Gamma-ray Burst 161214A

(All information courtesy of the instrument teams.)

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Results of Observations

GCN/BACODINE POSITION NOTICE

TITLE:          GCN/INTEGRAL NOTICE
NOTICE_DATE:    Wed 14 Dec 16 04:46:26 UT
NOTICE_TYPE:    INTEGRAL Wakeup
TRIGGER_NUM:    7644,   Sub_Num: 1
GRB_RA:         190.7296d {+12h 42m 55s} (J2000),
                190.9447d {+12h 43m 47s} (current),
                190.0953d {+12h 40m 23s} (1950)
GRB_DEC:         +6.8270d {+06d 49' 37"} (J2000),
                 +6.7343d {+06d 44' 03"} (current),
                 +7.1008d {+07d 06' 03"} (1950)
GRB_ERROR:      3.18 [arcmin, radius, statistical only]
GRB_INTEN:      8.79 [sigma]
GRB_TIME:       17175.97 SOD {04:46:15.97} UT
GRB_DATE:       17736 TJD;   349 DOY;   16/12/14
SC_RA:          189.05 [deg] (J2000)
SC_DEC:          14.71 [deg] (J2000)
SUN_POSTN:      261.97d {+17h 27m 54s}  -23.23d {-23d 13' 52"}
SUN_DIST:        75.50 [deg]   Sun_angle= 4.7 [hr] (West of Sun)
MOON_POSTN:      85.08d {+05h 40m 19s}  +18.65d {+18d 39' 07"}
MOON_DIST:      102.69 [deg]
GAL_COORDS:     296.86, 69.60 [deg] galactic lon,lat of the burst
ECL_COORDS:     187.15, 10.52 [deg] ecliptic lon,lat of the burst
COMMENTS:       INTEGRAL GRB Coordinates.  
COMMENTS:       Time_Scale=10.0000 and Time_Error=10.0000.  
COMMENTS:       Possibly real GRB event

red DSS finding chart ps-file

GCN NOTICE

TITLE:          GCN/INTEGRAL NOTICE
NOTICE_DATE:    Wed 14 Dec 16 05:44:30 UT
NOTICE_TYPE:    INTEGRAL Offline
TRIGGER_NUM:    7644,   Sub_Num: 2
GRB_RA:         190.7566d {+12h 43m 02s} (J2000),
                190.9717d {+12h 43m 53s} (current),
                190.1223d {+12h 40m 29s} (1950)
GRB_DEC:         +6.8531d {+06d 51' 11"} (J2000),
                 +6.7604d {+06d 45' 37"} (current),
                 +7.1269d {+07d 07' 37"} (1950)
GRB_ERROR:      2.50 [arcmin, radius, statistical only]
GRB_INTEN:      8.79 [sigma]
GRB_TIME:       17175.97 SOD {04:46:15.97} UT
GRB_DATE:       17736 TJD;   349 DOY;   16/12/14
SC_RA:          189.05 [deg] (J2000)
SC_DEC:          14.71 [deg] (J2000)
SUN_POSTN:      262.02d {+17h 28m 04s}  -23.23d {-23d 14' 00"}
SUN_DIST:        75.52 [deg]   Sun_angle= 4.7 [hr] (West of Sun)
MOON_POSTN:      85.72d {+05h 42m 52s}  +18.69d {+18d 41' 18"}
MOON_DIST:      102.11 [deg]
GAL_COORDS:     296.93, 69.63 [deg] galactic lon,lat of the burst
ECL_COORDS:     187.16, 10.56 [deg] ecliptic lon,lat of the burst
COMMENTS:       INTEGRAL GRB Coordinates.  
COMMENTS:       Time_Scale=10.0000 and Time_Error=10.0000.  
COMMENTS:       refined_coordinates_after_offline_analysis

GCN Circular #20251
S.Mereghetti (IASF-Milano), D.Gotz (CEA, Saclay), C.Ferrigno, E.Bozzo, J.G.Victor (ISDC, Versoix), and J.Borkowski (CAMK, Torun) on behalf of the IBAS Localization Team report:
a long gamma ray burst has been detected by IBAS in the IBIS/ISGRI data at 4:46:07 UT of 2016 December 12
The refined coordinates (J2000) are:
```
R.A.= 190.757 deg
DEC.=  6.853 deg
```
with an uncertainty of 2.5 arcmin (90% c.l.).
The burst had an initial peak lasting about 7 s with peak flux of about 0.3 counts/cm2/s (20-200 keV, 1-s integration time) and fluence of 1.5e-7 erg/cmq, followed by fainter emission lasting about one minute.
The relatively low significance of the trigger was due to the fact that one of the eight modules composing the ISGRI detector was temporarily off during the burst.
A plot of the light curve will be posted at http://ibas.iasf-milano.inaf.it/IBAS_Results.html
GCN Circular #20252
C. Guidorzi (U. Ferrara), C.G. Mundell (Bath), S. Kobayashi, I.A. Steele (LJMU), A. Gomboc (U. Nova Gorica) on behalf of a large collaboration report:
The 2-m Liverpool Telescope automatically began observing INTEGRAL GRB 161214A (Mereghetti et al., GCN 20251) in the SDSS r. Within the INTEGRAL error circle we find an uncatalogued fading object at the following position:
```
RA(J2000)=  12:43:00.36
Dec(J2000)= +06:51:50.1
```
with a 1 arcsec error radius and magnitudes of r=19.66 +- 0.07 at 35 minutes, and r=19.95 +- 0.07 at 61 minutes post GRB trigger as calibrated against nearby SDSS stars.
GCN Circular #20254
Klotz A., Turpin D., Atteia J.L. (CNRS-OMP-IRAP), Boer, M., Laugier, R. (CNRS-ARTEMIS), Gendre B. (UVI - Etelman Obs.) report:
We imaged the field of GRB 161214A detected by INTEGRAL (trigger 7644) with the TAROT robotic telescope (D=25cm) located at the Calern observatory, France.
The observations started 24.6s after the GRB trigger (17.7s after the notice). The elevation of the field increased from 45 degrees above horizon and weather conditions were good until the end of the night.
The first image is trailed with a duration of 60.0s (see the description in Klotz et al., 2006, A&A 451, L39).
We detected the couterpart mentioned by Guidorzi et al. (GCNC 20252). The optical afterglow reached flux peak at t0+240s (+/- 15s). The early light curve:
```
t0 +  25 s to t0 +   85s  : Rlim = 16.6 (trailed image)
t0 +  99 s to t0 +  211s  : Rlim = 17.1
t0 + 222 s to t0 +  293s  : R    = 16.9 +/- 0.3
t0 + 304 s to t0 +  899s  : R    = 17.4 +/- 0.3
t0 + 910 s to t0 + 2180s  : R    = 18.7 +/- 0.4
```
Magnitudes were estimated with the nearby star NOMAD-1 0968-0244492 ra=190.7246097 dec=+06.8741839 R=15.04.
Magnitudes were estimated with the nearby USNO-B1 stars and are not corrected for galactic dust extinction.
N.B. Galactic coordinates are lon=296.86 lat=+69.60 and the galactic extinction in R band is about 0.1 magnitudes estimated from D. Schlegel et al. 1998ApJ...500..525S.
GCN Circular #20255
T. Kruehler and J. Greiner (both MPE Garching) report on behalf of the GROND team:
We observed the field of GRB 161214A (INTEGRAL trigger 7644; Mereghetti et al., GCN #20251) simultaneously in g'r'i'z'JHK with GROND (Greiner et al. 2008, PASP 120, 405) mounted at the 2.2m MPG telescope at the ESO La Silla Observatory (Chile).
Observations started at 08:39 UT on 2016-12-14, 3.9 hr after the GRB trigger. They were performed at an average seeing of 1".3, and at an average airmass of 1.8.
Based on combined images with 9.7 min of total exposures in g'r'i'z' and 10.0 min in JHK at a mid-time of 08:45 UT on 2016-12-14, we derive the following preliminary magnitudes (all in AB system) for the optical/NIR afterglow (Guidorzi et al., GCN 20252).
```
g' = 21.7 +- 0.2 mag
r' = 21.0 +- 0.1 mag
i' = 20.6 +- 0.1 mag
z' = 20.4 +- 0.1 mag
J = 20.2 +- 0.2 mag
H = 20.2 +- 0.3 mag
```
Given magnitudes are calibrated against SDSS/2MASS field stars and are not corrected for the expected Galactic foreground extinction corresponding to a reddening of E_(B-V) = 0.02 mag in the direction of the burst (Schlafly & Finkbeiner 2011).
GCN Circular #20258
D. Malesani (DARK/NBI and DTU Space), D. Xu (NAOC/CAS), J. Telting (NOT), E. Gafton, report on behalf of a larger collaboration:
We observed the field of the INTEGRAL GRB 161214A (Mereghetti et al., GCN 20251) with the Nordic Optical Telescope (NOT) equipped with the AlFOSC imaging camera. Observations were carried out at the very end of the night, starting about 40 min after the morning twilight, and only a single 200 s exposure taken with the SDSS r filter was useful.
The optical afterglow (Guidorzi et al., GCN 20252; Klotz et al., GCN 20254; Kruehler & Greiner, GCN 20255) is faintly detected in our images. By comparison with nearby SDSS stars, we measure for the afterglow r = 20.9 +- 0.3 (AB) at a mean epoch 2016 Dec 14.303, that is 2.50 hr after the GRB.
GCN Circular #20343
D.Vlasenko, V. Lipunov, E.Gorbovskoy, N.Tyurina, V.Kornilov, O.Gress, P.Balanutsa, A.Kuznetsov, D.Kuvshinov Lomonosov Moscow State University, Sternberg Astronomical Institute
R. Rebolo, M. Serra Ricart, N. Lodieu, G. Israelian The Instituto de Astrofisica de Canarias
R.Podesta, C.Lopez, F.Podesta Observatorio Astronomico Felix Aguilar (OAFA), San Juan Univerdity,
H. Levato, C. Saffe Instituto de Ciencias Astronomicas, de la Tierra y del Espacio (ICATE)
D.Buckley, S. Potter, South African Astronomical Observatory
O.Gres, K.Ivanov, J.Rabinovich, N.M.Budnev, Irkutsk State University
A. Tlatov, V.Senik, D. Dormidontov, A.Parkhomenko Kislovodsk Solar Station of the Pulkovo Observatory
V.Yurkov, Yu.Sergienko, A.Gabovich Blagoveschensk Educational State University, Blagoveschensk
MASTER II robotic telescope (MASTER-Net: http://observ.pereplet.ru) located in IAC was pointed to the GRB161214A 17 sec after notice time and 27 sec after trigger time at 2016-12-14 04:46:43 UT. On our first (10s exposure) set we haven`t found optical transient within INTEGRAL error-box (ra=12 43 47 dec=+06 44 03 r=3.18) (Mereghetti et al., GCN 20251). The 5-sigma upper limit set is about 16.2 mag(polaroid, unfiltered).
The observations made on zenit distance = 36 degrees, galaxy latitude b = 69 degree. The moon (99 % bright part) is 40 degrees above the horizon. The distance between moon and object is 102.6 The sun altitude is -39 degree. The object can be observed till sunrise at 2016-12-14 07:46:48
Maximal coadded limit ~18.9 m. No OT found.
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Jochen Greiner, last update: 27-Dec-2016 [Disclaimer]