Observation of M87 at 400 GeV with the whipple 10 meter telescope

S. Le Bohec; 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; S. 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; E. Linton; J. Lloyd-Evans; A. Milovanovic; P. Moriarty; D. Müller; 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:10.1086/421697

Observation of M87 at 400 GeV with the whipple 10 meter telescope

S. Le Bohec
, 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
, S. 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, E. Linton, J. Lloyd-Evans, A. Milovanovic, P. Moriarty, D. Müller, 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

Ames Laboratory
Iowa State University
Physics Department
Tanta University
Department of Physics
University of Leeds
University of Chicago
Physics Department
Washington University in St. Louis
Center for Astrophysics | Harvard & Smithsonian
Department of Physics
University of California, Los Angeles
Department of Physics
Purdue University
Department of Physics
Grinnell College
Experimental Physics Department
National University of Ireland
Physics Department
IDA Business Park
High Energy Astrophysics Institute
University of Utah
University of Arkansas
Department of Physics
McGill University
Department of Physics
DePauw University
School of Science
Galway-Mayo Institute of Technology
Biochemical and Environmental Engineering
GSFC Laboratory for Atmopsheres
Department of Applied Physics
Cork Institute of Technology

Research output: Contribution to journal › Article › peer-review

18 Citations (Scopus)

Abstract

We present results from observations taken with the Whipple 10 m very high energy γ-ray telescope with maximal sensitivity at 400 GeV during 39 hr between 2000 and 2003 in the direction of the giant radio galaxy M87. Using the entire data set, we derive a 99% confidence level upper limit on the flux of γ-ray emission above 400 GeV from M87 to be ≤6.9 × 10 ^-12 cm^-2 s^-1. This suggests variability at the 90% confidence level when compared to the flux measured by the HEGRA collaboration in 1999 if the differential spectrum is steeper than a power law of index 3.75. Our search for a correlation between the Rossi X-Ray Timing Explorer all-sky monitor observation and a potential γ-ray signal is inconclusive.

Original language	English
Pages (from-to)	156-160
Number of pages	5
Journal	Astrophysical Journal
Volume	610
Issue number	1 I
DOIs	https://doi.org/10.1086/421697
Publication status	Published - 20 Jul 2004
Externally published	Yes

Keywords

Galaxies: active
Galaxies: individual (M87)
Gamma rays: observations

Access to Document

10.1086/421697

Cite this

Le Bohec, S., 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., Fegan, S. J., Finley, J. P., Fortson, L. F., ... Zweerink, J. (2004). Observation of M87 at 400 GeV with the whipple 10 meter telescope. Astrophysical Journal, 610(1 I), 156-160. https://doi.org/10.1086/421697

@article{c01d398bb52c4c519d62e8b67bd8b155,

title = "Observation of M87 at 400 GeV with the whipple 10 meter telescope",

abstract = "We present results from observations taken with the Whipple 10 m very high energy γ-ray telescope with maximal sensitivity at 400 GeV during 39 hr between 2000 and 2003 in the direction of the giant radio galaxy M87. Using the entire data set, we derive a 99\% confidence level upper limit on the flux of γ-ray emission above 400 GeV from M87 to be ≤6.9 {\texttimes} 10 -12 cm-2 s-1. This suggests variability at the 90\% confidence level when compared to the flux measured by the HEGRA collaboration in 1999 if the differential spectrum is steeper than a power law of index 3.75. Our search for a correlation between the Rossi X-Ray Timing Explorer all-sky monitor observation and a potential γ-ray signal is inconclusive.",

keywords = "Galaxies: active, Galaxies: individual (M87), Gamma rays: observations",

author = "\{Le Bohec\}, S. 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 Fegan, \{S. 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 E. Linton and J. Lloyd-Evans and A. Milovanovic and P. Moriarty and D. M{\"u}ller 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 = "2004",

month = jul,

day = "20",

doi = "10.1086/421697",

language = "English",

volume = "610",

pages = "156--160",

journal = "Astrophysical Journal",

issn = "0004-637X",

publisher = "American Astronomical Society",

number = "1 I",

}

Le Bohec, S, 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, Fegan, SJ, 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, Linton, E, Lloyd-Evans, J, Milovanovic, A, Moriarty, P, Müller, 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 2004, 'Observation of M87 at 400 GeV with the whipple 10 meter telescope', Astrophysical Journal, vol. 610, no. 1 I, pp. 156-160. https://doi.org/10.1086/421697

TY - JOUR

T1 - Observation of M87 at 400 GeV with the whipple 10 meter telescope

AU - Le Bohec, S.

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 - Fegan, S. 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 - Linton, E.

AU - Lloyd-Evans, J.

AU - Milovanovic, A.

AU - Moriarty, P.

AU - Müller, 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 - 2004/7/20

Y1 - 2004/7/20

N2 - We present results from observations taken with the Whipple 10 m very high energy γ-ray telescope with maximal sensitivity at 400 GeV during 39 hr between 2000 and 2003 in the direction of the giant radio galaxy M87. Using the entire data set, we derive a 99% confidence level upper limit on the flux of γ-ray emission above 400 GeV from M87 to be ≤6.9 × 10 -12 cm-2 s-1. This suggests variability at the 90% confidence level when compared to the flux measured by the HEGRA collaboration in 1999 if the differential spectrum is steeper than a power law of index 3.75. Our search for a correlation between the Rossi X-Ray Timing Explorer all-sky monitor observation and a potential γ-ray signal is inconclusive.

AB - We present results from observations taken with the Whipple 10 m very high energy γ-ray telescope with maximal sensitivity at 400 GeV during 39 hr between 2000 and 2003 in the direction of the giant radio galaxy M87. Using the entire data set, we derive a 99% confidence level upper limit on the flux of γ-ray emission above 400 GeV from M87 to be ≤6.9 × 10 -12 cm-2 s-1. This suggests variability at the 90% confidence level when compared to the flux measured by the HEGRA collaboration in 1999 if the differential spectrum is steeper than a power law of index 3.75. Our search for a correlation between the Rossi X-Ray Timing Explorer all-sky monitor observation and a potential γ-ray signal is inconclusive.

KW - Galaxies: active

KW - Galaxies: individual (M87)

KW - Gamma rays: observations

U2 - 10.1086/421697

DO - 10.1086/421697

M3 - Article

AN - SCOPUS:4444240627

SN - 0004-637X

VL - 610

SP - 156

EP - 160

JO - Astrophysical Journal

JF - Astrophysical Journal

IS - 1 I

ER -

Observation of M87 at 400 GeV with the whipple 10 meter telescope

Abstract

Keywords

Access to Document

Fingerprint

Cite this