Late arriving particles in cosmic ray air showers and determination of UHECR energies by AGASA

Hans Joachim Drescher; Glennys R. Farrar

doi:10.1016/j.astropartphys.2005.08.002

Late arriving particles in cosmic ray air showers and determination of UHECR energies by AGASA

Hans Joachim Drescher, Glennys R. Farrar

Research output: Contribution to journal › Article › peer-review

Abstract

We give the first detailed study of the arrival time distribution of nucleons in UHECR air showers. We analyze in detail the influence of late arriving particles on the energy determination of the AGASA experiment, as well as how the arrival time distribution changes with distance from shower core. Our calculations are consistent with experimental observations of the AGASA group. Crucial to obtaining agreement, is the correct implementation of the energy loss for low-energy protons. We confirm AGASA's estimation of the error in their energy determination associated with late-arriving particles, assuming primary protons.

Original language	English (US)
Pages (from-to)	372-381
Number of pages	10
Journal	Astroparticle Physics
Volume	24
Issue number	4-5
DOIs	https://doi.org/10.1016/j.astropartphys.2005.08.002
State	Published - Dec 2005

Keywords

AGASA
Air shower
Arrival time
Cosmic rays
Stimulating of air showers

ASJC Scopus subject areas

Astronomy and Astrophysics

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10.1016/j.astropartphys.2005.08.002

Cite this

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title = "Late arriving particles in cosmic ray air showers and determination of UHECR energies by AGASA",

abstract = "We give the first detailed study of the arrival time distribution of nucleons in UHECR air showers. We analyze in detail the influence of late arriving particles on the energy determination of the AGASA experiment, as well as how the arrival time distribution changes with distance from shower core. Our calculations are consistent with experimental observations of the AGASA group. Crucial to obtaining agreement, is the correct implementation of the energy loss for low-energy protons. We confirm AGASA's estimation of the error in their energy determination associated with late-arriving particles, assuming primary protons.",

keywords = "AGASA, Air shower, Arrival time, Cosmic rays, Stimulating of air showers",

author = "Drescher, {Hans Joachim} and Farrar, {Glennys R.}",

note = "Funding Information: HJD acknowledges support from NASA grant NAG 9246, and from the German BMBF/DESY grant 05CT2RFA/7; GRF is supported by NASA grant NAG-9246 and NSF-PHY-0101738. Funding Information: Computations were done on computer clusters at NYU financed in part by the Major Research Instrumentation grant NSF-PHY-0116590 and at the Center for Scientific Computing, Frankfurt am Main. ",

year = "2005",

month = dec,

doi = "10.1016/j.astropartphys.2005.08.002",

language = "English (US)",

volume = "24",

pages = "372--381",

journal = "Astroparticle Physics",

issn = "0927-6505",

publisher = "Elsevier",

number = "4-5",

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T1 - Late arriving particles in cosmic ray air showers and determination of UHECR energies by AGASA

AU - Drescher, Hans Joachim

AU - Farrar, Glennys R.

N1 - Funding Information: HJD acknowledges support from NASA grant NAG 9246, and from the German BMBF/DESY grant 05CT2RFA/7; GRF is supported by NASA grant NAG-9246 and NSF-PHY-0101738. Funding Information: Computations were done on computer clusters at NYU financed in part by the Major Research Instrumentation grant NSF-PHY-0116590 and at the Center for Scientific Computing, Frankfurt am Main.

PY - 2005/12

Y1 - 2005/12

N2 - We give the first detailed study of the arrival time distribution of nucleons in UHECR air showers. We analyze in detail the influence of late arriving particles on the energy determination of the AGASA experiment, as well as how the arrival time distribution changes with distance from shower core. Our calculations are consistent with experimental observations of the AGASA group. Crucial to obtaining agreement, is the correct implementation of the energy loss for low-energy protons. We confirm AGASA's estimation of the error in their energy determination associated with late-arriving particles, assuming primary protons.

AB - We give the first detailed study of the arrival time distribution of nucleons in UHECR air showers. We analyze in detail the influence of late arriving particles on the energy determination of the AGASA experiment, as well as how the arrival time distribution changes with distance from shower core. Our calculations are consistent with experimental observations of the AGASA group. Crucial to obtaining agreement, is the correct implementation of the energy loss for low-energy protons. We confirm AGASA's estimation of the error in their energy determination associated with late-arriving particles, assuming primary protons.

KW - AGASA

KW - Air shower

KW - Arrival time

KW - Cosmic rays

KW - Stimulating of air showers

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DO - 10.1016/j.astropartphys.2005.08.002

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SN - 0927-6505

VL - 24

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EP - 381

JO - Astroparticle Physics

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ER -

Late arriving particles in cosmic ray air showers and determination of UHECR energies by AGASA

Abstract

Keywords

ASJC Scopus subject areas

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