19 citations · 26 across the 6 of their papers we have counts for
6 papers
Multi-Period Fermi-LAT and LHAASO Constraints on Axion-Like Particles from Mrk 421 via Profile Likelihood with Gaussian Copula Correlation
Longhua Qin, Jiancheng Wang, Chuyuan Yang +9
We present a joint multi-period analysis of axion-like particles (ALPs) using five sets of simultaneous Fermi-LAT and LHAASO observations of the TeV blazar Mrk~421. Photon-ALP osci…
Optical Monitoring and Long-term Optical Spectral Variability of BL Lacertae Object S5 0716+714
Huai-Zhen Li, Di-Fu Guo, Long-Hua Qin +7
We present photometric observations of the BL Lacertae object S5 0716+714 with a temporal resolution of 120 s in the Sloan i' and r' bands. These observations were conducted using…
Constraints on Extragalactic Background Light using TeV Observations of BL Lacertae objects
Longhua Qin, Jiancheng Wang, Quangui Gao +5
The extragalactic background light (EBL) in the IR to UV bands partly absorbs very high energy (VHE, 100GeV) ray photons travelling over cosmological distances via pai…
The gamma-ray and Optical Variability Analysis of the BL Lac Object 3FGL J0449.4-4350
Xing Yang, Tingfeng Yi, Yan Zhang +4
We have assembled the historical light curves of the BL Lac Object 3FGL J0449.4-4350 at optical and gamma-ray bands, the time spanning about 10 years, analyzed the periodic variabi…
The Broad Band Spectral Energy Distributions of SDSS Blazars
Huaizhen Li, Luoen Chen, Yunguo Jiang +1
We compiled the radio, optical, and X-ray data of blazars from the Sloan Digital Sky Survey (SDSS) database, and presented the distribution of luminosities and broad band spectral…
Method of determining cosmological parameter ranges with samples of candles with an intrinsic distribution
Yi-Ping Qin, Bin-Bin Zhang, Yun-Ming Dong +8
In this paper, the effect of the intrinsic distribution of cosmological candles is investigated. We find that, in the case of a narrow distribution, the deviation of the observed m…