VLBI observations of the high-redshift X-ray bright blazar SRGE J170245.3+130104

Autor: Liu, Yuanqi, An, Tao, Guo, Shaoguang, Zhang, Yingkang, Wang, Ailing, Xu, Zhijun, Khorunzhev, Georgii, Sotnikova, Yulia, Mufakharov, Timur, Mikhailov, Alexander, Mingaliev, Marat

Publikováno v: A&A 685, A111 (2024)

Aims. The X-ray luminous and radio-loud AGN SRGE J170245.3+130104 discovered at z $\sim$ 5.5 provides unique chances to probe the SMBH growth and evolution with powerful jets in the early Universe. Methods. We present 1.35 - 5.1 GHz Very Long Baselin

Externí odkaz: http://arxiv.org/abs/2402.19202

Precessing jet nozzle connecting to a spinning black hole in M87

Autor: Cui, Yuzhu, Hada, Kazuhiro, Kawashima, Tomohisa, Kino, Motoki, Lin, Weikang, Mizuno, Yosuke, Ro, Hyunwook, Honma, Mareki, Yi, Kunwoo, Yu, Jintao, Park, Jongho, Jiang, Wu, Shen, Zhiqiang, Kravchenko, Evgeniya, Algaba, Juan-Carlos, Cheng, Xiaopeng, Cho, Ilje, Giovannini, Gabriele, Giroletti, Marcello, Jung, Taehyun, Lu, Ru-Sen, Niinuma, Kotaro, Oh, Junghwan, Ohsuga, Ken, Sawada-Satoh, Satoko, Sohn, Bong Won, Takahashi, Hiroyuki R., Takamura, Mieko, Tazaki, Fumie, Trippe, Sascha, Wajima, Kiyoaki, Akiyama, Kazunori, An, Tao, Asada, Keiichi, Buttaccio, Salvatore, Byun, Do-Young, Cui, Lang, Hagiwara, Yoshiaki, Hirota, Tomoya, Hodgson, Jeffrey, Kawaguchi, Noriyuki, Kim, Jae-Young, Lee, Sang-Sung, Lee, Jee Won, Lee, Jeong Ae, Maccaferri, Giuseppe, Melis, Andrea, Melnikov, Alexey, Migoni, Carlo, Oh, Se-Jin, Sugiyama, Koichiro, Wang, Xuezheng, Zhang, Yingkang, Chen, Zhong, Hwang, Ju-Yeon, Jung, Dong-Kyu, Kim, Hyo-Ryoung, Kim, Jeong-Sook, Kobayashi, Hideyuki, Li, Bin, Li, Guanghui, Li, Xiaofei, Liu, Zhiyong, Liu, Qinghui, Liu, Xiang, Oh, Chung-Sik, Oyama, Tomoaki, Roh, Duk-Gyoo, Wang, Jinqing, Wang, Na, Wang, Shiqiang, Xia, Bo, Yan, Hao, Yeom, Jae-Hwan, Yonekura, Yoshinori, Yuan, Jianping, Zhang, Hua, Zhao, Rongbing, Zhong, Weiye

Publikováno v: 2023, Nature, 621, 711-715

The nearby radio galaxy M87 offers a unique opportunity to explore the connections between the central supermassive black hole and relativistic jets. Previous studies of the inner region of M87 revealed a wide opening angle for the jet originating ne

Externí odkaz: http://arxiv.org/abs/2310.09015

Strange Quasar Candidates with Abnormal Astrometric Characteristics from Gaia EDR3 and SDSS (SQUAB-II): Optical Identifications

Autor: Ji, Xiang, Zheng, Zhen-Ya, Wu, Qiqi, Lin, Ruqiu, Rahna, P. T., Zhang, Yingkang, Zhu, Shuairu, Liao, Shilong, Qi, Zhaoxiang, An, Tao

There are some strange quasars with multiple Gaia detections or observed with abnormal astrometric characteristics, such as with large proper motions or significant astrometric noises. Those strange quasars could be potential candidates of quasar-sta

Externí odkaz: http://arxiv.org/abs/2306.08376

Mildly Relativistic Motion in the Radio Quiet Quasar PG 1351+640

Autor: Wang, Ailing, An, Tao, Guo, Shaoguang, Ho, Luis C., Baan, Willem A., Braun, Robert, Chen, Sina, Cheng, Xiaopeng, Hartley, Philippa, Yang, Jun, Zhang, Yingkang

Measuring the proper motion of the emission component in radio-quiet quasars (RQQs) could help to distinguish between the origins of the radio emission and to understand whether the jet production mechanism is the same in radio-loud quasars (RLQs) an

Externí odkaz: http://arxiv.org/abs/2305.03470

J2102+6015: a potential distant multimessenger?

Autor: Gurvits, Leonid I., Frey, Sándor, Krezinger, Máté, Titov, Oleg, An, Tao, Zhang, Yingkang, Polnarev, Alexander G., Gabányi, Krisztina É., Perger, Krisztina, Melnikov, Alexey

We present and briefly discuss results of several studies of the source J2102+6015 with tentatively defined redshift z=4:575 which demonstrates unusual properties in imaging and astrometric VLBI observations. Its properties might be considered as ind

Externí odkaz: http://arxiv.org/abs/2301.12283