AtmoHEAD 2022

Session

The influence of the atmosphere on the measurements of present and future UHECR and Gamma-Ray experiments

13 Jul 2022, 09:30

1. THE INFLUENCE OF REDUCED ATMOSPHERIC TRANSMISSION ON THE CTA-NORTH PERFORMANCE

Mario Pecimotika (University of Rijeka, Faculty of Physics)

13/07/2022, 09:30

The Cherenkov Telescope Array (CTA) is the next generation ground-based observatory for gamma-ray astronomy at very-high energies which will consist of the northern (CTA-N, La Palma, Spain) and southern (CTA-S, Paranal, Chile) arrays. The atmosphere, as an integral part of the Cherenkov telescope detector, has a great impact on the observed data, especially in means of reduced sensitivity. One...

11. Aerosol Measurements at Sub-per-cent Precision Using Wide-field Stellar Photometry

Jan Ebr

13/07/2022, 10:00

Wide-field stellar photometry – the process of simultaneous comparison of apparent and catalog brightness of a large amount of stars – has long been a promising method of atmospheric monitoring, as it can provide atmospheric transparency measurements with high temporal and spatial resolution without any artificial illumination of the sky which would disturb nearby optical experiments. However...

5. Assessing aerosol induced errors in Monte Carlo based air-shower reconstruction for atmospheric Cherenkov detectors

Dr Tim Lukas Holch (Deutsches Elektronen-Synchrotron DESY)

13/07/2022, 10:30

Aerosol levels influence the wavelength dependent transmission properties of the atmosphere. Variations in aerosol levels therefore affect the amount of Cherenkov light from air showers that can reach an atmospheric Cherenkov detector. As the amount of detected Cherenkov light is directly related to a primary shower particle's energy, deviations between actual and assumed atmospheric...

14. Improved Point Spread Function Correction for Aerosol Measurements Using Wide-field Stellar Photometry

Shefali Negi

13/07/2022, 11:30

When using wide-field stellar photometry to measure Vertical Aerosol Optical Depth (VAOD), we model the dependence of measured stellar fluxes on the star color and position within the field of view of the imaging system in order to control systematic uncertainties introduced through those dependencies. In wide-field imagers, the Point Spread Function (PSF) varies significantly across the...

27. Atmospheric Aerosols Light Attenuation using the Telescope Array Central Laser Facility

Tareq AbuZayyad

13/07/2022, 12:00

The Telescope Array (TA) experiment measures the properties of ultra-high energy cosmic ray (UHECR) induced extensive air showers. TA employs a hybrid detector comprised of a large surface array of scintillator detectors overlooked by three fluorescence telescopes stations. TA has been collecting data since ~2008. The TA Low Energy extension (TALE) detector, comprised of 10 fluorescence...

28. Atmospheric monitoring at the Pierre Auger Observatory and effects of aerosol attenuation on UHECR detection

Bianca Keilhauer (Karlsruhe Institute of Technology KIT), Laura Valore (Istituto Nazionale di Fisica Nucleare)

13/07/2022, 12:30

The Pierre Auger Observatory is detecting ultra-high energy cosmic rays (UHECR) since the early 2000s years in the Pampa Amarilla, Argentina. It is composed of different detection techniques which requires the monitoring of several aspects of atmospheric conditions along with the UHECR detection. We are presenting the multitude of atmospheric monitoring devices and their application in air...