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They are probably on their first passage on an infalling orbit towards our Galaxy<jats:sup>1<\/jats:sup> and trace the continuing dynamics of the Local Group<jats:sup>2<\/jats:sup>. Recent measurements of a high mass for the LMC (<jats:italic>M<\/jats:italic><jats:sub>halo<\/jats:sub>\u2009\u2248\u200910<jats:sup>11.1\u201311.4<\/jats:sup>\u2009<jats:italic>M<\/jats:italic><jats:sub>\u2299<\/jats:sub>)<jats:sup>3\u20136<\/jats:sup> imply that the LMC should host a Magellanic Corona: a collisionally ionized, warm-hot gaseous halo at the virial temperature (10<jats:sup>5.3\u20135.5<\/jats:sup>\u2009K) initially extending out to the virial radius (100\u2013130\u2009kiloparsecs (kpc)). Such a corona would have shaped the formation of the Magellanic Stream<jats:sup>7<\/jats:sup>, a tidal gas structure extending over 200\u00b0 across the sky<jats:sup>2,8,9<\/jats:sup> that is bringing in metal-poor gas to the Milky Way<jats:sup>10<\/jats:sup>. Here we show evidence for this Magellanic Corona with a potential direct detection in highly ionized oxygen (O<jats:sup>+5<\/jats:sup>) and indirectly by means of triply ionized carbon and silicon, seen in ultraviolet (UV) absorption towards background quasars. We find that the Magellanic Corona is part of a pervasive multiphase Magellanic circumgalactic medium (CGM) seen in many ionization states with a declining projected radial profile out to at least 35\u2009kpc from the LMC and a total ionized CGM mass of log<jats:sub>10<\/jats:sub>(<jats:italic>M<\/jats:italic><jats:sub>H\u2009II,CGM<\/jats:sub>\/<jats:italic>M<\/jats:italic><jats:sub>\u2299<\/jats:sub>)\u2009\u2248\u20099.1\u2009\u00b1\u20090.2. The evidence for the Magellanic Corona is a crucial step forward in characterizing the Magellanic group and its nested evolution with the Local Group.<\/jats:p>","DOI":"10.1038\/s41586-022-05090-5","type":"journal-article","created":{"date-parts":[[2022,9,28]],"date-time":"2022-09-28T16:04:30Z","timestamp":1664381070000},"page":"915-918","update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":42,"title":["Observations of a Magellanic Corona"],"prefix":"10.1038","volume":"609","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-7955-7359","authenticated-orcid":false,"given":"Dhanesh","family":"Krishnarao","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-0724-4115","authenticated-orcid":false,"given":"Andrew J.","family":"Fox","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-2676-8344","authenticated-orcid":false,"given":"Elena","family":"D\u2019Onghia","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Bart P.","family":"Wakker","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-4237-3553","authenticated-orcid":false,"given":"Frances H.","family":"Cashman","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"J. 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