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pro vyhledávání: '"Chen, Songzhan"'
With great advance of ground-based extensive air shower array, such as LHAASO and HAWC, many very high energy (VHE) gamma-ray sources have been discovered and are been monitored regardless of the day and the night. Hence, the Sun and Moon would have
Externí odkaz:
http://arxiv.org/abs/2405.12492
Publikováno v:
Annual Review of Nuclear and Particle Science, Volume 73 (2023), page 341-363
Ultra-High Energy (UHE, $>$0.1\,PeV) $\gamma$-ray Astronomy is rapidly evolving into an expanding branch of the $\gamma$-ray astronomy with the surprising discovery of 12 PeVatrons and the detection of a handful of photons above 1 PeV. Nearly all kno
Externí odkaz:
http://arxiv.org/abs/2310.01744
Publikováno v:
Liang Chen et al 2021 Chinese Phys. C 45 105105
The tiny modification of dispersion relation induced by Lorentz violation (LV) is an essential issue in quantum gravity (QG) theories, which can be magnified into significant effects when dealing with astrophysical observations at high energy and lon
Externí odkaz:
http://arxiv.org/abs/2105.07927
Cosmic rays can interact with the solar atmosphere and produce a slew of secondary messengers, making the Sun a bright gamma-ray source in the sky. Detailed observations with Fermi-LAT have shown that these interactions must be strongly affected by s
Externí odkaz:
http://arxiv.org/abs/2009.03888
Akademický článek
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Autor:
Liu, Ye, Cao, Zhen, Chen, Songzhan, Chen, Yang, Cui, Shuwang, He, Huihai, Huang, Xingtao, Ma, Xinhua, Yuan, Qiang, Zhang, Xiao
Supernova remnants (SNRs) are believed to be the most important acceleration sites for cosmic rays (CRs) below $\sim10^{15}$ eV in the Galaxy. High energy photons, either directly from the shocks of the SNRs or indirectly from the interaction between
Externí odkaz:
http://arxiv.org/abs/1605.05472
Autor:
Chen, Songzhan, Vernetto, Silvia
As one of the most active blazars, Mrk421 is an excellent candidate for the study of the physical processes within the jets of AGN. Here we report on the extensive multi-wavelength observations of Mrk 421 over 4.5 years, from 2008 August to 2013 Febr
Externí odkaz:
http://arxiv.org/abs/1510.01796
Publikováno v:
Chinese Physics C Vol.38,No.8(2014) 085001 1-8
MGRO J2019+37 within the Cygnus region is a bright and extended source revealed by Milagro at 12-35 TeV. This source is almost as bright as Crab Nebula in northern sky, while it is not confirmed by ARGO-YBJ around TeV. Up to now, no obvious counterpa
Externí odkaz:
http://arxiv.org/abs/1403.6338
Autor:
CHEN, SongZhan
Publikováno v:
Science China Physics, Mechanics & Astronomy, 2013, 56:1-12
The ground-based EAS array is usually operated with a high duty cycle (> 90%) and a large field of view (~2 sr), which can continuously monitor the sky. It is essential and irreplaceable to understand the gamma-ray emission mechanism and intrinsic ph
Externí odkaz:
http://arxiv.org/abs/1305.3991
Autor:
Wu, Sha, Chen, Liang, Chen, Songzhan, Gao, Wei, He, Huihai, Li, Cong, Li, Zhe, Liu, Jia, Liu, Ye, Lv, Hongkui, Nan, Yuncheng
Publikováno v:
In Astroparticle Physics December 2018 103:41-48
