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dc.contributor.authorMarshall, H.L.
dc.contributor.authorHardcastle, M.J.
dc.contributor.authorBirkinshaw, M.
dc.contributor.authorCroston, J.H.
dc.contributor.authorEvans, D.
dc.contributor.authorLandt, H.
dc.contributor.authorLenc, E.
dc.contributor.authorMassaro, F.
dc.contributor.authorPerlman, E.
dc.contributor.authorSchwartz, D.A.
dc.contributor.authorSiemiginowska, A.
dc.contributor.authorStawarz, L.
dc.contributor.authorUrry, C.M.
dc.contributor.authorWorrall, D.M.
dc.date.accessioned2011-12-19T16:01:25Z
dc.date.available2011-12-19T16:01:25Z
dc.date.issued2010
dc.identifier.citationMarshall , H L , Hardcastle , M J , Birkinshaw , M , Croston , J H , Evans , D , Landt , H , Lenc , E , Massaro , F , Perlman , E , Schwartz , D A , Siemiginowska , A , Stawarz , L , Urry , C M & Worrall , D M 2010 , ' A flare in the jet of Pictor A ' , Astrophysical Journal Letters , vol. 714 , no. 2 , pp. L213-L216 . https://doi.org/10.1088/2041-8205/714/2/L213
dc.identifier.issn2041-8213
dc.identifier.otherPURE: 162882
dc.identifier.otherPURE UUID: d7891c63-17b9-4878-938e-4890df5e0f77
dc.identifier.otherdspace: 2299/4487
dc.identifier.otherScopus: 77952811585
dc.identifier.urihttp://hdl.handle.net/2299/7358
dc.descriptionOriginal article can be found at: http://www.iop.org/EJ/journal/apjl Copyright American Astronomical Society. [Full text of this article is not available in the UHRA]
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
dc.language.isoeng
dc.relation.ispartofAstrophysical Journal Letters
dc.titleA flare in the jet of Pictor Aen
dc.contributor.institutionSchool of Physics, Astronomy and Mathematics
dc.description.statusPeer reviewed
dcterms.dateAccepted2010
rioxxterms.versionofrecordhttps://doi.org/10.1088/2041-8205/714/2/L213
rioxxterms.typeJournal Article/Review
herts.preservation.rarelyaccessedtrue


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