A Survey of Unidentified EGRET Sources at Very High Energies

S. J. Fegan; H. M. Badran; I. H. Bond; P. J. Boyle; S. M. Bradbury; J. H. Buckley; D. A. Carter-Lewis; M. Catanese; O. Celik; W. Cui; M. Daniel; M. D'Vali; I. de la Calle Perez; C. Duke; A. Falcone; D. J. Fegan; J. P. Finley; L. F. Fortson; J. A. Gaidos; S. Gammell; K. Gibbs; G. H. Gillanders; J. Grube; J. Hall; T. A. Hall; D. Hanna; A. M. Hillas; J. Holder; D. Horan; A. Jarvis; M. Jordan; G. E. Kenny; M. Kertzman; D. Kieda; J. Kildea; J. Knapp; K. Kosack; H. Krawczynski; F. Krennrich; M. J. Lang; S. Le Bohec; R. W. Lessard; E. Linton; J. Lloyd-Evans; A. Milovanovic; J. McEnery; P. Moriarty; R. Mukherjee; D. Muller; T. Nagai; S. Nolan; R. A. Ong; R. Pallassini; D. Petry; B. Power-Mooney; J. Quinn; M. Quinn; K. Ragan; P. Rebillot; P. T. Reynolds; H. J. Rose; M. Schroedter; G. H. Sembroski; S. P. Swordy; A. Syson; V. V. Vassiliev; S. P. Wakely; G. Walker; T. C. Weekes; J. Zweerink

doi:10.1086/429123

A Survey of Unidentified EGRET Sources at Very High Energies

S. J. Fegan, H. M. Badran, I. H. Bond, P. J. Boyle, S. M. Bradbury, J. H. Buckley, D. A. Carter-Lewis, M. Catanese, O. Celik, W. Cui, M. Daniel, M. D'Vali, I. de la Calle Perez, C. Duke, A. Falcone, D. J. Fegan, J. P. Finley, L. F. Fortson, J. A. Gaidos, S. GammellK. Gibbs, G. H. Gillanders, J. Grube, J. Hall, T. A. Hall, D. Hanna, A. M. Hillas, J. Holder, D. Horan, A. Jarvis, M. Jordan, G. E. Kenny, M. Kertzman, D. Kieda, J. Kildea, J. Knapp, K. Kosack, H. Krawczynski, F. Krennrich, M. J. Lang, S. Le Bohec, R. W. Lessard, E. Linton, J. Lloyd-Evans, A. Milovanovic, J. McEnery, P. Moriarty, R. Mukherjee, D. Muller, T. Nagai, S. Nolan, R. A. Ong, R. Pallassini, D. Petry, B. Power-Mooney, J. Quinn, M. Quinn, K. Ragan, P. Rebillot, P. T. Reynolds, H. J. Rose, M. Schroedter, G. H. Sembroski, S. P. Swordy, A. Syson, V. V. Vassiliev, S. P. Wakely, G. Walker, T. C. Weekes, J. Zweerink

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Abstract

The Whipple Observatory 10 m γ-ray telescope has been used to survey the error boxes of EGRET unidentified sources in an attempt to find counterparts at energies of 350 GeV and above. Twenty-one unidentified sources detected by EGRET (more than 10% of the total number) have been included in this survey. In no case is a statistically significant signal found in the EGRET error box, which implies that, at least for this sample, the γ-ray spectra of these sources steepen between 100 MeV and 350 GeV. For each EGRET source location, we list candidate associations and derive upper limits on the integral γ-ray flux above 350 GeV....

Original language	English
Journal	The Astrophysical Journal
DOIs	https://doi.org/10.1086/429123
Publication status	Published - May 2005

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10.1086/429123

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Fegan, S. J., Badran, H. M., Bond, I. H., Boyle, P. J., Bradbury, S. M., Buckley, J. H., Carter-Lewis, D. A., Catanese, M., Celik, O., Cui, W., Daniel, M., D'Vali, M., de la Calle Perez, I., Duke, C., Falcone, A., Fegan, D. J., Finley, J. P., Fortson, L. F., Gaidos, J. A., ... Zweerink, J. (2005). A Survey of Unidentified EGRET Sources at Very High Energies. The Astrophysical Journal. https://doi.org/10.1086/429123

@article{303b64a8beb04f61815f624728d3b3f6,

title = "A Survey of Unidentified EGRET Sources at Very High Energies",

abstract = "The Whipple Observatory 10 m γ-ray telescope has been used to survey the error boxes of EGRET unidentified sources in an attempt to find counterparts at energies of 350 GeV and above. Twenty-one unidentified sources detected by EGRET (more than 10\% of the total number) have been included in this survey. In no case is a statistically significant signal found in the EGRET error box, which implies that, at least for this sample, the γ-ray spectra of these sources steepen between 100 MeV and 350 GeV. For each EGRET source location, we list candidate associations and derive upper limits on the integral γ-ray flux above 350 GeV....",

author = "Fegan, \{S. J.\} and Badran, \{H. M.\} and Bond, \{I. H.\} and Boyle, \{P. J.\} and Bradbury, \{S. M.\} and Buckley, \{J. H.\} and Carter-Lewis, \{D. A.\} and M. Catanese and O. Celik and W. Cui and M. Daniel and M. D'Vali and \{de la Calle Perez\}, I. and C. Duke and A. Falcone and Fegan, \{D. J.\} and Finley, \{J. P.\} and Fortson, \{L. F.\} and Gaidos, \{J. A.\} and S. Gammell and K. Gibbs and Gillanders, \{G. H.\} and J. Grube and J. Hall and Hall, \{T. A.\} and D. Hanna and Hillas, \{A. M.\} and J. Holder and D. Horan and A. Jarvis and M. Jordan and Kenny, \{G. E.\} and M. Kertzman and D. Kieda and J. Kildea and J. Knapp and K. Kosack and H. Krawczynski and F. Krennrich and Lang, \{M. J.\} and \{Le Bohec\}, S. and Lessard, \{R. W.\} and E. Linton and J. Lloyd-Evans and A. Milovanovic and J. McEnery and P. Moriarty and R. Mukherjee and D. Muller and T. Nagai and S. Nolan and Ong, \{R. A.\} and R. Pallassini and D. Petry and B. Power-Mooney and J. Quinn and M. Quinn and K. Ragan and P. Rebillot and Reynolds, \{P. T.\} and Rose, \{H. J.\} and M. Schroedter and Sembroski, \{G. H.\} and Swordy, \{S. P.\} and A. Syson and Vassiliev, \{V. V.\} and Wakely, \{S. P.\} and G. Walker and Weekes, \{T. C.\} and J. Zweerink",

year = "2005",

month = may,

doi = "10.1086/429123",

language = "English",

journal = "The Astrophysical Journal",

}

Fegan, SJ, Badran, HM, Bond, IH, Boyle, PJ, Bradbury, SM, Buckley, JH, Carter-Lewis, DA, Catanese, M, Celik, O, Cui, W, Daniel, M, D'Vali, M, de la Calle Perez, I, Duke, C, Falcone, A, Fegan, DJ, Finley, JP, Fortson, LF, Gaidos, JA, Gammell, S, Gibbs, K, Gillanders, GH, Grube, J, Hall, J, Hall, TA, Hanna, D, Hillas, AM, Holder, J, Horan, D, Jarvis, A, Jordan, M, Kenny, GE, Kertzman, M, Kieda, D, Kildea, J, Knapp, J, Kosack, K, Krawczynski, H, Krennrich, F, Lang, MJ, Le Bohec, S, Lessard, RW, Linton, E, Lloyd-Evans, J, Milovanovic, A, McEnery, J, Moriarty, P, Mukherjee, R, Muller, D, Nagai, T, Nolan, S, Ong, RA, Pallassini, R, Petry, D, Power-Mooney, B, Quinn, J, Quinn, M, Ragan, K, Rebillot, P, Reynolds, PT, Rose, HJ, Schroedter, M, Sembroski, GH, Swordy, SP, Syson, A, Vassiliev, VV, Wakely, SP, Walker, G, Weekes, TC & Zweerink, J 2005, 'A Survey of Unidentified EGRET Sources at Very High Energies', The Astrophysical Journal. https://doi.org/10.1086/429123

TY - JOUR

T1 - A Survey of Unidentified EGRET Sources at Very High Energies

AU - Fegan, S. J.

AU - Badran, H. M.

AU - Bond, I. H.

AU - Boyle, P. J.

AU - Bradbury, S. M.

AU - Buckley, J. H.

AU - Carter-Lewis, D. A.

AU - Catanese, M.

AU - Celik, O.

AU - Cui, W.

AU - Daniel, M.

AU - D'Vali, M.

AU - de la Calle Perez, I.

AU - Duke, C.

AU - Falcone, A.

AU - Fegan, D. J.

AU - Finley, J. P.

AU - Fortson, L. F.

AU - Gaidos, J. A.

AU - Gammell, S.

AU - Gibbs, K.

AU - Gillanders, G. H.

AU - Grube, J.

AU - Hall, J.

AU - Hall, T. A.

AU - Hanna, D.

AU - Hillas, A. M.

AU - Holder, J.

AU - Horan, D.

AU - Jarvis, A.

AU - Jordan, M.

AU - Kenny, G. E.

AU - Kertzman, M.

AU - Kieda, D.

AU - Kildea, J.

AU - Knapp, J.

AU - Kosack, K.

AU - Krawczynski, H.

AU - Krennrich, F.

AU - Lang, M. J.

AU - Le Bohec, S.

AU - Lessard, R. W.

AU - Linton, E.

AU - Lloyd-Evans, J.

AU - Milovanovic, A.

AU - McEnery, J.

AU - Moriarty, P.

AU - Mukherjee, R.

AU - Muller, D.

AU - Nagai, T.

AU - Nolan, S.

AU - Ong, R. A.

AU - Pallassini, R.

AU - Petry, D.

AU - Power-Mooney, B.

AU - Quinn, J.

AU - Quinn, M.

AU - Ragan, K.

AU - Rebillot, P.

AU - Reynolds, P. T.

AU - Rose, H. J.

AU - Schroedter, M.

AU - Sembroski, G. H.

AU - Swordy, S. P.

AU - Syson, A.

AU - Vassiliev, V. V.

AU - Wakely, S. P.

AU - Walker, G.

AU - Weekes, T. C.

AU - Zweerink, J.

PY - 2005/5

Y1 - 2005/5

N2 - The Whipple Observatory 10 m γ-ray telescope has been used to survey the error boxes of EGRET unidentified sources in an attempt to find counterparts at energies of 350 GeV and above. Twenty-one unidentified sources detected by EGRET (more than 10% of the total number) have been included in this survey. In no case is a statistically significant signal found in the EGRET error box, which implies that, at least for this sample, the γ-ray spectra of these sources steepen between 100 MeV and 350 GeV. For each EGRET source location, we list candidate associations and derive upper limits on the integral γ-ray flux above 350 GeV....

AB - The Whipple Observatory 10 m γ-ray telescope has been used to survey the error boxes of EGRET unidentified sources in an attempt to find counterparts at energies of 350 GeV and above. Twenty-one unidentified sources detected by EGRET (more than 10% of the total number) have been included in this survey. In no case is a statistically significant signal found in the EGRET error box, which implies that, at least for this sample, the γ-ray spectra of these sources steepen between 100 MeV and 350 GeV. For each EGRET source location, we list candidate associations and derive upper limits on the integral γ-ray flux above 350 GeV....

U2 - 10.1086/429123

DO - 10.1086/429123

M3 - Article

JO - The Astrophysical Journal

JF - The Astrophysical Journal

ER -

A Survey of Unidentified EGRET Sources at Very High Energies

Abstract

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