Publications (19)
Very high energy gamma-rays from Centaurus X-3: indications and implications
A. M. Atoyan, P. M. Chadwick, M. K. Daniel +7
A timing analysis of VHE gamma-ray observations of Cen X-3 taken with the University of Durham Mark 6 telescope was performed, using both Rayleigh and Bayesian statistics. Data fro…
A Search for VHE Gamma Rays from AGNs Visible from the Southern Hemisphere
P. M. Chadwick, K. Lyons, T. J. L. McComb +5
Observations have been made, using the University of Durham Mark 6 gamma ray telescope, of the very high energy gamma ray emission from a number of active galactic nuclei visible f…
VHE Gamma Rays from PKS 2155-304
P. M. Chadwick, K. Lyons, T. J. L. McComb +6
The close X-ray selected BL Lac PKS 2155-304 has been observed using the University of Durham Mark 6 very high energy (VHE) gamma ray telescope during 1996 September/October/Novemb…
The energy spectra of TeV sources measured with the Durham Mark 6 Telescope
P. M. Chadwick, K. Lyons, T. J. L. McComb +5
A programme of detailed simulations of the response of the Durham Mark 6 atmospheric Cherenkov telescope is in progress. The effective collecting area for triggering by gamma-ray s…
The ZEPLIN-III Anti-Coincidence Veto Detector
D. Yu. Akimov, H. M. Araujo, E. J. Barnes +34
The design, optimisation and construction of an anti-coincidence veto detector to complement the ZEPLIN-III direct dark matter search instrument is described. One tonne of plastic…
VHE Gamma Rays from PKS 2155-304
P. M. Chadwick, K. Lyons, T. J. L. McComb +5
The X-ray selected BL Lac PKS 2155-304 has been observed using the University of Durham Mark 6 very high energy gamma ray telescope during 1998. We find no evidence for TeV emissio…
Calibration of Photomultiplier Arrays
F. Neves, V. Chepel, D. Yu. Akimov +31
A method is described that allows calibration and assessment of the linearity of response of an array of photomultiplier tubes. The method does not require knowledge of the photomu…
Correlation between the TeV gamma ray and X-ray emission from an accreting X-ray binary
P. M. Chadwick, K. Lyons, T. J. L. McComb +6
This paper has been withdrawn by the authors.
PKS 2155-304 - a source of VHE gamma-rays
P. M. Chadwick, K. Lyons, T. J. L. McComb +7
The close X-ray selected BL Lac PKS 2155--304 has been observed using the University of Durham Mark 6 very high energy (VHE) gamma ray telescope during 1996 September/October/Novem…
Performance of the veto detector incorporated into the ZEPLIN-III experiment
C. Ghag, D. Yu. Akimov, H. M. Araújo +36
The ZEPLIN-III experiment is operating in its second phase at the Boulby Underground Laboratory in search of dark matter WIMPs. The major upgrades to the instrument over its first…
TeV Measurements of Young Pulsars and Supernova Remnants
P. M. Chadwick, K. Lyons, T. J. L. McComb +6
Observations have been made with the University of Durham Mark 6 telescope of a number of supernova remnants and young pulsars (Vela pulsar, PSR B1055-52, PSR J1105-6107, PSR J0537…
Measurements of Flux Limits for TeV Emission from AGNs
P. M. Chadwick, K. Lyons, T. J. L. McComb +6
The University of Durham Mark 6 Telescope has been used to make observations of a number of AGNs visible from the Southern Hemisphere. Results are presented for limits to VHE gamma…
Geomagnetic Effects on the Performance of Atmospheric Cerenkov Telescopes
P. M. Chadwick, K. Lyons, T. J. L. McComb +5
Atmospheric Cerenkov telescopes are used to detect electromagnetic showers from primary gamma rays of energy > 300 GeV and to discriminate these from cascades due to hadrons using…
TeV Gamma Ray Emission from Cen X-3
P. M. Chadwick, K. Lyons, T. J. L. McComb +5
Cen X-3 is a well-studied high-mass accreting X-ray binary and a variable source of high energy gamma rays from 100 MeV to 1 TeV. The object has been extensively monitored with the…
Limits on inelastic dark matter from ZEPLIN-III
D. Yu. Akimov, H. M. Araujo, E. J. Barnes +43
We present limits on the WIMP-nucleon cross section for inelastic dark matter derived from the 2008 run of ZEPLIN-III. Cuts, notably on scintillation pulse shape and scintillation-…
Correlation between the X-ray and TeV Gamma Ray Emission from an Accreting X-ray Binary
P. M. Chadwick, K. Lyons, T. J. L. McComb +6
This paper has been withdrawn by the authors.
Acoustic and optical variations during rapid downward motion episodes in the deep north-western Mediterranean Sea
H. van Haren, I. Taupier-Letage, J. A. Aguilar +138
An Acoustic Doppler Current Profiler (ADCP) was moored at the deep-sea site of the ANTARES neutrino telescope near Toulon, France, thus providing a unique opportunity to compare hi…
Limits on the spin-dependent WIMP-nucleon cross-sections from the first science run of the ZEPLIN-III experiment
V. N. Lebedenko, H. M. Araujo, E. J. Barnes +36
We present new experimental constraints on the WIMP-nucleon spin-dependent elastic cross-sections using data from the first science run of ZEPLIN-III, a two-phase xenon experiment…
Geomagnetic effects on atmospheric Cerenkov images
P. M. Chadwick, K. Lyons, T. J. L. McComb +6
Atmospheric Cerenkov telescopes are used to detect electromagnetic showers from primary gamma rays of energy ~300 GeV - ~10 TeV and to discriminate these from cascades due to hadro…