TEV gamma ray emission from the active galactic nucleus Markarian 421
dc.contributor.author | Schubnell, M. S. (Michael S.) | en_US |
dc.contributor.author | Akerlof, Carl W. | en_US |
dc.contributor.author | Cawley, M. F. | en_US |
dc.contributor.author | Chantell, M. | en_US |
dc.contributor.author | Connaughton, V. | en_US |
dc.contributor.author | Fegan, D. J. | en_US |
dc.contributor.author | Fennell, S. | en_US |
dc.contributor.author | Gaidos, J. A. | en_US |
dc.contributor.author | Hillas, A. M. | en_US |
dc.contributor.author | Kerrick, A. D. | en_US |
dc.contributor.author | Kwok, P. | en_US |
dc.contributor.author | Lamb, R. C. | en_US |
dc.contributor.author | Lewis, D. A. | en_US |
dc.contributor.author | Meyer, D. I. | en_US |
dc.contributor.author | Mohanty, G. | en_US |
dc.contributor.author | Rose, J. | en_US |
dc.contributor.author | Rovero, A. C. | en_US |
dc.contributor.author | Sembroski, G. H. | en_US |
dc.contributor.author | Weekes, T. C. | en_US |
dc.contributor.author | West, M. | en_US |
dc.contributor.author | Whitaker, T. | en_US |
dc.contributor.author | Wilson, C. L. | en_US |
dc.date.accessioned | 2011-11-15T16:05:39Z | |
dc.date.available | 2011-11-15T16:05:39Z | |
dc.date.issued | 1994-06-20 | en_US |
dc.identifier.citation | Schubnell, M.; Akerlof, C. W.; Cawley, M. F.; Chantell, M.; Connaughton, V.; Fegan, D. J.; Fennell, S.; Gaidos, J. A.; Hillas, A. M.; Kerrick, A. D.; Kwok, P.; Lamb, R. C.; Lewis, D. A.; Meyer, D. I.; Mohanty, G.; Rose, J.; Rovero, A. C.; Sembroski, G.; Weekes, T. C.; West, M.; Whitaker, T.; Wilson, C. (1994). "TEV gamma ray emission from the active galactic nucleus Markarian 421." AIP Conference Proceedings 304(1): 597-601. <http://hdl.handle.net/2027.42/87648> | en_US |
dc.identifier.other | APCPCS-304-1 | en_US |
dc.identifier.uri | https://hdl.handle.net/2027.42/87648 | |
dc.description.abstract | TeV energy gamma ray emission from the blazar Markarian 421 was detected with the Whipple 10 meter imaging Cherenkov telescope initially during the observation period March‐June 1992 at an average photon flux of 1.5×10−11 cm2 s−1. The photon spectrum in the TeV range lies on the extrapolation of the data points observed by EGRET during viewing phase I and indicates that the emission follows an unchanged power law between 100 MeV and 10 TeV with no significant intergalactic absorption. More recent observations from the spring of 1993 confirm the 1992 measurements. Here we give an update on the status of the observations, the analysis for time variability, and the results from the analysis to determine the spectral index for Markarian 421 at TeV energies.The search for TeV emission from other extragalactic sources detected by the EGRET instrument on the Compton Gamma Ray Observatory at GeV energies have so far been negative. | en_US |
dc.publisher | The American Institute of Physics | en_US |
dc.rights | © The American Institute of Physics | en_US |
dc.title | TEV gamma ray emission from the active galactic nucleus Markarian 421 | en_US |
dc.type | Article | en_US |
dc.subject.hlbsecondlevel | Physics | en_US |
dc.subject.hlbtoplevel | Science | en_US |
dc.description.peerreviewed | Peer Reviewed | en_US |
dc.contributor.affiliationum | University of Michigan, Ann Arbor, Michigan 48109 USA | en_US |
dc.contributor.affiliationum | University of Michigan, Ann Arbor, Michigan 48109 USA | en_US |
dc.contributor.affiliationother | St. Patrick’s College, Maynooth, Co. Kildare, Ireland | en_US |
dc.contributor.affiliationother | Whipple Observatory, Harvard‐Smithsonian CfA, Amado, Arizona 85645 USA | en_US |
dc.contributor.affiliationother | University College Dublin, Belfield, Dublin 4, Ireland | en_US |
dc.contributor.affiliationother | Whipple Observatory, Harvard‐Smithsonian CfA, Amado, Arizona 86545 USA | en_US |
dc.contributor.affiliationother | Purdue University, West Lafayette, Indiana 47907 USA | en_US |
dc.contributor.affiliationother | University of Leeds, Leeds LS2 9JT, United Kingdom | en_US |
dc.contributor.affiliationother | Iowa State University, Ames, Iowa 50011 USA | en_US |
dc.contributor.affiliationother | Iowa State University, Ames, Iowa 50011 USA | en_US |
dc.contributor.affiliationother | University of Leeds, Leeds LS2 9JT, UK | en_US |
dc.contributor.affiliationother | Whipple Observatory, Harvard‐Smithsonian CfA, Amado, Arizona 85645 USA | en_US |
dc.contributor.affiliationother | Purdue University, West Lafayette, Indiana 47907 USA | en_US |
dc.contributor.affiliationother | Whipple Observatory, Harvard‐Smithsonian CfA, Amado, Arizona 85645 USA | en_US |
dc.contributor.affiliationother | Purdue University, West Lafayette, Indiana 47907 USA | en_US |
dc.description.bitstreamurl | http://deepblue.lib.umich.edu/bitstream/2027.42/87648/2/597_1.pdf | |
dc.identifier.doi | 10.1063/1.45676 | en_US |
dc.identifier.source | The second Compton symposium | en_US |
dc.owningcollname | Physics, Department of |
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