# ICRC2015

July 29, 2015 to August 6, 2015
World Forum
Europe/Amsterdam timezone

## Constant Intensity Method in IceTop

Aug 4, 2015, 4:00 PM
1h
Amazon Foyer (World Forum)

### Amazon Foyer

#### World Forum

Churchillplein 10 2517 JW Den Haag The Netherlands
Board: 211
Poster contribution CR-EX

### Speaker

Mr Ramesh Koirala (University of Delaware)

### Description

The Constant Intensity method is used to study how signals in IceTop, the surface component of the IceCube Neutrino Observatory, are attenuated by the atmosphere as a function of zenith angle and primary energy. IceTop analyses so far have only used data with zenith angles less than 40$^o$. A goal of this analysis is to extend the standard IceTop reconstruction to larger zenith angles. Showers are classified by the signal strength at 125 m from the shower core, determined from the fitted lateral distribution. The resulting signal distributions are corrected for attenuation using the constant intensity method and projected to a reference angle of 27$^o$. Finally, a Gaisser-Hillas type function is used to fit the attenuation curve. The shower maximum parameter, X$_{max}$, from this fit is compared with results from other detectors.
Registration number following "ICRC2015-I/" 919 IceCube

### Primary author

Mr Ramesh Koirala (University of Delaware)

### Presentation materials

There are no materials yet.