| Summary table |
|---|
| Variable |
Value |
Source |
| T0 |
13:32:23 UTC |
GCN_circulars,INTEGRAL |
| ra |
260.1958° |
IPN |
| decl |
-12.6667° |
IPN |
| pos_error |
3.33e-02° |
IPN |
| GBM_located |
False |
|
| mjd |
59253.564155092594 |
GCN_circulars,INTEGRAL |
| IPN table |
|---|
| GRB_name |
GRB210208A |
| ra |
260.1958° |
| decl |
-12.6667° |
| pos_error |
3.33e-02° |
| GCN 29429 table |
|---|
| GRB_name |
GRB210208A |
| GCN_number |
29429 |
| Detection_method |
INTEGRAL |
| t_trigger |
13:32:23 UTC |
| ra |
260.1976° |
| decl |
-12.6667° |
| Circular_text |
TITLE: GCN CIRCULAR
NUMBER: 29429
SUBJECT: GRB 210208A: A long GRB detected by INTEGRAL
DATE: 21/02/08 14:22:35 GMT
FROM: Sandro Mereghetti at IASF-Milano/INAF
S.Mereghetti (INAF, IASF-Milano), D.Gotz (CEA, Saclay), C.Ferrigno,
E.Bozzo, V.Savchenko (ISDC, Versoix), L.Ducci (IAAT, Germany and ISDC,
Versoix)
and J.Borkowski (CAMK, Torun) report:
A gamma ray burst lasting about 3 s has been detected by IBAS in the
IBIS/ISGRI data at 13:32:23 UT of February 8, 2021.
The refined coordinates (J2000) are:
R.A.= 260.1976 deg
DEC.= -12.6667 deg
with an uncertainty of 2 arcmin (90% c.l.).
The burst had a peak flux of about 0.9 counts/cm2/s (20-200 keV, 1-s
integration
time) and a fluence in the same energy range of about 2e-7 erg/cm2.
A plot of the light curve will be posted at
http://ibas.iasf-milano.inaf.it/IBAS_Results.html
|
| GCN 29439 table |
|---|
| GRB_name |
GRB210208A |
| GCN_number |
29439 |
| Detection_method |
Optical |
| Circular_text |
TITLE: GCN CIRCULAR
NUMBER: 29439
SUBJECT: GRB 210208A: BOOTES-2/TELMA optical upper limit
DATE: 21/02/09 14:56:47 GMT
FROM: Youdong HU at IAA-CSIC
Y.-D. Hu, E. Fernandez-Garcia, A. J. Castro-Tirado, M.D. Caballero-Garcia, M. A. Castro Tirado (IAA-CSIC), C. Perez del Pulgar, A. Castellon, I. Carrasco (Univ. de Malaga), R. Fernandez-Munoz (IHSM/UMA-CSIC) and M. Jelinek (ASU-CAS), on behalf of a larger collaboration, report:
Following the detection of GRB 210208A by INTEGRAL (Mereghetti et al. GCNC 29429), the 60 cm BOOTES-2/TELMA robotic telescope at IHSM La Mayora (UMA-CSIC) in Algarrobo Costa (Malaga, Spain) pointed to the position of the GRB, 17 deg away from the Galactic Center. No new source within the INTEGRAL/IBIS error box down to 17.3 mag is detected in the co-added image (2x60 s exposures, clear filter) obtained through a partially cloudy sky, at 06:17 UT on Feb 9 (~17.25 hr after trigger).
We thank the staff at La Mayora for their excellent support.
|
| GCN 29451 table |
|---|
| GRB_name |
GRB210208A |
| GCN_number |
29451 |
| Detection_method |
Optical |
| ra |
260.1976° |
| decl |
-12.6667° |
| Circular_text |
TITLE: GCN CIRCULAR
NUMBER: 29451
SUBJECT: GRB 210208A: GIT optical upper limit
DATE: 21/02/10 11:38:40 GMT
FROM: Harsh Kumar at Indian Inst of Tech,Bombay
H. Kumar(IITB), S. Joharle(Fergusson College), J. Stanzin (IAO), V.
Bhalerao(IITB), G. C. Anupama(IIA), S. Barway(IIA) report on behalf of the
GIT team:
We observed GRB 210208A detected by INTEGRAL (S. Mereghetti et. al., GCN
#29429) with 0.7m GROWTH-India Telescope (GIT). We obtained four exposures
of 300-sec each in the r' filter. We did not detect any new source in our
stacked image within the 2 arcmin circle around R.A.= 260.1976 deg, DEC.=
-12.6667 deg. The obtained upper limit follows as:
-----------------------------------------------------------------
JD (mid) | T_mid-T0(hrs) | Exposure | Filter | Lim_mag (5-sigma) |
-----------------------------------------------------------------
2459254.51368 | 10.78 | 300*4 (stacked) | r' | > 21.1 |
-----------------------------------------------------------------
The magnitudes are calibrated against PanSTARRS (Flewelling et al., 2018)
and not corrected for galactic extinction.
The GROWTH India Telescope (GIT) is a 70-cm telescope with a 0.7-degree
field of view, set up by the Indian Institute of Astrophysics and the
Indian Institute of Technology Bombay with support from the Indo-US Science
and Technology Forum (IUSSTF) and the Science and Engineering Research
Board (SERB) of the Department of Science and Technology (DST), Government
of India (https://sites.google.com/view/growthindia/). It is located at the
Indian Astronomical Observatory (Hanle), operated by the Indian Institute
of Astrophysics (IIA).
|
| GCN 29518 table |
|---|
| GRB_name |
GRB210208A |
| GCN_number |
29518 |
| Detection_method |
Optical |
| Circular_text |
TITLE: GCN CIRCULAR
NUMBER: 29518
SUBJECT: GRB 210208A: 1.3m DFOT Optical upper limit
DATE: 21/02/17 19:26:19 GMT
FROM: Rahul Gupta at ARIES, India
Rahul Gupta, A. Kumar, Dimple, A. Ghosh, A. Aryan, B. Kumar, S. B.
Pandey, and K. Misra (ARIES) report:
We observed the field of INTEGRAL detected GRB 210208A (Mereghetti et
al., GCN 29429) with 1.3m Devasthal Fast Optical Telescope (DFOT)
located at Devasthal observatory of Aryabhatta Research Institute of
Observational Sciences (ARIES), India. The observations were started
on 2021-02-13 at 22:43:42 UT i.e. ~ 5.4 days after the INTEGRAL
trigger. We have taken multiple frames having an exposure time of 180
s in the R filter. We did not detect any optical afterglow candidate
in our single or stacked image within the INTEGRAL uncertainty circle
(Mereghetti et al., GCN 29429). Our non-detection is consistent with
Hu et al., GCN 29439 and Kumar et al., GCN 29451.
We obtain the following 3-sigma upper limit in the stacked image.
Date Start_UT T_start-T0 (days) Filter Exp time (s) Limiting Magnitude
======================================================
2021-02-13 22:43:42 ~5.4 R 180*10 > 22.0
The magnitude is not corrected for the Galactic extinction in the
direction of the burst. Photometric calibration is performed using the
standard stars from the USNO-B1.0 catalogue.
This circular may be cited.
|