TeV Observations of the Variability and Spectrum of Markarian 501.
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.
- Publication:
-
International Cosmic Ray Conference
- Pub Date:
- 1997
- DOI:
- 10.48550/arXiv.astro-ph/9706142
- arXiv:
- arXiv:astro-ph/9706142
- Bibcode:
- 1997ICRC....3..249Q
- Keywords:
-
- Astrophysics
- E-Print:
- 4 pages, 2 figures, to appear in proceedings of 25th ICRC (Durban)