GRB130701A

This page lists all entries on GRB130701A in GRBweb

Summary IPN Swift GCN 14953 GCN 14954 GCN 14955 GCN 14956 GCN 14957 GCN 14958 GCN 14959 GCN 14960 GCN 14961 GCN 14963

Summary table
Variable Value Source
T0 4:17:42.161 UTC GCN_circulars,Konus-Wind Det
ra 357.2295° Swift
decl 36.1004° Swift
pos_error 1.94e-04° Swift
T90 4.38 s Swift
T90_start 4:17:43 UTC Swift
fluence 4.40e-06 erg/cm² Swift
redshift 1.1550 GCN_circulars,Other
T100 5.219 s
GBM_located False
mjd 56474.17896019676 GCN_circulars,Konus-Wind Det
IPN table
GRB_name GRB130701A
ra 357.2167°
decl 36.1000°
pos_error 5.00e-02°
redshift 1.1550
Swift table
GRB_name GRB130701A
t_trigger 4:17:43 UTC
ra 357.2295°
decl 36.1004°
pos_error 1.94e-04°
T90 4.38 s
fluence 4.40e-06 erg/cm²
redshift 1.1550
GCN 14953 table
GRB_name GRB130701A
GCN_number 14953
Detection_method Swift Det
t_trigger 4:17:43 UTC
ra 357.2160°
decl 36.0990°
Circular_text TITLE: GCN CIRCULAR NUMBER: 14953 SUBJECT: GRB 130701A: Swift detection of a burst DATE: 13/07/01 04:31:19 GMT FROM: David Palmer at LANL N. P. M. Kuin (UCL-MSSL), D. Malesani (DARK/NBI), K. L. Page (U Leicester), D. M. Palmer (LANL), T. Sakamoto (AGU), M. Stamatikos (OSU/NASA/GSFC) and T. N. Ukwatta (MSU) report on behalf of the Swift Team: At 04:17:43 UT, the Swift Burst Alert Telescope (BAT) triggered and located GRB 130701A (trigger=559482). Swift slewed immediately to the burst. The BAT on-board calculated location is RA, Dec 357.216, +36.099 which is RA(J2000) = 23h 48m 52s Dec(J2000) = +36d 05' 58" with an uncertainty of 3 arcmin (radius, 90% containment, including systematic uncertainty). The BAT light curve showed a double-peaked structure with a duration of about 8 sec. The peak count rate was ~10304 counts/sec (15-350 keV), at ~1 sec after the trigger. The XRT began observing the field at 04:19:09.1 UT, 85.5 seconds after the BAT trigger. XRT found a bright, uncatalogued X-ray source located at RA, Dec 357.2287, 36.0997 which is equivalent to: RA(J2000) = +23h 48m 54.89s Dec(J2000) = +36d 05' 58.9" with an uncertainty of 5.3 arcseconds (radius, 90% containment). This location is 37 arcseconds from the BAT onboard position, within the BAT error circle. No event data are yet available to determine the column density using X-ray spectroscopy. UVOT took a finding chart exposure of 250 seconds with the U filter starting 150 seconds after the BAT trigger. No credible afterglow candidate has been found in the initial data products. The 2.7'x2.7' sub-image covers 100% of the XRT error circle. The typical 3-sigma upper limit has been about 19.2 mag. The 8'x8' region for the list of sources generated on-board covers 100% of the XRT error circle. The list of sources is typically complete to about 18.0 mag. No correction has been made for the expected extinction corresponding to E(B-V) of 0.09. Burst Advocate for this burst is N. P. M. Kuin (n.kuin AT ucl.ac.uk). 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 14954 table
GRB_name GRB130701A
GCN_number 14954
Detection_method Optical
ra 357.2295°
decl 36.1004°
Circular_text TITLE: GCN CIRCULAR NUMBER: 14954 SUBJECT: GRB 130701A: optical afterglow from the NOT DATE: 13/07/01 06:07:27 GMT FROM: Daniele Malesani at Dark Cosmology Centre, Niels Bohr Inst G. Leloudas (OKC, Stockholm and DARK/NBI), N. R. Tanvir (Univ. Leicester), D. Xu (DARK/NBI), D. Malesani (DARK/NBI), P. Jakobsson (Univ. Iceland), O. Smirnova (NOT and Univ. Latvia), M. G. Pedersen (Univ. Aarhus), report: We observed the field of GRB 130701A (Kuin et al., GCN 14953) with the NOT equipped with the ALFOSC camera. Observations were carried out in the R band and started on 2013 Jul 1.198 UT (28 min after the GRB). We detect a new object not visible in the DSS and SDSS surveys, at coordinates: RA(J2000) = 23:48:55.09 Dec(J2000) = +36:06:01.4 The object had a magnitude R = 17.55 at 04:49 UT, calibrated against SDSS stars converted to Johnson R. The source decayed by 0.25 mag by 04:58 UT, hence confirming it is the afterglow of GRB 130701A.
GCN 14955 table
GRB_name GRB130701A
GCN_number 14955
Detection_method Swift-XRT Det
ra 357.2294°
decl 36.1006°
Circular_text TITLE: GCN CIRCULAR NUMBER: 14955 SUBJECT: GRB 130701A: Enhanced Swift-XRT position DATE: 13/07/01 10:47:54 GMT FROM: Phil Evans at U of Leicester A.P. Beardmore, P.A. Evans, M.R. Goad and J.P. Osborne (U. Leicester) report on behalf of the Swift-XRT team. Using 687 s of XRT Photon Counting mode data and 2 UVOT images for GRB 130701A, 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 = 357.22942, +36.10058 which is equivalent to: RA (J2000): 23h 48m 55.06s Dec (J2000): +36d 06' 02.1" with an uncertainty of 2.0 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 14956 table
GRB_name GRB130701A
GCN_number 14956
Detection_method Other
redshift 1.1550
Circular_text TITLE: GCN CIRCULAR NUMBER: 14956 SUBJECT: GRB 130701A: VLT/X-shooter redshift DATE: 13/07/01 12:47:53 GMT FROM: Valerio D'Elia at ASDC D. Xu (DARK/NBI), A. de Ugarte Postigo (IAA-CSIC, DARK/NBI), D. Malesani (DARK/NBI), P. Vreeswijk (Weizmann), V. D'Elia (INAF-OAR, ASI-ASDC), J. P. U. Fynbo (DARK/NBI), B. Milvang-Jensen (DARK/NBI), H. Flores (GEPI/Obs. de Paris), O. Hartoog (Amsterdam), P. Goldoni (APC, CEA/Irfu), L. Kaper (Amsterdam), S. D. Vergani (CNRS/GEPI) We observed the afterglow of GRB 130701A (Kuin et al. GCN 14953, Leloudas et al. GCN 14954) with VLT/X-shooter, beginning at 2013-07-01 09:45 UT, about 5.5 hours after the burst. We obtained 2 spectra of 600s each, covering the wavelength range 3000-21000A. From the acquisition image (Jul 1.404 UT, 5.40 hr after the GRB) we obtain a magnitude of R = 19.9 using the same calibration as in Leloudas et al. (GCN 14954). Preliminary analysis of the spectrum reveals absorption lines of FeII 2344, 2374, 2382, MgII 2796, 2803, MgI 2852, CaII 3934, 3969 at a common redshift of z=1.155. We propose this to be the redshift of the GRB. We thank the staff at Paranal, particularly Jonathan Smoker and Nestor Jimenez, for obtaining these observations. [GCN OPS NOTE(01jul13) Per A.Breeveld's observation, the GRB name in the Subject-line was corrected.]
GCN 14957 table
GRB_name GRB130701A
GCN_number 14957
Detection_method Swift-UVOT Det
Circular_text TITLE: GCN CIRCULAR NUMBER: 14957 SUBJECT: GRB 130701A: Swift/UVOT Detection DATE: 13/07/01 15:06:08 GMT FROM: Alice Breeveld at MSSL-UCL A. A. Breeveld (MSSL-UCL) and N. P. M. Kuin (UCL-MSSL) report on behalf of the Swift/UVOT team: The Swift/UVOT began settled observations of the field of GRB 130701A with the u filter 151 s after the BAT trigger (Kuin et al., GCN Circ. 14953). A source consistent with the enhanced XRT position (Beardmore et al., GCN Circ. 14955) and NOT position (Leloudas et al., GCN Circ. 14954) is detected in the initial UVOT exposures. There is a faint USNO-B1 source 2.16" away (USNO-B1 1261-054544, with B2 mag of 21.10) which perhaps could be the host galaxy for the GRB. Preliminary detections using the UVOT photometric system (Breeveld et al. 2011, AIP Conf. Proc. 1358, 373) for the early exposures are: Filter T_start(s) T_stop(s) Exp(s) Mag u_FC 151 400 246 15.52 0.1 v 5950 6150 197 19.04 0.2 b 5538 5737 197 19.66 0.2 w2 5744 5944 197 20.07 0.4 The magnitudes in the table are not corrected for the Galactic extinction due to the reddening of E(B-V) = 0.09 in the direction of the burst (Schlegel et al. 1998).
GCN 14958 table
GRB_name GRB130701A
GCN_number 14958
Detection_method Konus-Wind Det
t_trigger 4:17:42.161 UTC
Circular_text TITLE: GCN CIRCULAR NUMBER: 14958 SUBJECT: Konus-Wind observation of GRB 130701A DATE: 13/07/01 16:18:57 GMT FROM: Dmitry Frederiks at Ioffe Institute S. Golenetskii, R.Aptekar, D. Frederiks, V. Pal'shin, P. Oleynik, M. Ulanov, D. Svinkin, and T. Cline, on behalf of the Konus-Wind team, report: The long-duration, soft-spectrum GRB 130701A (Swift-BAT trigger 559482: Kuin, et al., GCN 14953) triggered Konus-Wind at T0=15462.161 s UT (04:17:42.161) The light curve shows a multi-peaked pulse from ~T0-0.5 s to ~T0+5 s. The emission is seen up to 0.5 MeV. The Konus-Wind light curve of this GRB is available at http://www.ioffe.ru/LEA/GRBs/GRB130701_T15462/ As observed by Konus-Wind, the burst had a fluence of (5.8 0.2)x10-6 erg/cm2, and a 64-ms peak flux, measured from T0+0.896 s, of (4.3 0.4)x10-6 erg/cm2/s (both in the 20 keV - 10 MeV energy range). The time-integrated spectrum (measured from T0 to T0+8.448 s) is best fit in the 20 keV - 1.2 MeV range by the cutoff power law with the following model parameters: the photon index alpha = -1.1 0.1, the peak energy Ep = 89 4 keV, chi2 = 55.1/60 dof. Assuming z=1.155 (Xu, et al., GCN 14956), and a standard cosmology model with H_0 = 70 km/s/Mpc, Omega_M = 0.27, and Omega_Lambda = 0.73, we estimate the following rest-frame parameters of the burst: the isotropic energy release E_iso ~ 2.1x10^52 erg, the peak luminosity (L_iso)_max ~ 3.3x10^52 erg/s, and the rest-frame peak energy Ep,i ~ 190 keV All the quoted results are preliminary.
GCN 14959 table
GRB_name GRB130701A
GCN_number 14959
Detection_method Swift-BAT Det
ra 357.2240°
decl 36.1000°
Circular_text TITLE: GCN CIRCULAR NUMBER: 14959 SUBJECT: GRB 130701A, Swift-BAT refined analysis DATE: 13/07/01 17:04:26 GMT FROM: Tilan Ukwatta at MSU T. Sakamoto (AGU), S. D. Barthelmy (GSFC), W. H. Baumgartner (GSFC/UMBC), J. R. Cummings (GSFC/UMBC), E. E. Fenimore (LANL), N. Gehrels (GSFC), H. A. Krimm (GSFC/USRA), N. P. M. Kuin (UCL-MSSL), A. Y. Lien (NASA/GSFC/ORAU), C. B. Markwardt (GSFC), D. M. Palmer (LANL), G. Sato (ISAS), 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+349 sec from the recent telemetry downlink, we report further analysis of BAT GRB 130701A (trigger #559482) (Kuin, et al., GCN Circ. 14953). The BAT ground-calculated position is RA, Dec = 357.224, 36.100 deg which is RA(J2000) = 23h 48m 53.7s Dec(J2000) = +36d 05' 58.4" with an uncertainty of 1.0 arcmin, (radius, sys+stat, 90% containment). The partial coding was 28%. BAT mask-weighted light curve shows overlapping two-peak structure starting from T-1 sec with first peak around T+1 sec and second peak around T+3 sec. The episode ends around T+5 sec. T90 (15-350 keV) is 4.38 +- 0.25 sec (estimated error including systematics). The time-averaged spectrum from T-1.14 to T+5.35 sec is best fit by a power law with an exponential cutoff. This fit gives a photon index 0.90 +- 0.21, and Epeak of 89.2 +- 12.4 keV (chi squared 40.06 for 56 d.o.f.). For this model the total fluence in the 15-150 keV band is 4.4 +- 0.1 x 10^-06 erg/cm2 and the 1-sec peak flux measured from T+0.06 sec in the 15-150 keV band is 17.1 +- 0.7 ph/cm2/sec. A fit to a simple power law gives a photon index of 1.58 +- 0.05 (chi squared 76.39 for 57 d.o.f.). 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/559482/BA/
GCN 14960 table
GRB_name GRB130701A
GCN_number 14960
Detection_method Other
Circular_text TITLE: GCN CIRCULAR NUMBER: 14960 SUBJECT: GRB 130701A: P60 Observations DATE: 13/07/01 19:14:21 GMT FROM: S. Bradley Cenko at Caltech S. B. Cenko (NASA/GSFC) and D. A. Perley (Caltech) report on behalf of a larger collaboration: We have observed the location of the Swift GRB130701A (Kuin et al., GCN 14953) with the robotic Palomar 60 inch telescope. Observations were obtained in non-photometric conditions in the r', i', and z' filters beginning at 06:52 UT on 2013 July 1 (2.58 hr after the Swift trigger). Using nearby point sources from SDSS for photometric calibration, we measure afterglow magnitudes of r' = 19.57 +/- 0.12 and i' = 19.36 +/- 0.10 at approximately this time. Compared with the earlier detection from the NOT (Leloudas et al., GCN 14954), this implies a power-law decay index of alpha ~ 1.0.
GCN 14961 table
GRB_name GRB130701A
GCN_number 14961
Detection_method Swift-XRT Other
Circular_text TITLE: GCN CIRCULAR NUMBER: 14961 SUBJECT: GRB 130701A: Swift-XRT refined Analysis DATE: 13/07/01 19:31:03 GMT FROM: Phil Evans at U of Leicester M.C. Stroh (PSU), D.N. Burrows (PSU), K.L. Page (U. Leicester), C. Pagani (U. Leicester), A.P. Beardmore (U. Leicester), A. Maselli (INAF-IASFPA), V. Mangano (INAF-IASFPA), A. Melandri (INAF-OAB), J.A. Kennea (PSU) and N.P.M. Kuin report on behalf of the Swift-XRT team: We have analysed 7.6 ks of XRT data for GRB 130701A (Kuin et al. GCN Circ. 14953), from 91 s to 36.5 ks after the BAT trigger. The data comprise 214 s in Windowed Timing (WT) mode with the remainder in Photon Counting (PC) mode. The enhanced XRT position for this burst was given by Beardmore et al. (GCN. Circ 14955). The light curve can be modelled with an initial power-law decay with an index of alpha=1.02 (+0.03, -0.06), followed by a break at T+2249 s to an alpha of 1.38 (+0.10, -0.08). A spectrum formed from the WT mode data can be fitted with an absorbed power-law with a photon spectral index of 2.19 (+/-0.10). The best-fitting absorption column is 1.29 (+0.22, -0.20) x 10^21 cm^-2, in excess of the Galactic value of 6.9 x 10^20 cm^-2 (Kalberla et al. 2005). The PC mode spectrum has a photon index of 1.97 (+0.16, -0.15) and a best-fitting absorption column of 1.3 (+/-0.4) x 10^21 cm^-2. The counts to observed (unabsorbed) 0.3-10 keV flux conversion factor deduced from this spectrum is 3.8 x 10^-11 (5.0 x 10^-11) erg cm^-2 count^-1. A summary of the PC-mode spectrum is thus: Total column: 1.3 (+/-0.4) x 10^21 cm^-2 Galactic foreground: 6.9 x 10^20 cm^-2 Excess significance: 2.8 sigma Photon index: 1.97 (+0.16, -0.15) If the light curve continues to decay with a power-law decay index of 1.38, the count rate at T+24 hours will be 7.5 x 10^-3 count s^-1, corresponding to an observed (unabsorbed) 0.3-10 keV flux of 2.8 x 10^-13 (3.8 x 10^-13) erg cm^-2 s^-1. The results of the XRT-team automatic analysis are available at http://www.swift.ac.uk/xrt_products/00559482. This circular is an official product of the Swift-XRT team.
GCN 14963 table
GRB_name GRB130701A
GCN_number 14963
Detection_method MITSuME
Circular_text TITLE: GCN CIRCULAR NUMBER: 14963 SUBJECT: GRB 130701A: MITSuME Akeno Optical observation DATE: 13/07/02 11:43:41 GMT FROM: Taketoshi Yoshii at Tokyo Tech T. Yoshii, K. Ito, Y. Saito, Y. Yano, R. Usui, Y. Tachibana, S. Kurita, Y. Yatsu, and N. Kawai (Tokyo Tech) report on behalf of the MITSuME collaboration: We observed the field of GRB 130701A (N. P. M. Kuin et al., GCNC 14953) with the optical three color (g, Rc, and Ic) CCD cameras attached to the MITSuME 50 cm telescope of Akeno Observatory, Yamanashi, Japan. The observation started on 2013-07-01 14:33:09 UT ( ~10.3 h after the burst). And we could not find any new point source within the XRT error circle (N. P. M. Kuin et al., GCNC 14953) in all the three bands. The results of photometry (3 sigma upper limits) are listed below. We used GSC2.3 catalog for flux calibration. band T0+[hour] MID-UT T-EXP[sec] magnitude -------------------------------------------------------------------------------------------- g' ~13.0 17:19:49 1680 >19.2 Rc ~13.1 17:24:36 2880 >18.9 Ic ~13.0 17:17:28 1320 >18.0 -------------------------------------------------------------------------------------------- T0+ : Elapsed time after the burst [hour] T-EXP: Total Exposure time [sec]