[vsnet-grb-info 22667] GRB 190114C: East Asia VLBI Network observations

[GCN Circulars]

TITLE:   GCN CIRCULAR
NUMBER:  24766
SUBJECT: GRB 190114C: East Asia VLBI Network observations
DATE:    19/06/06 20:51:25 GMT
FROM:    Marcello Giroletti at INAF Euro VLBI  <marcello.giroletti at inaf.it>

M. Giroletti, M. Orienti (INAF-IRA), G. Ghirlanda, G. Ghisellini,
L. Nava, M. Ravasio, O. Salafia (INAF-OABrera), T. An (SHAO),
K. Hada (NAOJ), B. W. Sohn (KASI), G. Giovannini (Univ. Bologna),
Y. Zhang (UCAS)

We observed GRB 190114C (Gropp et al., GCN 23688) within the DDT project
a19mg01 using the East Asia VLBI Network (EAVN) at 22 GHz on three
epochs: 7, 16, and 33 days after the burst, respectively.  We report in
the table below the observing dates and times, with the resulting
3-sigma upper limits on the source flux density (assuming the source is
unresolved at the few milliarcsecond angular resolution of the instrument):

Date         Time (UT)     3-sigma u.l. (mJy)
2019-01-21   08:30-14:30   2.8
2019-01-30   08:00-14:00   1.8
2019-02-16   08:00-14:05   0.84

We acknowledge the EAVN Directors, the scheduler, and the staff at
the stations and at the KJCC for approving, executing, and correlating
these observations.