Hour-Scale Multiwavelength Variability in Markarian 421

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dc.creatorCatanese, M.
dc.creatorBond, I. H.
dc.creatorBradbury, S. M.
dc.creatorBreslin, A. C.
dc.creatorBuckley, J. H.
dc.creatorBurdett, A. M.
dc.creatorCarter-Lewis, D. A.
dc.creatorCawley, M. F.
dc.creatorDunlea, S.
dc.creatorD'Vali, M.
dc.creatorFegan, D. J.
dc.creatorFegan, S. J.
dc.creatorFinley, J. P.
dc.creatorGaidos, J. A.
dc.creatorHall, T. A.
dc.creatorHillas, A. M.
dc.creatorHoran, D.
dc.creatorKnapp, J.
dc.creatorKrennrich, F.
dc.creatorBohec, S. Le
dc.creatorLessard, R. W.
dc.creatorMasterson, C.
dc.creatorMoriarty, P.
dc.creatorQuinn, J.
dc.creatorRose, H. J.
dc.creatorSamuelson, F. W.
dc.creatorSembroski, G. H.
dc.creatorVassiliev, V. V.
dc.creatorWeekes, T. C.
dc.creatorMaraschi, L.
dc.creatorFossati, G.
dc.creatorTavecchio, F.
dc.creatorChiappetti, L.
dc.creatorCelotti, A.
dc.creatorGhisellini, G.
dc.creatorGrandi, P.
dc.creatorPian, E.
dc.creatorTagliaferri, G.
dc.creatorTreves, A.
dc.date1999-06-11
dc.date.accessioned2026-07-07T02:31:59Z
dc.date.available2026-07-07T02:31:59Z
dc.descriptionMarkarian 421 was observed for about four days with BeppoSAX and the Whipple Observatory gamma-ray telescope in April 1998. A pronounced, well-defined, flare with hour-scale variability was observed simultaneously in X-rays and very high energy gamma-rays. These data provide the first evidence that the X-ray and TeV intensities are well correlated on time-scales of hours. While the rise of the flare occurred on a similar time-scale in the two wavebands, the decay of the flare was much more rapid in gamma rays, providing the first clear indication that the X-ray and gamma-ray emission may not be completely correlated in Markarian 421.
dc.description4 pages, 1 figure, to be published in the proceedings of the 26th ICRC (Salt Lake City, 1999)
dc.identifierhttps://arxiv.org/abs/astro-ph/9906209
dc.identifierhttp://arxiv.org/abs/astro-ph/9906209
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/14351
dc.subjectAstrophysics
dc.titleHour-Scale Multiwavelength Variability in Markarian 421
dc.typetext

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