Gamma-ray Burst 140211A

(All information courtesy of the instrument teams.)

Previous IAU Circulars

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Results of Observations

GCN/BACODINE POSITION NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Tue 11 Feb 14 12:23:59 UT
NOTICE_TYPE:     Swift-BAT GRB Position
TRIGGER_NUM:     586289,   Seg_Num: 0
GRB_RA:          124.230d {+08h 16m 55s} (J2000),
                 124.435d {+08h 17m 44s} (current),
                 123.504d {+08h 14m 01s} (1950)
GRB_DEC:         +20.244d {+20d 14' 37"} (J2000),
                 +20.199d {+20d 11' 57"} (current),
                 +20.399d {+20d 23' 55"} (1950)
GRB_ERROR:       3.00 [arcmin radius, statistical only]
GRB_INTEN:       25847 [cnts]    Image_Peak=650 [image_cnts]
TRIGGER_DUR:     8.192 [sec] 
TRIGGER_INDEX:   453     E_range: 15-50 keV
BKG_INTEN:       178458 [cnts]
BKG_TIME:        44492.36 SOD {12:21:32.36} UT
BKG_DUR:         64 [sec]
GRB_DATE:        16699 TJD;    42 DOY;   14/02/11
GRB_TIME:        44583.82 SOD {12:23:03.82} UT
GRB_PHI:          20.01 [deg]
GRB_THETA:        24.72 [deg]
SOLN_STATUS:     0x3
RATE_SIGNIF:     13.22 [sigma]
IMAGE_SIGNIF:    10.26 [sigma]
MERIT_PARAMS:     +1  +0  +0  +3  +1  +0  -5  +0 +93  +0 
SUN_POSTN:       325.05d {+21h 40m 11s}  -13.95d {-13d 56' 53"}
SUN_DIST:        159.35 [deg]   Sun_angle= -10.6 [hr] (East of Sun)
MOON_POSTN:      105.37d {+07h 01m 29s}  +17.86d {+17d 51' 31"}
MOON_DIST:        18.16 [deg]
MOON_ILLUM:      89 [%]
GAL_COORDS:      203.06, 27.52 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:      121.86,  0.51 [deg] ecliptic lon,lat of the burst (or transient)
COMMENTS:        SWIFT-BAT GRB Coordinates.  
COMMENTS:        This is a rate trigger.  
COMMENTS:        A point_source was found.  
COMMENTS:        This does not match any source in the on-board catalog.  
COMMENTS:        This does not match any source in the ground catalog.  
COMMENTS:        This is a GRB.  
COMMENTS:        This trigger occurred at longitude,latitude = 222.39,-0.46 [deg].

red DSS finding chart ps-file

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Tue 11 Feb 14 12:27:02 UT
NOTICE_TYPE:     Swift-BAT GRB Lightcurve
TRIGGER_NUM:     586289,   Seg_Num: 0
GRB_RA:          124.230d {+08h 16m 55s} (J2000),
                 124.435d {+08h 17m 44s} (current),
                 123.504d {+08h 14m 01s} (1950)
GRB_DEC:         +20.244d {+20d 14' 37"} (J2000),
                 +20.199d {+20d 11' 57"} (current),
                 +20.399d {+20d 23' 55"} (1950)
GRB_DATE:        16699 TJD;    42 DOY;   14/02/11
GRB_TIME:        44583.82 SOD {12:23:03.82} UT
TRIGGER_INDEX:   453
GRB_PHI:          20.01 [deg]
GRB_THETA:        24.72 [deg]
DELTA_TIME:      -24.00 [sec]
TRIGGER_DUR:     8.192 [sec] 
SOLN_STATUS:     0x3
RATE_SIGNIF:     13.22 [sigma]
IMAGE_SIGNIF:    10.26 [sigma]
LC_URL:          sw00586289000msb.lc
SUN_POSTN:       325.05d {+21h 40m 11s}  -13.95d {-13d 56' 51"}
SUN_DIST:        159.35 [deg]   Sun_angle= -10.6 [hr] (East of Sun)
MOON_POSTN:      105.40d {+07h 01m 36s}  +17.86d {+17d 51' 19"}
MOON_DIST:        18.14 [deg]
MOON_ILLUM:      89 [%]
GAL_COORDS:      203.06, 27.52 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:      121.86,  0.51 [deg] ecliptic lon,lat of the burst (or transient)
COMMENTS:        SWIFT-BAT GRB Lightcurve.  
COMMENTS:           
COMMENTS:        The next comments were copied from the BAT_POS Notice:  
COMMENTS:        This is a rate trigger.  
COMMENTS:        A point_source was found.  
COMMENTS:        This does not match any source in the on-board catalog.  
COMMENTS:        This does not match any source in the ground catalog.  
COMMENTS:        This is a GRB.  
COMMENTS:        This trigger occurred at longitude,latitude = 222.39,-0.46 [deg].

GCN Circular #15816
J. R. Cummings (NASA/UMBC), M. M. Chester (PSU), V. D'Elia (ASDC), L. Izzo (URoma/ICRA), J. A. Kennea (PSU), H. A. Krimm (CRESST/GSFC/USRA), C. B. Markwardt (NASA/GSFC), K. L. Page (U Leicester) and R. L. C. Starling (U Leicester) report on behalf of the Swift Team:
At 12:23:03 UT, the Swift Burst Alert Telescope (BAT) triggered and located GRB 140211A (trigger=586289). Swift did not slew due to a Moon constraint. The BAT on-board calculated location is RA, Dec 124.230, +20.244 which is
```
   RA(J2000) = 08h 16m 55s
   Dec(J2000) = +20d 14' 37"
```
with an uncertainty of 3 arcmin (radius, 90% containment, including systematic uncertainty). The BAT light curve showed a broad structure with a duration of about 20 sec. The peak count rate was ~1200 counts/sec (15-350 keV), at ~1 sec after the trigger.
Due to a Moon observing constraint, Swift cannot slew to the BAT position until 20:04 UT on 2014 February 14. There will thus be no XRT or UVOT data for this trigger before this time.
Burst Advocate for this burst is J. R. Cummings (jayc AT milkyway.gsfc.nasa.gov). Please contact the BA by email if you require additional information regarding Swift followup of this burst. In extremely urgent cases, after trying the Burst Advocate, you can contact the Swift PI by phone (see Swift TOO web site for information: http://www.swift.psu.edu/too.html.)
GCN Circular #15817
D. Kuroda, K. Yanagisawa, Y. Shimizu, H. Toda (OAO, NAOJ), S. Nagayama (NAOJ), M. Yoshida (Hiroshima), K. Ohta (Kyoto) and N. Kawai(Tokyo Tech) report on behalf of MITSuME and OISTER collaboration:
We observed the field of GRB 140211A (Cummings et al., GCNC 15816) with the optical three color (g', Rc and Ic) CCD camera attached to the MITSuME 50cm telescope of Okayama Astrophysical Observatory.
The observation started on 2014-02-11 12:24:38 UT (~96 sec after the burst). We did not find any new point source within the BAT error circle (Cummings et al., GCNC 15816) in all the three bands.
Three sigma upper limits of the OT are listed below. We used SDSS DR7 catalog for flux calibration.
```
#T0+[day]  MID-UT    T-EXP[sec]   g'     Rc     Ic
-----------------------------------------------------
0.00544    12:30:52     600.0   >18.2  >18.1  >17.4
-----------------------------------------------------
T0+ : Elapsed time after the burst [day]
T-EXP: Total Exposure time [sec]
```
GCN Circular #15820
J. R. Cummings (GSFC/UMBC), S. D. Barthelmy (GSFC), W. H. Baumgartner (GSFC/UMBC), N. Gehrels (GSFC), H. A. Krimm (GSFC/USRA), A. Y. Lien (NASA/UMBC), C. B. Markwardt (GSFC), D. M. Palmer (LANL), T. Sakamoto (AGU), M. Stamatikos (OSU), J. Tueller (GSFC), T. N. Ukwatta (MSU) (i.e. the Swift-BAT team):
Using the data set from T-239 to T+843 sec from recent telemetry downlinks, we report further analysis of BAT GRB 140211A (trigger #586289) (Cummngs, et al., GCN Circ. 1816). The BAT ground-calculated position is RA, Dec = 124.233, 20.237 deg which is
```
   RA(J2000)  =  08h 16m 56.0s 
   Dec(J2000) = +20d 14' 14.3" 
```
with an uncertainty of 1.4 arcmin, (radius, sys+stat, 90% containment). The partial coding was 81%.
The mask-weighted light curve shows a single episode of emission starting at ~T-30 sec, peaking at ~T=5 sec, and ending at ~T+135 sec. T90 (15-350 keV) is 89.4 +- 18.7 sec (estimated error including systematics).
The time-averaged spectrum from T-16.84 to T+107.96 sec is best fit by a simple power-law model. The power law index of the time-averaged spectrum is 2.10 +- 0.14. The fluence in the 15-150 keV band is 1.8 +- 0.1 x 10^-6 erg/cm2. The 1-sec peak photon flux measured from T+0.90 sec in the 15-150 keV band is 0.7 +- 0.2 ph/cm2/sec. All the quoted errors are at the 90% confidence level.
The results of the batgrbproduct analysis are available at http://gcn.gsfc.nasa.gov/notices_s/586289/BA/
GCN Circular #15824
L. P. Xin, J. Y. Wei, X. F. Wang, Y. L. Qiu, J. S. Deng, J. Wang, T. M. Zhang, X. H. Han and C. Wu on behalf of EAFON report:
We began to observe GRB 140211A ( Cummings et al., GCN Cir. 15816) with Xinglong 0.8-m TNT telescope at 12:25:29 (UT) , 146 sec after the burst, under a bright sky background.
No any new object was detected within the BAT error circular (Cummings et al., GCNC 15816) in our combined images, down to the upper limit of 16.0 mag in R band, calibrated by nearby USNO B1.0 R2 mag, at the mean time of 7.2 min after the burst.
GCN Circular #15851
M. De Pasquale (MSSL-UCL), V. D'Elia (ASDC), L. Izzo (Uroma/ICRA) and =20 J. R. Cummings (NASA/UMBC) report on behalf of the Swift-XRT team:
We have analysed 2.7 ks of XRT data for GRB 140211A (Cummings=A0 et al. =20 GCN Circ. 15816),=A0 from 298.7 ks to 385.2 ks after the BAT trigger. =20 The data are entirely in Photon Counting (PC) mode. The refined XRT =20 position is RA, Dec =3D 124.22331, +20.2432 which is equivalent to:
```
RA (J2000): 08 16 53.59
Dec(J2000): +20 14 35.5
```
with an uncertainty of 4.4 arcsec (radius, 90% confidence). We cannot =20 determine at the present time whether the source is fading.
The results of the XRT-team automatic analysis are available at http://www.swift.ac.uk/xrt_products/00586289.
UVOT performed observations of GRB140211A in UVM2 and UVW1. At the =20 position of the XRT source, no counterpart is detected in these =20 filters in summed exposures. Preliminary 3-sigma upper limits using =20 the UVOT photometric system (Breeveld et al 2011, AIP Conf. Proc. =20 1358, 373) are
```
Filter=A0 =A0 =A0T_start (s)=A0 =A0 =A0T_Stop (s)=A0 =A0 =A0Exp (s)=A0 =A0=
 =A0Mag
um2=A0 =A0 =A0 =A0298690=A0 =A0 =A0 =A0 298860=A0 =A0 =A0 =A0 167=A0 =A0 =
=A0 =A0 >19.5
uw1=A0 =A0 =A0 =A0 338330=A0 =A0 =A0 =A0385245=A0 =A0 =A0 2438=A0 =A0 =A0=
 =A0 >21.3
```
No correction has been made for extinction corresponding to =20 E(B-V)=3D0.04 (Schlegel et al 1998).
This circular is an official product of the Swift team.
GCN Circular #15856
A. Volnova (IKI), N. Tungalag (Research Centre of Astronomy and Geophysics MAS), S. Schmalz (AIP), V. Voropaev (KIAM), I.Molotov (KIAM), A. Pozanenko (IKI) report on behalf of larger GRB follow-up collaboration:
We observed the field of the Swift Swift GRB 140211A (Cummings et al., GCN 15816) with ORI-40 telescope of Khureltogot observatory (Mongolia) starting on Feb., 11 (UT) 12:29:12, i.e., ~6 minutes after the trigger. We took several unfiltered images of 60 s exposure. Within the enhanced BAT error circle (Cummings et al., GCN 15820) we do not detect any optical counterpart in differently stacked images.
Details of the photometry are following:
```
UT start-end        t-T0       Exp.   Filter  OT    UL (3 sigma)
                    (mid, days) (s)
12:29:12-12:30:12   0.00450    1*60   None    n/d    17.0
12:29:12-12:40:31   0.00819   10*60   None    n/d    18.0
12:29:12-15:18:33   0.10468  100*60   None    n/d    18.8
```
The photometry is based on reference stars SDSS-DR9, (R mag, transformation by Lupton 2005):
```
N   SDSS_id               R(Lupton)
1   J081706.72+201335.6   18.171
2   J081655.77+201624.8   18.078
```

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Jochen Greiner, last update: 17-Feb-2014 [Disclaimer]