Zobrazeno 1 - 10
of 265
pro vyhledávání: '"Yan, Dahai"'
Autor:
Tang, Ruijing, Yan, Dahai, Zhang, Haiyun, Zhao, Qingchang, Tao, Lian, Li, Chengkui, Ge, Mingyu, Li, Xiaobo, Yin, Qianqing, Cai, Ce
Gaussian processes method is employed to analyze the light curves of bursts detected by Insight-HXMT, NICER, and GECAM from SGR 1935+2154 between 2020 to 2022. It is found that a stochastically driven damped simple harmonic oscillator (SHO) is necess
Externí odkaz:
http://arxiv.org/abs/2404.12976
Intrigued by recent high-energy study results for nearby galaxies with gamma-ray emission and in particular NGC~1068 that has been detected as a neutrino-emitting source by the IceCube Neutrino Observatory, we conduct detailed analysis of the $\gamma
Externí odkaz:
http://arxiv.org/abs/2307.05142
Blazar jet structure can be indirectly resolved by analyzing the multiwavelength variability. In this work, we analyze the long-term variability of blazars in radio, optical and X-ray energies with the Gaussian process (GP) method. The multiwavelengt
Externí odkaz:
http://arxiv.org/abs/2301.01025
Characterizing the $\gamma$-Ray Variability of Active Galactic Nuclei with Stochastic Process Method
The $\gamma$-ray astronomy in time domain has been by now progressed further as the variabilities of Active Galactic Nuclei (AGNs) on different timescales have been reported a lot. We study the $\gamma$-ray variabilities of 23 jetted AGNs through app
Externí odkaz:
http://arxiv.org/abs/2204.09987
The $\gamma$-ray spectral feature of the blazar 1ES 0502+675 is investigated by using Fermi Large Area Telescope (Fermi-LAT) Pass 8 data (between 100 MeV and 300 GeV) covering from 2008 August to 2021 April. A significant ($\sim4\sigma$) hardening at
Externí odkaz:
http://arxiv.org/abs/2201.02508
Publikováno v:
In Journal of Environmental Management May 2024 358
Autor:
Hu, Wen, Yan, DaHai
Using a time-dependent one-zone leptonic model that incorporates both shock acceleration and stochastic acceleration processes, we investigate the formation of the narrow spectral feature at $\sim3$ TeV of Mrk 501 which was observed during the X-ray
Externí odkaz:
http://arxiv.org/abs/2108.10468
Publikováno v:
In Environmental Pollution 1 September 2024 356
Long-term gamma-ray variability of a non-blazar Active Galactic Nucleus (AGN) PKS 0521-36 is investigated by using Fermi-LAT pass 8 data covering from 2008 August to 2021 March. The results show that the histogram of the gamma-ray fluxes follows a lo
Externí odkaz:
http://arxiv.org/abs/2106.10040
Publikováno v:
In Journal of Cleaner Production 15 April 2024 450