3 papers
astro-ph1999
Are Galactic Gamma-Ray Bursters the Main Source of Hadronic Non-Solar Cosmic Rays at all Energies?
R. Plaga, O. C. de Jager, A. Dar
We propose a new hypothesis for the origin of non-solar hadronic cosmic rays (CRs) at all energies: Highly relativistic, narrowly collimated jets from the birth or collapse of neut…
astro-ph1999
Evidence for a QPO structure in the TeV and X-ray light curve during the 1997 high state Gamma emission of Mkn 501
D. Kranich, O. C. De Jager, M. Kestel +2
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. Pa…
astro-ph1997
Absorption of Intergalactic TeV Gamma-Rays
F. W. Stecker, O. C. De Jager
We discuss the problem of the absorption of very high-energy gamma-rays by pair production interactions with extragalactic photons which originate from stellar emission in the near…