elongated structures aligned with the orbital axis of the binary system, which lack radio counterparts but are prominent in very-high-energy gamma-ray emission. The resulting multifaceted picture of the interaction between energetic outflows and the surrounding medium paves the way for future focused multiwavelength observations and dedicated numerical simulations.2026A&A...707A.278Shttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/707/A278CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/AZh/78/922 : Radio emission of SS433 (Trushkin+, 2001)J/PAZh/23/341 : BVR observations of SS 433 (Irsmambetova 1997)J/PAZh/37/120 : Fast optical variability of SS 433 (Burenin+, 2011)J/other/PZ/31.5 : SS 433 UBVRI light curves (Goranskij, 2011)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/707/A278https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/707/A278http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/707/A278https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/707/A278https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/707/A278http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/707/A278GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/707/A278/list (Informations on fits image)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/707/A278/list?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/707/A278/list?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/707/A278/list?GETtext/xml+votable180.050000true288.111644.981170.0055555555555555566/30507https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/707/A278?format=asciiX-raydefaultJ/A+A/707/A278/listInformations on fits imagerecnoRecord 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.numberintsizeSize of FITS fileKibytephys.size;meta.fitsintFileNameName of FITS file, in subdirectory fitsmeta.id;meta.fitscharTitleTitle of the FITS filemeta.title;meta.fitschar