Extreme phenomena in the universe are often triggered by the strong gravitational field of black holes (BHs) and surrounding relativistic plasma’s activities. Recent ultra-high spatial resolution observations with VLBI provide new clues to a better understanding of what happens around the BHs.
Hot topics to be presented and discussed in the workshop will be as follows: (1) As for Sgr A*, there has been a breakthrough in picturing Sgr A* BH shadow and surrounding photon ring with the Event Horizon Telescope. On the other hand, detailed explorations of the newly arising questions of "time variability" and "presence/absence of an outflow" of Sgr A* are just beginning. (2) Regarding M87, both observationally and theoretically, there is a growing movement toward understanding the whole picture of the M87 jet by bridging the spatial gap between the BH-shadow and the downstream jet. In this process, much attention is paid to "nonthermal electrons” and "polarization." (3) Multimessenger astronomy is more and more important in BH research. Recent low-frequency radio observations dramatically change the pictures of compact radio transients such as neutron stars and FRB as well as AGN jet lobes in galaxy clusters, both of which will be major targets for future SKA/ngVLA. (4) Unique developments and experiments for radio telescopes both at high-frequency and low-frequency are underway in the East Asia region.
The purpose of the workshop is to have an opportunity for intensive overviews of new advances in BH astrophysics using VLBI and other state-of-the-art instruments, discuss various perspectives, and inspire the next research ideas of each participant. This workshop is a continuation of a series of workshops organized by East Asian VLBI community and one of the features of this year’s one is to find a link between low-frequency and high-frequency science.
(Univ of Toronto)
Sgr A* theory, GRMHD
(Kyoto Univ)
GRRT, Polarized emissions
(Harvard BHI)
EHT Sgr A*, ngEHT
(SHAO)
M87 observations at 3mm
(KASI)
EAVN, VLBA, M87 polarimetric observations
(Wurzburg Univ)
M87 theory, GRMHD, nonthermal emissions
(NAOJ)
ALMA, AGN winds, nonthermal emissions
(Yamaguchi Univ)
EAVN, JVN, High energy blazars
(Kyoto Univ/RIKEN)
pulsars, magnetars, and FRBs
(NAOJ)
AGN radio lobes and galaxy clusters
(SHAO)
VLBI with FAST
(KASI)
KVN at 230GHz
(ASIAA)
FRB and BURSTT Project
(KASI)
EAVN future plans
(JAXA)
Low frequency VLBI towards FRB detection
Dec 2nd :Registration open. Please register here.
Jan 7th :Deadline for abstract submission (contributed talks and posters)
:Deadline for on-site participation
Jan 27th:Deadline for abstract submission (posters)
:Deadline for zoom participation
2023/1/28 updated
Please refer to this page for access information.
Please refer to this page for accommodation information.
Motoki Kino (Kogakuin Univ/NAOJ, chair), Tomohisa Kawashima (Univ. of Tokyo ICRR, Co-Chair), Kazuhiro Hada (NAOJ), and Takuya Akahori (NAOJ/SKAO)
Takuya Akahori (NAOJ/SKAO, chair), Elika Prameswari Fariyanto (Univ. of Tokyo/NAOJ), Marie Katsukawa (NAOJ), Akiyo Komori (NAOJ), Kohei Kurahara (NAOJ), Aika Oki (Univ. of Tokyo/NAOJ), and Hiroki Okino (Univ. of Tokyo/NAOJ)