GRB130608A

This page lists all entries on GRB130608A in GRBweb

Summary IPN Swift GCN 14827 GCN 14829 GCN 14832 GCN 14833 GCN 14836 GCN 14838 GCN 14850 GCN 14861 GCN 14870

Summary table
Variable Value Source
T0 23:14:21 UTC GCN_circulars,Swift Det
ra 24.6111° Swift
decl 41.5030° Swift
pos_error 1.94e-04° Swift
T90 151.38 s Swift
T90_start 23:14:21 UTC Swift
fluence 9.00e-07 erg/cm² Swift
T100 151.38 s
GBM_located False
mjd 56451.968298611115 GCN_circulars,Swift Det
IPN table
GRB_name GRB130608A
ra 24.5792°
decl 41.5000°
pos_error 5.00e-02°
Swift table
GRB_name GRB130608A
t_trigger 23:14:21 UTC
ra 24.6111°
decl 41.5030°
pos_error 1.94e-04°
T90 151.38 s
fluence 9.00e-07 erg/cm²
GCN 14827 table
GRB_name GRB130608A
GCN_number 14827
Detection_method Swift Det
t_trigger 23:14:21 UTC
ra 24.5800°
decl 41.4940°
Circular_text TITLE: GCN CIRCULAR NUMBER: 14827 SUBJECT: GRB 130608A: Swift detection of a burst DATE: 13/06/08 23:27:48 GMT FROM: David Palmer at LANL H. A. Krimm (CRESST/GSFC/USRA), D. N. Burrows (PSU), J. R. Cummings (NASA/UMBC), N. Gehrels (NASA/GSFC), D. Malesani (DARK/NBI), F. E. Marshall (NASA/GSFC), A. Maselli (INAF-IASFPA), A. Melandri (INAF-OAB), D. M. Palmer (LANL) and T. N. Ukwatta (MSU) report on behalf of the Swift Team: At 23:14:21 UT, the Swift Burst Alert Telescope (BAT) triggered and located GRB 130608A (trigger=557771). Swift slewed immediately to the burst. The BAT on-board calculated location is RA, Dec 24.580, +41.494 which is RA(J2000) = 01h 38m 19s Dec(J2000) = +41d 29' 38" with an uncertainty of 3 arcmin (radius, 90% containment, including systematic uncertainty). The BAT light curve suggests a broad weak peak from T-20 to T+40 s. The maximum count rate was ~500 counts/sec (15-350 keV), at ~0 sec after the trigger. The XRT began observing the field at 23:17:02.9 UT, 161.6 seconds after the BAT trigger. Using promptly downlinked data we find a bright, uncatalogued X-ray source with an enhanced position: RA, Dec 24.6087, 41.5027 which is equivalent to: RA(J2000) = 01h 38m 26.08s Dec(J2000) = +41d 30' 09.7" with an uncertainty of 2.7 arcseconds (radius, 90% containment). This location is 83 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. A power-law fit to a spectrum formed from promptly downlinked event data gives a column density in excess of the Galactic value (6.62 x 10^20 cm^-2, Kalberla et al. 2005), with an excess column of 6.2 (+5.87/-4.48) x 10^21 cm^-2 (90% confidence). The initial flux in the 2.5 s image was 4.77e-10 erg cm^-2 s^-1 (0.2-10 keV). UVOT took a finding chart exposure of 150 seconds with the White filter starting 168 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 19.6 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 mag. No correction has been made for the expected extinction corresponding to E(B-V) of 0.06. Burst Advocate for this burst is H. A. Krimm (krimm 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 14829 table
GRB_name GRB130608A
GCN_number 14829
Detection_method Other
Circular_text TITLE: GCN CIRCULAR NUMBER: 14829 SUBJECT: GRB130608A: BOOTES-2/TELMA upper limits DATE: 13/06/09 04:16:18 GMT FROM: Juan Carlos Tello at IAA-CSIC J.C.Tello, M.Jelinek, (IAA-CSIC) J.Gorosabel (UPV-EY, IAA-CSIC), A.J.Castro-Tirado, R. Sanchez-Ramirez (IAA-CSIC), on behalf of a larger collaboration report: We observed the field of GRB130608A (Krimm et al. GCNC 14827) with the BOOTES-2/TELMA telescope located in Malaga, Spain, starting at 02h31m UT (136 minutes after the burst, when the source rose above the local horizon). No new source is visible within the XRT error circle. During a first epoch we combined 11 images with an unfiltered exposure of 60 seconds each that begun at 02h31m45s (136 minutes after the burst) and ended at 02h44m21s (mean time 142 minutes after the burst), and a limiting magnitude of 18.8 was obtained when compared to the values of R2Mag of the field stars as stated in the USNO-B1 catalog. During a 2nd epoch we combined 22 images with an unfiltered exposure of 60 seconds each that begun at 3h00m11s (165 minutes after the burst) and ended at 3h22m08s (mean time 176 minutes after the burst), and we obtained a limiting magnitude of 19.5 when compared to the values of R2Mag of the field stars as stated in the USNO-B1 catalog.
GCN 14832 table
GRB_name GRB130608A
GCN_number 14832
Detection_method Swift-XRT Det
ra 24.6111°
decl 41.5029°
Circular_text TITLE: GCN CIRCULAR NUMBER: 14832 SUBJECT: GRB 130608A: Enhanced Swift-XRT position DATE: 13/06/09 11:20:08 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 952 s of XRT Photon Counting mode data and 2 UVOT images for GRB 130608A, 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 = 24.61111, +41.50289 which is equivalent to: RA (J2000): 01h 38m 26.67s Dec (J2000): +41d 30' 10.4" with an uncertainty of 1.7 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 14833 table
GRB_name GRB130608A
GCN_number 14833
Detection_method Swift-BAT Det
ra 24.5940°
decl 41.4850°
Circular_text TITLE: GCN CIRCULAR NUMBER: 14833 SUBJECT: GRB 130608A: Swift-BAT refined analysis DATE: 13/06/09 12:34:01 GMT FROM: Scott Barthelmy at NASA/GSFC H. A. Krimm (GSFC/USRA), S. D. Barthelmy (GSFC), W. H. Baumgartner (GSFC/UMBC), J. R. Cummings (GSFC/UMBC), N. Gehrels (GSFC), A. Y. Lien (NASA/GSFC/ORAU), 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-60 to T+243 sec from the recent telemetry downlink, we report further analysis of BAT GRB 130608A (trigger #557771) (Krimm, et al., GCN Circ. 14827). The BAT ground-calculated position is RA, Dec = 24.594, 41.485 deg, which is RA(J2000) = 01h 38m 22.5s Dec(J2000) = +41d 29' 05.0" with an uncertainty of 2.8 arcmin, (radius, sys+stat, 90% containment). The partial coding was 45%. The mask-weighted light curve shows a broad peak starting at ~T-25 sec, peaking at ~T+5 sec, and ending at ~T+50 sec. T90 (15-350 keV) is 44.4 +- 8.0 sec (estimated error including systematics). The time-averaged spectrum from T-25.56 to T+24.18 sec is best fit by a simple power-law model. The power law index of the time-averaged spectrum is 3.21 +- 0.34. The fluence in the 15-150 keV band is 6.4 +- 1.0 x 10^-7 erg/cm2. The 1-sec peak photon flux measured from T+19.06 sec in the 15-150 keV band is 0.6 +- 0.3 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/557771/BA/
GCN 14836 table
GRB_name GRB130608A
GCN_number 14836
Detection_method Swift-XRT Other
Circular_text TITLE: GCN CIRCULAR NUMBER: 14836 SUBJECT: GRB 130608A: RATIR Optical and NIR Observations DATE: 13/06/09 16:26:17 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), Chris Klein (UCB), Ori Fox (UCB) J. Xavier Prochaska (UCSC), Josh Bloom (UCB), Antonino Cucchiara (UCSC), Eleonora Troja (GSFC), Owen Littlejohns (ASU), Enrico Ramirez-Ruiz (UCSC), Jos A. de Diego (UNAM), Leonid Georgiev (UNAM), Jess Gonzlez (UNAM), Carlos Romn-Ziga (UNAM), Neil Gehrels (GSFC), and Harvey Moseley (GSFC) report: We observed the field of GRB 130608A (Krimm, et al., GCN 14827) with the Reionization and Transients Infrared Camera (RATIR; www.ratir.org) on the 1.5m Harold Johnson Telescope at the Observatorio Astronmico Nacional on Sierra San Pedro Mrtir in morning twilight from 2013/06 9.46 to 2013/06 9.47 UTC (11.70 to 12.00 hours after the BAT trigger), obtaining a total of 0.20 hours exposure in the r' and i' bands and 0.08 hours exposure in the Z, Y, J, and H bands. For a source within the Swift-XRT error circle (Beardmore, et al., GCN 14832), in comparison with the RATIR zero points and 2MASS, we obtain the following upper limits (3-sigma): r' > 21.90 i' > 22.27 Z > 21.21 Y > 20.64 J > 20.12 H > 19.80 These magnitudes are in the AB system and not corrected for Galactic extinction in the direction of the GRB. We thank the staff of the Observatorio Astronmico Nacional in San Pedro Mrtir.
GCN 14838 table
GRB_name GRB130608A
GCN_number 14838
Detection_method Swift-XRT Other
Circular_text TITLE: GCN CIRCULAR NUMBER: 14838 SUBJECT: GRB 130608A: Swift-XRT refined Analysis DATE: 13/06/09 17:28:07 GMT FROM: Phil Evans at U of Leicester K.L. Page (U. Leicester), C. Pagani (U. Leicester), V. Mangano (INAF-IASFPA), A. Melandri (INAF-OAB), B. Sbarufatti (INAF-OAB/PSU), M.C. Stroh (PSU), D.N. Burrows (PSU), J.A. Kennea (PSU), A.P. Beardmore (U. Leicester) and H.A. Krimm report on behalf of the Swift-XRT team: We have analysed 9.4 ks of XRT data for GRB 130608A (Krimm et al. GCN Circ. 14827), from 147 s to 47.3 ks after the BAT trigger. The data comprise 98 s in Windowed Timing (WT) mode (the first 10 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 Beardmore et al. (GCN. Circ 14832). The light curve can be modelled with an initial power-law decay with an index of alpha=4.33 (+0.26, -0.23), followed by a break at T+653 s to an alpha of 0.40 (+0.11, -0.12). A spectrum formed from the WT mode data can be fitted with an absorbed power-law with a photon spectral index of 3.23 (+0.27, -0.25). The best-fitting absorption column is 1.0 (+0.4, -0.3) x 10^21 cm^-2, in excess of the Galactic value of 6.6 x 10^20 cm^-2 (Kalberla et al. 2005). The PC mode spectrum has a photon index of 2.40 (+0.36, -0.11) and a best-fitting absorption column consistent with the Galactic value. The counts to observed (unabsorbed) 0.3-10 keV flux conversion factor deduced from this spectrum is 3.0 x 10^-11 (4.0 x 10^-11) erg cm^-2 count^-1. A summary of the PC-mode spectrum is thus: Total column: 0 (+4.9, -0) x 10^20 cm^-2 Galactic foreground: 6.6 x 10^20 cm^-2 Excess significance: <1.6 sigma Photon index: 2.40 (+0.36, -0.11) If the light curve continues to decay with a power-law decay index of 0.40, the count rate at T+24 hours will be 7.3 x 10^-3 count s^-1, corresponding to an observed (unabsorbed) 0.3-10 keV flux of 2.2 x 10^-13 (3.0 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/00557771. This circular is an official product of the Swift-XRT team.
GCN 14850 table
GRB_name GRB130608A
GCN_number 14850
Detection_method Swift-BAT Det
ra 24.5970°
decl 41.4920°
Circular_text TITLE: GCN CIRCULAR NUMBER: 14850 SUBJECT: GRB 130608A: Further Swift-BAT analysis DATE: 13/06/10 14:16:12 GMT FROM: Hans Krimm at NASA-GSFC H. A. Krimm (GSFC/USRA)for the Swift-BAT team: Using the full data set from T-239 to T+963 sec,we report further analysis of BAT GRB 130608A (trigger #557771)(Krimm, et al., GCN Circ. 14827; Krimm, et al., GCN Circ. 14833). Information in this Circular supersedes that presented in Krimm, et al., GCN Circ. 14833. The BAT ground-calculated position isrefined to RA, Dec = 24.597, 41.492 deg which is RA(J2000) = 01h 38m 23.3s Dec(J2000) = +41d 29' 30.5" with an uncertainty of 2.5 arcmin, (radius, sys+stat, 90% containment). The partial coding was 45%. The initial Swift-BAT circular reported a broad peak starting at ~T-25 sec, peaking at ~T+5 sec, and ending at ~T+50 sec. With further data available we see that the mask-weighted light curve contains precursor emission from~T-150 sec to ~T-90. BAT did not trigger on this precursor because it occurred during a slew to the field containing the burst. T90 (15-350 keV) is 151.38 +- 10.84 sec (estimated error including systematics). The time-averaged spectrum from T-134.19 to T+22.20 sec is best fit by a simple power-law model. The power law index of the time-averaged spectrum is 2.71 +- 0.41. The fluence in the 15-150 keV band is 9.0 +- 1.9 x 10^-07 erg/cm2. The 1-sec peak photon flux measured from T+19.06 sec in the 15-150 keV band is 0.6 +- 0.3 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/557771/BA/
GCN 14861 table
GRB_name GRB130608A
GCN_number 14861
Detection_method Optical
Circular_text TITLE: GCN CIRCULAR NUMBER: 14861 SUBJECT: GRB 130608A: ISON-Kislovodsk optical upper limit DATE: 13/06/10 20:01:43 GMT FROM: Alexei Pozanenko at IKI, Moscow A. Volnova (IKI), V. Linkov (ISON), M.Suvorov (ISON), V. Nevskiy (ISON), D. Ivanov (ISON), I. Molotov (KIAM), A. Pozanenko (IKI), report on behalf of larger collaboration: We observed the field of GRB 130608A (Krimm et al., GCN 14827) with SANTEL-400AN (0.4-m f/3) telescope of ISON-Kislovodsk observatory. Observations started on Jun. 09 (UT) 00:01:42. We obtained several unfiltered images of 60 s exposure. We do not detect any source within enhanced XRT error circle (Beardmore et al., GCN 14832). Preliminary photometry of combined image is based on USNO-B1.0 (R2) nearby stars: T_start, T0+, Exp, Filter, UL (3 sigma) (UT) mid (d) (s) 2013-06-09T00:01:42 0.04170 960 none >18.1
GCN 14870 table
GRB_name GRB130608A
GCN_number 14870
Detection_method Swift-UVOT Other
Circular_text TITLE: GCN CIRCULAR NUMBER: 14870 SUBJECT: GRB 130608A: Swift/UVOT Upper Limits DATE: 13/06/11 14:55:09 GMT FROM: Stephen Holland at STScI S. T. Holland (STScI) and Hans Krimm (CRESST/GSFC/USRA) report on behalf of the Swift/UVOT team: The Swift/UVOT began settled observations of the field of GRB 130608A starting 168 s after the BAT trigger (Krimm et al. 2013, GCNC 14827). We do not detect any new source consistent with the UVOT-enhanced XRT position (Beardmore 2013, GCNC 14832) in any of the UVOT exposures. Preliminary 3-sigma upper limits using the UVOT photometric system (Breeveld et al. 2011, AIP Conf. Proc. 1358, 373) for the finding chart (FC) exposures and initial summed exposures are presented below. Filter TSTART TSTOP Exposure Mag ------------------------------------------------- white (FC) 169 318 147 >21.0 607 626 19 >19.6 u (FC) 327 576 246 >20.1 731 750 19 >18.4 ------------------------------------------------- v 657 12,041 1154 >20.6 b 583 6742 452 >20.8 u 4899 6536 393 >20.5 uvw1 706 6331 432 >20.6 uvm2 681 12,759 1134 >21.3 uvw2 632 11,127 1199 >21.5 white 858 6946 560 >21.5 ------------------------------------------------- The quoted upper limits have not been corrected for the expected extinction due to the Galactic reddening along the line of sight to this burst of E(B-V) = 0.05 mag (Schlafly et al. 2011, ApJS, 737, 103).