TeV Observations of the Variability and Spectrum of Markarian 501

J. Quinn; I. H. Bond; P. J. Boyle; J. H. Buckley; S. M. Bradbury; A. C. Breslin; A. M. Burdett; J. Bussons Gordo; D. A. Carter-Lewis; M. Catanese; M. F. Cawley; D. J. Fegan; J. P. Finley; J. A. Gaidos; A. Hall; A. M. Hillas; F. Krennrich; R. C. Lamb; R. W. Lessard; C. Masterson; J. E. McEnery; G. Mohanty; P. Moriarty; A. J. Rodgers; H. J. Rose; F. W. Samuelson; G. H. Sembroski; R. Srinivasan; T. C. Weeke; J. Zweerink

arXiv · astro-ph/9706142

TeV Observations of the Variability and Spectrum of Markarian 501

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Abstract

Markarian 501 is only the second extragalactic source to be detected with high statistical certainty at TeV energies; it is similar in many ways to Markarian 421. The Whipple Observatory gamma-ray telescope has been used to observe the AGN Markarian 501 in 1996 and 1997, the years subsequent to its initial detection. The apparent variability on the one-day time-scale observed in TeV gamma rays in 1995 is confirmed and compared with the variability in Markarian 421. Observations at X-ray and optical wavelengths from 1997 are also presented.

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J. Quinn, I. H. Bond, P. J. Boyle, J. H. Buckley, S. M. Bradbury, A. C. Breslin, A. M. Burdett, J. Bussons Gordo, D. A. Carter-Lewis, M. Catanese, M. F. Cawley, D. J. Fegan, J. P. Finley, J. A. Gaidos, A. Hall, A. M. Hillas, F. Krennrich, R. C. Lamb, R. W. Lessard, C. Masterson, J. E. McEnery, G. Mohanty, P. Moriarty, A. J. Rodgers, H. J. Rose, F. W. Samuelson, G. H. Sembroski, R. Srinivasan, T. C. Weeke, J. Zweerink. 1997-06-15. TeV Observations of the Variability and Spectrum of Markarian 501. https://arxiv.org/abs/astro-ph/9706142

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