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Confining Burst Energy Function and Spectral Fringe Pattern of FRB 20121102A with Multifrequency Observations
Fen Lyu, Ji-Gui Cheng, En-Wei Liang +3
The observed spectral shapes variation and tentative bimodal burst energy distribution (E-distribution) of fast radio burst (FRB) 20121102A with the FAST telescope are great puzzle…
High-Frequency and High-Resolution VLBI Observations of GHz Peaked Spectrum Objects
Xiaopeng Cheng, Tao An, Ailing Wang +1
Observational studies of GHz peaked spectrum (GPS) sources contribute to the understanding of the radiative properties and interstellar environment of host galaxies. We present the…
Spectral analysis of a parsec-scale jet in M87: Observational constraint on the magnetic field strengths in the jet
Hyunwook Ro, Motoki Kino, Bong Won Sohn +49
Because of its proximity and the large size of its black hole, M87 is one of the best targets for studying the launching mechanism of active galactic nucleus jets. Currently, magne…
Interactions between the jet and disk wind in a nearby radio intermediate quasar III Zw 2
Ailing Wang, Tao An, Shaoguang Guo +13
Disk winds and jets are ubiquitous in active galactic nuclei (AGN), and how these two components interact remains an open question. We study the radio properties of a radio-interme…
Is the X-ray bright z = 5.5 quasar SRGE J170245.3+130104 a blazar?
Tao An, Ailing Wang, Yuanqi Liu +11
Jets may have contributed to promoting the growth of seed black holes in the early Universe, and thus observations of radio-loud high-redshift quasars are crucial to understanding…
Radio Jet Proper-motion Analysis of Nine Distant Quasars above Redshift 3.5
Yingkang Zhang, Tao An, Sandor Frey +2
Up to now, jet kinematic studies of radio quasars have barely reached beyond the redshift range at . This significantly limits our knowledge of high-redshift jets, which can…