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A FLARE IN THE JET OF PICTOR A

dc.contributor.authorHardcastle, M. J.
dc.contributor.authorBirkinshaw, M.
dc.contributor.authorCroston, J. H.
dc.contributor.authorEvans, Daniel A.
dc.contributor.authorLandt, H.
dc.contributor.authorLenc, Emil
dc.contributor.authorMassaro, F.
dc.contributor.authorPerlman, E. S.
dc.contributor.authorSchwartz, D. A
dc.contributor.authorSiemiginowska, A.
dc.contributor.authorStawarz, L.
dc.contributor.authorUrry, C. M.
dc.contributor.authorWorrall, D. M.
dc.contributor.authorMarshall, Herman
dc.date.accessioned2015-03-04T18:21:22Z
dc.date.available2015-03-04T18:21:22Z
dc.date.issued2010-05
dc.date.submitted2010-02
dc.identifier.issn2041-8205
dc.identifier.issn2041-8213
dc.identifier.urihttp://hdl.handle.net/1721.1/95807
dc.description.abstractA Chandra X-ray imaging observation of the jet in Pictor A showed a feature that appears to be a flare that faded between 2000 and 2002. The feature was not detected in a follow-up observation in 2009. The jet itself is over 150?kpc long and about 1 kpc wide, so finding year-long variability is surprising. Assuming a synchrotron origin of the observed high-energy photons and a minimum energy condition for the outflow, the synchrotron loss time of the X-ray emitting electrons is of order 1200 years, which is much longer than the observed variability timescale. This leads to the possibility that the variable X-ray emission arises from a very small sub-volume of the jet, characterized by a magnetic field that is substantially larger than the average over the jet.en_US
dc.description.sponsorshipPoland. Ministry of Science and Higher Education (grant N-N203-380336)en_US
dc.description.sponsorshipSmithsonian Astrophysical Observatory (SAO contract NAS 8-39073)en_US
dc.description.sponsorshipChandra X-ray Center (U.S.) (contract NAS8-03060)en_US
dc.description.sponsorshipSmithsonian Astrophysical Observatory (SAO contract SV3-73016)en_US
dc.language.isoen_US
dc.publisherInstitute of Physics/American Astronomical Societyen_US
dc.relation.isversionofhttp://dx.doi.org/10.1088/2041-8205/714/2/l213en_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.titleA FLARE IN THE JET OF PICTOR Aen_US
dc.typeArticleen_US
dc.identifier.citationMarshall, H. L., M. J. Hardcastle, M. Birkinshaw, J. Croston, D. Evans, H. Landt, E. Lenc, et al. “A FLARE IN THE JET OF PICTOR A.” The Astrophysical Journal 714, no. 2 (April 13, 2010): L213–L216. © 2010 American Astronomical Society.en_US
dc.contributor.departmentMIT Kavli Institute for Astrophysics and Space Researchen_US
dc.contributor.mitauthorMarshall, Herman Leeen_US
dc.contributor.mitauthorEvans, Daniel A.en_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.orderedauthorsMarshall, H. L.; Hardcastle, M. J.; Birkinshaw, M.; Croston, J.; Evans, D.; Landt, H.; Lenc, E.; Massaro, F.; Perlman, E. S.; Schwartz, D. A.; Siemiginowska, A.; Stawarz, Ł.; Urry, C. M.; Worrall, D. M.en_US
mit.licensePUBLISHER_POLICYen_US
mit.metadata.statusComplete


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