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dc.contributor.authorLopez, Laura A.
dc.contributor.authorRamirez-Ruiz, Enrico
dc.contributor.authorCastro, Daniel
dc.contributor.authorPearson, Sarah
dc.date.accessioned2015-02-12T20:21:59Z
dc.date.available2015-02-12T20:21:59Z
dc.date.issued2013-02
dc.identifier.issn0004-637X
dc.identifier.issn1538-4357
dc.identifier.urihttp://hdl.handle.net/1721.1/94512
dc.description.abstractWe present results from a 220 ks observation of the Galactic supernova remnant (SNR) W49B using the Advanced CCD Imaging Spectrometer on board the Chanrda X-ray Observatory. We exploit these data to perform detailed spatially resolved spectroscopic analyses across the SNR with the aim to investigate the thermodynamic properties and explosive origin of W49B. We find substantial variation in the electron temperature and absorbing column toward W49B, and we show that the mean metal abundances are consistent with the predicted yields in models of bipolar/jet-driven core-collapse SNe. Furthermore, we set strict upper limits on the X-ray luminosity of any undetected point sources, and we exclude the presence of a neutron star associated with W49B. We conclude that the morphological, spectral, and environmental characteristics of W49B are indicative of a bipolar Type Ib/Ic SN origin, making it the first of its kind to be discovered in the Milky Way.en_US
dc.description.sponsorshipUnited States. National Aeronautics and Space Administration (NASA contract NAS8-03060)en_US
dc.description.sponsorshipSmithsonian Astrophysical Observatory (Contract SV3-73016)en_US
dc.description.sponsorshipMassachusetts Institute of Technology (MIT Pappalardo Fellowship in Physics)en_US
dc.description.sponsorshipUnited States. National Aeronautics and Space Administration (NASA, Einstein Fellowship Program, grant PF1–120085)en_US
dc.description.sponsorshipNational Science Foundation (U.S.) (NSF grant AST–0847563)en_US
dc.description.sponsorshipDavid & Lucile Packard Foundationen_US
dc.description.sponsorshipUnited States. National Aeronautics and Space Administration (NASA under contract NAS8–03060)en_US
dc.description.sponsorshipUnited States. National Aeronautics and Space Administration (Chandra Award Number GO2–13003A)en_US
dc.language.isoen_US
dc.publisherInstitute of Physics/American Astronomical Societyen_US
dc.relation.isversionofhttp://dx.doi.org/10.1088/0004-637x/764/1/50en_US
dc.rightsArticle is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.en_US
dc.sourceAmerican Astronomical Societyen_US
dc.titleTHE GALACTIC SUPERNOVA REMNANT W49B LIKELY ORIGINATES FROM A JET-DRIVEN, CORE-COLLAPSE EXPLOSIONen_US
dc.typeArticleen_US
dc.identifier.citationLopez, Laura A., Enrico Ramirez-Ruiz, Daniel Castro, and Sarah Pearson. “THE GALACTIC SUPERNOVA REMNANT W49B LIKELY ORIGINATES FROM A JET-DRIVEN, CORE-COLLAPSE EXPLOSION.” The Astrophysical Journal 764, no. 1 (January 24, 2013): 50. © 2013 American Astronomical Society.en_US
dc.contributor.departmentKavli Institute for Astrophysics and Space Researchen_US
dc.contributor.mitauthorLopez, Laura A.en_US
dc.contributor.mitauthorCastro, Danielen_US
dc.relation.journalAstrophysical Journalen_US
dc.eprint.versionFinal published versionen_US
dc.type.urihttp://purl.org/eprint/type/JournalArticleen_US
eprint.statushttp://purl.org/eprint/status/PeerRevieweden_US
dspace.orderedauthorsLopez, Laura A.; Ramirez-Ruiz, Enrico; Castro, Daniel; Pearson, Sarahen_US
dc.identifier.orcidhttps://orcid.org/0000-0002-3243-727X
mit.licensePUBLISHER_POLICYen_US


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