Evidence for a QPO structure in the TeV and X-ray light curve during the 1997 high state γ emission of Mkn 501
Abstract
The BL Lac Object Mkn 501 was in a state of high activity in the TeV range in 1997. During this time Mkn 501 was observed by all Cherenkov-Telescopes of the HEGRA-Collaboration. Part of the data were also taken during moonshine thus providing a nearly continuous coverage for this object in the TeV-range. We have carried out a QPO analysis and found evidence for a 23 day periodicity. We applied the same analysis on the 'data by dwell' x-ray lightcurve from the RXTE/ASM database and found also evidence for the 23 day periodicity. The combined probability was -.
- Publication:
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26th International Cosmic Ray Conference (ICRC26), Volume 3
- Pub Date:
- August 1999
- DOI:
- 10.48550/arXiv.astro-ph/9907205
- arXiv:
- arXiv:astro-ph/9907205
- Bibcode:
- 1999ICRC....3..358K
- Keywords:
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- Astrophysics
- E-Print:
- 4 Pages, 7 Figures