GRB161214B

This page lists all entries on GRB161214B in GRBweb

Summary Fermi GBM IPN Swift GCN 20257 GCN 20259 GCN 20260 GCN 20261 GCN 20262 GCN 20263 GCN 20264 GCN 20265 GCN 20266 GCN 20268 GCN 20270 GCN 20275 GCN 20279 GCN 20319 GCN 20345 GCN 20453

Summary table
Variable Value Source
GRB_name_Fermi GRB161214722
T0 17:20:10 UTC GCN_circulars,Swift Det
ra 3.8512° Swift
decl 7.3524° Swift
pos_error 1.94e-04° Swift
T90 22.528 s Fermi_GBM
T90_error 1.619 s Fermi_GBM
T90_start 17:20:10.969 UTC Fermi_GBM
fluence 3.11e-06 erg/cm² Fermi_GBM
fluence_error 3.72e-08 erg/cm² Fermi_GBM
T100 24.8 s
GBM_located False
mjd 57736.722337962965 GCN_circulars,Swift Det
Fermi GBM table
GRB_name_Fermi GRB161214722
trigger_name bn161214722
ra 3.8500°
decl 7.3419°
pos_error 4.57e+00°
datum 2016-12-14
t_trigger 17:20:11.225 UTC
T90 22.528 s
T90_error 1.619 s
T90_start 17:20:10.969 UTC
fluence 3.11e-06 erg/cm²
fluence_error 3.72e-08 erg/cm²
flux_1024 3.67e+00 erg/cm²/s
flux_1024_error 2.46e-01 erg/cm²/s
flux_1024_time -3.84e-01 erg/cm²/s
flux_64 5.57e+00 erg/cm²/s
flux_64_error 1.16e+00 erg/cm²/s
IPN table
GRB_name GRB161214B
ra 3.8500°
decl 7.3500°
pos_error 5.00e-02°
Swift table
GRB_name GRB161214B
t_trigger 17:20:10 UTC
ra 3.8512°
decl 7.3524°
pos_error 1.94e-04°
T90 24.8 s
fluence 2.10e-06 erg/cm²
GCN 20257 table
GRB_name GRB161214B
GCN_number 20257
Detection_method Swift Det
t_trigger 17:20:10 UTC
ra 3.8500°
decl 7.3420°
Circular_text TITLE: GCN CIRCULAR NUMBER: 20257 SUBJECT: GRB 161214B: Swift detection of a burst DATE: 16/12/14 17:32:35 GMT FROM: David Burrows at PSU/Swift P. D'Avanzo (INAF-OAB), D. N. Burrows (PSU), J. A. Kennea (PSU), H. A. Krimm (CRESST/NSF/USRA), N. P. M. Kuin (UCL-MSSL), A. Y. Lien (GSFC/UMBC), A. Melandri (INAF-OAB), K. L. Page (U Leicester), D. M. Palmer (LANL) and M. H. Siegel (PSU) report on behalf of the Swift Team: At 17:20:10 UT, the Swift Burst Alert Telescope (BAT) triggered and located GRB 161214B (trigger=726885). Swift slewed immediately to the burst. The BAT on-board calculated location is RA, Dec 3.850, +7.342 which is RA(J2000) = 00h 15m 24s Dec(J2000) = +07d 20' 31" with an uncertainty of 3 arcmin (radius, 90% containment, including systematic uncertainty). The BAT light curve showed a single FRED-shaped structure with a duration of about 20 sec. The peak count rate was ~2900 counts/sec (15-350 keV), at ~1 sec after the trigger. The XRT began observing the field at 17:21:25.5 UT, 74.9 seconds after the BAT trigger. Using promptly downlinked data we find a bright, uncatalogued X-ray source located at RA, Dec 3.85151, 7.35291 which is equivalent to: RA(J2000) = 00h 15m 24.36s Dec(J2000) = +07d 21' 10.5" with an uncertainty of 4.2 arcseconds (radius, 90% containment). This location is 39 arcseconds from the BAT onboard position, within the BAT error circle. This position may be improved as more data are received; the latest position is available at http://www.swift.ac.uk/sper. We cannot determine whether the source is fading at the present time. No spectrum from the promptly downlinked event data is yet available to determine the column density. The initial flux in the 2.5 s image was 1.29e-09 erg cm^-2 s^-1 (0.2-10 keV). UVOT data are unavailable at this time. Burst Advocate for this burst is P. D'Avanzo (paolo.davanzo AT brera.inaf.it). 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 20259 table
GRB_name GRB161214B
GCN_number 20259
Detection_method Swift-XRT Other
ra 3.8510°
decl 7.3522°
Circular_text TITLE: GCN CIRCULAR NUMBER: 20259 SUBJECT: GRB 161214B: Prompt enhanced Swift-XRT position DATE: 16/12/14 17:51:22 GMT FROM: Phil Evans at U of Leicester P.A. Evans (U. Leicester) reports on behalf of the Swift-XRT team: Using promptly downlinked XRT event data for GRB 161214B, we find an enhanced XRT position of the afterglow: RA, Dec: 3.8510, 7.3522 which is equivalent to: RA (J2000) = 00 15 24.23 Dec (J2000) = +07 21 08.0 with an uncertainty of 2.1 arcseconds (radius, 90% confidence). Analysis of the promptly available data is online at http://www.swift.ac.uk/sper/726885. Position enhancement is is described by Goad et al. (2007, A&A, 476, 1401) and Evans et al. (2009, MNRAS, 397, 1177). This circular is an official product of the Swift-XRT team.
GCN 20260 table
GRB_name GRB161214B
GCN_number 20260
Detection_method Optical
Circular_text TITLE: GCN CIRCULAR NUMBER: 20260 SUBJECT: GRB 161214B: NOT optical observations, possible counterpart DATE: 16/12/14 21:15:24 GMT FROM: Daniele Malesani at Dark Cosmology Centre, Niels Bohr Inst D. Malesani (DARK/NBI and DTU Space), D. A. Perley (DARK/NBI), D. Xu (NAOC/CAS), N. R. Tanvir (Univ. Leicester), G. Fedorets (NOT and Univ. Helsinki), report on behalf of a larger collaboration: We observed the field of GRB 161214B (D'Avanzo et al., GCN 20257) with the Nordic Optical Telescope equipped with the AlFOSC camera. Seeing conditions were modest (1.2"). In a 300-s image taken in the SDSS r band (mean time 2016 Dec 14.815 UT, that is 2.2 hr after the GRB), we detect a single object within the updated XRT error circle (Evans, GCN 20259), which is visible in archival images (e.g. from the DSS and SDSS). No other objects are visible within or close to the XRT position (though, the glare of this object affects negatively the search for such objects). As this field is covered from the SDSS, we can compute accurate photometry of this object, r = 18.35 +- 0.02 (AB). The brightness of this object is 0.76 +- 0.03 mag brighter then its archival value from the SDSS, and it shows hint of extension in our images. One possibility is that the detected source is actually the blending of two very nearby objects, possibly the optical afterglow of GRB 161214B and an unrelated, foreground star. However, given the modest seeing of our images, we cannot exclude a real physical association between the SDSS object and the GRB. [GCN OPS NOTE(14dec16): Per author's request, the GRB name in the last paragraph was changed from "161014B" to "161214B".]
GCN 20261 table
GRB_name GRB161214B
GCN_number 20261
Detection_method Swift-UVOT Det
Circular_text TITLE: GCN CIRCULAR NUMBER: 20261 SUBJECT: GRB 161214B: Swift/UVOT Observations DATE: 16/12/14 21:55:35 GMT FROM: Frank Marshall at GSFC F. E. Marshall (NASA/GSFC) and P. D'Avanzo (INAF-OAB) report on behalf of the Swift/UVOT team: The Swift/UVOT began settled observations of the field of GRB 161214B 295 s after the BAT trigger (D'Avanzo et al., GCN Circ. 20257). A single source is detected within the enhanced XRT error region (Evans, GCN Circ. 20259) in the initial UVOT exposures. The source position is consistent with that of SDSS J001524.26+072108.5 and also with that of an entry in the USNO-B1.0 catalog. Since the two UVOT exposures were taken with different filters, it is not yet possible to report on variability. It is possible that some of the flux is due to an optical afterglow (as suggested for NOT observations by Malesani et al. GCN Circ. 20260). Preliminary detections using the UVOT photometric system (Breeveld et al. 2011, AIP Conf. Proc. 1358, 373) for the first finding chart (FC) exposures are: Filter T_start(s) T_stop(s) Exp(s) Mag u_FC 295 545 246 18.4 +/- 0.2 white_FC 872 955 82 18.1 +/- 0.2 The magnitudes in the table are not corrected for the Galactic extinction due to the reddening of E(B-V) = 0.08 in the direction of the burst (Schlegel et al. 1998).
GCN 20262 table
GRB_name GRB161214B
GCN_number 20262
Detection_method Optical
Circular_text TITLE: GCN CIRCULAR NUMBER: 20262 SUBJECT: GRB 161214B: Chante-perdrix observatory optical observations DATE: 16/12/14 23:41:41 GMT FROM: Alain Klotz at IRAP-CNRS-OMP Kugel F. (Chante-perdrix observatory) report: We imaged the field of GRB 161214B detected by SWIFT (trigger 726885) with a 400 mm telescope (F/D=3) located at the Chante-perdrix observatory, France (IAU A77). The CCD camera is an Atik 460EX unfiltered. We detect the same star as Malesani et al. (GCNC 20260). A first series images show the star 0.7 magnitude brighter than measured in later images: t0 + 8.1 min to t0 + 20.1 min : R = 17.2 +/- 0.3 t0 + 106.6 min to t0 + 128.6 min : R = 17.9 +/- 0.3 t0 + 131.1 min to t0 + 153.1 min : R = 17.9 +/- 0.3 Magnitudes were estimated with the nearby USNO-SA stars and are not corrected for galactic dust extinction.
GCN 20263 table
GRB_name GRB161214B
GCN_number 20263
Detection_method Optical
Circular_text TITLE: GCN CIRCULAR NUMBER: 20263 SUBJECT: GRB 161214B: TAROT Calern observatory optical observations DATE: 16/12/14 23:43:16 GMT FROM: Alain Klotz at IRAP-CNRS-OMP 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 161214B detected by SWIFT (trigger 726885) with the TAROT robotic telescope (D=25cm) located at the Calern observatory, France. The observations started 32.4s after the GRB trigger (17.7s after the notice). The elevation of the field increased from 51 degrees above horizon and weather conditions were good with the moon. The first image is trailed with a duration of 60.0s (see the description in Klotz et al., 2006, A&A 451, L39). We do not detect any OT with a limiting magnitude of: t0+32.4s to t0+92.4s : Rlim = 17.3 Later images show the star at the following magnitudes: t0+ 1046 sec to t0+ 1496 sec : 17.6 +/- 0.5 t0+ 1561 sec to t0+ 2371 sec : 17.8 +/- 0.5 t0+ 3681 sec to t0+ 4581 sec : 18.2 +/- 0.7 Magnitudes were estimated with the nearby NOMAD1 stars and are not corrected for galactic dust extinction.
GCN 20264 table
GRB_name GRB161214B
GCN_number 20264
Detection_method Swift-XRT Det
ra 3.8512°
decl 7.3524°
Circular_text TITLE: GCN CIRCULAR NUMBER: 20264 SUBJECT: GRB 161214B: Enhanced Swift-XRT position DATE: 16/12/15 00:12:53 GMT FROM: Phil Evans at U of Leicester M.R. Goad, J.P. Osborne, A.P. Beardmore and P.A. Evans (U. Leicester) report on behalf of the Swift-XRT team. Using 3923 s of XRT Photon Counting mode data and 7 UVOT images for GRB 161214B, we find an astrometrically corrected X-ray position (using the XRT-UVOT alignment and matching UVOT field sources to the USNO-B1 catalogue): RA, Dec = 3.85122, +7.35236 which is equivalent to: RA (J2000): 00h 15m 24.29s Dec (J2000): +07d 21' 08.5" with an uncertainty of 1.5 arcsec (radius, 90% confidence). This position may be improved as more data are received. The latest position can be viewed at http://www.swift.ac.uk/xrt_positions. Position enhancement is described by Goad et al. (2007, A&A, 476, 1401) and Evans et al. (2009, MNRAS, 397, 1177). This circular was automatically generated, and is an official product of the Swift-XRT team.
GCN 20265 table
GRB_name GRB161214B
GCN_number 20265
Detection_method Swift-XRT Other
Circular_text TITLE: GCN CIRCULAR NUMBER: 20265 SUBJECT: GRB 161214B: Swift-XRT refined Analysis DATE: 16/12/15 05:10:40 GMT FROM: Phil Evans at U of Leicester D.N. Burrows (PSU), T.G.R. Roegiers (PSU), J.P. Osborne (U. Leicester), K.L. Page (U. Leicester), B. Mingo (U. Leicester), V. D'Elia (ASDC), A. D'Ai (INAF-IASFPA), A. Melandri (INAF-OAB), L.M. McCauley (PSU) and P. D'Avanzo report on behalf of the Swift-XRT team: We have analysed 9.1 ks of XRT data for GRB 161214B (D'Avanzo et al. GCN Circ. 20257), from 64 s to 29.6 ks after the BAT trigger. The data comprise 234 s in Windowed Timing (WT) mode (the first 9 s were taken while Swift was slewing) with the remainder in Photon Counting (PC) mode. The enhanced XRT position for this burst was given by Goad et al. (GCN Circ. 20259). The late-time light curve (from T0+5.1 ks) can be modelled with a power-law decay with a decay index of alpha=0.63 (+/-0.09). A spectrum formed from the WT mode data can be fitted with an absorbed power-law with a photon spectral index of 2.54 (+0.16, -0.15). The best-fitting absorption column is 1.22 (+0.33, -0.30) x 10^21 cm^-2, in excess of the Galactic value of 7.2 x 10^20 cm^-2 (Willingale et al. 2013). The PC mode spectrum has a photon index of 1.94 (+0.15, -0.14) and a best-fitting absorption column of 9.3 (+3.9, -2.0) x 10^20 cm^-2. The counts to observed (unabsorbed) 0.3-10 keV flux conversion factor deduced from this spectrum is 3.4 x 10^-11 (4.1 x 10^-11) erg cm^-2 count^-1. A summary of the PC-mode spectrum is thus: Total column: 9.3 (+3.9, -2.0) x 10^20 cm^-2 Galactic foreground: 7.2 x 10^20 cm^-2 Excess significance: <1.6 sigma Photon index: 1.94 (+0.15, -0.14) The results of the XRT-team automatic analysis are available at http://www.swift.ac.uk/xrt_products/00726885. This circular is an official product of the Swift-XRT team. [GCN OPS NOTE(15dec16): Per author's request, the value for alpha was added in the second paragraph.]
GCN 20266 table
GRB_name GRB161214B
GCN_number 20266
Detection_method Swift-XRT Other
Circular_text TITLE: GCN CIRCULAR NUMBER: 20266 SUBJECT: GRB 161214B: RATIR Optical and Near-Infrared Observations DATE: 16/12/15 05:21:07 GMT FROM: Alan M. Watson at Instituto de Astronomia UNAM Alan M. Watson (UNAM), Nat Butler (ASU), Alexander Kutyrev (GSFC), William H. Lee (UNAM), Michael G. Richer (UNAM), Ori Fox (STScI), J. Xavier Prochaska (UCSC), Josh Bloom (UCB), Antonino Cucchiara (UVI), Eleonora Troja (GSFC), Owen Littlejohns (ASU), Enrico Ramirez-Ruiz (UCSC), José A. de Diego (UNAM), Leonid Georgiev (UNAM), Jesús González (UNAM), Carlos Román-Zúñiga (UNAM), Neil Gehrels (GSFC), Harvey Moseley (GSFC), John Capone (UMD), V. Zach Golkhou (ASU), and Vicki Toy (UMD) report: We observed the field of GRB 161214B (D'Avanzo et al., GCN Circ. 20257) with the Reionization and Transients Infrared Camera (RATIR; www.ratir.org) on the 1.5m Harold Johnson Telescope at the Observatorio Astronómico Nacional on Sierra San Pedro Mártir from 2016/12 15.08 to 2016/12 15.10 UTC (8.60 to 9.05 hours after the BAT trigger), obtaining a total of 0.26 hours exposure in the r and i bands and 0.15 hours exposure in the Z, Y, J, and H bands. We detect a source within the Swift-XRT enhanced error circle (Evans, GCN Circ 20259. In comparison with the SDSS DR9 and 2MASS catalogs, we obtain the following magnitudes: r 18.87 +/- 0.01 i 18.56 +/- 0.01 Z 18.34 +/- 0.01 Y 18.23 +/- 0.03 J 18.23 +/- 0.03 H 18.05 +/- 0.04 These magnitudes are in the AB system and are not corrected for Galactic extinction in the direction of the GRB. The fading from r = 18.35 reported at 2.2 hours by Malesani et al. (GCN Circ. 20260) to our observation of r = 18.87 at 8.8 hours confirms the behavior reported by Kugel (GCN Circ. 20262). Our image quality is about 1.7 arcsec FWHM, so we are not able to separate this source from the nearly coincident r = 19.09 SDSS source J001524.26+072108.5 mentioned by Malesani et al. We thank the staff of the Observatorio Astronómico Nacional in San Pedro Mártir.
GCN 20268 table
GRB_name GRB161214B
GCN_number 20268
Detection_method Swift-UVOT Other
Circular_text TITLE: GCN CIRCULAR NUMBER: 20268 SUBJECT: GRB 161214B: Swift/UVOT Afterglow Confirmation DATE: 16/12/15 14:57:31 GMT FROM: Frank Marshall at GSFC F. E. Marshall (NASA/GSFC) and P. D'Avanzo (INAF-OAB) report on behalf of the Swift/UVOT team: Continuing Swift/UVOT observations of the field of GRB 161214B (D'Avanzo et al., GCN Circ. 20257) show that the single source consistent with the XRT position (Goad et al. GCN Circ. 20264) reported by Marshall and D'Avanzo (GCN Circ. 20261) brightened to 17.89 mag in white and then subsequently dimmed by more than 1 magnitude. This confirms the detection of the afterglow reported by Kugel (GCN Circ. 20262), Klotz et al. (GCN Circ. 20263), and Watson et al. (GCN Circ. 20266) following the suggestion by Malesani et al. (GCN Circ. 20260). Detection of the afterglow in the w2 filter indicates that the redshift is < 1.5. Preliminary detections using the UVOT photometric system (Breeveld et al. 2011, AIP Conf. Proc. 1358, 373) for the early exposures are given in the following table. The magnitudes include contributions from both the afterglow and the catalogued star SDSS J001524.26+072108.5. Filter T_start(s) T_stop(s) Exp(s) Mag white 84 234 147 19.3 +/- 0.1 white 748 768 18 17.9 +/- 0.1 white 27988 28895 841 19.5 +/- 0.1 u 296 546 246 18.4 +/- 0.1 u 17963 18176 208 19.1 +/- 0.2 w2 5119 5319 197 18.8 +/- 0.2 w2 28903 29657 742 20.4 +/- 0.2 The magnitudes in the table are not corrected for the Galactic extinction due to the reddening of E(B-V) = 0.08 in the direction of the burst (Schlegel et al. 1998).
GCN 20270 table
GRB_name GRB161214B
GCN_number 20270
Detection_method Swift-BAT Det
ra 3.8570°
decl 7.3420°
Circular_text TITLE: GCN CIRCULAR NUMBER: 20270 SUBJECT: GRB 161214B: Swift-BAT refined analysis DATE: 16/12/15 17:35:50 GMT FROM: Hans Krimm at NSF/NASA-GSFC H. A. Krimm (NSF/USRA), S. D. Barthelmy (GSFC), J. R. Cummings (CPI), P. D'Avanzo (INAF-OAB), N. Gehrels (GSFC), A. Y. Lien (GSFC/UMBC), C. B. Markwardt (GSFC), D. M. Palmer (LANL), T. Sakamoto (AGU), M. Stamatikos (OSU), T. N. Ukwatta (LANL) (i.e. the Swift-BAT team): Using the data set from T-240 to T+962 sec from the recent telemetry downlink, we report further analysis of BAT GRB 161214B (trigger #726885) (D'Avanzo, et al., GCN Circ. 20257). The BAT ground-calculated position is RA, Dec = 3.857, 7.342 deg which is RA(J2000) = 00h 15m 25.6s Dec(J2000) = +07d 20' 30.7” with an uncertainty of 1.0 arcmin, (radius, sys+stat, 90% containment). The partial coding was 64%. The mask-weighted light curve shows a single, FRED-shaped peak, beginning at T-2 sec, peaking at T+0 sec and fading to background by T+30 sec. There is a soft precursor at T-74 sec, which was detected on board at too low significance to trigger. T90 (15-350 keV) is 24.8 +- 3.1 sec (estimated error including systematics). The time-averaged spectrum from T-0.42 to T+30.75 sec is best fit by a simple power-law model. The power law index of the time-averaged spectrum is 1.76 +- 0.09. The fluence in the 15-150 keV band is 2.1 +- 0.1 x 10^-6 erg/cm2. The 1-sec peak photon flux measured from T+0.11 sec in the 15-150 keV band is 2.2 +- 0.2 ph/cm2/sec. All the quoted errors are at the 90% confidence level.
GCN 20275 table
GRB_name GRB161214B
GCN_number 20275
Detection_method Optical
Circular_text TITLE: GCN CIRCULAR NUMBER: 20275 SUBJECT: GRB 161214B: Mondy optical observations DATE: 16/12/16 18:12:42 GMT FROM: Alexei Pozanenko at IKI, Moscow E. Mazaeva (IKI), A. Pozanenko (IKI), E. Klunko (ISTP), A. Volnova (IKI), I. Korobtsev (ISTP) report on behalf of larger GRB follow-up collaboration: We observed the field of GRB 161214B (D'Avanzoet al., GCN 20257) with AZT-33IK telescope of Sayan observatory (Mondy) starting on December, 15 (UT) 13:22:26. We obtained several images in R-filter. The source previously reported (Malesani et al. GCN 20260; Marshall et al. GCN 20261) is clearly visible. Preliminary photometry of the source is following Date UT start t-T0 Filter Exp. OT Err. UL (mid, days) (s) 2016-12-15 13:22:26 0.85579 R 120*30 18.69 0.03 21.9 The photometry includes a catalogued star SDSS J001524.26+072108.5 already mentioned by Malesani et al. (GCN 20260) and Marshall et al. (GCN 20268). The R magnitude of the star obtained by Lupton transformations is 18.83 +/- 0.03. Photometry is based on nearby SDSS-DR9 stars SDSS-DR9_id R(Lupton) J001520.09+072300.5 17.01 J001517.29+072310.4 17.05 J001513.07+071914.3 17.28 J001511.86+071859.3 16.07 J001513.35+071841.1 15.26 J001525.83+072141.2 14.31 J001524.40+072156.0 17.79 J001530.21+072230.9 16.94
GCN 20279 table
GRB_name GRB161214B
GCN_number 20279
Detection_method Optical
Circular_text TITLE: GCN CIRCULAR NUMBER: 20279 SUBJECT: GRB 161214B: AbAO and ISON/Terskol optical observations DATE: 16/12/17 07:25:30 GMT FROM: Alexei Pozanenko at IKI, Moscow E. Mazaeva (IKI), R. Inasaridze (AbAO), A. Mokhnatkin (KIAM), A. Pozanenko (IKI), A. Volnova (IKI), V. Ayvazian (AbAO), V. Zhuzhunadze, (AbAO), O.Kvaratskhelia (AbAO), G. Inasaridze (AbAO), I. Molotov (KIAM) report on behalf of larger GRB follow-up collaboration: We observed the field of GRB 161214B (D'Avanzoet al., GCN 20257) with AS-32 (0.7m) telescope of Abastumani Observatory and with K-800 (0.8m) telescope of ISON/Terskol observatory on December, 15. We obtained several unfiltered images in each observatory. The source previously reported (Malesani et al. GCN 20260; Marshall et al. GCN 20261) is clearly visible. Preliminary photometry of the source is following Date UT start t-T0 Filter Exp. OT Err. UL (mid, days) (s) 2016-12-15 15:31:49 0.97738 CR 85*60 18.79 0.05 22.2 AS-32 2016-12-15 18:07:05 1.06047 CR 142*30 18.76 0.13 21.4 K-800 Photometry is based on R-magnitudes the same stars used in (Mazaeva et al., GCN 20275)
GCN 20319 table
GRB_name GRB161214B
GCN_number 20319
Detection_method Optical
Circular_text TITLE: GCN CIRCULAR NUMBER: 20319 SUBJECT: GRB 161214B: optical spectroscopy of the foreground SDSS object DATE: 16/12/21 10:31:39 GMT FROM: Daniele Malesani at Dark Cosmology Centre, Niels Bohr Inst D. Malesani (DARK/NBI and DTU Space), J. P. U. Fynbo (DARK/NBI), B. Milvang-Jensen (DARK/NBI), N. R. Tanvir (Univ. Leicester), M. I. Andersen (DARK/NBI), H. Korhonen (DARK/NBI), D. A. Perley (DARK/NBI), T. Kruehler (MPE), D. Xu (NAOC/CAS), G. Fedorets (NOT and Univ. Helsinki), report on behalf of a larger collaboration: We report on further analysis of our data (Malesani et al., GCN 20260) taken at the Nordic Optical Telescope for GRB 161214B (D'Avanzo et al., GCN 20257). The best-seeing images (~0.9") clearly reveal two blended objects within the XRT error circle, separated by <1 arcsec, with comparable brightness (at ~2.2 hr after the GRB). As first suggested in GCN 20260, the likely interpretation is the near-superposition of the afterglow of GRB 161214B and an unrelated, foreground object. Astrometric registration of our images with the SDSS frames shows that the afterglow is slightly south of the SDSS source. A spectrum of the complex was secured using the AlFOSC spectrograph, covering both objects. Observations started on 2016 Dec 14.82 UT (2.42 hr after the GRB) and consisted of 2x20 min exposures using grism #4, covering the wavelength range 3500-9400 AA. A few absorption lines are apparent, and there is a hint that their spatial extent on the trace is offset to the North (consistent with the SDSS source location). The two most prominent features can be identified as the Mg I b triplet and the Na I D doublet at redshift ~0, confirming that the SDSS object is a Galactic star (probably of K or early M type). One more feature is observed at ~4238 AA, whose identification is unclear. One possibility is the Ca I 4226 A resonant line at z = 0, sometimes observed in K stars, which would however require an offset of the wavelength calibration in the blue part of our spectrum. No features which can be clearly attributed to the afterglow are detected in our spectrum. Marshall & D'Avanzo (GCN 20268) report detection of the afterglow in the UVOT UVW2 filter, at a flux level much brighter than the SDSS object (u ~ 22.5). This allows to set an upper limit to the redshift z <~ 1.2 from the absence of the Lyman limit dropout.
GCN 20345 table
GRB_name GRB161214B
GCN_number 20345
Detection_method Optical
Circular_text TITLE: GCN CIRCULAR NUMBER: 20345 SUBJECT: GRB 161214B: MASTER-Kislovodsk early optical observations DATE: 16/12/27 17:03:34 GMT FROM: Vladimir Lipunov at Moscow State U/Krylov Obs 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 Kislovodsk was pointed to the GRB161214B 882 sec after notice time and 900.34 sec after trigger time at 2016-12-14 17:35:11 UT. On our first (180s exposure) set we haven't found optical transient within Swift error-box (ra=00 16 16 dec=+07 26 10 r=3.00) (D'Avanzo et al., GCN 20257). The 5-sigma upper limit set is about 16.5 mag(polaroid, unfiltered). The observations made on zenit distance = 49 degrees, galaxy latitude b = -54 degree. The moon (98 % bright part) is 29.5 degrees above the horizon. The distance between moon and object is 87 The sun altitude is -40 degree. The object can be observed till 2016-12-14 22:27:18 Maximal coadded limit ~18.7 m. No OT found. The message may be cited.
GCN 20453 table
GRB_name GRB161214B
GCN_number 20453
Detection_method Swift Other
Circular_text TITLE: GCN CIRCULAR NUMBER: 20453 SUBJECT: GRB 161214B: 15 GHz upper limits from AMI DATE: 17/01/13 18:59:15 GMT FROM: Kunal Mooley at Oxford U K. P. Mooley, T. D. Staley, R. P. Fender (Oxford), G. E. Anderson (Curtin), T. Cantwell (Manchester), D. Titterington, S. H. Carey, J. Hickish, Y. C. Perrott, N. Razavi-Ghods, P. Scott (Cambridge), K. Grainge, A. Scaife (Manchester) The AMI Large Array robotically triggered on the Swift alert for GRB 161214B (D'Avanzo et al., GCN 20257) as part of the 4pisky program, and subsequent follow up observations were obtained up to 10 days post-burst. Our observations at 15 GHz on 2016 Dec 14.76, Dec 16.76, Dec 18.75 and Dec 21.74 (UT) do not reveal any radio source at the XRT location (Goad et al., GCN 20264), with 3sigma upper limits of 96 uJy, 87 uJy, 85 uJy and 104 uJy respectively. We thank the AMI staff for scheduling these observations. The AMI-GRB database is a log of all GRB follow up observations with the AMI, and is available at http://4pisky.org/ami-grb/.