EPJ Web Conf.
Volume 210, 2019Ultra High Energy Cosmic Rays 2018 (UHECR 2018)
|Number of page(s)||7|
|Section||Spectrum, Anisotropies, Mass Composition|
|Published online||17 May 2019|
Depth of maximum of air-shower profiles: testing the compatibility of measurements performed at the Pierre Auger Observatory and the Telescope Array experiment
Institute of Physics of the Czech Academy of Sciences, Prague, Czech Republic
2 University of Adelaide, Adelaide, S.A., Australia
3 High Energy Astrophysics Institute & Department of Physics and Astronomy, University of Utah, Salt Lake City, USA
4 Instituto de Física de Säo Carlos, Universidade de Säo Paulo, Säo Carlos, Brasil
5 Institute for Cosmic Ray Research, University of Tokyo, Kashiwa, Chiba, Japan
6 Graduate School of Science, Osaka City University, Osaka, Osaka, Japan
7 Karlsruhe Institute of Technology, Institut für Kernphysik, Karlsruhe, Germany
8 Observatorio Pierre Auger, Av. San Martín Norte 304, 5613, Malargüe, Argentina
9 Telescope Array Project, 201 James Fletcher Bldg, 115 S. 1400 East, Salt Lake City, UT 84112 0830, USA
* e-mail: email@example.com Full author list: http://www.auger.org/archive/authors_2018_10.html
** e-mail: firstname.lastname@example.org Full author list: http://www.telescopearray.org/research/collaborators
Published online: 17 May 2019
At the Pierre Auger Observatory and the Telescope Array, the measurements of depths of maximum of airshower profiles, Xmax, are performed using direct observations of the longitudinal development of showers with the help of the fluorescence telescopes. Though the same detection technique is used at both installations, the straightforward comparison of the characteristics of the measured Xmax distributions is not possible due to the different approaches to the analysis of the recorded events. In this work, the Auger – Telescope Array composition working group presents a technique to compare the Xmax measurements from the Auger Observatory and the Telescope Array. Applying this technique the compatibility of the first two moments of the measured Xmax distributions is qualitatively tested for energies 1018.2 eV < E < 1019.0 eV using the recently published Telescope Array data from the Black Rock Mesa and Long Ridge fluorescence detector stations. For a quantitative comparison, simulations of air showers with EPOS-LHC, folded with effects of the Telescope Array detector, are required along with the inclusion in the analysis of the systematic uncertainties in the measurements of Xmax and the energies of the events.
© The Authors, published by EDP Sciences, 2019
This is an open access article distributed under the terms of the Creative Commons Attribution License 4.0 (http://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.