Veritas observations of gamma-ray bursts detected by Swift

V. A. Acciari; E. Aliu; T. Arlen; T. Aune; M. Beilicke; W. Benbow; S. M. Bradbury; J. H. Buckley; V. Bugaev; K. Byrum; A. Cannon; A. Cesarini; J. L. Christiansen; L. Ciupik; E. Collins-Hughes; M. P. Connolly; W. Cui; C. Duke; M. Errando; A. Falcone; J. P. Finley; G. Finnegan; L. Fortson; A. Furniss; N. Galante; D. Gall; S. Godambe; S. Griffin; J. Grube; R. Guenette; G. Gyuk; D. Hanna; J. Holder; G. Hughes; C. M. Hui; T. B. Humensky; D. J. Jackson; P. Kaaret; N. Karlsson; M. Kertzman; D. Kieda; H. Krawczynski; F. Krennrich; M. J. Lang; A. S. Madhavan; G. Maier; S. McArthur; A. McCann; P. Moriarty; M. D. Newbold

doi:10.1088/0004-637X/743/1/62

Veritas observations of gamma-ray bursts detected by Swift

V. A. Acciari, E. Aliu, T. Arlen, T. Aune, M. Beilicke, W. Benbow, S. M. Bradbury, J. H. Buckley, V. Bugaev, K. Byrum, A. Cannon, A. Cesarini, J. L. Christiansen, L. Ciupik, E. Collins-Hughes, M. P. Connolly, W. Cui, C. Duke, M. Errando, A. FalconeJ. P. Finley, G. Finnegan, L. Fortson, A. Furniss, N. Galante, D. Gall, S. Godambe, S. Griffin, J. Grube, R. Guenette, G. Gyuk, D. Hanna, J. Holder, G. Hughes, C. M. Hui, T. B. Humensky, D. J. Jackson, P. Kaaret, N. Karlsson, M. Kertzman, D. Kieda, H. Krawczynski, F. Krennrich, M. J. Lang, A. S. Madhavan, G. Maier, S. McArthur, A. McCann, P. Moriarty, M. D. Newbold

Physics and Astronomy (Twin Cities)

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Abstract

We present the results of 16 Swift-triggered Gamma-ray burst (GRB) follow-up observations taken with the Very Energetic Radiation Imaging Telescope Array System (VERITAS) telescope array from 2007 January to 2009 June. The median energy threshold and response time of these observations were 260GeV and 320s, respectively. Observations had an average duration of 90 minutes. Each burst is analyzed independently in two modes: over the whole duration of the observations and again over a shorter timescale determined by the maximum VERITAS sensitivity to a burst with a t ^-1.5 time profile. This temporal model is characteristic of GRB afterglows with high-energy, long-lived emission that have been detected by the Large Area Telescope on board the Fermi satellite. No significant very high energy (VHE) gamma-ray emission was detected and upper limits above the VERITAS threshold energy are calculated. The VERITAS upper limits are corrected for gamma-ray extinction by the extragalactic background light and interpreted in the context of thekeV emission detected by Swift. For some bursts the VHE emission must have less power than thekeV emission, placing constraints on inverse Compton models of VHE emission.

Original language	English (US)
Article number	62
Journal	Astrophysical Journal
Volume	743
Issue number	1
DOIs	https://doi.org/10.1088/0004-637X/743/1/62
State	Published - Dec 10 2011

Keywords

astroparticle physics
gamma-ray burst: general

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Acciari, V. A., Aliu, E., Arlen, T., Aune, T., Beilicke, M., Benbow, W., Bradbury, S. M., Buckley, J. H., Bugaev, V., Byrum, K., Cannon, A., Cesarini, A., Christiansen, J. L., Ciupik, L., Collins-Hughes, E., Connolly, M. P., Cui, W., Duke, C., Errando, M., ... Newbold, M. D. (2011). Veritas observations of gamma-ray bursts detected by Swift. Astrophysical Journal, 743(1), Article 62. https://doi.org/10.1088/0004-637X/743/1/62

Acciari, VA, Aliu, E, Arlen, T, Aune, T, Beilicke, M, Benbow, W, Bradbury, SM, Buckley, JH, Bugaev, V, Byrum, K, Cannon, A, Cesarini, A, Christiansen, JL, Ciupik, L, Collins-Hughes, E, Connolly, MP, Cui, W, Duke, C, Errando, M, Falcone, A, Finley, JP, Finnegan, G, Fortson, L, Furniss, A, Galante, N, Gall, D, Godambe, S, Griffin, S, Grube, J, Guenette, R, Gyuk, G, Hanna, D, Holder, J, Hughes, G, Hui, CM, Humensky, TB, Jackson, DJ, Kaaret, P, Karlsson, N, Kertzman, M, Kieda, D, Krawczynski, H, Krennrich, F, Lang, MJ, Madhavan, AS, Maier, G, McArthur, S, McCann, A, Moriarty, P & Newbold, MD 2011, 'Veritas observations of gamma-ray bursts detected by Swift', Astrophysical Journal, vol. 743, no. 1, 62. https://doi.org/10.1088/0004-637X/743/1/62

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title = "Veritas observations of gamma-ray bursts detected by Swift",

abstract = "We present the results of 16 Swift-triggered Gamma-ray burst (GRB) follow-up observations taken with the Very Energetic Radiation Imaging Telescope Array System (VERITAS) telescope array from 2007 January to 2009 June. The median energy threshold and response time of these observations were 260GeV and 320s, respectively. Observations had an average duration of 90 minutes. Each burst is analyzed independently in two modes: over the whole duration of the observations and again over a shorter timescale determined by the maximum VERITAS sensitivity to a burst with a t -1.5 time profile. This temporal model is characteristic of GRB afterglows with high-energy, long-lived emission that have been detected by the Large Area Telescope on board the Fermi satellite. No significant very high energy (VHE) gamma-ray emission was detected and upper limits above the VERITAS threshold energy are calculated. The VERITAS upper limits are corrected for gamma-ray extinction by the extragalactic background light and interpreted in the context of thekeV emission detected by Swift. For some bursts the VHE emission must have less power than thekeV emission, placing constraints on inverse Compton models of VHE emission.",

keywords = "astroparticle physics, gamma-ray burst: general",

author = "Acciari, {V. A.} and E. Aliu and T. Arlen and T. Aune and M. Beilicke and W. Benbow and Bradbury, {S. M.} and Buckley, {J. H.} and V. Bugaev and K. Byrum and A. Cannon and A. Cesarini and Christiansen, {J. L.} and L. Ciupik and E. Collins-Hughes and Connolly, {M. P.} and W. Cui and C. Duke and M. Errando and A. Falcone and Finley, {J. P.} and G. Finnegan and L. Fortson and A. Furniss and N. Galante and D. Gall and S. Godambe and S. Griffin and J. Grube and R. Guenette and G. Gyuk and D. Hanna and J. Holder and G. Hughes and Hui, {C. M.} and Humensky, {T. B.} and Jackson, {D. J.} and P. Kaaret and N. Karlsson and M. Kertzman and D. Kieda and H. Krawczynski and F. Krennrich and Lang, {M. J.} and Madhavan, {A. S.} and G. Maier and S. McArthur and A. McCann and P. Moriarty and Newbold, {M. D.}",

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T1 - Veritas observations of gamma-ray bursts detected by Swift

AU - Acciari, V. A.

AU - Aliu, E.

AU - Arlen, T.

AU - Aune, T.

AU - Beilicke, M.

AU - Benbow, W.

AU - Bradbury, S. M.

AU - Buckley, J. H.

AU - Bugaev, V.

AU - Byrum, K.

AU - Cannon, A.

AU - Cesarini, A.

AU - Christiansen, J. L.

AU - Ciupik, L.

AU - Collins-Hughes, E.

AU - Connolly, M. P.

AU - Cui, W.

AU - Duke, C.

AU - Errando, M.

AU - Falcone, A.

AU - Finley, J. P.

AU - Finnegan, G.

AU - Fortson, L.

AU - Furniss, A.

AU - Galante, N.

AU - Gall, D.

AU - Godambe, S.

AU - Griffin, S.

AU - Grube, J.

AU - Guenette, R.

AU - Gyuk, G.

AU - Hanna, D.

AU - Holder, J.

AU - Hughes, G.

AU - Hui, C. M.

AU - Humensky, T. B.

AU - Jackson, D. J.

AU - Kaaret, P.

AU - Karlsson, N.

AU - Kertzman, M.

AU - Kieda, D.

AU - Krawczynski, H.

AU - Krennrich, F.

AU - Lang, M. J.

AU - Madhavan, A. S.

AU - Maier, G.

AU - McArthur, S.

AU - McCann, A.

AU - Moriarty, P.

AU - Newbold, M. D.

PY - 2011/12/10

Y1 - 2011/12/10

N2 - We present the results of 16 Swift-triggered Gamma-ray burst (GRB) follow-up observations taken with the Very Energetic Radiation Imaging Telescope Array System (VERITAS) telescope array from 2007 January to 2009 June. The median energy threshold and response time of these observations were 260GeV and 320s, respectively. Observations had an average duration of 90 minutes. Each burst is analyzed independently in two modes: over the whole duration of the observations and again over a shorter timescale determined by the maximum VERITAS sensitivity to a burst with a t -1.5 time profile. This temporal model is characteristic of GRB afterglows with high-energy, long-lived emission that have been detected by the Large Area Telescope on board the Fermi satellite. No significant very high energy (VHE) gamma-ray emission was detected and upper limits above the VERITAS threshold energy are calculated. The VERITAS upper limits are corrected for gamma-ray extinction by the extragalactic background light and interpreted in the context of thekeV emission detected by Swift. For some bursts the VHE emission must have less power than thekeV emission, placing constraints on inverse Compton models of VHE emission.

AB - We present the results of 16 Swift-triggered Gamma-ray burst (GRB) follow-up observations taken with the Very Energetic Radiation Imaging Telescope Array System (VERITAS) telescope array from 2007 January to 2009 June. The median energy threshold and response time of these observations were 260GeV and 320s, respectively. Observations had an average duration of 90 minutes. Each burst is analyzed independently in two modes: over the whole duration of the observations and again over a shorter timescale determined by the maximum VERITAS sensitivity to a burst with a t -1.5 time profile. This temporal model is characteristic of GRB afterglows with high-energy, long-lived emission that have been detected by the Large Area Telescope on board the Fermi satellite. No significant very high energy (VHE) gamma-ray emission was detected and upper limits above the VERITAS threshold energy are calculated. The VERITAS upper limits are corrected for gamma-ray extinction by the extragalactic background light and interpreted in the context of thekeV emission detected by Swift. For some bursts the VHE emission must have less power than thekeV emission, placing constraints on inverse Compton models of VHE emission.

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KW - gamma-ray burst: general

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U2 - 10.1088/0004-637X/743/1/62

DO - 10.1088/0004-637X/743/1/62

M3 - Article

AN - SCOPUS:82255189644

SN - 0004-637X

VL - 743

JO - Astrophysical Journal

JF - Astrophysical Journal

IS - 1

M1 - 62

ER -

Veritas observations of gamma-ray bursts detected by Swift

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