Publications de Jennifer Maria Frieden

Search for gamma-ray spectral lines from dark-matter annihilation with the DAMPE satellite

The annihilation of dark-matter particles may lead to the production of monochromatic gamma-ray emission. In this contribution, the search for spectral lines in the gamma-ray spectrum, using eight years of data collected with the space-borne Dark Matter Pa ...

EDP Sciences2025

Observation of a Spectral Hardening in Cosmic Ray Boron Spectrum with the DAMPE Space Mission

Jennifer Maria Frieden, Chiara Perrina

Secondary cosmic ray fluxes are important probes of the propagation and interaction of high-energy particles in the Galaxy. Recent measurements of primary and secondary cosmic ray nuclei have revealed unexpected spectral features that demand a deeper under ...

2025

Indirect search for dark matter in the gamma-ray flux with the DAMPE space mission

Jennifer Maria Frieden

Modern cosmological models include a nearly neutral, non-baryonic form of matter with extremely low speed in the context of structure formation, commonly known as ``cold dark matter''. Astrophysical observations indicate that dark matter constitutes 26.4% ...

EPFL2025

Simultaneous Irradiation and Testing for Radiation Damage Evaluation in Actively Biased SiPMs and Other Devices

Jennifer Maria Frieden, Chiara Perrina

A portable opto-electronic device test bench together with a neutron irradiation setup at Reactor Argentino 1 (RA-1) facility in Buenos Aires (Argentina) is presented. The irradiation with neutrons is performed to reproduce the expected damage the devices ...

Institute of Electrical and Electronics Engineers Inc.2024

A deep learning method for the trajectory reconstruction of cosmic rays with the DAMPE mission

Jennifer Maria Frieden, Xin Wu, Arshia Ruina, Chiara Perrina, Andrii Kotenko

A deep learning method for the particle trajectory reconstruction with the DAMPE experiment is presented. The developed algorithms constitute the first fully machine-learned track reconstruction pipeline for space astroparticle missions. Significant perfor ...

ELSEVIER2023

Search for relativistic fractionally charged particles in space

Songmei Wu, Johan Juul Chang, Zhirui Xu, Jennifer Maria Frieden, Siyuan Wang, Junqiu Liu, Jian Wang, Yi Zhang, Yong Yang, Hao Liu, Ming Gao, Cheng Zhao, Xuan Li, Arshia Ruina, Chiara Perrina, Andrii Kotenko, Wenyu Zhang, Xiao Wang, Yi Wang, Wei Li, Jie Chen, Shuai Liu, Yao Zhang

More than a century after the performance of the oil drop experiment, the possible existence of fractionally charged particles (FCPs) still remains unsettled. The search for FCPs is crucial for some extensions of the Standard Model in particle physics. Mos ...

American Physical Society2022

Detection of spectral hardenings in cosmic-ray boron-to-carbon and boron-to-oxygen flux ratios with DAMPE

Jennifer Maria Frieden, Chiara Perrina

Boron nuclei in cosmic rays (CRs) are believed to be mainly produced by the fragmentation of heavier nuclei, such as carbon and oxygen, via collisions with the interstellar matter. Therefore, the boron-tocarbon flux ratio (B/C) and the boron-to-oxygen flux ...

ELSEVIER2022