van Eldik C (2007)
Publication Status: Published
Publication Type: Journal article, Original article
Publication year: 2007
Publisher: EDP Sciences
Book Volume: 466
Pages Range: 543-554
Journal Issue: 2
DOI: 10.1051/0004-6361:20066737
Aims. We present the results of a search for pulsed very-high-energy (VHE) γ-ray emission from young pulsars using data taken with the HESS imaging atmospheric Cherenkov telescope system. Methods. Data on eleven pulsars, selected according to their spin-down luminosity relative to distance, are searched for y-ray signals with periodicity at the respective pulsar spin period. Special analysis efforts were made to improve the sensitivity in the 100 GeV γ-ray energy domain in an attempt to reduce the gap between satellite and ground-based γ-ray instruments. Results. No significant evidence for pulsed emission is found in any data set. Differential upper limits on pulsed energy flux are determined for all selected pulsars in the approximate γ-ray energy range between 100 GeV and 50 TeV, using different limit determination methods, testing a wide range of possible pulsar light curves and energy spectra. Conclusions. The limits derived here imply that the magnetospheric VHE γ-ray production efficiency in young pulsars is less than 10 of the pulsar spin-down luminosity, requiring spectral turnovers for the high-energy emission of four established γ-ray pulsars, and constrain the inverse Compton radiation component predicted by several outer gap models. © ESO 2007.
APA:
van Eldik, C. (2007). Search for pulsed VHE gamma-ray emission from young pulsars with HESS. Astronomy & Astrophysics, 466(2), 543-554. https://doi.org/10.1051/0004-6361:20066737
MLA:
van Eldik, Christopher. "Search for pulsed VHE gamma-ray emission from young pulsars with HESS." Astronomy & Astrophysics 466.2 (2007): 543-554.
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