dc.contributor.author | Hahn, J. | |
dc.contributor.author | Krüger, P. | |
dc.contributor.author | De los Reyes, R. | |
dc.contributor.author | Bernlöhr, K. | |
dc.contributor.author | Lo, Y.T.E. | |
dc.date.accessioned | 2015-11-04T06:28:38Z | |
dc.date.available | 2015-11-04T06:28:38Z | |
dc.date.issued | 2014 | |
dc.identifier.citation | Hahn, J. et al. 2014. Impact of aerosols and adverse atmospheric conditions on the data quality for spectral analysis of the H.E.S.S. telescopes. Astroparticle physics, 54: 25-32. [https://doi.org/10.1016/j.astropartphys.2013.10.003] | en_US |
dc.identifier.issn | 0927-6505 | |
dc.identifier.uri | http://hdl.handle.net/10394/14937 | |
dc.identifier.uri | http://www.sciencedirect.com/science/article/pii/S0927650513001540 | |
dc.identifier.uri | https://doi.org/10.1016/j.astropartphys.2013.10.003 | |
dc.description.abstract | The Earth’s atmosphere is an integral part of the detector in ground-based imaging atmospheric Cherenkov
telescope (IACT) experiments and has to be taken into account in the calibration. Atmospheric and
hardware-related deviations from simulated conditions can result in the mis-reconstruction of primary
particle energies and therefore of source spectra. During the eight years of observations with the High
Energy Stereoscopic System (H.E.S.S.) in Namibia, the overall yield in Cherenkov photons has varied
strongly with time due to gradual hardware aging, together with adjustments of the hardware components,
and natural, as well as anthropogenic, variations of the atmospheric transparency. Here we present
robust data selection criteria that minimize these effects over the full data set of the H.E.S.S. experiment
and introduce the Cherenkov transparency coefficient as a new atmospheric monitoring quantity. The
influence of atmospheric transparency, as quantified by this coefficient, on energy reconstruction and
spectral parameters is examined and its correlation with the aerosol optical depth (AOD) of independent
MISR satellite measurements and local measurements of atmospheric clarity is investigated | en_US |
dc.language.iso | en | en_US |
dc.publisher | Elsevier | en_US |
dc.subject | Cherenkov telescopes | en_US |
dc.subject | gamma-ray astronomy | en_US |
dc.subject | aerosols | en_US |
dc.subject | atmosphere | en_US |
dc.subject | MISR | en_US |
dc.subject | radiometer | en_US |
dc.title | Impact of aerosols and adverse atmospheric conditions on the data quality for spectral analysis of the H.E.S.S. telescopes | en_US |
dc.type | Article | en_US |
dc.contributor.researchID | 10103449 - Krüger, Petrus Paulus | |