Discovery of TeV gamma-ray emission from CTA 1 by Veritas

E. Aliu, S. Archambault, T. Arlen, T. Aune, M. Beilicke, W. Benbow, A. Bouvier, J. H. Buckley, V. Bugaev, A. Cesarini, L. Ciupik, E. Collins-Hughes, M. P. Connolly, W. Cui, R. Dickherber, C. Duke, J. Dumm, V. V. Dwarkadas, M. Errando, Abraham David Falcone & 71 others S. Federici, Q. Feng, J. P. Finley, G. Finnegan, L. Fortson, A. Furniss, N. Galante, D. Gall, G. H. Gillanders, S. Godambe, E. V. Gotthelf, S. Griffin, J. Grube, G. Gyuk, D. Hanna, J. Holder, G. Hughes, T. B. Humensky, P. Kaaret, O. Kargaltsev, N. Karlsson, Y. Khassen, D. Kieda, H. Krawczynski, F. Krennrich, M. J. Lang, K. Lee, A. S. Madhavan, G. Maier, P. Majumdar, S. McArthur, A. McCann, P. Moriarty, R. Mukherjee, T. Nelson, A. O.Faoláin De Bhróithe, R. A. Ong, M. Orr, A. N. Otte, N. Park, J. S. Perkins, M. Pohl, H. Prokoph, J. Quinn, K. Ragan, L. C. Reyes, P. T. Reynolds, E. Roache, M. Roberts, D. B. Saxon, M. Schroedter, G. H. Sembroski, P. Slane, A. W. Smith, D. Staszak, I. Telezhinsky, G. Tešić, M. Theiling, S. Thibadeau, K. Tsurusaki, J. Tyler, A. Varlotta, V. V. Vassiliev, S. Vincent, M. Vivier, S. P. Wakely, T. C. Weekes, A. Weinstein, R. Welsing, D. A. Williams, B. Zitzer

Research output: Contribution to journalArticle

21 Citations (Scopus)

Abstract

We report the discovery of TeV gamma-ray emission coincident with the shell-type radio supernova remnant (SNR) CTA 1 using the VERITAS gamma-ray observatory. The source, VER J0006+729, was detected as a 6.5 standard deviation excess over background and shows an extended morphology, approximated by a two-dimensional Gaussian of semimajor (semiminor) axis 0.°30 (0.°24) and a centroid 5′ from the Fermi gamma-ray pulsar PSR J0007+7303 and its X-ray pulsar wind nebula (PWN). The photon spectrum is well described by a power-law dN/dE = N 0(E/3 TeV), with a differential spectral index of Γ = 2.2 ± 0.2stat ± 0.3sys, and normalization N 0 = (9.1 ± 1.3stat ± 1.7sys) × 10-14 cm -2 s-1 TeV-1. The integral flux, F γ = 4.0 × 10-12 erg cm-2 s -1 above 1 TeV, corresponds to 0.2% of the pulsar spin-down power at 1.4 kpc. The energetics, colocation with the SNR, and the relatively small extent of the TeV emission strongly argue for the PWN origin of the TeV photons. We consider the origin of the TeV emission in CTA 1.

Original languageEnglish (US)
Article number38
JournalAstrophysical Journal
Volume764
Issue number1
DOIs
StatePublished - Feb 10 2013

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pulsars
gamma rays
supernova remnants
nebulae
Gamma Ray Observatory
erg
power law
photons
energetics
observatory
centroids
shell
radio
standard deviation
x rays
normalisation
index

All Science Journal Classification (ASJC) codes

  • Astronomy and Astrophysics
  • Space and Planetary Science

Cite this

Aliu, E., Archambault, S., Arlen, T., Aune, T., Beilicke, M., Benbow, W., ... Zitzer, B. (2013). Discovery of TeV gamma-ray emission from CTA 1 by Veritas. Astrophysical Journal, 764(1), [38]. https://doi.org/10.1088/0004-637X/764/1/38
Aliu, E. ; Archambault, S. ; Arlen, T. ; Aune, T. ; Beilicke, M. ; Benbow, W. ; Bouvier, A. ; Buckley, J. H. ; Bugaev, V. ; Cesarini, A. ; Ciupik, L. ; Collins-Hughes, E. ; Connolly, M. P. ; Cui, W. ; Dickherber, R. ; Duke, C. ; Dumm, J. ; Dwarkadas, V. V. ; Errando, M. ; Falcone, Abraham David ; Federici, S. ; Feng, Q. ; Finley, J. P. ; Finnegan, G. ; Fortson, L. ; Furniss, A. ; Galante, N. ; Gall, D. ; Gillanders, G. H. ; Godambe, S. ; Gotthelf, E. V. ; Griffin, S. ; Grube, J. ; Gyuk, G. ; Hanna, D. ; Holder, J. ; Hughes, G. ; Humensky, T. B. ; Kaaret, P. ; Kargaltsev, O. ; Karlsson, N. ; Khassen, Y. ; Kieda, D. ; Krawczynski, H. ; Krennrich, F. ; Lang, M. J. ; Lee, K. ; Madhavan, A. S. ; Maier, G. ; Majumdar, P. ; McArthur, S. ; McCann, A. ; Moriarty, P. ; Mukherjee, R. ; Nelson, T. ; De Bhróithe, A. O.Faoláin ; Ong, R. A. ; Orr, M. ; Otte, A. N. ; Park, N. ; Perkins, J. S. ; Pohl, M. ; Prokoph, H. ; Quinn, J. ; Ragan, K. ; Reyes, L. C. ; Reynolds, P. T. ; Roache, E. ; Roberts, M. ; Saxon, D. B. ; Schroedter, M. ; Sembroski, G. H. ; Slane, P. ; Smith, A. W. ; Staszak, D. ; Telezhinsky, I. ; Tešić, G. ; Theiling, M. ; Thibadeau, S. ; Tsurusaki, K. ; Tyler, J. ; Varlotta, A. ; Vassiliev, V. V. ; Vincent, S. ; Vivier, M. ; Wakely, S. P. ; Weekes, T. C. ; Weinstein, A. ; Welsing, R. ; Williams, D. A. ; Zitzer, B. / Discovery of TeV gamma-ray emission from CTA 1 by Veritas. In: Astrophysical Journal. 2013 ; Vol. 764, No. 1.
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abstract = "We report the discovery of TeV gamma-ray emission coincident with the shell-type radio supernova remnant (SNR) CTA 1 using the VERITAS gamma-ray observatory. The source, VER J0006+729, was detected as a 6.5 standard deviation excess over background and shows an extended morphology, approximated by a two-dimensional Gaussian of semimajor (semiminor) axis 0.°30 (0.°24) and a centroid 5′ from the Fermi gamma-ray pulsar PSR J0007+7303 and its X-ray pulsar wind nebula (PWN). The photon spectrum is well described by a power-law dN/dE = N 0(E/3 TeV)-Γ, with a differential spectral index of Γ = 2.2 ± 0.2stat ± 0.3sys, and normalization N 0 = (9.1 ± 1.3stat ± 1.7sys) × 10-14 cm -2 s-1 TeV-1. The integral flux, F γ = 4.0 × 10-12 erg cm-2 s -1 above 1 TeV, corresponds to 0.2{\%} of the pulsar spin-down power at 1.4 kpc. The energetics, colocation with the SNR, and the relatively small extent of the TeV emission strongly argue for the PWN origin of the TeV photons. We consider the origin of the TeV emission in CTA 1.",
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Aliu, E, Archambault, S, Arlen, T, Aune, T, Beilicke, M, Benbow, W, Bouvier, A, Buckley, JH, Bugaev, V, Cesarini, A, Ciupik, L, Collins-Hughes, E, Connolly, MP, Cui, W, Dickherber, R, Duke, C, Dumm, J, Dwarkadas, VV, Errando, M, Falcone, AD, Federici, S, Feng, Q, Finley, JP, Finnegan, G, Fortson, L, Furniss, A, Galante, N, Gall, D, Gillanders, GH, Godambe, S, Gotthelf, EV, Griffin, S, Grube, J, Gyuk, G, Hanna, D, Holder, J, Hughes, G, Humensky, TB, Kaaret, P, Kargaltsev, O, Karlsson, N, Khassen, Y, Kieda, D, Krawczynski, H, Krennrich, F, Lang, MJ, Lee, K, Madhavan, AS, Maier, G, Majumdar, P, McArthur, S, McCann, A, Moriarty, P, Mukherjee, R, Nelson, T, De Bhróithe, AOF, Ong, RA, Orr, M, Otte, AN, Park, N, Perkins, JS, Pohl, M, Prokoph, H, Quinn, J, Ragan, K, Reyes, LC, Reynolds, PT, Roache, E, Roberts, M, Saxon, DB, Schroedter, M, Sembroski, GH, Slane, P, Smith, AW, Staszak, D, Telezhinsky, I, Tešić, G, Theiling, M, Thibadeau, S, Tsurusaki, K, Tyler, J, Varlotta, A, Vassiliev, VV, Vincent, S, Vivier, M, Wakely, SP, Weekes, TC, Weinstein, A, Welsing, R, Williams, DA & Zitzer, B 2013, 'Discovery of TeV gamma-ray emission from CTA 1 by Veritas', Astrophysical Journal, vol. 764, no. 1, 38. https://doi.org/10.1088/0004-637X/764/1/38

Discovery of TeV gamma-ray emission from CTA 1 by Veritas. / Aliu, E.; Archambault, S.; Arlen, T.; Aune, T.; Beilicke, M.; Benbow, W.; Bouvier, A.; Buckley, J. H.; Bugaev, V.; Cesarini, A.; Ciupik, L.; Collins-Hughes, E.; Connolly, M. P.; Cui, W.; Dickherber, R.; Duke, C.; Dumm, J.; Dwarkadas, V. V.; Errando, M.; Falcone, Abraham David; Federici, S.; Feng, Q.; Finley, J. P.; Finnegan, G.; Fortson, L.; Furniss, A.; Galante, N.; Gall, D.; Gillanders, G. H.; Godambe, S.; Gotthelf, E. V.; Griffin, S.; Grube, J.; Gyuk, G.; Hanna, D.; Holder, J.; Hughes, G.; Humensky, T. B.; Kaaret, P.; Kargaltsev, O.; Karlsson, N.; Khassen, Y.; Kieda, D.; Krawczynski, H.; Krennrich, F.; Lang, M. J.; Lee, K.; Madhavan, A. S.; Maier, G.; Majumdar, P.; McArthur, S.; McCann, A.; Moriarty, P.; Mukherjee, R.; Nelson, T.; De Bhróithe, A. O.Faoláin; Ong, R. A.; Orr, M.; Otte, A. N.; Park, N.; Perkins, J. S.; Pohl, M.; Prokoph, H.; Quinn, J.; Ragan, K.; Reyes, L. C.; Reynolds, P. T.; Roache, E.; Roberts, M.; Saxon, D. B.; Schroedter, M.; Sembroski, G. H.; Slane, P.; Smith, A. W.; Staszak, D.; Telezhinsky, I.; Tešić, G.; Theiling, M.; Thibadeau, S.; Tsurusaki, K.; Tyler, J.; Varlotta, A.; Vassiliev, V. V.; Vincent, S.; Vivier, M.; Wakely, S. P.; Weekes, T. C.; Weinstein, A.; Welsing, R.; Williams, D. A.; Zitzer, B.

In: Astrophysical Journal, Vol. 764, No. 1, 38, 10.02.2013.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Discovery of TeV gamma-ray emission from CTA 1 by Veritas

AU - Aliu, E.

AU - Archambault, S.

AU - Arlen, T.

AU - Aune, T.

AU - Beilicke, M.

AU - Benbow, W.

AU - Bouvier, A.

AU - Buckley, J. H.

AU - Bugaev, V.

AU - Cesarini, A.

AU - Ciupik, L.

AU - Collins-Hughes, E.

AU - Connolly, M. P.

AU - Cui, W.

AU - Dickherber, R.

AU - Duke, C.

AU - Dumm, J.

AU - Dwarkadas, V. V.

AU - Errando, M.

AU - Falcone, Abraham David

AU - Federici, S.

AU - Feng, Q.

AU - Finley, J. P.

AU - Finnegan, G.

AU - Fortson, L.

AU - Furniss, A.

AU - Galante, N.

AU - Gall, D.

AU - Gillanders, G. H.

AU - Godambe, S.

AU - Gotthelf, E. V.

AU - Griffin, S.

AU - Grube, J.

AU - Gyuk, G.

AU - Hanna, D.

AU - Holder, J.

AU - Hughes, G.

AU - Humensky, T. B.

AU - Kaaret, P.

AU - Kargaltsev, O.

AU - Karlsson, N.

AU - Khassen, Y.

AU - Kieda, D.

AU - Krawczynski, H.

AU - Krennrich, F.

AU - Lang, M. J.

AU - Lee, K.

AU - Madhavan, A. S.

AU - Maier, G.

AU - Majumdar, P.

AU - McArthur, S.

AU - McCann, A.

AU - Moriarty, P.

AU - Mukherjee, R.

AU - Nelson, T.

AU - De Bhróithe, A. O.Faoláin

AU - Ong, R. A.

AU - Orr, M.

AU - Otte, A. N.

AU - Park, N.

AU - Perkins, J. S.

AU - Pohl, M.

AU - Prokoph, H.

AU - Quinn, J.

AU - Ragan, K.

AU - Reyes, L. C.

AU - Reynolds, P. T.

AU - Roache, E.

AU - Roberts, M.

AU - Saxon, D. B.

AU - Schroedter, M.

AU - Sembroski, G. H.

AU - Slane, P.

AU - Smith, A. W.

AU - Staszak, D.

AU - Telezhinsky, I.

AU - Tešić, G.

AU - Theiling, M.

AU - Thibadeau, S.

AU - Tsurusaki, K.

AU - Tyler, J.

AU - Varlotta, A.

AU - Vassiliev, V. V.

AU - Vincent, S.

AU - Vivier, M.

AU - Wakely, S. P.

AU - Weekes, T. C.

AU - Weinstein, A.

AU - Welsing, R.

AU - Williams, D. A.

AU - Zitzer, B.

PY - 2013/2/10

Y1 - 2013/2/10

N2 - We report the discovery of TeV gamma-ray emission coincident with the shell-type radio supernova remnant (SNR) CTA 1 using the VERITAS gamma-ray observatory. The source, VER J0006+729, was detected as a 6.5 standard deviation excess over background and shows an extended morphology, approximated by a two-dimensional Gaussian of semimajor (semiminor) axis 0.°30 (0.°24) and a centroid 5′ from the Fermi gamma-ray pulsar PSR J0007+7303 and its X-ray pulsar wind nebula (PWN). The photon spectrum is well described by a power-law dN/dE = N 0(E/3 TeV)-Γ, with a differential spectral index of Γ = 2.2 ± 0.2stat ± 0.3sys, and normalization N 0 = (9.1 ± 1.3stat ± 1.7sys) × 10-14 cm -2 s-1 TeV-1. The integral flux, F γ = 4.0 × 10-12 erg cm-2 s -1 above 1 TeV, corresponds to 0.2% of the pulsar spin-down power at 1.4 kpc. The energetics, colocation with the SNR, and the relatively small extent of the TeV emission strongly argue for the PWN origin of the TeV photons. We consider the origin of the TeV emission in CTA 1.

AB - We report the discovery of TeV gamma-ray emission coincident with the shell-type radio supernova remnant (SNR) CTA 1 using the VERITAS gamma-ray observatory. The source, VER J0006+729, was detected as a 6.5 standard deviation excess over background and shows an extended morphology, approximated by a two-dimensional Gaussian of semimajor (semiminor) axis 0.°30 (0.°24) and a centroid 5′ from the Fermi gamma-ray pulsar PSR J0007+7303 and its X-ray pulsar wind nebula (PWN). The photon spectrum is well described by a power-law dN/dE = N 0(E/3 TeV)-Γ, with a differential spectral index of Γ = 2.2 ± 0.2stat ± 0.3sys, and normalization N 0 = (9.1 ± 1.3stat ± 1.7sys) × 10-14 cm -2 s-1 TeV-1. The integral flux, F γ = 4.0 × 10-12 erg cm-2 s -1 above 1 TeV, corresponds to 0.2% of the pulsar spin-down power at 1.4 kpc. The energetics, colocation with the SNR, and the relatively small extent of the TeV emission strongly argue for the PWN origin of the TeV photons. We consider the origin of the TeV emission in CTA 1.

UR - http://www.scopus.com/inward/record.url?scp=84873962718&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84873962718&partnerID=8YFLogxK

U2 - 10.1088/0004-637X/764/1/38

DO - 10.1088/0004-637X/764/1/38

M3 - Article

VL - 764

JO - Astrophysical Journal

JF - Astrophysical Journal

SN - 0004-637X

IS - 1

M1 - 38

ER -

Aliu E, Archambault S, Arlen T, Aune T, Beilicke M, Benbow W et al. Discovery of TeV gamma-ray emission from CTA 1 by Veritas. Astrophysical Journal. 2013 Feb 10;764(1). 38. https://doi.org/10.1088/0004-637X/764/1/38