Speaker
Dr
Alessio Porcelli
(Universite de Geneve (CH))
Description
For the first time the Pierre Auger Collaboration presents $\langle X_\mathrm{max}\rangle$ and $\sigma(X_\mathrm{max})$ measurements covering nearly three decades of energy. In this analysis we include new $X_\mathrm{max}$ data obtained with the Pierre Auger High Elevation Fluorescence Telescopes (HEAT) enhancement. The HEAT telescopes cover a field of view ranging from $30^\circ$ to $60^\circ$ of elevation and are located next to one of the standard fluorescence detector sites (Coihueco). The combination of the HEAT and Coihueco telescopes covers a field of view from ${\sim}2^\circ$ up to ${\sim}60^\circ$ of elevation. Thus, they can sample the atmospheric longitudinal profile of nearby lower energy showers allowing us to extend the energy range down to $10^{17}\,$eV.
| Registration number following "ICRC2015-I/" | 631 |
|---|---|
| Collaboration | Pierre Auger |
Primary author
Dr
Alessio Porcelli
(Universite de Geneve (CH))
