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Volume 358 - 36th International Cosmic Ray Conference (ICRC2019) - GRI - Gamma Ray Indirect
H.E.S.S. Observations of Pulsars at Very High Energies
M. Spir-Jacob,* A. Djannati-Ataï, L. Mohrmann, G. Giavitto, B. Khelifi, B. Rudak, C. Venter, R. Zanin
*corresponding author
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Pre-published on: 2019 July 22
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We report on the detection of pulsations from PSR B1706-44 based on 28.3 hours of observations with the H.E.S.S. II array with CT5 in monoscopic mode. The lightcurve is similar to that obtained with the Fermi-LAT above 15 GeV and the pulsations exhibit a steep spectrum with index ~-3.8 in the sub 20 GeV to sub 100 GeV energy range. While a significant signal of ~1000 events is detected at energies ~70 GeV, it is not possible to either confirm or rule out a power-law behaviour of PSR B1706-44 spectrum in this range.
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