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Kinematics of the M87 Jet in the Collimation Zone: Gradual Acceleration and Velocity Stratification

We study the kinematics of the M87 jet using the first-year data of the KVN and VERA Array (KaVA) large program, which has densely monitored the jet at 22 and 43 GHz since 2016. We find that the apparent jet speeds generally increase from ≈0.3c at ≈0.5 mas from the jet base to ≈2.7c at ≈20 mas, indi...

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Bibliographic Details
Main Authors: Park, Jongho, Hada, Kazuhiro, Kino, Motoki, Nakamura, Masanori, Hodgson, Jeffrey, Ro, Hyunwook, Cui, Yuzhu, Asada, Keiichi, Algaba, Juan Carlos, Sawada-Satoh, Satoko, Lee, Sang-Sung, Cho, Ilje, Shen, Zhiqiang, Jiang, Wu, Trippe, Sascha, Niinuma, Kotaro, Sohn, Bong Won, Jung, Taehyun, Zhao, Guang-Yao, Wajima, Kiyoaki, Tazaki, Fumie, Honma, Mareki, An, Tao, Akiyama, Kazunori, Byun, Do-Young, Kim, Jongsoo, Zhang, Yingkang, Cheng, Xiaopeng, Kobayashi, Hideyuki, Shibata, Katsunori M., Lee, Jee Won, Roh, Duk-Gyoo, Oh, Se-Jin, Yeom, Jae-Hwan, Jung, Dong-Kyu, Oh, Chungsik, Kim, Hyo-Ryoung, Hwang, Ju-Yeon, Hagiwara, Yoshiaki
Format: Article
Published: IOP Publishing 2019
Subjects:
Q Science (General)
QB Astronomy
QC Physics
Online Access:http://eprints.um.edu.my/23763/
https://doi.org/10.3847/1538-4357/ab5584
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