GRB 190330A
GCN Circular 24035
Subject
GRB 190330A: Insight-HXMT/HE detection
Date
2019-04-01T13:49:33Z (6 years ago)
From
Qi Luo at IHEP <luoqi@ihep.ac.cn>
Q. Luo, C. K. Li, X. B. Li, G. Li, J. Y. Liao, S. L. Xiong,
C. Z. Liu, X. F. Li, Z. W. Li, Z. Chang, X. F. Lu,
A. M. Zhang, Y. F. Zhang, C. L. Zou (IHEP), Y. J. Jin,
Z. Zhang (THU), T. P. Li (IHEP/THU), F. J. Lu, L. M. Song,
M. Wu, Y. P. Xu, S. N. Zhang (IHEP),
report on behalf of the Insight-HXMT team:
At 2019-03-30T16:39:32.000 (T0), the Insight-HXMT/HE detected
GRB 190330A(trigger ID: HEB190330694) in a routine search of the data,
which was also triggered by Fermi/GBM(B. Biltzinger et al. ,GCN 24026).
The Insight-HXMT/HE light curve mainly consists of one
pulse with a duration (T90) of 9.28 s measured from T0-0.81 s.
The 1-ms peak rate, measured from T0+0.205 s, is 1338 cnts/sec.
The total counts from this burst is 3183 counts.
URL_LC: http://www.hxmt.org/images/GRB/HEB190330694_lc.jpg
All measurements above are made with the CsI detectors operating in the
regular mode with the energy range of about 80-800 keV (record energy).
Only gamma-rays with energy greater than about 200 keV can penetrate
the spacecraft and leave signals in the CsI detectors installed inside
of the telescope.
Insight-HXMT is the first Chinese space X-ray telescope, which was
fundedjointly by the China National Space Administration (CNSA) and
the Chinese Academy of Sciences (CAS).
More information about it could be found at:
http://www.hxmt.org.
GCN Circular 24047
Subject
GRB 190330A: MITSuME Akeno and Okayama optical upper limits
Date
2019-04-04T13:51:36Z (6 years ago)
From
Adachi Ryo at Tokyo Institute of Tech <adachi@hp.phys.titech.ac.jp>
R. Adachi, M. Niwano, K. Iida, K. L. Murata, M. Oeda,
K. Shiraishi, Y. Yatsu, and N. Kawai (Tokyo Tech)
report on behalf of the MITSuME collaboration:
We performed tiling observation for the error region of GRB 190330A
(B. Biltzinger et al., GCN Circular #24026)
with an optical tri-color (g', Rc, and Ic) camera attached to
the MITSuME 50cm telescopes at Akeno Observatory
and Okayama Astrophysical Observatory, in Japan.
The follow up observation started at 2019-03-31 10:14:29 UT, 63,297
sec after the trigger.
Our tiling observation covered almost 100% of the Fermi-GBM Ground
Position error circle
(GCN Notices Trigger num.=575656777, record num.=58).
Compared our co-added images with GSC2.3 catalog,
we found no bright optical transient in the observed region.
Because the elevation of the target field had dropped from 50 deg to 10 deg
during the observations and the sky condition was unstable,
the obtained upper limits are different for each field.
The 5-sigma upper limits of the co-added images are listed below.
Field num. center position(R.A., Dec.) size of field(R.A.(arcmin)
x Dec.(arcmin)) 5-sigma upper limit start observation time(UT)
-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Field 0 6:03:09, +16:37:06 25.5 x 25.7 g' > 18.4, Rc > 18.2, Ic
> 17.4 10:14:29 31 March
Field 1 6:04:43, +16:36:23 25.4 x 25.7 g' > 18.6, Rc > 18.2, Ic
> 17.4 11:16:01 31 March
Field 2 6:03:13, +17:01:38 23.4 x 23.6 g' > 17.2, Rc > 16.7, Ic
> 16.4 10:58:11 31 March
Field 3 6:04:46, +17:00:37 25.5 x 25.8 g' > 18.8, Rc > 18.4, Ic
> 17.4 10:55:30 31 March
Field 4 6:03:12, +16:13:33 23.6 x 23.8 g' > 17.2, Rc > 16.8, Ic
> 16.2 10:37:03 31 March
Field 5 6:01:26, +16:36:42 25.7 x 25.8 g' > 18.1, Rc > 16.7, Ic
> 16.3 10:35:00 31 March
Field 6 6:04:51, +16:13:42 23.6 x 23.8 g' > 16.9, Rc > 16.5, Ic
> 16.7 12:01:41 31 March
Field 7 6:01:23, +17:01:33 24.1 x 24.6 g' > 17.6, Rc > 17.2, Ic
> 16.3 11:57:02 31 March
Field 8 6:06:33, +16:37:22 23.3 x 23.7 g' > 17.0, Rc > 16.4, Ic
> 16.1 11:40:32 31 March
Field 9 6:03:01, +17:24:00 25.3 x 25.8 g' > 18.4, Rc > 17.9, Ic
> 17.0 11:36:32 31 March
Field 10 6:01:30, +16:13:18 22.6 x 23.8 g' > 17.1, Rc > 16.7, Ic
> 16.8 11:19:19 31 March
Field 11 6:06:19, +17:01:13 21.8 x 23.6 g' > 18.1, Rc > 17.8, Ic
> 16.8 12:58:58 31 March
Field 12 6:04:53, +17:25:24 23.6 x 23.6 g' > 16.9, Rc > 16.1, Ic
> 16.6 12:44:02 31 March
Field 13 6:06:19, +16:13:18 22.9 x 23.9 g' > 18.1, Rc > 17.5, Ic
> 16.8 12:38:20 31 March
Field 14 6:01:30, +17:25:24 22.9 x 23.7 g' > 17.0, Rc > 16.3, Ic
> 16.8 12:22:51 31 March
Field 15 6:02:59, +15:49:25 23.8 x 24.4 g' > 17.5, Rc > 17.0, Ic
> 16.5 12:17:41 31 March
Field 16 5:59:51, +16:37:12 23.2 x 24.1 g' > 15.5, Rc > 15.5, Ic
> 15.6 13:47:37 31 March
Field 17 6:04:32, +15:48:43 19.7 x 23.0 g' > 16.7, Rc > 16.7, Ic
> 16.1 13:40:16 31 March
Field 18 5:59:51, +16:37:12 23.2 x 23.7 g' > 16.1, Rc > 15.9, Ic
> 16.2 13:26:25 31 March
Field 19 6:06:18, +17:25:00 21.2 x 23.4 g' > 17.5, Rc > 16.9, Ic
> 16.1 13:19:37 31 March
Field 20 6:01:30, +15:49:24 23.2 x 23.7 g' > 16.4, Rc > 16.1, Ic
> 16.4 13:05:12 31 March
Field 21 5:59:52, +16:13:44 23.4 x 23.8 g' > 16.6, Rc > 16.4, Ic
> 16.6 10:24:38 1 April
Field 22 6:08:11, +16:37:38 23.6 x 23.7 g' > 16.6, Rc > 16.5, Ic
> 16.8 10:45:45 1 April
Field 23 6:03:13, +17:49:19 23.5 x 23.7 g' > 15.5, Rc > 15.2, Ic
> 15.2 14:08:53 31 March
Field 24 6:08:14, +17:01:33 23.3 x 23.7 g' > 16.6, Rc > 16.5, Ic
> 16.7 11:06:53 1 April
Field 25 6:04:33, +17:48:39 19.1 x 22.7 g' > 17.0, Rc > 17.0, Ic
> 16.4 13:51:43 31 March
-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
We used GSC2.3 and UCAC4 catalog for flux calibration.