Detection of TeV gamma rays from the BL Lacertae object IES 1959+650 with the Whipple 10 meter telescope

J. Holder; I. H. Bond; P. J. Boyle; S. M. Bradbury; J. H. Bucekly; D. A. Carter-Lewis; W. Cui; C. Dowdall; C. Duke; I. De La Calle Perez; A. Falcone; D. J. Fegan; S. J. Fegan; J. P. Finley; L. Fortson; J. A. Gaidos; K. Gibbs; S. Gammell; J. Hall; T. A. Hall; A. M. Hillas; D. Horan; M. Jordan; M. Kertzman; D. Kieda; J. Kildea; J. Knapp; K. Kosack; H. Krawczynski; F. Krennrich; S. LeBohec; E. T. Linton; J. Lloyd-Evans; P. Moriarty; D. Müller; T. N. Nagai; R. Ong; M. Page; R. Pallassini; D. Petry; B. Power-Mooney; J. Quinn; P. Rebillot; P. T. Reynolds; H. J. Rose; M. Schroedter; G. H. Sembroski; S. P. Swordy; V. V. Vassiliev; S. P. Wakely

doi:10.1086/367816

Detection of TeV gamma rays from the BL Lacertae object IES 1959+650 with the Whipple 10 meter telescope

J. Holder, I. H. Bond, P. J. Boyle, S. M. Bradbury, J. H. Bucekly, D. A. Carter-Lewis, W. Cui, C. Dowdall, C. Duke, I. De La Calle Perez, A. Falcone, D. J. Fegan, S. J. Fegan, J. P. Finley, L. Fortson, J. A. Gaidos, K. Gibbs, S. Gammell, J. Hall, T. A. HallA. M. Hillas, D. Horan, M. Jordan, M. Kertzman, D. Kieda, J. Kildea, J. Knapp, K. Kosack, H. Krawczynski, F. Krennrich, S. LeBohec, E. T. Linton, J. Lloyd-Evans, P. Moriarty, D. Müller, T. N. Nagai, R. Ong, M. Page, R. Pallassini, D. Petry, B. Power-Mooney, J. Quinn, P. Rebillot, P. T. Reynolds, H. J. Rose, M. Schroedter, G. H. Sembroski, S. P. Swordy, V. V. Vassiliev, S. P. Wakely

Physics and Astronomy (Twin Cities)

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Abstract

We present the first strong detection of very high energy γ-rays from the close (z = 0.048) X-ray-selected BL Lacertae object 1ES 1959-650. Observations were made with the Whipple 10 m telescope on Mount Hopkins, Arizona, using the atmospheric Cerenkov imaging technique. The flux between 2002 May and July was highly variable, with a mean of 0.64 7plusmn; 0.03 times the steady flux from the Crab Nebula and reaching a maximum of 5 crab, with variability on timescales as short as 7 hr.

Original language	English (US)
Pages (from-to)	L9-L12
Journal	Astrophysical Journal
Volume	583
Issue number	1 II
DOIs	https://doi.org/10.1086/367816
State	Published - Jan 20 2003

Bibliographical note

Funding Information:
The VERITAS Collaboration is supported by the US Department of Energy, the NSF, the Smithsonian Institution, PPARC (UK), and Enterprise Ireland.

Keywords

Gamma rays: observations

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Holder, J., Bond, I. H., Boyle, P. J., Bradbury, S. M., Bucekly, J. H., Carter-Lewis, D. A., Cui, W., Dowdall, C., Duke, C., De La Calle Perez, I., Falcone, A., Fegan, D. J., Fegan, S. J., Finley, J. P., Fortson, L., Gaidos, J. A., Gibbs, K., Gammell, S., Hall, J., ... Wakely, S. P. (2003). Detection of TeV gamma rays from the BL Lacertae object IES 1959+650 with the Whipple 10 meter telescope. Astrophysical Journal, 583(1 II), L9-L12. https://doi.org/10.1086/367816

Holder, J, Bond, IH, Boyle, PJ, Bradbury, SM, Bucekly, JH, Carter-Lewis, DA, Cui, W, Dowdall, C, Duke, C, De La Calle Perez, I, Falcone, A, Fegan, DJ, Fegan, SJ, Finley, JP, Fortson, L, Gaidos, JA, Gibbs, K, Gammell, S, Hall, J, Hall, TA, Hillas, AM, Horan, D, Jordan, M, Kertzman, M, Kieda, D, Kildea, J, Knapp, J, Kosack, K, Krawczynski, H, Krennrich, F, LeBohec, S, Linton, ET, Lloyd-Evans, J, Moriarty, P, Müller, D, Nagai, TN, Ong, R, Page, M, Pallassini, R, Petry, D, Power-Mooney, B, Quinn, J, Rebillot, P, Reynolds, PT, Rose, HJ, Schroedter, M, Sembroski, GH, Swordy, SP, Vassiliev, VV & Wakely, SP 2003, 'Detection of TeV gamma rays from the BL Lacertae object IES 1959+650 with the Whipple 10 meter telescope', Astrophysical Journal, vol. 583, no. 1 II, pp. L9-L12. https://doi.org/10.1086/367816

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abstract = "We present the first strong detection of very high energy γ-rays from the close (z = 0.048) X-ray-selected BL Lacertae object 1ES 1959-650. Observations were made with the Whipple 10 m telescope on Mount Hopkins, Arizona, using the atmospheric Cerenkov imaging technique. The flux between 2002 May and July was highly variable, with a mean of 0.64 7plusmn; 0.03 times the steady flux from the Crab Nebula and reaching a maximum of 5 crab, with variability on timescales as short as 7 hr.",

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author = "J. Holder and Bond, {I. H.} and Boyle, {P. J.} and Bradbury, {S. M.} and Bucekly, {J. H.} and Carter-Lewis, {D. A.} and W. Cui and C. Dowdall and C. Duke and {De La Calle Perez}, I. and A. Falcone and Fegan, {D. J.} and Fegan, {S. J.} and Finley, {J. P.} and L. Fortson and Gaidos, {J. A.} and K. Gibbs and S. Gammell and J. Hall and Hall, {T. A.} and Hillas, {A. M.} and D. Horan and M. Jordan and M. Kertzman and D. Kieda and J. Kildea and J. Knapp and K. Kosack and H. Krawczynski and F. Krennrich and S. LeBohec and Linton, {E. T.} and J. Lloyd-Evans and P. Moriarty and D. M{\"u}ller and Nagai, {T. N.} and R. Ong and M. Page and R. Pallassini and D. Petry and B. Power-Mooney and J. Quinn and P. Rebillot and Reynolds, {P. T.} and Rose, {H. J.} and M. Schroedter and Sembroski, {G. H.} and Swordy, {S. P.} and Vassiliev, {V. V.} and Wakely, {S. P.}",

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AU - Holder, J.

AU - Bond, I. H.

AU - Boyle, P. J.

AU - Bradbury, S. M.

AU - Bucekly, J. H.

AU - Carter-Lewis, D. A.

AU - Cui, W.

AU - Dowdall, C.

AU - Duke, C.

AU - De La Calle Perez, I.

AU - Falcone, A.

AU - Fegan, D. J.

AU - Fegan, S. J.

AU - Finley, J. P.

AU - Fortson, L.

AU - Gaidos, J. A.

AU - Gibbs, K.

AU - Gammell, S.

AU - Hall, J.

AU - Hall, T. A.

AU - Hillas, A. M.

AU - Horan, D.

AU - Jordan, M.

AU - Kertzman, M.

AU - Kieda, D.

AU - Kildea, J.

AU - Knapp, J.

AU - Kosack, K.

AU - Krawczynski, H.

AU - Krennrich, F.

AU - LeBohec, S.

AU - Linton, E. T.

AU - Lloyd-Evans, J.

AU - Moriarty, P.

AU - Müller, D.

AU - Nagai, T. N.

AU - Ong, R.

AU - Page, M.

AU - Pallassini, R.

AU - Petry, D.

AU - Power-Mooney, B.

AU - Quinn, J.

AU - Rebillot, P.

AU - Reynolds, P. T.

AU - Rose, H. J.

AU - Schroedter, M.

AU - Sembroski, G. H.

AU - Swordy, S. P.

AU - Vassiliev, V. V.

AU - Wakely, S. P.

N1 - Funding Information: The VERITAS Collaboration is supported by the US Department of Energy, the NSF, the Smithsonian Institution, PPARC (UK), and Enterprise Ireland.

PY - 2003/1/20

Y1 - 2003/1/20

N2 - We present the first strong detection of very high energy γ-rays from the close (z = 0.048) X-ray-selected BL Lacertae object 1ES 1959-650. Observations were made with the Whipple 10 m telescope on Mount Hopkins, Arizona, using the atmospheric Cerenkov imaging technique. The flux between 2002 May and July was highly variable, with a mean of 0.64 7plusmn; 0.03 times the steady flux from the Crab Nebula and reaching a maximum of 5 crab, with variability on timescales as short as 7 hr.

AB - We present the first strong detection of very high energy γ-rays from the close (z = 0.048) X-ray-selected BL Lacertae object 1ES 1959-650. Observations were made with the Whipple 10 m telescope on Mount Hopkins, Arizona, using the atmospheric Cerenkov imaging technique. The flux between 2002 May and July was highly variable, with a mean of 0.64 7plusmn; 0.03 times the steady flux from the Crab Nebula and reaching a maximum of 5 crab, with variability on timescales as short as 7 hr.

KW - Gamma rays: observations

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DO - 10.1086/367816

M3 - Article

AN - SCOPUS:0242333383

SN - 0004-637X

VL - 583

SP - L9-L12

JO - Astrophysical Journal

JF - Astrophysical Journal

IS - 1 II

ER -

Detection of TeV gamma rays from the BL Lacertae object IES 1959+650 with the Whipple 10 meter telescope

Abstract

Bibliographical note

Keywords

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