M
M. F. Cawley
Researcher at Maynooth University
Publications - 86
Citations - 5055
M. F. Cawley is an academic researcher from Maynooth University. The author has contributed to research in topics: Crab Nebula & Observatory. The author has an hindex of 28, co-authored 86 publications receiving 4919 citations. Previous affiliations of M. F. Cawley include St Patrick's College, Dublin & St Patrick's College, Maynooth.
Papers
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Journal ArticleDOI
Detection of TeV photons from the active galaxy Markarian 421
M. Punch,M. Punch,C. W. Akerlof,M. F. Cawley,M. Chantell,D. J. Fegan,S. Fennell,S. Fennell,J. A. Gaidos,J. Hagan,A. M. Hillas,Yan-Fei Jiang,A. D. Kerrick,R. C. Lamb,M. A. Lawrence,D. A. Lewis,D. I. Meyer,G. Mohanty,K. S. O'Flaherty,P. T. Reynolds,A. C. Rovero,Michael Schubnell,G. H. Sembroski,T. C. Weekes,T. Whitaker,Christine D. Wilson +25 more
TL;DR: In this article, the detection of TeV energy photons from the giant elliptical galaxy Markarian 421 using the Whipple Observatory gamma-ray telescope was reported and the signal has a statistical significance of 6 sigma above background and the flux above 0.5 TeV is 0.3 of that from the Crab Nebula.
Journal ArticleDOI
Observation of TeV gamma rays from the Crab Nebula using the atmospheric Cerenkov imaging technique
Journal ArticleDOI
Extremely rapid bursts of TeV photons from the active galaxy Markarian 421
J. A. Gaidos,C. W. Akerlof,S. Biller,P. J. Boyle,A. C. Breslin,J. H. Buckley,D. A. Carter-Lewis,M. Catanese,M. F. Cawley,D. J. Fegan,J. P. Finley,J. Bussons Gordo,A. M. Hillas,F. Krennrich,R. C. Lamb,R. W. Lessard,J. E. McEnery,C. Masterson,G. Mohanty,P. Moriarty,John L. Quinn,A. J. Rodgers,H. J. Rose,Frank W. Samuelson,Michael Schubnell,G. H. Sembroski,Raghavan Srinivasan,T. C. Weekes,C. L. Wilson,J. Zweerink +29 more
TL;DR: In this paper, the authors reported two dramatic outbursts of TeV photons from the active galaxy Markarian 421 (Mrk421) in which the flux increased above the relatively quiescent value by more than a factor of 50, briefly making Mrk421 the brightest TeV source in the sky.
Journal ArticleDOI
Detection of Gamma Rays with E > 300 GeV from Markarian 501
John L. Quinn,John L. Quinn,C. W. Akerlof,S. Biller,J. H. Buckley,D. A. Carter-Lewis,M. F. Cawley,M. Catanese,Valerie Connaughton,Valerie Connaughton,D. J. Fegan,J. P. Finley,J. A. Gaidos,A. M. Hillas,R. C. Lamb,F. Krennrich,R. W. Lessard,J. E. McEnery,D. I. Meyer,G. Mohanty,A. J. Rodgers,H. J. Rose,Michael Schubnell,G. H. Sembroski,T. C. Weekes,Christine D. Wilson,J. Zweerink +26 more
TL;DR: The detection of gamma rays of energy greater than 300 GeV from the BL Lacertae object Mrk 501 demonstrates that extragalactic TeV emission is not unique to Mrk 421.
Journal ArticleDOI
Limits to Quantum Gravity Effects on Energy Dependence of the Speed of Light from Observations of TeV Flares in Active Galaxies
S. D. Biller,A. C. Breslin,J. H. Buckley,M. Catanese,M. J. Carson,D. A. Carter-Lewis,M. F. Cawley,D. J. Fegan,J. P. Finley,J. A. Gaidos,A. M. Hillas,F. Krennrich,R. C. Lamb,R. W. Lessard,C. Masterson,J. E. McEnery,B. McKernan,P. Moriarty,John L. Quinn,H. J. Rose,Frank W. Samuelson,G. H. Sembroski,P. Skelton,T. C. Weekes +23 more
TL;DR: In this article, the authors used data from a TeV -ray flare associated with the active galaxy Markarian 421 to place bounds on the possible energy dependence of the speed of light in the context of an effective quantum gravitational energy scale.