GRB201014A

This page lists all entries on GRB201014A in GRBweb

Summary IPN Swift GCN 28626 GCN 28628 GCN 28629 GCN 28630 GCN 28638 GCN 28644 GCN 28650 GCN 28654 GCN 28655 GCN 28685 GCN 28689 GCN 28699 GCN 28741

Summary table
Variable Value Source
T0 22:48:38 UTC Swift
ra 20.7962° Swift
decl 27.6603° Swift
pos_error 2.33e-04° Swift
T90 36.2 s Swift
T90_start 22:48:38 UTC Swift
fluence 3.10e-07 erg/cm² Swift
redshift 4.5600 GCN_circulars,Other
T100 36.2 s
GBM_located False
mjd 59136.95043981481 Swift
IPN table
GRB_name GRB201014A
ra 20.8458°
decl 27.7000°
pos_error 5.00e-02°
redshift 4.5600
Swift table
GRB_name GRB201014A
t_trigger 22:48:38 UTC
ra 20.7962°
decl 27.6603°
pos_error 2.33e-04°
T90 36.2 s
fluence 3.10e-07 erg/cm²
redshift 4.5600
GCN 28626 table
GRB_name GRB201014A
GCN_number 28626
Detection_method Swift-BAT Det
ra 1.0000°
decl 27.0000°
Circular_text TITLE: GCN CIRCULAR NUMBER: 28626 SUBJECT: Swift-BAT trigger 1000255: XRT afterglow detection of GRB 201014A DATE: 20/10/15 09:45:28 GMT FROM: Valerio D'Elia at ASDC V. D’Elia (SSDC), E. Ambrosi, A. D’Aì (INAF-IASFPA) and P.A. Evans (U. Leicester) report for the Swift-XRT team: We have analysed 1.5 ks of XRT data for the Swift trigger 1000255 (Ambrosi et al. GCN Circ. 28623), from 156 s to 5.2 ks after the BAT trigger. The data are entirely in Photon Counting (PC) mode. We detect a bright (2.2E-1 cts/s), fading, uncatalogued X-ray source at the UVOT-enhanced position: 20.79619, 27.66024 which is equivalent to: RA (J2000): 01 23 11.09 Dec (J2000): +27 39 36.9 with an uncertainty of 1.8 arcseconds (radius, 90% containment). This location is 3.3 arcminutes from the BAT onboard position, at the margin of the BAT error circle. This position was outside of the central window which is telemetered promptly, hence the source was not seen in the initial real-time analysis Given that no catalogued X-ray sources are present within 5 arc minutes from the XRT position, we conclude that Swift-BAT trigger 1000255 is not due to noise but indeed is a GRB, and the reported source is the X-ray afterglow of GRB 201014A. This is an official product of the Swift-XRT team.
GCN 28628 table
GRB_name GRB201014A
GCN_number 28628
Detection_method Optical
Circular_text TITLE: GCN CIRCULAR NUMBER: 28628 SUBJECT: GRB 201014A (Swift trigger =1000255): CrAO/ZTSH optical afterglow discovery DATE: 20/10/15 12:53:30 GMT FROM: Alexei Pozanenko at IKI, Moscow A. Pozanenko (IKI), N. Pankov (HSE), V. Rumyantsev (CrAO), S. Belkin (IKI), A. Volnova (IKI) report on behalf of larger GRB follow-up collaboration: We observed the field of the GRB 201014A = (trigger=1000255) (Ambrosi et al., GCN 28623) with ZTSH 2.6m telescope of CrAO observatory starting on Oct. 14 (UT) 23:06:56, i.e. 18.3 minutes after burst detection. We detect an object at the edge of enhanced XRT afterglow position (D’Elia et al., GCN 28626). The coordinates of the object are (J2000) 01 23 11.058 +27 39 38.39 with uncertainty of 0.3 arcsec in each coordinate.The object is absent in both SDSS DR12 and PS1 catalogues. We suggest the object is an optical afterglow GRB 201014A. Preliminary photometry of the object in a combined image is following Date UT start t-T0 Filter Exp. OT err UL(3sigma) (mid, days) (s) 2018-10-14 23:06:56 0.021967 R 11*120 21.50 0.15 22.6 The photometry is based on several nearby USNO-B1.0 stars.
GCN 28629 table
GRB_name GRB201014A
GCN_number 28629
Detection_method Swift-BAT Det
ra 20.8340°
decl 27.7220°
Circular_text TITLE: GCN CIRCULAR NUMBER: 28629 SUBJECT: GRB 201014A: Swift-BAT refined analysis DATE: 20/10/15 17:09:01 GMT FROM: Amy Lien at GSFC A. Y. Lien (GSFC/UMBC), E. Ambrosi (INAF-IASFPA), S. D. Barthelmy (GSFC), J. R. Cummings (CPI), H. A. Krimm (NSF), S. Laha (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-239 to T+963 sec from the recent telemetry downlink, we report further analysis of BAT GRB 201014A (trigger #1000255) (Ambrosi et al., GCN Circ. 28623; D'Elia et al., GCN Circ 28626). The BAT ground-calculated position is RA, Dec = 20.834, 27.722 deg which is RA(J2000) = 01h 23m 20.2s Dec(J2000) = +27d 43' 19.1" with an uncertainty of 2.5 arcmin, (radius, sys+stat, 90% containment). The partial coding was 100%. The mask-weighted light curve shows a weak pulse that starts at ~T+30 s and ends at ~T+70 s. T90 (15-350 keV) is 36.2 +- 8.1 sec (estimated error including systematics). The time-averaged spectrum from T+30.16 to T+69.84 sec is best fit by a simple power-law model. The power law index of the time-averaged spectrum is 2.55 +- 0.37. The fluence in the 15-150 keV band is 3.1 +- 0.7 x 10^-7 erg/cm2. The 1-sec peak photon flux measured from T+59.44 sec in the 15-150 keV band is 0.3 +- 0.2 ph/cm2/sec. All the quoted errors are at the 90% confidence level. The ground analysis shows an improved image significance of 8.2 sigma in 15-350 keV. Also, the temporal and spectral characteristics are consistent with those of a long GRB. Therefore, the BAT ground analysis confirms that this is a GRB, consistent with the conclusion reported in D'Elia et al., GCN Circ 28626. The results of the batgrbproduct analysis are available at http://gcn.gsfc.nasa.gov/notices_s/1000255/BA/
GCN 28630 table
GRB_name GRB201014A
GCN_number 28630
Detection_method Optical
Circular_text TITLE: GCN CIRCULAR NUMBER: 28630 SUBJECT: GRB 201014A: BOOTES-1 and -2 early optical upper limits DATE: 20/10/15 17:13:22 GMT FROM: Youdong HU at IAA-CSIC Y.-D. Hu, E. Fernandez-Garcia, A. J. Castro-Tirado (IAA-CSIC), C. Perez del Pulgar, A. Castellon, I. Carrasco, A. Reina (Univ. de Malaga), R. Fernandez-Munoz (IHSM/UMA-CSIC) and F. Rendon (IAA-CSIC and INTA-CEDEA) on behalf of a larger collaboration, report: Following the Swift trigger of GRB 201014A (Ambrosi et al., GCNC 28623), the 60cm BOOTES-2/TELMA robotic telescope at IHSM La Mayora (UMA-CSIC) in Algarrobo Costa (Malaga, Spain) automatically responded to this event. A series of images were taken starting 22:50:46UT (132 s after trigger) with clear filter. In the co-added 60s exposure image, no soure is detected which down to 20.6 mag at the XRT afterglow position (DElia et al., GCNC 28626). The 0.3m BOOTES-1B robotic telescope in Mazagon (Huelva), southern Spain, automatically responded to this event at 22:50:20UT (102 s after trigger). In the co-added of 60 s exposure images, no new source is detected which down to 20.3 mag (clear filter). These early optical non-detections are consistent with the afterglow magnitude reported by Pozanenko et al. (GCNC 28628). We thank the staff at INTA-CEDEA and La Mayora for their excellent support.
GCN 28638 table
GRB_name GRB201014A
GCN_number 28638
Detection_method Swift-XRT Other
ra 20.7962°
decl 27.6602°
Circular_text TITLE: GCN CIRCULAR NUMBER: 28638 SUBJECT: GRB 201014A: Swift-XRT refined Analysis DATE: 20/10/16 01:59:34 GMT FROM: Phil Evans at U of Leicester M. Perri (ASDC), V. D'Elia (ASDC), A. D'Ai (INAF-IASFPA), D.N. Burrows (PSU), J. D. Gropp (PSU), J.A. Kennea (PSU), J.P. Osborne (U. Leicester), K.L. Page (U. Leicester), A.P. Beardmore (U. Leicester) and V.D’Elia report on behalf of the Swift-XRT team: We have analysed 5.1 ks of XRT data for GRB 201014A (D’Elia et al. GCN Circ. 28626), from 176 s to 69.0 ks after the BAT trigger. The data comprise 17 s in Windowed Timing (WT) mode with the remainder in Photon Counting (PC) mode. Using 1385 s of PC mode data and 2 UVOT images, we find an enhanced XRT position (using the XRT-UVOT alignment and matching UVOT field sources to the USNO-B1 catalogue): RA, Dec = 20.79619, +27.66024 which is equivalent to: RA (J2000): 01h 23m 11.09s Dec(J2000): +27d 39' 36.9" with an uncertainty of 1.8 arcsec (radius, 90% confidence). The light curve can be modelled with an initial power-law decay with an index of alpha=3.8 (+1.7, -0.7), followed by a break at T+360 s to an alpha of 0.58 (+0.09, -0.07). A spectrum formed from the PC mode data can be fitted with an absorbed power-law with a photon spectral index of 1.92 (+0.27, -0.24). The best-fitting absorption column is 1.1 (+0.8, -0.4) x 10^21 cm^-2, consistent with the Galactic value of 7.9 x 10^20 cm^-2 (Willingale et al. 2013). The counts to observed (unabsorbed) 0.3-10 keV flux conversion factor deduced from this spectrum is 3.5 x 10^-11 (4.3 x 10^-11) erg cm^-2 count^-1. A summary of the PC-mode spectrum is thus: Total column: 1.1 (+0.8, -0.4) x 10^21 cm^-2 Galactic foreground: 7.9 x 10^20 cm^-2 Excess significance: <1.6 sigma Photon index: 1.92 (+0.27, -0.24) The results of the XRT-team automatic analysis are available at http://www.swift.ac.uk/xrt_products/01000255. This circular is an official product of the Swift-XRT team.
GCN 28644 table
GRB_name GRB201014A
GCN_number 28644
Detection_method Swift-UVOT Other
Circular_text TITLE: GCN CIRCULAR NUMBER: 28644 SUBJECT: GRB 201014A: Swift/UVOT Upper Limits DATE: 20/10/16 04:29:10 GMT FROM: Sam LaPorte at PSU GRB 201014A: Swift/UVOT Upper Limits J. D. Gropp (PSU) and E. Ambrosi (INAF-IASFPA) report on behalf of the Swift/UVOT team: The Swift/UVOT began settled observations of the field of GRB 201014A 176 s after the BAT trigger (Ambrosi et al., GCN Circ. 28623) . No optical afterglow consistent with the XRT position (D'Elia et al., GCN Circ. 28626) is detected in the initial UVOT exposures. Preliminary 3-sigma upper limits using the UVOT photometric system (Breeveld et al. 2011, AIP Conf. Proc. 1358, 373) for the first finding chart (FC) exposure and subsequent exposures are: Filter T_start(s) T_stop(s) Exp(s) Mag b 3291 3483 38 >19.17 uvm2 7457 7657 196 >19.18 u 3035 7877 275 >19.82 v 3365 7452 235 >19.24 uvw1 3414 7862 216 >19.25 uvw2 3514 7248 216 >19.32 white 2876 7042 382 >21.14 The magnitudes in the table are not corrected for the Galactic extinction due to the reddening of E(B-V) = 0.05 in the direction of the burst (Schlegel et al. 1998). Virus-free. www.avast.com <#DAB4FAD8-2DD7-40BB-A1B8-4E2AA1F9FDF2>
GCN 28650 table
GRB_name GRB201014A
GCN_number 28650
Detection_method Other
redshift 4.5600
Circular_text TITLE: GCN CIRCULAR NUMBER: 28650 SUBJECT: GRB 201014A: Redshift from GTC/OSIRIS DATE: 20/10/16 11:04:06 GMT FROM: Antonio de Ugarte Postigo at IAA-CSIC A. de Ugarte Postigo (HETH/IAA-CSIC, DARK/NBI), D.A. Kann, M. Blazek, J.F. Agui Fernandez, C. Thoene (all HETH/IAA-CSIC), G. Gomez Velarde and A. Perez Romero (both GRANTECAN) report: We observed the afterglow of GRB 201014A (Ambrosi et al. GCN 28623; D’Elia et al. GCN 28626; Pozanenko et al. GCN 28628) with the 10.4m GTC telescope, at Roque de los Muchachos Observatory (La Palma, Spain) equipped with OSIRIS. The observation started on 16 October 2020 at 5:10 UT (30.36 hrs after the GRB onset) and consisted of 3x1200s with the R1000B grism, covering the range between 3700 and 7800 Å. The spectrum shows signal redwards of 5150 AA, consistent with the Lyman forest, Lyman alpha, SiII, SiIV, OI, and CII at a common redshift of 4.56, which we identify as the redshift of the GRB.
GCN 28654 table
GRB_name GRB201014A
GCN_number 28654
Detection_method Optical
Circular_text TITLE: GCN CIRCULAR NUMBER: 28654 SUBJECT: GRB 201014A: Lowell Discovery Telescope afterglow imaging DATE: 20/10/16 14:59:54 GMT FROM: Simone Dichiara at UMCP/NASA/GSFC S.Dichiara (UMD, NASA-GSFC), S.B. Cenko (NASA-GSFC), E. Troja (UMD, NASA-GSFC), P. Gatkine (Caltech), J.M. Durbak (UMD), A. Kutyrev (UMD, NASA-GSFC), S. Veilleux (UMD), report on behalf of a larger collaboration: We observed the field of the GRB 201014A (Ambrosi et al., GCN 28623) using the Large Monolithic Imager (LMI) on the 4.3m Lowell Discovery Telescope (LDT) at Happy Jack, AZ. Observations started on October 16, 07:08:10 UT (1.35 days after the Swift trigger) taking 4 exposures of 175 s each with SDSS i and SDSS r filters. Observations were taken at an airmass of about 1.01 and seeing of about 1.7". We detected the optical transient (Pozanenko et al., GCN 28628; de Ugarte Postigo et al, GCN 28650) inside the enhanced XRT position (D'Elia et al. GCN 28626) measuring the following AB magnitudes: i=22.75 +- 0.07 and r=24.30 +- 0.12. Magnitudes are calibrated against the SDSS catalog and not corrected for Galactic extinction. The r/i drop-out is consistent with the high-z measured from GTC (de Ugarte Postigo et al, GCN 28650). We thank the staff of the Lowell Discovery Telescope and Quanzhi Ye for assistance with these observations. [GCN OPS NOTE(18oct2020): Per author's request, the Title "GRB 201014A: Lowell Discovery Telescope upper limits" was changed to "GRB 201014A: Lowell Discovery Telescope afterglow imaging".]
GCN 28655 table
GRB_name GRB201014A
GCN_number 28655
Detection_method Optical
Circular_text TITLE: GCN CIRCULAR NUMBER: 28655 SUBJECT: GRB 201014A: Nanshan/NEXT optical observations DATE: 20/10/16 15:18:30 GMT FROM: Dong Xu at NAOC/CAS Z.P. Zhu (HUST/NAOC), X. Liu, S.Y. Fu, D. Xu (NAOC), X. Gao (Urumqi No.1 Senior High School), J.Z. Liu (XAO) report: We observed the field of GRB 201014A (Swift trigger =1000255, Ambrosi et al., GCN 28623) using the NEXT-0.6m optical telescope located at Nanshan, Xinjiang, China. Observations automatically started at 22:52:30 UT on 2020-10-14, i.e., 232 s after the BAT trigger, and 3x40s, 4x60s, 12x90s frames in the Sloan r-filter were obtained. The optical afterglow (Pozanenko et al., GCN 28628; de Ugarte Postigo et al, GCN 28650) inside the enhanced XRT position (D'Elia et al. GCN 28626) is weakly detected in our stacked image, with r = 20.9 +/- 0.3 at T-mid = 0.324 hr after the BAT trigger, calibrated with nearby Pan-STARRS stars.
GCN 28685 table
GRB_name GRB201014A
GCN_number 28685
Detection_method Optical
Circular_text TITLE: GCN CIRCULAR NUMBER: 28685 SUBJECT: GRB 201014A: MMT afterglow detection DATE: 20/10/19 14:17:38 GMT FROM: Tanmoy Laskar at U of Bath T. Laskar (University of Bath), K. Paterson, J. Rastinejad, C. D. Kilpatrick, and W. Fong (Northwestern) report on behalf of a larger collaboration: "We observed Swift GRB 201014A (Ambrosi et al., GCN 28623) with Binospec on the MMT 6.5-meter telescope at Mount Hopkins, Arizona. We obtained 10x120-sec imaging in the i' and z' bands beginning on 2020 October 17 at 08:55:10 UT and 09:31:56 UT, respectively. Within the XRT position (D'Elia et al., GCN 28626; Perri et al., GCN 28638), we detect the previously reported optical afterglow (Pozanenko et al., GCN 28628; Zhu et al., GCN 28655). Calibrated to SDSS, we measure i' = 23.3 +/- 0.1 mag and z' = 22.8 +/- 0.1 mag at a mid-time of 2.45 days since the burst. Magnitudes are in the AB system and are not corrected for Galactic extinction. We thank Skyler Self and Ben Weiner at the MMT for the rapid scheduling and execution of these observations.''
GCN 28689 table
GRB_name GRB201014A
GCN_number 28689
Detection_method Swift-BAT Det
Circular_text TITLE: GCN CIRCULAR NUMBER: 28689 SUBJECT: GRB 201014A: 3.6m DOT Optical Observations DATE: 20/10/19 15:01:21 GMT FROM: Amit Kumar at ARIES, India A. Kumar (ARIES), R. Gupta (ARIES), Dimple (ARIES), A. Ghosh (ARIES), A. Aryan (ARIES), B. Kumar (ARIES), N Panwar (ARIES), S. B. Pandey (ARIES), and K. Misra (ARIES) report: We observed the XRT localized GRB 201014A (Swift trigger =1000255, Ambrosi et al., GCN 28623; Perri et al., GCN 28638) using the 4Kx4K CCD Imager (Pandey et al. 2018, 2018BSRSL..87...42P) mounted at axial port of the 3.6m Devasthal Optical Telescope (DOT) of ARIES Nainital. The observations were carried out on 2020-10-15 in Bessel R-band (300s X 2 frames) from UT 21:22:35 to 21:32:59 (corresponding to 22.6 hours after the BAT trigger time). No new optical source was detected within the Swift XRT enhanced error circle (see also Pozanenko et al., GCN 28628; de Ugarte Postigo et al, GCN 28650, Zhu et al, GCN 28655). The aperture photometry on the stacked R-band image was performed and calibrated against the USNO-B1 nearby stars. The 3-sigma upper limit within the XRT error circle is as follows: T_start-T0 (hours), Start UT, End UT, Filter, 3-sigma upper limit ------------------------------------------------------------------------------------------------- 22.57, 2020-10-15 UT 21:22:35.8, 2020-10-15 UT 21:32:58.9, R, >22.5 mag The limiting magnitude is not corrected for Galactic extinction in the the direction of the GRB. 3.6m Devasthal Optical Telescope (DOT) is a recently commissioned facility in Northern Himalayan region of India (long:79 41 04E, lat:29 21 40N, alt:2540m) owned and operated by the Aryabhatta Research Institute of Observational Sciences (ARIES), Nainital (https://www.aries.res.in). Authors of this GCN circular thankfully acknowledge consistent support from the staff members to run and maintain the 3.6m DOT. This circular may be cited.
GCN 28699 table
GRB_name GRB201014A
GCN_number 28699
Detection_method Optical
Circular_text TITLE: GCN CIRCULAR NUMBER: 28699 SUBJECT: GRB 201014A: SAO RAS optical observations DATE: 20/10/20 13:32:15 GMT FROM: Moskvitin Alexander at SAO RAS A. S. Moskvitin, V. N. Aitov (SAO RAS) on behalf of GRB follow-up team report. We observed the field of GRB 201014A, Swift trigger 1000255 (Ambrosi et al., GCN 28623) with the 1-m telescope of SAO RAS, Zeiss-1000 + Multi-Mode Photometer-Polarimeter. We obtained 6 x 300 sec. images in Rc band on October 15, 21:11:44--21:43:50, t_mid - T0 = 0.9439 days since trigger. Inside the enhanced XRT circle (D’Elia et al., GCN #28626; Perri et al., GCN #28638) we marginally detected the GRB OT (Pozanenko et al., GCN #28628; de Ugarte Postigo et al., GCN #28650; Dichiara et al., GCN #28654; Zhu et al., GCN #28655) with the brightness of R = 24.0 +/- 0.3 (calibrated against the nearby SDSS stars, magnitudes converted with the Lupton 2005 equations). We also obtained 12 x 300 sec. images in Rc band on October 16, 20:55:16--21:59:23, t_mid - T0 = 1.9435 days since trigger. We did not detect OT down to the limiting magnitude of R_lim = 24.0.
GCN 28741 table
GRB_name GRB201014A
GCN_number 28741
Detection_method Other
Circular_text TITLE: GCN CIRCULAR NUMBER: 28741 SUBJECT: GRB 201014A: 2.0m HCT upper limit DATE: 20/10/22 10:03:44 GMT FROM: Brajesh Kumar at Indian Inst. of Astrophysics Brajesh Kumar (ARIES, Nainital), Anirban Dutta, G. C. Anupama, D. K. Sahu, Pramod Kumar (IIA, Bengaluru), Amit Kumar, Avinash Singh (ARIES, Nainital) We observed the field of GRB 201014A (Ambrosi et al., GCN 28623, D'Elia et al., GCN 28626) with the Himalaya Faint Object Spectrograph and Camera (HFOSC) mounted on the 2-m Himalayan Chandra Telescope (IAO, Hanle). Three frames (each 300 sec) of the GRB field were obtained in the Bessell R-band in the average sky conditions. Preliminary PSF photometry on the stacked image was performed and calibrated against USNO-B1 catalogue stars. We do not detect any OT candidate (Pozanenko et al., GCN 28628, de Ugarte Postigo et al, GCN 28650, Dichiara et al. 28654, Zhu et al, GCN 28655, Laskar et al. 28685, Kumar et al. 28689, Moskvitin et al. 28699) within the enhanced XRT position (Perri et al., GCN 28638). The upper limit in the stacked image is the following: DATE UT Filter Exposure(sec) Frames Upper limit (mag) 2020-10-15 15:55:29 R 300 3 21.7 We thank the staff at IAO and CREST for helping with the observations.