Now showing items 95-114 of 140

    • A Search for Pulsed TeV Gamma Ray Emission from the Crab Pulsar 

      Lang, Mark; Gillanders, Gary; Burdett, A. M.; Bond, I. H.; Boyle, P. J.; Bradbury, S. M.; Buckley, J. H.; Carter-Lewis, D. A.; Catanese, M.; Cawley, M. F.; D'Vali, M.; Fegan, D. J.; Fegan, S. J.; Finley, J. P.; Gaidos, J. A.; Gillanders, G. H.; Hall, T. A.; Hillas, A. M.; Kildea, J.; Knapp, J.; Krennrich, F.; Lang, M. J.; LeBohec, S.; Lessard, R. W.; Masterson, C.; Moriarty, P.; Quinn, J.; Rose, H. J.; Samuelson, F. W.; Sembroski, G. H.; Srinivasan, R.; Vassiliev, V. V.; Weekes, T. C. (1999)
      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 73.4 hours between 1994 ...
    • A Search for Pulsed TeV Gamma Ray Emission from the Crab Pulsar 

      Lang, Mark; Gillanders, Gary (1999)
      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 73.4 hours between 1994 ...
    • Search for Pulsed TeV Gamma-ray Emission from the Crab Pulsar 

      Lang, Mark; Gillanders, Gary; Lessard, R. W.; Bond, I. H.; Bradbury, S. M.; Buckley, J. H.; Burdett, A. M.; Carter-Lewis, D. A.; Catanese, M.; Cawley, M. F.; D'Vali, M.; Fegan, D. J.; Finley, J. P.; Gaidos, J. A.; Gillanders, G. H.; Hall, T.; Hillas, A. M.; Krennrich, F.; Lang, M. J.; Masterson, C.; Moriarty, P.; Quinn, J.; Rose, H. J.; Samuelson, F. W.; Sembroski, G. H.; Srinivasan, R.; Vassiliev, V. V.; Weekes, T. C. (1999)
      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 73.4 hours between 1994 ...
    • Search for Pulsed TeV Gamma-ray Emission from the Crab Pulsar 

      Lang, Mark; Gillanders, Gary (1999)
      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 73.4 hours between 1994 ...
    • Simultaneous Multiwavelength Observations of Markarian 421 During Outburst 

      Lang, Mark (2009)
      We report on the results of two coordinated multiwavelength campaigns that focused on the blazar Markarian 421 during its 2006 and 2008 outbursts. These campaigns obtained UV and X-ray data using the XMM-Newton satellite, ...
    • Sophisticated clean air strategies required to mitigate against particulate organic pollution 

      Grigas, Tomas; Ovadnevaite, Jurgita; Ceburnis, Darius; Moran, E.; McGovern, F.M.; Jennings, Stephen G.; O'Dowd, Colin (Nature Publishing Group, 2017-03-17)
      Since the 1980's, measures mitigating the impact of transboundary air pollution have been implemented successfully as evidenced in the 1980-2014 record of atmospheric sulphur pollution over the NE-Atlantic, a key region ...
    • Spatial frequency domain correlation mapping optical coherence tomography for nanoscale structural characterization 

      Alexandrov, Sergey; McNamara, Paul M.; Das, Nandan; Zhou, Yi; Lynch, Gillian; Hogan, Josh; Leahy, Martin (AIP Publishing, 2019-09-16)
      Most of the fundamental pathological processes in living tissues exhibit changes at the nanoscale. Noninvasive, label-free detection of structural changes in biological samples pose a significant challenge to both researchers ...
    • Status of the VERITAS Observatory 

      Lang, Mark; Gillanders, Gary (2008)
      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 telescopes. A number of ...
    • The study of neutron star magnetospheres with LOFT 

      Shearer, Andrew (2015)
      The Large Observatory for X-ray Timing, LOFT, is designed to perform fast X-ray timing and spectroscopy with uniquely large throughput (Feroci et al. 2014). LOFT focuses on two fundamental questions of ESA’s Cosmic Vision ...
    • Summertime primary and secondary contributions to Southern Ocean cloud condensation nuclei 

      Fossum, Kirsten N.; Ovadnevaite, Jurgita; Ceburnis, Darius; Dall'Osto, Manuel; Marullo, Salvatore; Bellacicco, Marco; Simó, Rafel; Liu, Dantong; Flynn, Michael; Zuend, Andreas; O'Dowd, Colin (Nature Research (part of Springer Nature), 2019-07-18)
      Atmospheric aerosols in clean remote oceanic regions contribute significantly to the global albedo through the formation of haze and cloud layers; however, the relative importance of ‘primary’ wind-produced sea-spray over ...
    • Supersonic turbulence in the cold massive core JCMT 18354-0649S 

      Redman, Matt P. (2009)
      An example of a cold massive core, JCMT 18354-0649S, a possible high mass analogue to a low mass star forming core is studied. Line and continuum observations from JCMT, Mopra Telescope and Spitzer are presented and modelled ...
    • TeV and Multi-wavelength Observations of Mrk 421 in 2006-2008 

      Lang, Mark; Gillanders, Gary (2011)
      We report on TeV gamma-ray observations of the blazar Mrk 421 (redshift of 0.031) with the VERITAS observatory and the Whipple 10m Cherenkov telescope. The excellent sensitivity of VERITAS allowed us to sample the TeV ...
    • TeV Gamma-Ray Observations of the Perseus and Abell 2029 Galaxy Clusters 

      Lang, Mark; Gillanders, Gary (2006)
      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. Furthermore, gamma rays may ...
    • Tissue viability imaging of skin microcirculation following exposure to Cold Air (-110°C) and Cold Water (8°C) 

      Leahy, Martin (CIAFEL, 2013)
      Cryotherapy is currently used in various clinical, rehabilitative and sporting settings. However, very little is known regarding the impact of cooling on the microcirculatory response. Objectives: The present study sought ...
    • Top-down and bottom-up aerosol-cloud closure: towards understanding sources of uncertainty in deriving cloud shortwave radiative flux 

      Sanchez, Kevin J.; Roberts, Gregory C.; Calmer, Radiance; Nicoll, Keri; Hashimshoni, Eyal; Rosenfeld, Daniel; Ovadnevaite, Jurgita; Preissler, Jana; Ceburnis, Darius; O'Dowd, Colin; Russell, Lynn M. (European Geosciences Union (EGU), 2017-08-22)
      Top-down and bottom-up aerosol-cloud shortwave radiative flux closures were conducted at the Mace Head Atmospheric Research Station in Galway, Ireland, in August 2015. This study is part of the BACCHUS (Impact of Biogenic ...
    • Tracking potential sources of peak ozone concentrations in the upper troposphere over the Arabian Gulf region. 

      Spohn, Teresa K. (Elsevier (Science Direct), 2014-11-13)
      In August 2013, the Qatar Environment and Energy Research Institute (QEERI), was the first to launch temporally highly resolved ozonesondes in the Middle East region. The data from 20 launches consistently show changes in ...
    • Ultra-sensitive label free imaging below the resolution limit 

      Alexandrov, Sergey; McGrath, James; Sheppard, Colin J. R.; Boccafoschi, Francesca; Giannini, Cinzia; Sibillano, Teresa; Subhash, Hrebesh; Hogan, Josh; Leahy, James J. (SPIE (Society of Photo-optical Instrumentation Engineers) Digital Library, 2019-02-02)
      Almost all known nanoscopy methods rely upon the contrast created by fluorescent labels attached to the object of interest. This causes limitations on their applicability to in vivo imaging. A new label-free spectral ...
    • Understanding the changes of cone reflectance in adaptive optics flood illumination retinal images over three years 

      Mariotti, Letizia; Devaney, Nicholas; Lombardo, Giuseppe; Lombardo, Marco (Optical Society of America, 2016)
      Although there is increasing interest in the investigation of cone reflectance variability, little is understood about its characteristics over long time scales. Cone detection and its automation is now becoming a fundamental ...
    • Unprecedented study of the broadband emission of Mrk 421 during flaring activity in March 2010 

      Moriarty, P.; Gillanders, Gary; Lang, Mark (EDP Sciences, 2015-05-27)
      Context. Because of its proximity, Mrk 421 is one of the best sources on which to study the nature of BL Lac objects. Its proximity allows us to characterize its broadband spectral energy distribution (SED). Aims. The ...