Astronomy and Astrophysics – Astrophysics
Scientific paper
2001-01-03
AIP Conf.Proc. 558 (2001) 103-114
Astronomy and Astrophysics
Astrophysics
To appear in International Symposium on High-Energy Gamma-Ray Astronomy, Heidelberg, Germany. 12 pages, 8 figures
Scientific paper
10.1063/1.1370784
High-energy gamma rays are a valuable tool for studying particle acceleration and radiation in the magnetospheres of energetic pulsars. The six or more pulsars seen by CGRO/EGRET show that: the light curves usually have double-peak structures (suggesting a broad cone of emission); gamma rays are frequently the dominant component of the radiated power; and all the spectra show evidence of a high-energy turnover. Unless a new pulsed component appears at higher energies, progress in gamma-ray pulsar studies will be greatest in the 1-20 GeV range. Ground-based telescopes whose energy ranges extend downward toward 10 GeV should make important measurements of the spectral cutoffs. The Gamma-ray Large Area Space Telescope (GLAST), now in planning for a launch in 2005, will provide a major advance in sensitivity, energy range, and sky coverage.
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