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11 papers · 2 filters
Microvariability Detection of Mrk 421
Xu Chen, ShaoMing Hu, DiFu Guo
The BL Lac object Mrk 421 was observed in optical bands from 2009 April to 2012 May with the 1.0 m telescope at Weihai Observatory of Shandong University. Microvariability was anal…
TeV gamma-ray survey of the Northern sky using the ARGO-YBJ detector
YBJ Collaboration, B. Bartoli, P. Bernardini +94
The ARGO-YBJ detector is an extensive air shower array that has been used to monitor the northern -ray sky at energies above 0.3 TeV from 2007 November to 2013 January. In this…
Gamma-ray burst polarization via Compton scattering process
Zhe Chang, Hai-Nan Lin, Yunguo Jiang
Synchrotron radiation and Compton scattering are widely accepted as the most likely emission mechanisms of some astrophysical phenomena, such as gamma-ray bursts (GRBs) and active…
Variability of OI 090.4
Shao Ming Hu, Xu Chen, Di Fu Guo
OI 090.4 was monitored on 21 nights from 2006 to 2012 for studying the variability. Strong variations occurred during the past 6 years. The long-term variability amplitude is consi…
The 72-Hour WEBT Microvariability Observation of Blazar S5 0716+714 in 2009
G. Bhatta, J. R. Webb, H. Hollingsworth +42
Context. The international whole earth blazar telescope (WEBT) consortium planned and carried out three days of intensive micro-variability observations of S5 0716+714 from Februar…
Simulation study on origin of multi-core events in cosmic rays extensive air showers
Yonggang Luo, Shuwang Cui, Xinhua Ma +2
Some experiments have found multi-core events in cosmic rays extensive air showers which should be interpreted by hadronic interaction theory. In this paper, the multi-core events…