EGRET Gamma-Ray Observations of PSR B1706$-$44

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Session 78 -- Pulsars and Neutron Stars
Display presentation, Wednesday, 11, 1995, 9:20am - 6:30pm

[78.03] EGRET Gamma-Ray Observations of PSR B1706$-$44

D.J. Thompson, D.L. Bertsch, C.E. Fichtel, R.C. Hartman, S.D. Hunter (NASA/GSFC), B.L. Dingus, J.A. Esposito, R. Mukherjee, J.R. Mattox (USRA/GSFC), G. Kanbach, H.A. Mayer-Hasselwander, M. Merck (MPE), C. von Montigny, P.V. Ramanamurthy (NAS/NRC), J.M. Fierro, Y.C. Lin, P.F. Michelson, P.L. Nolan (Stanford), D.A. Kniffen (Hampden-Sydney), E.J. Schneid (Grumman)

Observations with the Energetic Gamma Ray Experiment Telescope (EGRET) on the Compton Observatory have shown that radio pulsar PSR B1706$-$44 is a source of pulsed high-energy gamma radiation. With additional data, new details of the gamma radiation are found: The light curve appears to consist of two closely-space peaks. There is little, if any, unpulsed emission. The energy spectrum does not show significant evidence of a spectral break in the few GeV range, unlike the other pulsars seen by EGRET. These results, especially when combined with the ROSAT X-Ray (Becker et al. IAU Circ. No. 5554) and TeV gamma-ray observations (Kifune et al. IAU Circ. No. 5905) of this source, emphasize the diversity seen among the known gamma-ray pulsars.

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