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Long-Term Observations of the Blazar Mrk 501 with the GT-48 Cherenkov Telescope
- Source :
- Astronomy Letters. 45:1-9
- Publication Year :
- 2019
- Publisher :
- Pleiades Publishing Ltd, 2019.
-
Abstract
- The galaxy Mrk 501 has been monitored with the GT-48 Cherenkov telescope at the Crimean Astrophysical Observatory for 14 years (1997–2010). Very-high-energy (VHE) gamma-ray photons have been recorded from Mrk 501 with a total significance of 15σ. The arrival directions of VHE gamma-ray photons have been mapped. They have been identified with Mrk 501. The TeV fluxes from Mrk 501 are shown to be highly variable. The light curves from the data of Cherenkov telescopes and the telescopes that observed Mrk 501 at high energies (MeV and GeV) and in the X-ray and optical bands are presented. Based on the GT-48 observations, we have constructed a TeV spectrum and determined the differential spectral index. The fluxes and spectral characteristics of Mrk 501 inferred from the GT-48 observations are consistent with the data of the MAGIC and H.E.S.S. Collaborations, respectively.
- Subjects :
- Physics
Spectral index
Active galactic nucleus
010308 nuclear & particles physics
Astrophysics::High Energy Astrophysical Phenomena
Astrophysics::Instrumentation and Methods for Astrophysics
Astronomy and Astrophysics
Astrophysics::Cosmology and Extragalactic Astrophysics
Astrophysics
Light curve
01 natural sciences
law.invention
Telescope
Space and Planetary Science
Observatory
law
0103 physical sciences
MAGIC (telescope)
Blazar
010303 astronomy & astrophysics
Astrophysics::Galaxy Astrophysics
Cherenkov radiation
Subjects
Details
- ISSN :
- 15626873 and 10637737
- Volume :
- 45
- Database :
- OpenAIRE
- Journal :
- Astronomy Letters
- Accession number :
- edsair.doi...........87421acfe212339c3799310d63c93bec