The latest result on UHE-photons at the Pierre Auger Observatory

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F25%3A00640472" target="_blank" >RIV/68378271:_____/25:00640472 - isvavai.cz</a>

Alternative codes found

RIV/61989592:15310/25:73634831

Result on the web

<a href="https://www.epj-conferences.org/articles/epjconf/pdf/2025/04/epjconf_ricap2024_06008.pdf" target="_blank" >https://www.epj-conferences.org/articles/epjconf/pdf/2025/04/epjconf_ricap2024_06008.pdf</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1051/epjconf/202531906008" target="_blank" >10.1051/epjconf/202531906008</a>

Result language

angličtina

Original language name

The latest result on UHE-photons at the Pierre Auger Observatory

Original language description

The Pierre Auger Observatory is the most sensitive detector to primary photons with energies above 0.2 EeV providing unprecedented exposure to ultrahigh- energy (UHE) cosmic rays and specifically to UHE photons. The Observatory measures extensive air showers using a hybrid technique that combines a fluorescence detector (FD) with a ground array of particle detectors (SD). The signatures of a photon-induced air shower are a larger atmospheric depth of the shower maximum (Xmax) and a steeper lateral distribution function, along with a lower number of muons with respect to the bulk of hadron-induced background. Using observables measured by the FD and SD, various photon searches in different energy bands are performed. These efforts have produced some of the most stringent upper limits on the diffuse fluxes of UHE photons. These limits place significant constraints on current models for the origin of UHE cosmic rays, highlighting the leading role of the Observatory in multimessenger astronomy at the highest energies. In this contribution, an overview of current activities related to the search for UHE photons is shown, using more than 15 years of data from the Pierre Auger Observatory. The latest results of the searches for diffuse fluxes of photons will be presented, as well as follow-up searches for UHE photons in association with transient events, such as gravitational wave events, will be summarized.

Czech name

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Czech description

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Type

D - Article in proceedings

CEP classification

—

OECD FORD branch

10303 - Particles and field physics

Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2025

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection

EPJ Web of Conferences

ISBN

—

ISSN

2100-014X

e-ISSN

—

Number of pages

4

Pages from-to

06008

Publisher name

E D P Science

Place of publication

Les Ulis

Event location

Roma

Event date

Sep 23, 2024

Type of event by nationality

WRD - Celosvětová akce

UT code for WoS article

001448416000027