Detection of sub-100 GeV$\gamma$-ray pulsations from PSR B170644 with H.E.S.S. - Archive ouverte HAL Accéder directement au contenu
Communication Dans Un Congrès Année : 2021

Detection of sub-100 GeV$\gamma$-ray pulsations from PSR B170644 with H.E.S.S.

L. Mohrmann
G. Giavitto
B. Khelifi
B. Rudak
C. Venter
R. Zanin

Résumé

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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Dates et versions

hal-03034731 , version 1 (01-12-2020)

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M. Spir-Jacob, A. Djannati-Ataï, L. Mohrmann, G. Giavitto, B. Khelifi, et al.. Detection of sub-100 GeV$\gamma$-ray pulsations from PSR B170644 with H.E.S.S.. 36th International Cosmic Ray Conference, Jul 2019, Madison, United States. pp.799, ⟨10.22323/1.358.0799⟩. ⟨hal-03034731⟩
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