Zobrazeno 1 - 10
of 43
pro vyhledávání: '"Fengchun, Shu"'
Autor:
Weston, S., de Witt, A., Krasna, Hana, Bail, Karine Le, Hardon, Sara, Gordon, David, Fengchun, Shu, Fey, Alan, Schartner, Matthias, Basu, Sayan, Titov, Oleg, Behrend, Dirk, Jacobs, Christopher S., Hankey, Warren, Salguero, Febreico, Reynolds, John E.
The International VLBI Service for Geodesy & Astrometry (IVS) regularly provides high-quality data to produce Earth Orientation Parameters (EOP), and for the maintenance and realization of the International Terrestrial and Celestial Reference Frames,
Externí odkaz:
http://arxiv.org/abs/2306.06830
Autor:
Shuangjing Xu, Taehyun Jung, Bo Zhang, Ming Hui Xu, Do-Young Byun, Xuan He, Nobuyuki Sakai, Oleg Titov, Fengchun Shu, Hyo-Ryoung Kim, Jungho Cho, Sung-Moon Yoo, Byung-Kyu Choi, Woo Kyoung Lee, Yan Sun, Xiaofeng Mai, Guangli Wang
Publikováno v:
The Astronomical Journal, Vol 168, Iss 5, p 219 (2024)
Extending geodetic and astrometric Very Long Baseline Interferometry (VLBI) observations from traditional centimeter wavebands to millimeter wavebands offers numerous scientific potentials and benefits. However, it was considered quite challenging du
Externí odkaz:
https://doaj.org/article/497d7b789b4848649ae3e39a6ea9864a
Autor:
Oleg Titov, Sándor Frey, Alexey Melnikov, Fengchun Shu, Bo Xia, Javier González, Belén Tercero, Leonid Gurvits, Aletha de Witt, Jamie McCallum, Mikhail Kharinov, Vladimir Zimovsky, Máté Krezinger
Publikováno v:
The Astronomical Journal, Vol 165, Iss 2, p 69 (2023)
Radio-loud quasars at high redshift ( z ≥ 4) are rare objects in the universe and rarely observed with Very Long Baseline Interferometry (VLBI). But some of them have flux density sufficiently high for monitoring of their apparent position. The ins
Externí odkaz:
https://doaj.org/article/5348dcfb94b84b5f87b69501d582e2b1
Autor:
Pengfei Jiang, Lang Cui, Jun Yang, Bo Zhang, Shuangjing Xu, Fengchun Shu, Wu Jiang, Wen Chen, Guanghui Li, Bo Xia, Stuart Weston, Sergei Gulyaev, Hongmin Cao, Xiang Liu, Tao An
Publikováno v:
Monthly Notices of the Royal Astronomical Society (0035-8711) vol.520(2023)
AR Scorpii (AR Sco), the only-known radio-pulsing white dwarf binary, shows unusual pulsating emission at the radio, infrared, optical and ultraviolet bands. To determine its astrometric parameters at the radio band independently, we conducted multi-
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6cc5dd33c904828768fe9ec5063fdf06
https://doi.org/10.1093/mnras/stad327
https://doi.org/10.1093/mnras/stad327
Autor:
Wen Chen, Bo Zhang, Jingdong Zhang, Jun Yang, Shuangjing Xu, Yan Sun, Xiaofeng Mai, Fengchun Shu, Min Wang
Publikováno v:
Monthly Notices of the Royal Astronomical Society.
To accurately link the radio and optical Celestial Reference Frames (CRFs) at optical bright end, i.e., with Gaia G band magnitude < 13, increasing number and improving sky distribution of radio stars with accurate astrometric parameters from both Ve
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::614c0bd12f73ab2a5cbf2c25363290bd
https://doi.org/10.1093/mnras/stad1214
https://doi.org/10.1093/mnras/stad1214
Autor:
Sandor Frey, Tao An, Krisztina É. Gabányi, Leonid Gurvits, Mate Krezinger, Alexey Melnikov, Prashanth Mohan, Zsolt Paragi, Krisztina Perger, Fengchun Shu, Oleg Titov, Pablo de Vicente, Yingkang Zhang
The powerful high-redshift quasar J2102+6015 (at z=4.575) may provide useful information for studying supermassive black hole growth, galaxy evolution and feedback in the early Universe. The source has so far been imaged with very long baseline inter
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3968d30be8af6c5559b8bb7c8d7e2877
Autor:
Jing Sun, Jinsong Ping, Yuri Bondarenko, Dmitry Marshalov, Fengchun Shu, Jianfeng Cao, Songtao Han, Lue Chen, Wen Chen
Publikováno v:
Sensors, Vol 20, Iss 7, p 1874 (2020)
Earth-based radar astronomical observations provide information on surface characteristics, orbits, and rotations for a wide variety of solar system objects. Based on compound radio telescopes, both the Chinese VLBI (Very Long Baseline Interferometry
Externí odkaz:
https://doaj.org/article/06f24f6b1efe44158a66b7676419a698
Autor:
Tao An, Sándor Frey, Alexey A. Melnikov, Pablo de Vicente, Oleg Titov, Yingkang Zhang, Ailing Wang, Xiaolong Yang, Fengchun Shu, Máté Krezinger
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 507:3736-3744
Jets of high-redshift active galactic nuclei (AGNs) can be used to directly probe the activity of the black holes in the early Universe. Radio sources with jets misaligned with respect to the line of sight are expected to dominate the high-redshift A
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3968eda994cd257440742d8ad8578a45
https://doi.org/10.1093/mnras/stab2289
https://doi.org/10.1093/mnras/stab2289
Autor:
Susanne Lunz, Anderson, James M., Ming Hui Xu, Robert Heinkelmann, Oleg Titov, Jean François Lestrade, Johnson, Megan C., Fengchun Shu, Wen Chen, Alexey Melnikov, Jamie McCallum, Yulia Lopez, Andrei Mikhailov, Pablo de Vicente Abad, Harald Schuh
Publikováno v:
Aalto University
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::92ee89095d9b2fc0d8895a586507d833
https://doi.org/10.22323/1.399.0032
https://doi.org/10.22323/1.399.0032
Autor:
Oleg Titov, Sándor Frey, Alexey Melnikov, Sébastien Lambert, Fengchun Shu, Bo Xia, Javier González, Belén Tercero, Sergey Gulayev, Stuart Weston, Tim Natusch
Astrometric positions of radio-emitting active galactic nuclei (AGNs) can be determined with sub-milliarcsec accuracy using very long baseline interferometry (VLBI). The usually small apparent proper motion of distant extragalactic targets allow us t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5b0631ee009635040cd81c1ba9c89daa