3-11 July 2007
Merida, Mexico
Mexico/General timezone
- icrc2007@icrc2007.unam.mx
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Contribution Poster (WITHDRAWN)
HE.1.4.A
An average longitudinal profile of UHECR air showers measured by HiRes experiment
Speakers
- Bingkai ZHANG
Primary authors
- Bingkai ZHANG (Institute of High Energy, Beijing, China)
Co-authors
- Zhen CAO (Institute of High Energy, Beijing, China)
Abstract content
In this paper, the average EAS longitudinal development profile is measured using HiRes stereoscopic data. Event by event the shower longtitudinal curve is obtained. The shower maximum is found out using a local fitting. After normalizing by shower maximum size and age an average longitudinal profile is obtainned. Several functions are tested in fitting this average profile. The Gaisser-Hillas and Gaussian-in-Age functions are found to describe the average behavior well. In addition, energy and Xmax dependences of the average profile are discussed.
If this papers is presented for a collaboration, please specify the collaboration
HiRes Collaboration