VERITAS Upper Limit on the VHE Emission from the Radio Galaxy NGC 1275 (2009)
Aliu, E., Arlen, T., Aune, T., Bautista, M., Beilicke, M., ...
The recent detection by the Fermi gamma-ray space telescope of high-energy gamma-rays from the radio galaxy NGC 1275 makes the observation of the very high energy (VHE: E > 100 GeV) part of its...
A connection between star formation activity and cosmic rays in the starburst galaxy M 82 (2009)
Acciari, V. A., Aliu, E., Arlen, T., Aune, T., Bautista, M., Beilicke, M., ...
Although Galactic cosmic rays (protons and nuclei) are widely believed to be dominantly accelerated by the winds and supernovae of massive stars, definitive evidence of this origin remains elusive...
Multiwavelength observations of a TeV-Flare from W Comae (2009)
Aliu, E., Aune, T., Beilicke, M., Benbow, W., Bottcher, M., ...
We report results from an intensive multiwavelength campaign on the intermediate-frequency-peaked BL Lacertae object W Com (z=0.102) during a strong outburst of very high energy gamma-ray emission in...
MULTIWAVELENGTH OBSERVATIONS OF LS I+61 degrees 303 WITH VERITAS, SWIFT, AND RXTE (2009)
Acciari, V. A., Aliu, E., Arlen, T., Bautista, M., Beilicke, M., Benbow, W., ...
Observation of Extended VHE Emission from the Supernova Remnant IC 443 with VERITAS (2009)
Aliu, E., Arlen, T., Aune, T., Bautista, M., Beilicke, M., ...
We present evidence that the very-high-energy (VHE, E > 100 GeV) gamma-ray emission coincident with the supernova remnant IC 443 is extended. IC 443 contains one of the best-studied sites of...
Aliu, E., Arlen, T., Beilicke, M., Benbow, W., Boltuch, D., ...
HESS J0632+057 is one of only two unidentified very-high-energy gamma-ray sources which appear to be point-like within experimental resolution. It is possibly associated with the massive Be star MWC...
Multiwavelength Observations of LS I +61 303 with VERITAS, Swift and RXTE (2009)
Acciari, VERITAS Collaboration:V. A., Aliu, E., Arlen, T., Bautista, M., Beilicke, M., Benbow, W., ...
We present results from a long-term monitoring campaign on the TeV binary LSI +61 303 with VERITAS at energies above 500 GeV, and in the 2-10 keV hard X-ray bands with RXTE and Swift, sampling nine...
VERITAS OBSERVATIONS OF A VERY HIGH ENERGY gamma-RAY FLARE FROM THE BLAZAR 3C 66A (2009)
Acciari, V. A., Aliu, E., Arlen, T., Beilicke, M., Benbow, W., Bottcher, M., ...
VERITAS Observations of a Very High Energy Gamma-ray Flare from the Blazar 3C 66A (2009)
Aliu, E., Arlen, T., Beilicke, M., Benbow, W., Bottcher, M., ...
The intermediate-frequency peaked BL Lacertae (IBL) object 3C 66A is detected during 2007 - 2008 in VHE (very high energy: E > 100 GeV) gamma-rays with the VERITAS stereoscopic array of imaging...
VERITAS observations of the BL Lac 1ES 1218+304 (2009)
Aliu, E., Arlen, T., Beilicke, M., Benbow, W., Bradbury, S. M., ...
The VERITAS collaboration reports the detection of very-high-energy (VHE) gamma-ray emission from the high-frequency-peaked BL Lac object 1ES 1218+304 located at a redshift of z=0.182. A gamma-ray...
Multiwavelength Observations of Markarian 421 in 2005 - 2006 (2009)
Horan, D., Acciari, V. A., Bradbury, S. M., Buckley, J. H., Bugaev, V., Byrum, K. L., ...
Since September 2005, the Whipple 10m Gamma-ray Telescope has been operated primarily as a blazar monitor. The five Northern Hemisphere blazars that have already been detected at the Whipple...
Discovery of Very High Energy Gamma-Ray Radiation from the Bl Lac 1es 0806+524 (2009)
Acciari, V., Aliu, E., Arlen, T., Bautista, M., Beilicke, M., Benbow, W., ...
Discovery of Very High-Energy Gamma-Ray Radiation from the BL Lac 1ES 0806+524 (2008)
Aliu, E., Arlen, T., Bautista, M., Beilicke, M., Benbow, W., ...
The high-frequency-peaked BL-Lacertae object \objectname{1ES 0806+524}, at redshift z=0.138, was observed in the very-high-energy (VHE) gamma-ray regime by VERITAS between November 2006 and April...
Status of the VERITAS Observatory (2008)
Holder, J., Acciari, V. A., Aliu, E., Arlen, T., Beilicke, M., Benbow, W., ...
VERITAS, an Imaging Atmospheric Cherenkov Telescope (IACT) system for gammma-ray astronomy in the GeV-TeV range, has recently completed its first season of observations with a full array of four...
Aliu, E., Beilicke, M., Benbow, W., Boettcher, M., Bradbury, S. M., ...
We report the detection of very high-energy gamma-ray emission from the intermediate-frequency-peaked BL Lacertae object W Comae (z=0.102) by VERITAS. The source was observed between January and...
VERITAS Observations of the gamma-Ray Binary LS I +61 303 (2008)
Acciari, V. A., Beilicke, M., Blaylock, G., Bradbury, S. M., Buckley, J. H., Bugaev, V., ...
LS I +61 303 is one of only a few high-mass X-ray binaries currently detected at high significance in very high energy gamma-rays. The system was observed over several orbital cycles (between...
Observation of gamma-ray emission from the galaxy M87 above 250 GeV with VERITAS (2008)
Acciari, V. A., Beilicke, M., Blaylock, G., Bradbury, S. M., Buckley, J. H., Bugaev, V., ...
The multiwavelength observation of the nearby radio galaxy M87 provides a unique opportunity to study in detail processes occurring in Active Galactic Nuclei from radio waves to TeV gamma-rays. Here...
A Search for Dark Matter Annihilation with the Whipple 10m Telescope (2008)
Wood, M., Blaylock, G., Bradbury, S. M., Buckley, J. H., Byrum, K. L., Chow, Y. C. K., ...
We present observations of the dwarf galaxies Draco and Ursa Minor, the local group galaxies M32 and M33, and the globular cluster M15 conducted with the Whipple 10m gamma-ray telescope to search for...
Veritas observations of the gamma-ray binary LS I+61 303 (2008)
Acciari, V. A., Beilicke, M., Blaylock, G., Bradbury, S. M., Buckley, J. H., Bugaev, V., ...
LS I +61 303 is one of only a few high-mass X-ray binaries currently detected at high significance in very high energy gamma-rays. The system was observed over several orbital cycles ( between 2006...
Observation of gamma-ray emission from the galaxy M87 above 250 GeV with VERITAS (2008)
Acciari, V. A., Beilicke, M., Blaylock, G., Bradbury, S. M., Buckley, J. H., Bugaev, V., ...
The multiwavelength observation of the nearby radio galaxy M87 provides a unique opportunity to study in detail processes occurring in active galactic nuclei from radio waves to TeV gamma-rays. Here...
Fossati, G., Buckley, J. H., Bond, I. H., Bradbury, S. M., Carter-Lewis, D. A., Chow, Y. C. K., ...
We present a detailed analysis of week-long simultaneous observations of the blazar Mrk 421 at 2-60 keV X-rays (RXTE) and TeV gamma-rays (Whipple and HEGRA) in 2001. Accompanying optical monitoring...
A search for dark matter annihilation with the whipple 10 m telescope (2008)
Wood, M., Blaylock, G., Bradbury, S. M., Buckley, J. H., Byrum, K. L., Chow, Y. C. K., ...
We present observations of the dwarf galaxies Draco and Ursa Minor, the Local Group galaxies M32 and M33, and the globular cluster M15 conducted with the Whipple 10 m gamma-ray telescope to search...
First results from VERITAS (2008)
Hanna, D., Acciari, V. A., Amini, R., Badran, H. M., Blaylock, G., Bradbury, S. M., ...
VERITAS is an array of four, 12-m-diameter, Cherenkov telescopes, designed to explore the very-high-energy gamma-ray sky in the energy band between 100 GeV and 50 TeV. Its construction and...
Acciari, V. A., Aliu, E., Beilicke, M., Benbow, W., Bottcher, M., Bradbury, S. M., ...
We report the detection of very high energy gamma- ray emission from the intermediate- frequency- peaked BL Lacertae object W Comae (z = 0.102) by VERITAS. The source was observed between 2008...
Fl-Radiation From, D. Petry, S. M. Bradbury, A. Konopelko, J. Fernandez, F. Aharonian, ...
A detection of fl-rays from Mkn 421 at energies above 1 TeV is reported. The preliminary results presented here are based on 37.2 hours of ON-Source observations with Telescope 1 (CT1) and 60.0 hours...
Measurement of the flux, spectrum, and variability of TeV (2007)
F. Aharonian, A. G. Akhperjanian, J. A. Barrio, K. Bernlohr, S. M. Bradbury, ...
. Between March 16, 1997 and April 14, 1997, a high flux level of TeV fl-rays was observed from Mkn 501, using the HEGRA stereoscopic system of four imaging Cherenkov telescopes. The flux level...
Measurement of the flux, spectrum, and variability of TeV (2007)
Fl-Rays From, F. Aharonian, A. G. Akhperjanian, J. A. Barrio, K. Bernlohr, S. M. Bradbury, ...
. Between March 16, 1997 and April 14, 1997, a high flux level of TeV fl-rays was observed from Mkn 501, using the HEGRA stereoscopic system of four imaging Cherenkov telescopes. The flux level...
Fl-Rays From, D. Petry, S. M. Bradbury, A. Konopelko, J. Fernandez, F. Aharonian, ...
. A detection of fl-rays from Mkn 421 at energies above 1 TeV is reported, based on observations made in December 1994 - May 1995 with the first two HEGRA Cherenkov telescopes. From the image...
Search for Gamma-Ray Bursts above 20 TeV with the HEGRA AIROBICC Cherenkov Array (2007)
The Hegra, L. Padilla, L. Padilla, Padilla Gonz'alez, J. C. Gonz'alez, F. Aharonian, ...
A search for gamma-ray bursts (GRBs) above 20 TeV within the field of view (1 sr) of the HEGRA AIROBICC Cherenkov array (29 ffi N, 18 ffi W, 2200 m a.s.l.) has been performed using data taken between...
Fossati, G., Buckley, J. H., Bond, I. H., Bradbury, S. M., Carter-Lewis, D. A., Chow, Y. C. K., ...
(Abridged) We present a detailed analysis of week-long simultaneous observations of the blazar Mrk421 at 2-60 keV X-rays (RXTE) and TeV gamma-rays (Whipple and HEGRA) in 2001. The unprecedented...
Multiwavelength Observations of 1ES 1959+650, One Year After the Strong Outburst of 2002 (2007)
Gutierrez, K., Badran, H. M., Bradbury, S. M., Buckley, J. H., Celik, O., Chow, Y. C., ...
In April-May 2003, the blazar 1ES 1959+650 showed an increased level of X-ray activity. This prompted a multiwavelength observation campaign with the Whipple 10 m gamma-ray telescope, the Rossi X-ray...
The ANTARES Optical Beacon System (2007)
Ageron, M., Aguilar, J.A., Albert, A., Ameli, F., Anghinolfi, M., Anton, G., ...
ANTARES is a neutrino telescope being deployed in the Mediterranean Sea. It consists of a three dimensional array of photomultiplier tubes that can detect the Cherenkov light induced by charged...
Parallel Distribution of Asynchronous Optical Signals (2007)
White, R J, Rose, H J, Bradbury, S M, Marshall, P
An eleven channel digital asynchronous transceiver (DAT) employing parallel optical link technology has been developed for trigger signal distribution across the Very Energetic Radiation Imaging...
Very High Energy Observations of Gamma-Ray Burst Locations with the Whipple Telescope (2007)
Horan, D., Atkins, R. W., Badran, H. M., Blaylock, G., Bradbury, S. M., Buckley, J. H., ...
Gamma-ray burst (GRB) observations at very high energies (VHE, E > 100 GeV) can impose tight constraints on some GRB emission models. Many GRB afterglow models predict a VHE component similar to that...
Transmission of light in deep sea water at the site of the ANTARES neutrino telescope (2007)
Aguilar, J.A., Albert, A., Amram, P., Anghinolfi, M., Anton, G., Anvar, S., ...
The ANTARES neutrino telescope is a large photomultiplier array designed to detect neutrino-induced upward-going muons by their Cherenkov radiation. Understanding the absorption and scattering of...
Transmission of light in deep sea water at the site of the ANTARES neutrino telescope (2007)
Aguilar, J.A., Albert, A., Amram, P., Anghinolfi, M., Anton, G., Anvar, S., ...
The ANTARES neutrino telescope is a large photomultiplier array designed to detect neutrino-induced upward-going muons by their Cherenkov radiation. Understanding the absorption and scattering of...
Transmission of light in deep sea water at the site of the ANTARES neutrino telescope (2007)
Aguilar, J.A., Albert, A., Amram, P., Anghinolfi, M., Anton, G., Anvar, S., ...
The ANTARES neutrino telescope is a large photomultiplier array designed to detect neutrino-induced upward-going muons by their Cherenkov radiation. Understanding the absorption and scattering of...
Very high energy observations of gamma-ray burst locations with the whipple telescope (2007)
Horan, D., Atkins, R. W., Badran, H. M., Blaylock, G., Bradbury, S. M., Buckley, J. H., ...
Gamma-ray burst (GRB) observations at very high energies (VHE; E > 100 GeV) can impose tight constraints on some GRB emission models. Many GRB afterglow models predict a VHE component similar to that...
The Whipple Observatory 10 m gamma-ray telescope, 1997-2006 (2007)
Kildea, J., Atkins, R. W., Badran, H. M., Blaylock, G., Bond, I. H., Bradbury, S. M., ...
Details are presented of the Whipple Observatory's 10 m atmospheric Cherenkov telescope and camera, as it evolved during the period 1997 until 2006. The design of the telescope and camera's optical...
Very high energy observations of gamma-ray burst locations with the whipple telescope (2007)
Horan, D., Atkins, R. W., Badran, H. M., Blaylock, G., Bradbury, S. M., Buckley, J. H., ...
Gamma-ray burst (GRB) observations at very high energies (VHE; E > 100 GeV) can impose tight constraints on some GRB emission models. Many GRB afterglow models predict a VHE component similar to that...
The Whipple Observatory 10 m gamma-ray telescope, 1997-2006 (2007)
Kildea, J., Atkins, R. W., Badran, H. M., Blaylock, G., Bond, I. H., Bradbury, S. M., ...
Study of Large Hemispherical Photomultiplier Tubes for the ANTARES Neutrino Telescope (2006)
Aguilar, J.A., Albert, A., Ameli, F., Amram, P., Anghinolfi, M., Anton, G., ...
The ANTARES neutrino telescope, to be immersed depth in the Mediterranean Sea, will consist of a 3 dimensional matrix of 900 large area photomultiplier tubes housed in pressure resistant glass...
The ANTARES neutrino project (2006)
Sokalski, I., Aguilar, J.A., Alleyne, H., Ameli, F., Amram, P., Anghinolfi, M., ...
The ANTARES neutrino project (2006)
Sokalski, I., Aguilar, J.A., Alleyne, H., Ameli, F., Amram, P., Anghinolfi, M., ...
The ANTARES neutrino project (2006)
Sokalski, I., Aguilar, J.A., Alleyne, H., Ameli, F., Amram, P., Anghinolfi, M., ...
The First VERITAS Telescope (2006)
Holder, J., Atkins, R. W., Badran, H. M., Blaylock, G., Bradbury, S. M., Buckley, J. H., ...
The first atmospheric Cherenkov telescope of VERITAS (the Very Energetic Radiation Imaging Telescope Array System) has been in operation since February 2005. We present here a technical description...
Multiwavelength Observations of 1ES 1959+650, One Year After the Strong Outburst of 2002 (2006)
Gutierrez, K., Badran, H. M., Bradbury, S. M., Buckley, J. H., Celik, O., Chow, Y. C., ...
In April-May 2003, the blazar 1ES 1959+650 showed an increased level of X-ray activity. This prompted a multiwavelength observation campaign with the Whipple 10 m gamma-ray telescope, the Rossi X-ray...
TeV Gamma-Ray Observations of the Perseus and Abell 2029 Galaxy Clusters (2006)
Perkins, J. S., Badran, H. M., Blaylock, G., Bradbury, S. M., Cogan, P., Chow, Y. C. K., ...
Galaxy clusters might be sources of TeV gamma rays emitted by high-energy protons and electrons accelerated by large scale structure formation shocks, galactic winds, or active galactic nuclei....
Multiwavelength observations of the blazar Markarian 421 in 2002 December and 2003 January (2006)
Rebillot, P. F., Badran, H. M., Blaylock, G., Bradbury, S. M., Buckley, J. H., Carter-Lewis, D. A., ...
We report on a multiwavelength campaign on the TeV gamma-ray blazar Mrk 421 performed during 2002 December and 2003 January. These target of opportunity observations were initiated by the detection...
TeV gamma-ray observations of the Perseus and Abell 2029 galaxy clusters (2006)
Perkins, J. S., Badran, H. M., Blaylock, G., Bradbury, S. M., Cogan, P., Chow, Y. C. K., ...
Galaxy clusters might be sources of TeV gamma rays emitted by high-energy protons and electrons accelerated by large-scale structure formation shocks, galactic winds, or active galactic nuclei....
Multiwavelength observations of 1ES 1959+650, 1 year after the strong outburst of 2002 (2006)
Gutierrez, K., Badran, H. M., Bradbury, S. M., Buckley, J. H., Celik, O., Chow, Y. C., ...
In 2003 April-May, the blazar 1ES 1959+650 showed an increased level of X-ray activity. This prompted a multiwavelength observation campaign with the Whipple 10 m gamma-ray telescope, the Rossi X-Ray...
Multiwavelength observations of 1ES 1959+650, 1 year after the strong outburst of 2002 (2006)
Gutierrez, K., Badran, H. M., Bradbury, S. M., Buckley, J. H., Celik, O., Chow, Y. C., ...
In 2003 April-May, the blazar 1ES 1959+650 showed an increased level of X-ray activity. This prompted a multiwavelength observation campaign with the Whipple 10 m gamma-ray telescope, the Rossi X-Ray...
TeV gamma-ray observations of the Perseus and Abell 2029 galaxy clusters (2006)
Perkins, J. S., Badran, H. M., Blaylock, G., Bradbury, S. M., Cogan, P., Chow, Y. C. K., ...
Galaxy clusters might be sources of TeV gamma rays emitted by high-energy protons and electrons accelerated by large-scale structure formation shocks, galactic winds, or active galactic nuclei....
Multiwavelength observations of the blazar Markarian 421 in 2002 December and 2003 January (2006)
Rebillot, P. F., Badran, H. M., Blaylock, G., Bradbury, S. M., Buckley, J. H., Carter-Lewis, D. A., ...
We report on a multiwavelength campaign on the TeV gamma-ray blazar Mrk 421 performed during 2002 December and 2003 January. These target of opportunity observations were initiated by the detection...
The first VERITAS telescope (2006)
Holder, J., Atkins, R. W., Badran, H. M., Blaylock, G., Bradbury, S. M., Buckley, J. H., ...
The first atmospheric Cherenkov telescope of VERITAS (the Very Energetic Radiation Imaging Telescope Array System) has been in operation since February 2005. We present here a technical description...
Multiwavelength observations of the blazar Markarian 421 in 2002 December and 2003 January (2006)
Rebillot, P. F., Badran, H. M., Blaylock, G., Bradbury, S. M., Buckley, J. H., Carter-Lewis, D. A., ...
We report on a multiwavelength campaign on the TeV gamma-ray blazar Mrk 421 performed during 2002 December and 2003 January. These target of opportunity observations were initiated by the detection...
TeV gamma-ray observations of the Perseus and Abell 2029 galaxy clusters (2006)
Perkins, J. S., Badran, H. M., Blaylock, G., Bradbury, S. M., Cogan, P., Chow, Y. C. K., ...
Galaxy clusters might be sources of TeV gamma rays emitted by high-energy protons and electrons accelerated by large-scale structure formation shocks, galactic winds, or active galactic nuclei....
Multiwavelength Observations of 1ES 1959+650, One Year After the Strong Outburst of 2002 (2006)
Gutierrez, K., Badran, H. M., Bradbury, S. M., Buckley, J. H., Celik, O., Chow, Y. C., ...
In April-May 2003, the blazar 1ES 1959+650 showed an increased level of X-ray activity. This prompted a multiwavelength observation campaign with the Whipple 10 m gamma-ray telescope, the Rossi X-ray...
Multiwavelength Observations of 1ES 1959+650, One Year After the Strong Outburst of 2002 (2006)
Gutierrez, K., Badran, H. M., Bradbury, S. M., Buckley, J. H., Celik, O., Chow, Y. C., ...
In April-May 2003, the blazar 1ES 1959+650 showed an increased level of X-ray activity. This prompted a multiwavelength observation campaign with the Whipple 10 m gamma-ray telescope, the Rossi X-ray...
First results of the Instrumentation Line for the deep-sea ANTARES neutrino telescope (2006)
Aguilar, J.A., Albert, A., Ameli, F., Anghinolfi, M., Anton, G., Anvar, S., ...
In 2005, the ANTARES Collaboration deployed and operated at a depth of 2500 m a so-called Mini Instrumentation Line equipped with Optical Modules (MILOM) at the ANTARES site. The various data...
Blazejowski, M. B., Blaylock, G., Bond, I. H., Bradbury, S. M., Buckley, J. H., Carter-Lewis, D. A., ...
We report results from an intensive multiwavelength monitoring campaign on the TeV blazar Mrk 421 over the period of 2003 - 2004. The source was observed simultaneously at TeV energies with the...
Daniel, M. K., Badran, H. M., Bond, I. H., Boyle, P. J., Bradbury, S. M., Buckley, J. H., ...
The blazar 1ES 1959+650 was observed in a flaring state with the Whipple 10 m Imaging Atmospheric Cerenkov Telescope in 2002 May. A spectral analysis has been carried out on the data from that time...
A survey of unidentified egret sources at very high energies (2005)
Fegan, S. J., Badran, H. M., Bond, I. H., Boyle, P. J., Bradbury, S. M., Buckley, J. H., ...
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....
Blazejowski, M. B., Blaylock, G., Bond, I. H., Bradbury, S. M., Buckley, J. H., Carter-Lewis, D. A., ...
We report results from an intensive multiwavelength monitoring campaign on the TeV blazar Mrk 421 over the period of 2003 - 2004. The source was observed simultaneously at TeV energies with the...
Daniel, M. K., Badran, H. M., Bond, I. H., Boyle, P. J., Bradbury, S. M., Buckley, J. H., ...
The blazar 1ES 1959+650 was observed in a flaring state with the Whipple 10 m Imaging Atmospheric Cerenkov Telescope in 2002 May. A spectral analysis has been carried out on the data from that time...
A survey of unidentified egret sources at very high energies (2005)
Fegan, S. J., Badran, H. M., Bond, I. H., Boyle, P. J., Bradbury, S. M., Buckley, J. H., ...
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....
Transmission of light in deep sea water at the site of the ANTARES neutrino telescope (2005)
Mazure, A., Boulesteix, J., Aguilar, J.A., Albert, A., Anghinolfi, M., Anton, G., ...
The ANTARES neutrino telescope is a large photomultiplier array designed to detect neutrino-induced upward-going muons by their Cherenkov radiation. Understanding the absorption and scattering of...
Study of Large Hemispherical Photomultiplier Tubes for the ANTARES Neutrino Telescope (2005)
Aguilar, J.A., Albert, A., Ameli, F., Amram, P., Anghinolfi, M., Anton, G., ...
The ANTARES neutrino telescope, to be immersed depth in the Mediterranean Sea, will consist of a 3 dimensional matrix of 900 large area photomultiplier tubes housed in pressure resistant glass...
Transmission of light in deep sea water at the site of the ANTARES neutrino telescope (2005)
Aguilar, J.A., Albert, A., Amram, P., Anghinolfi, M., Anton, G., Anvar, S., ...
The ANTARES neutrino telescope is a large photomultiplier array designed to detect neutrino-induced upward-going muons by their Cherenkov radiation. Understanding the absorption and scattering of...
Study of Large Hemispherical Photomultiplier Tubes for the ANTARES Neutrino Telescope (2005)
Aguilar, J.A., Albert, A., Ameli, F., Amram, P., Anghinolfi, M., Anton, G., ...
The ANTARES neutrino telescope, to be immersed depth in the Mediterranean Sea, will consist of a 3 dimensional matrix of 900 large area photomultiplier tubes housed in pressure resistant glass...
Transmission of light in deep sea water at the site of the ANTARES neutrino telescope (2005)
Aguilar, J.A., Albert, A., Amram, P., Anghinolfi, M., Anton, G., Anvar, S., ...
The ANTARES neutrino telescope is a large photomultiplier array designed to detect neutrino-induced upward-going muons by their Cherenkov radiation. Understanding the absorption and scattering of...
Falcone, A. D., Bond, I. H., Boyle, P. J., Bradbury, S. M., Buckley, J. H., Carter-Lewis, D., ...
Blazars have traditionally been separated into two broad categories based on their optical emission characteristics. Blazars with faint or no emission lines are referred to as BL Lacertae objects (...
Constraints on the very high energy emission from BL Lacertae objects (2004)
Horan, D., Badran, H. M., Bond, I. H., Boyle, P. J., Bradbury, S. M., Buckley, J. H., ...
We present results from observations of 29 BL Lacertae objects, taken with the Whipple Observatory 10 m gamma-ray telescope between 1995 and 2000. The observed objects are mostly at low redshift (z
Tev Gamma-ray observations of the galactic center (2004)
Kosack, K., Badran, H. M., Bond, I. H., Boyle, P. J., Bradbury, S. M., Buckley, J. H., ...
We report a possible detection of TeV gamma rays from the Galactic center by the Whipple 10 m gamma-ray telescope. Twenty-six hours of data were taken over an extended period from 1995 through 2003...
Observation of M87 at 400 GeV with the Whipple 10 meter telescope (2004)
Le Bohec, S., Badran, H. M., Bond, I. H., Boyle, P. J., Bradbury, S. M., Buckley, J. H., ...
We present results from observations taken with the Whipple 10 m very high energy gamma-ray telescope with maximal sensitivity at 400 GeV during 39 hr between 2000 and 2003 in the direction of the...
VERITAS: the Very Energetic Radiation Imaging Telescope Array System (2004)
Krennrich, F., Bond, I. H., Boyle, P. J., Bradbury, S. M., Buckley, J. H., Carter-Lewis, D., ...
The Very Energetic Radiation Imaging Telescope Array System (VERITAS) is the major next generation imaging atmospheric Cherenkov gamma-ray telescope in the western hemisphere and will be located in...
The ANTARES neutrino project (2004)
Sokalski, I., Aguilar, J.A., Alleyne, H., Ameli, F., Amram, P., Anghinolfi, M., ...
The ANTARES neutrino project (2004)
Sokalski, I., Aguilar, J.A., Alleyne, H., Ameli, F., Amram, P., Anghinolfi, M., ...
Hourly Spectral Variability of Mrk 421 (2003)
Krennrich, F., Bond, I. H., Boyle, P. J., Bradbury, S. M., Buckley, J. H.
Mrk 421 is the first TeV blazar found to exhibit significant spectral variability during strong flaring activity, showing hardening of the TeV spectrum in high emission states. Mrk 421 is also known...
Search for TeV emissions from pulsars in binary systems (2003)
Hall, T. A., Bond, I. H., Bradbury, S. M., Buckley, J. H., Carson, M. J., Carter-Lewis, D. A., ...
A survey of binary systems containing pulsars was conducted, with the intention of detecting Galactic sources of very high energy gamma-ray emission. Observations were carried out with the Whipple 10...
Holder, J., Bond, I. H., Boyle, P. J., Bradbury, S. M., Buckley, J. H., Carter-Lewis, D. A., ...
We present the first strong detection of very high energy gamma-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...
Search for high-energy gamma rays from an X-ray-selected blazar sample (2003)
Perez, I. D., Bond, I. H., Boyle, P. J., Bradbury, S. M., Buckley, J. H., Carter-Lewis, D. A., ...
Our understanding of blazars has been greatly increased in recent years by extensive multiwavelength observations, particularly in the radio, X-ray, and gamma-ray regions. Over the past decade the...
Recent Results from the VERITAS Collaboration (2002)
Krennrich, F., Bond, I. H., Bradbury, S. M., Buckley, J. H., Carter-Lewis, D. A., Cui, W., ...
A decade after the discovery of TeV gamma-rays from the blazar Mrk 421 (Punch et al. 1992), the list of TeV blazars has increased to five BL Lac objects: Mrk 421 (Punch et al. 1992; Petry et al....
The TeV spectrum of H1426+428 (2002)
Petry, D., Bond, I. H., Bradbury, S. M., Buckley, J. H., Carter-Lewis, D. A., Cui, W., ...
The BL Lac object H1426+428 was recently detected as a high energy gamma-ray source by the VERITAS collaboration (Horan et al. 2002). We have reanalyzed the 2001 portion of the data used in the...
Discovery of Spectral Variability of Markarian 421 at TeV Energies (2002)
Krennrich, F., Bond, I. H., Bradbury, S. M., Buckley, J. H., Carter-Lewis, D. A., Cui, W., ...
The detection of spectral variability of the gamma-ray blazar Mrk 421 at TeV energies is reported. Observations with the Whipple Observatory 10m gamma-ray telescope taken in 2000/2001 revealed...
Cutoff in the TeV Energy Spectrum of Markarian 421 During Strong Flares in 2001 (2001)
Krennrich, F., Badran, H. M., Bond, I. H., Bradbury, S. M., Buckley, J. H., Carter-Lewis, D. A., ...
Exceptionally strong and long lasting flaring activity of the blazar Markarian 421 (Mrk 421) occurred between January and March 2001. Based on the excellent signal-to-noise ratio of the data we...
Imaging Atmospheric Cerenkov Telescopes: Techniques and Results (2001)
The hunt for cosmic TeV particle accelerators is prospering through Imaging Atmospheric Cerenkov Telescopes. We face challenges such as low light levels and MHz trigger rates, and the need to...
Gamma-ray Observations of the Galactic Plane at Energies E > 500 GeV (2000)
LeBohec, S., Bond, I. H., Bradbury, S. M., Buckley, J. H., Burdett, A. M., Carter-Lewis, D. A., ...
In 1998 and 1999 the Whipple Observatory 10 m telescope was used to search for diffuse gamma ray emission from the Galactic Plane. No signifiant evidence of emission was found. Assuming the TeV...
Search for Pulsed TeV Gamma-ray Emission from the Crab Pulsar (1999)
Lessard, R. W., Bond, I. H., Bradbury, S. M., Buckley, J. H., Burdett, A. M., Carter-Lewis, D. A., ...
We present the results of a search for pulsed TeV emission from the Crab pulsar using the Whipple Observatory's 10 m gamma-ray telescope. The direction of the Crab pulsar was observed for a total of...
Whipple Observations of BL Lac Objects (1999)
D'Vali, M., Bond, I. H., Bradbury, S. M., Buckley, J. H., Burdett, A. M., Carter-Lewis, D. A., ...
Only BL Lac objects have been detected as extragalactic sources of very high energy (E > 300 GeV) gamma rays. Using the Whipple Observatory Gamma-ray Telescope, we have attempted to detect more BL...
The Very Energetic Radiation Imaging Telescope Array System (VERITAS) (1999)
Bradbury, S. M., Bond, I. H., Breslin, A. C., Buckley, J. H., Carter-Lewis, D. A., Catanese, M., ...
We give an overview of the current status and scientific goals of VERITAS, a proposed hexagonal array of seven 10 m aperture imaging Cherenkov telescopes. The selected site is Montosa Canyon (1390 m...
A Search for Pulsed TeV Gamma Ray Emission from the Crab Pulsar (1999)
Burdett, A. M., Bond, I. H., Boyle, P. J., Bradbury, S. M., Buckley, J. H., Carter-Lewis, D. A., ...
We present the results of a search for pulsed TeV emission from the Crab pulsar using the Whipple Observatory's 10m gamma-ray telescope. The direction of the Crab pulsar was observed for a total of...
Hour-Scale Multiwavelength Variability in Markarian 421 (1999)
Catanese, M., Bond, I. H., Bradbury, S. M., Breslin, A. C., Buckley, J. H., Burdett, A. M., ...
Markarian 421 was observed for about four days with BeppoSAX and the Whipple Observatory gamma-ray telescope in April 1998. A pronounced, well-defined, flare with hour-scale variability was observed...
VHE gamma-ray observations of Markarian 501 (1999)
Bond, I. H., Bradbury, S. M., Buckley, J. H., Burdett, A. M., Carson, M. J., ...
Markarian 501, a nearby (z=0.033) X-ray selected BL Lacertae object, is a well established source of Very High Energy (VHE, E>=300 GeV) gamma rays. Dramatic variability in its gamma-ray emission on...
Search for TeV Gamma-Rays from Shell-Type Supernova Remnants (1999)
Bond, I. H., Boyle, P. J., Bradbury, S. M., Buckley, J. H., Burdett, A. M., ...
If cosmic rays with energies 500 GeV flux are reported. Non-thermal X-ray emission detected from one of these remnants (Cassiopeia A) has been interpreted as synchrotron emission from electrons in...
The Flux Variability of Markarian 501 in Very High Energy Gamma Rays (1999)
Quinn, J., Bond, I. H., Boyle, P. J., Bradbury, S. M., Breslin, A. C., Buckley, J. H., ...
The BL Lacertae object Markarian 501 was identified as a source of gamma-ray emission at the Whipple Observatory in March 1995. Here we present a flux variability analysis on several times-scales of...
Tev Blazars: Status of Observations (1998)
Krennrich, F., Biller, S. D., Bond, I. H., Boyle, P. J., Bradbury, S. M., Breslin, A. C., ...
The close relation between ground-based TeV observations and satellite borne $\gamma$-ray measurements has been important for the understanding of blazars. The observations which involve the TeV...
Discovery of >350 GeV Gamma Rays from the BL Lacertae Object 1ES 2344+514 (1997)
Catanese, M., Akerlof, C. W., Badran, H. M., Biller, S. D., Bond, I. H., Boyle, P. J., ...
We present the discovery of >350 GeV gamma-ray emission from the BL Lacertae object 1ES 2344+514 with the Whipple Observatory 10m gamma-ray telescope. This is the third BL Lac object detected at...
Petry, D., Bradbury, S. M., Konopelko, A., Kranich, D., Raubenheimer, B. C., Collaboration, The HEGRA
The HEGRA 5 m^2 air Cherenkov telescope (CT1) was used to search for gamma-ray emission above 1.5 TeV from a series of low redshift AGN (Mkn 421, Mkn 501, MS 0116+319, PKS 2209+236, NGC 315 and W...
Multiwavelength Observations of a Flare from Markarian 501 (1997)
Catanese, M., Bradbury, S. M., Breslin, A. C., Buckley, J. H., Carter-Lewis, D. A., Cawley, M. F., ...
We present multiwavelength observations of the BL Lacertae object Markarian 501 (Mrk 501) in 1997 between April 8 and April 19. Evidence of correlated variability is seen in very high energy (VHE, E...
A Search for TeV Emission from Unidentified Sources in the Galactic Plane (1997)
Buckley, J. H., Boyle, P. J., Bradbury, S. M., Burdett, A. M., Gordo, J. Bussons, Carter-Lewis, D. A., ...
The ~70 unidentified sources of the EGRET sky survey may be one of its most important legacies. The identification of these sources at other wavelengths is critical to understanding their nature....
TeV Observations of the Variability and Spectrum of Markarian 501 (1997)
Quinn, J., Bond, I. H., Boyle, P. J., Buckley, J. H., Bradbury, S. M., Breslin, A. C., ...
Markarian 501 is only the second extragalactic source to be detected with high statistical certainty at TeV energies; it is similar in many ways to Markarian 421. The Whipple Observatory gamma-ray...
Constraints on Cosmic-Ray Origin Theories from TeV Gamma-Ray Observations (1997)
Lessard, R. W., Boyle, P. J., Bradbury, S. M., Buckley, J. H., Burdett, A. C., Gordo, J. Bussons, ...
If supernova remnants (SNRs) are the sites of cosmic-ray acceleration, the associated nuclear interactions should result in observable fluxes of TeV gamma-rays from the nearest SNRs. Measurements of...
Tev Observations of the Variability and Spectrum of Markarian 421 (1997)
McEnery, J. E., Bond, I. H., Boyle, P. J., Bradbury, S. M., Breslin, A. C., Buckley, J. H., ...
Markarian 421 was the first extragalactic source to be detected with high statistical certainty at TeV energies. The Whipple Observatory gamma-ray telescope has been used to observe the Active...
Detection of Gamma-Rays above 1.5 TeV from Mkn 501 (1996)
Bradbury, S. M., Deckers, T., Petry, D., Konopelko, A.
A detection of TeV $\gamma$-rays from Mkn 501 is reported, based on observations made between March and August 1996 with the first HEGRA Cherenkov telescope (CT1). From the image analysis, 351 excess...
Detection of VHE Gamma-rays from Mkn 421 with the HEGRA Cherenkov Telescopes (1996)
Petry, D., Bradbury, S. M., Konopelko, A., Fernandez, J.
A detection of Gamma-rays from Mkn 421 at energies above 1 TeV is reported, based on observations made in December 1994 - May 1995 with the first two HEGRA Cherenkov telescopes. >From the image...
Collection of urine specimens in general practice: to clean or not to clean?
The usefulness of preparatory vulval cleansing before urine specimen collection was evaluated in women aged 16 to 75 years attending a general practice. A total of 316 specimens were examined, 158...