ARAN - Access to Research at NUI Galway

Cutoff in the TeV Energy Spectrum of Markarian 421 During Strong Flares in 2001

ARAN - Access to Research at NUI Galway

Show simple item record

dc.contributor.author Lang, Mark
dc.contributor.author Gillanders, Gary
dc.date.accessioned 2012-01-20T11:32:59Z
dc.date.available 2012-01-20T11:32:59Z
dc.date.issued 2001
dc.identifier.citation F. 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-L48,2001 en_US
dc.identifier.uri http://hdl.handle.net/10379/2513
dc.description.abstract Exceptionally 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.format application/pdf en_US
dc.language.iso en en_US
dc.subject Astrophysics
dc.title Cutoff in the TeV Energy Spectrum of Markarian 421 During Strong Flares in 2001 en_US
dc.type Article en_US
dc.local.publishedsource http://arxiv.org/pdf/astro-ph/0107113 en_US
dc.description.peer-reviewed peer-reviewed en_US
dc.local.authors F. 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.arxivid astro-ph/0107113

Files in this item

Full Text

This item appears in the following Collection(s)

Show simple item record

Search ARAN


Advanced Search

Browse

My Account

Statistics