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dc.contributor.authorLang, Mark
dc.contributor.authorGillanders, Gary
dc.date.accessioned2012-01-20T11:32:59Z
dc.date.available2012-01-20T11:32:59Z
dc.date.issued2001
dc.identifier.citationF. Krennrich, H.M. Badran, I.H. Bond, S.M. Bradbury, J.H. Buckley, D.A. Carter-Lewis, M. Catanese, W. Cui, S. Dunlea, D. Das, I. de la Calle Perez, D.J. Fegan, S.J. Fegan, J.P. Finley, J.A. Gaidos, K. Gibbs, G.H. Gillanders, T.A. Hall, A.M. Hillas, J. Holder, D. Horan, M. Jordan, M. Kertzman, D. Kieda, J. Kildea, J. Knapp, K. Kosack, M.J. Lang, S. LeBohec, B. McKernan, P. Moriarty, D. M\"uller, R. Ong, R. Pallassini, D. Petry, J. Quinn, N.W. Reay, P.T. Reynolds, H.J. Rose, G.H. Sembroski, R. Sidwell, N. Stanton, S.P. Swordy, V.V. Vassiliev, S.P. Wakely, T.C. Weekes(2001)Cutoff in the TeV Energy Spectrum of Markarian 421 During Strong Flares in 2001, Astrophys.J.560:L45-L48,2001en_US
dc.identifier.urihttp://hdl.handle.net/10379/2513
dc.description.abstractExceptionally strong and long lasting flaring activity of the blazar Markarian 421 (Mrk 421) occurred between January and March 2001. Based on the excellent signal-to-noise ratio of the data we derive the energy spectrum between 260 GeV - 17 TeV with unprecedented statistical precision. The spectrum is not well described by a simple power law even with a curvature term. Instead the data can be described by a power law with exponential cutoff: $\rm {{dN}\over{dE}} \propto \rm E^{-2.14 \pm 0.03_{stat}} \times e^{-E/E_{0}} m^{-2} s^{-1} TeV^{-1}$ with $\rm E_{0} = 4.3 \pm 0.3_{stat} TeV$. Mrk 421 is the second $\gamma$-ray blazar that unambiguously exhibits an absorption-like feature in its spectral energy distribution at 3-6 TeV suggesting that this may be a universal phenomenon, possibly due to the extragalactic infra-red background radiation.
dc.formatapplication/pdfen_US
dc.language.isoenen_US
dc.subjectAstrophysics
dc.titleCutoff in the TeV Energy Spectrum of Markarian 421 During Strong Flares in 2001en_US
dc.typeArticleen_US
dc.local.publishedsourcehttp://arxiv.org/pdf/astro-ph/0107113en_US
dc.description.peer-reviewedpeer-revieweden_US
dc.local.authorsF. Krennrich, H.M. Badran, I.H. Bond, S.M. Bradbury, J.H. Buckley, D.A. Carter-Lewis, M. Catanese, W. Cui, S. Dunlea, D. Das, I. de la Calle Perez, D.J. Fegan, S.J. Fegan, J.P. Finley, J.A. Gaidos, K. Gibbs, G.H. Gillanders, T.A. Hall, A.M. Hillas, J. Holder, D. Horan, M. Jordan, M. Kertzman, D. Kieda, J. Kildea, J. Knapp, K. Kosack, M.J. Lang, S. LeBohec, B. McKernan, P. Moriarty, D. M\"uller, R. Ong, R. Pallassini, D. Petry, J. Quinn, N.W. Reay, P.T. Reynolds, H.J. Rose, G.H. Sembroski, R. Sidwell, N. Stanton, S.P. Swordy, V.V. Vassiliev, S.P. Wakely, T.C. Weekes
dc.local.arxividastro-ph/0107113
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