Cutoff in the tev energy spectrum of markarian 421 during strong flares in 2001

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. Dela 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. Muller; 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

doi:10.1086/324221/pdf

Cutoff in the tev energy spectrum of markarian 421 during strong flares in 2001

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. Dela 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. HolderD. Horan, M. Jordan, M. Kertzman, D. Kieda, J. Kildea, J. Knapp, K. Kosack, M. J. Lang, S. LeBohec, B. McKernan, P. Moriarty, D. Muller, 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

Department of Physics

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4 Scopus citations

Abstract

Exceptionally strong and long-lasting flaring activity of the blazar Mrk 421 occurred between 2001 January and March. Based on the excellent signal-to-noise ratio of the data, we derive the energy spectrum between 260 GeV and 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: DN/dE ∝ E-2.14±0.03statℓ-E/E0m^-2S^-2 TeV^-1 with E₀=4.3±0.3_statTeV.Mrk 421 is the second -ray blazar that 0 stat unambiguously exhibits an absorption-like feature in its spectral energy distribution at 3-6 TeV.

Original language	English
Pages (from-to)	L45-L48
Journal	Astrophysical Journal Letters
Volume	560
Issue number	1
DOIs	https://doi.org/10.1086/324221/pdf
State	Published - Oct 10 2001

Keywords

BL Lacertae Objects: Individual (Markarian 421)-Gamma Rays: Observations

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Krennrich, F., Badran, H. M., Bond, I. H., Bradbury, S. M., Buckley, J. H., Carter-Lewis, D. A., Catanese, M., Cui, W., Dunlea, S., Das, D., Perez, I. D. C., Fegan, D. J., Fegan, S. J., Finley, J. P., Gaidos, J. A., Gibbs, K., Gillanders, G. H., Hall, T. A., Hillas, A. M., ... Weekes, T. C. (2001). Cutoff in the tev energy spectrum of markarian 421 during strong flares in 2001. Astrophysical Journal Letters, 560(1), L45-L48. https://doi.org/10.1086/324221/pdf

@article{4daef17640b84e5aafef5a930fe7f48e,

title = "Cutoff in the tev energy spectrum of markarian 421 during strong flares in 2001",

abstract = "Exceptionally strong and long-lasting flaring activity of the blazar Mrk 421 occurred between 2001 January and March. Based on the excellent signal-to-noise ratio of the data, we derive the energy spectrum between 260 GeV and 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: DN/dE ∝ E-2.14±0.03statℓ-E/E0m-2S-2 TeV-1 with E0=4.3±0.3statTeV.Mrk 421 is the second -ray blazar that 0 stat unambiguously exhibits an absorption-like feature in its spectral energy distribution at 3-6 TeV.",

keywords = "BL Lacertae Objects: Individual (Markarian 421)-Gamma Rays: Observations",

author = "F. Krennrich and Badran, {H. M.} and Bond, {I. H.} and Bradbury, {S. M.} and Buckley, {J. H.} and Carter-Lewis, {D. A.} and M. Catanese and W. Cui and S. Dunlea and D. Das and Perez, {I. Dela Calle} and Fegan, {D. J.} and Fegan, {S. J.} and Finley, {J. P.} and Gaidos, {J. A.} and K. Gibbs and Gillanders, {G. H.} and Hall, {T. A.} and Hillas, {A. M.} and J. Holder and D. Horan and M. Jordan and M. Kertzman and D. Kieda and J. Kildea and J. Knapp and K. Kosack and Lang, {M. J.} and S. LeBohec and B. McKernan and P. Moriarty and D. Muller and R. Ong and R. Pallassini and D. Petry and J. Quinn and Reay, {N. W.} and Reynolds, {P. T.} and Rose, {H. J.} and Sembroski, {G. H.} and R. Sidwell and N. Stanton and Swordy, {S. P.} and Vassiliev, {V. V.} and Wakely, {S. P.} and Weekes, {T. C.}",

note = "Publisher Copyright: {\textcopyright} 2001. The American Astronomical Society.",

year = "2001",

month = oct,

day = "10",

doi = "10.1086/324221/pdf",

language = "English",

volume = "560",

pages = "L45--L48",

journal = "Astrophysical Journal Letters",

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Krennrich, F, Badran, HM, Bond, IH, Bradbury, SM, Buckley, JH, Carter-Lewis, DA, Catanese, M, Cui, W, Dunlea, S, Das, D, Perez, IDC, Fegan, DJ, Fegan, SJ, Finley, JP, Gaidos, JA, Gibbs, K, Gillanders, GH, Hall, TA, Hillas, AM, Holder, J, Horan, D, Jordan, M, Kertzman, M, Kieda, D, Kildea, J, Knapp, J, Kosack, K, Lang, MJ, LeBohec, S, McKernan, B, Moriarty, P, Muller, D, Ong, R, Pallassini, R, Petry, D, Quinn, J, Reay, NW, Reynolds, PT, Rose, HJ, Sembroski, GH, Sidwell, R, Stanton, N, Swordy, SP, Vassiliev, VV, Wakely, SP & Weekes, TC 2001, 'Cutoff in the tev energy spectrum of markarian 421 during strong flares in 2001', Astrophysical Journal Letters, vol. 560, no. 1, pp. L45-L48. https://doi.org/10.1086/324221/pdf

TY - JOUR

T1 - Cutoff in the tev energy spectrum of markarian 421 during strong flares in 2001

AU - Krennrich, F.

AU - Badran, H. M.

AU - Bond, I. H.

AU - Bradbury, S. M.

AU - Buckley, J. H.

AU - Carter-Lewis, D. A.

AU - Catanese, M.

AU - Cui, W.

AU - Dunlea, S.

AU - Das, D.

AU - Perez, I. Dela Calle

AU - Fegan, D. J.

AU - Fegan, S. J.

AU - Finley, J. P.

AU - Gaidos, J. A.

AU - Gibbs, K.

AU - Gillanders, G. H.

AU - Hall, T. A.

AU - Hillas, A. M.

AU - Holder, J.

AU - Horan, D.

AU - Jordan, M.

AU - Kertzman, M.

AU - Kieda, D.

AU - Kildea, J.

AU - Knapp, J.

AU - Kosack, K.

AU - Lang, M. J.

AU - LeBohec, S.

AU - McKernan, B.

AU - Moriarty, P.

AU - Muller, D.

AU - Ong, R.

AU - Pallassini, R.

AU - Petry, D.

AU - Quinn, J.

AU - Reay, N. W.

AU - Reynolds, P. T.

AU - Rose, H. J.

AU - Sembroski, G. H.

AU - Sidwell, R.

AU - Stanton, N.

AU - Swordy, S. P.

AU - Vassiliev, V. V.

AU - Wakely, S. P.

AU - Weekes, T. C.

PY - 2001/10/10

Y1 - 2001/10/10

N2 - Exceptionally strong and long-lasting flaring activity of the blazar Mrk 421 occurred between 2001 January and March. Based on the excellent signal-to-noise ratio of the data, we derive the energy spectrum between 260 GeV and 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: DN/dE ∝ E-2.14±0.03statℓ-E/E0m-2S-2 TeV-1 with E0=4.3±0.3statTeV.Mrk 421 is the second -ray blazar that 0 stat unambiguously exhibits an absorption-like feature in its spectral energy distribution at 3-6 TeV.

AB - Exceptionally strong and long-lasting flaring activity of the blazar Mrk 421 occurred between 2001 January and March. Based on the excellent signal-to-noise ratio of the data, we derive the energy spectrum between 260 GeV and 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: DN/dE ∝ E-2.14±0.03statℓ-E/E0m-2S-2 TeV-1 with E0=4.3±0.3statTeV.Mrk 421 is the second -ray blazar that 0 stat unambiguously exhibits an absorption-like feature in its spectral energy distribution at 3-6 TeV.

KW - BL Lacertae Objects: Individual (Markarian 421)-Gamma Rays: Observations

UR - http://www.scopus.com/inward/record.url?scp=85033491312&partnerID=8YFLogxK

U2 - 10.1086/324221/pdf

DO - 10.1086/324221/pdf

M3 - Article

AN - SCOPUS:85033491312

SN - 2041-8205

VL - 560

SP - L45-L48

JO - Astrophysical Journal Letters

JF - Astrophysical Journal Letters

IS - 1

ER -

Cutoff in the tev energy spectrum of markarian 421 during strong flares in 2001

Abstract

Keywords

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