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dc.contributor.authorMacomb, D.J.
dc.contributor.authorAkerlof, C.
dc.contributor.authorAller, H. D.
dc.contributor.authorAller, M. F.
dc.contributor.authorBertsch, D. L.
dc.contributor.authorBruhweiler, F.
dc.contributor.authorBuckley, J.H.
dc.contributor.authorCarter-Lewis, D.A.
dc.contributor.authorCawley, M.F.
dc.contributor.authorCheng, K.-P.
dc.contributor.authorDermer, C.
dc.contributor.authorFegan, D.J.
dc.contributor.authorGaidos, J.A.
dc.contributor.authorGear, W.K.
dc.contributor.authorHall, C.R.
dc.contributor.authorHartman, R.C.
dc.contributor.authorHillas, A.M.
dc.contributor.authorKafatos, M.
dc.contributor.authorKerrick, A.D.
dc.contributor.authorKniffen, D.A.
dc.contributor.authorKondo, Y.
dc.contributor.authorKubo, H.
dc.contributor.authorLamb, R.C.
dc.contributor.authorMakino, F.
dc.contributor.authorMakishima, K.
dc.contributor.authorMarscher, A.
dc.contributor.authorMcEnery, J.
dc.contributor.authorMcHardy, I.M.
dc.contributor.authorMeyer, D.I.
dc.contributor.authorMoore, E.M.
dc.contributor.authorRamos, E.
dc.contributor.authorRobson, E.I.
dc.contributor.authorRose, H.J.
dc.contributor.authorSchubnell, M.S.
dc.contributor.authorSembroski, G.
dc.contributor.authorStevens, Jason
dc.contributor.authorTakahashi, T.
dc.contributor.authorTashiro, M.
dc.contributor.authorWeekes, T.C.
dc.contributor.authorWilson, C.
dc.contributor.authorZweerink, J.
dc.date.accessioned2012-01-17T12:01:05Z
dc.date.available2012-01-17T12:01:05Z
dc.date.issued1995-08-01
dc.identifier.citationMacomb , D J , Akerlof , C , Aller , H D , Aller , M F , Bertsch , D L , Bruhweiler , F , Buckley , J H , Carter-Lewis , D A , Cawley , M F , Cheng , K-P , Dermer , C , Fegan , D J , Gaidos , J A , Gear , W K , Hall , C R , Hartman , R C , Hillas , A M , Kafatos , M , Kerrick , A D , Kniffen , D A , Kondo , Y , Kubo , H , Lamb , R C , Makino , F , Makishima , K , Marscher , A , McEnery , J , McHardy , I M , Meyer , D I , Moore , E M , Ramos , E , Robson , E I , Rose , H J , Schubnell , M S , Sembroski , G , Stevens , J , Takahashi , T , Tashiro , M , Weekes , T C , Wilson , C & Zweerink , J 1995 , ' Multiwavelength Observations of Markarian 421 During a TeV/X-Ray Flare ' , Astrophysical Journal Letters , vol. 449 , no. 2 , pp. L99 . https://doi.org/10.1086/309646
dc.identifier.issn2041-8213
dc.identifier.otherPURE: 524036
dc.identifier.otherPURE UUID: c276032a-1597-4122-b796-e5c06d8d4cef
dc.identifier.otherBibtex: urn:99c17ba30d0e184676283291f6125a72
dc.identifier.otherScopus: 79960833943
dc.identifier.urihttp://hdl.handle.net/2299/7669
dc.description.abstractA TeV flare from the BL Lac object Mrk 421 was detected in May of 1994 by the Whipple Observatory air Cherenkov experiment during which the flux above 250 GeV increased by nearly an order of magnitude over a 2-day period. Contemporaneous observations by ASCA showed the X-ray flux to be in a very high state. We present these results, combined with the first ever simultaneous or nearly simultaneous observations at GeV gamma-ray, UV, IR, mm, and radio energies for this nearest BL Lac object. While the GeV gamma-ray flux increased slightly, there is little evidence for variability comparable to that seen at TeV and X-ray energies. Other wavelengths show even less variability. This provides important constraints on the emission mechanisms at work. We present the multiwavelength spectrum of this gamma-ray blazar for both quiescent and flaring states and discuss the data in terms of current models of blazar emission.en
dc.language.isoeng
dc.relation.ispartofAstrophysical Journal Letters
dc.subjectGALAXIES: BL LACERTAE OBJECTS: GENERAL, GALAXIES: BL LACERTAE OBJECTS: INDIVIDUAL NAME: MARKARIAN 421
dc.titleMultiwavelength Observations of Markarian 421 During a TeV/X-Ray Flareen
dc.contributor.institutionSchool of Physics, Astronomy and Mathematics
dc.contributor.institutionScience & Technology Research Institute
dc.contributor.institutionCentre for Astrophysics Research
dc.description.statusPeer reviewed
dc.relation.schoolSchool of Physics, Astronomy and Mathematics
dcterms.dateAccepted1995-08-01
rioxxterms.versionofrecordhttps://doi.org/10.1086/309646
rioxxterms.typeJournal Article/Review
herts.preservation.rarelyaccessedtrue


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