# ICRC2015

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

## The Expected Angular Resolution Performance of the Tilted JEM-EUSO Instrument

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

### Amazon Foyer

#### World Forum

Churchillplein 10 2517 JW Den Haag The Netherlands
Board: 147
Poster contribution CR-IN

### Speaker

Dr Thomas Mernik (Institute for Astronomy and Astrophysics, University of Tübingen)

### Description

JEM-EUSO (The Extreme Universe Observatory onboard the Jap\-a\-nese Experiment Module) is a space borne UV-telescope which will be mounted on the ISS (International Space Station). It is designed for the observation of UHECR induced extensive air showers (EAS) above an energy of $10^{19}$ eV by using the earth's atmosphere as a large detector. Due to the amount of monitored target volume it gains an effective aperture of approx. $2 \cdot 10^5$ km$^2$ sr. During the mission lifetime, JEM-EUSO will observe several hundred of events above E = $5 \cdot 10^{19}$ eV, significantly improving the statistics in this part of the UHECR spectrum. The default operation mode of the instrument is envisaged to be along its nadir direction. However, in a later stage of the mission, a tilting of the telescope, away from its nadir direction, is discussed as a potential strategy to further increase the exposure at the highest energies. In the tilted mode operation the exposure would increase by a factor of 5 to 7. Hence, the regime of extreme energies above $10^{20}$ eV could be explored in a reasonable amount of time. Naturally, in this setup the angular resolution of the instrument is expected to decrease. In the scope of this work we evaluate the expected angular resolution performance of the JEM-EUSO instrument in dependence of the tilting angle.
Registration number following "ICRC2015-I/" 506 JEM-EUSO

### Primary author

Dr Thomas Mernik (Institute for Astronomy and Astrophysics, University of Tübingen)

### Co-authors

Mr Alejandro Guzman (Institute of Astronomy and Astrophysics, University of Tübingen) Prof. Andrea Santangelo (Institute for Astronomy and Astrophysics, University of Tübingen) Mr Elias Iwotschkin (Eberhard Karls University Tuebingen) Dr Francesco Fenu (Universita degli Studi di Torino) Mr Jörg Bayer (Institute for Astronomy and Astrophysics, University of Tübingen) Dr Kenji Shinozaki (Institute for Astronomy and Astrophysics, University of Tübingen) Dr Mario Bertaina (Universita degli Studi di Torino)

### Presentation materials

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