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Search for Pulsed TeV Gamma-ray Emission from the Crab Pulsar

ARAN - Access to Research at NUI Galway

Show simple item record 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. 2012-01-20T10:31:21Z 2012-01-20T10:31:21Z 1999
dc.description.abstract 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 November and 1997 March. During this period the Whipple 10 m telescope was operated at its lowest energy threshold to date. Spectral analysis techniques were applied to search for the presence of a gamma-ray signal from the Crab pulsar over the energy band 250 GeV to 4 TeV. We do not see any evidence of the 33 ms pulsations present in other energy bands from the Crab pulsar. The 99.9% confidence level upper limit for pulsed emission above 250 GeV is derived to be 4.8x10^-12 cm^-2 s^-1 or <3% of the steady flux from the Crab Nebula. These results imply a sharp cut-off of the power-law spectrum seen by the EGRET instrument on the Compton Gamma-Ray Observatory. If the cut-off is exponential, it must begin at 60 GeV or lower to accommodate these upper limits. en_US
dc.format application/pdf en_US
dc.language.iso en en_US
dc.subject Astrophysics en_US
dc.subject Physics en_US
dc.title Search for Pulsed TeV Gamma-ray Emission from the Crab Pulsar en_US
dc.type Article en_US
dc.local.publishedsource en_US
dc.description.peer-reviewed peer-reviewed en_US
dc.local.authors R.W. Lessard, I.H. Bond, S.M. Bradbury, J.H. Buckley, A.M. Burdett, D.A. Carter-Lewis, M. Catanese, M.F. Cawley, M. D'Vali, D.J. Fegan, J.P. Finley, J.A. Gaidos, G.H. Gillanders, T. Hall, A.M. Hillas, F. Krennrich, M.J. Lang, C. Masterson, P. Moriarty, J. Quinn, H.J. Rose, F.W. Samuelson, G.H. Sembroski, R. Srinivasan, V.V. Vassiliev and T.C. Weekes
dc.local.arxivid astro-ph/9912520

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