Gamma-ray Burst 140607A

(All information courtesy of the instrument teams.)

Previous IAU Circulars

• none

• GCN/BACODINE POSITION NOTICE
  

  TITLE:           GCN/SWIFT NOTICE
  NOTICE_DATE:     Sat 07 Jun 14 17:14:49 UT
  NOTICE_TYPE:     Swift-BAT GRB Position
  TRIGGER_NUM:     601051,   Seg_Num: 0
  GRB_RA:           86.380d {+05h 45m 31s} (J2000),
                    86.592d {+05h 46m 22s} (current),
                    85.644d {+05h 42m 35s} (1950)
  GRB_DEC:         +18.917d {+18d 55' 00"} (J2000),
                   +18.922d {+18d 55' 18"} (current),
                   +18.897d {+18d 53' 51"} (1950)
  GRB_ERROR:       3.00 [arcmin radius, statistical only]
  GRB_INTEN:       0 [cnts]    Image_Peak=905 [image_cnts]
  TRIGGER_DUR:     64.000 [sec] 
  TRIGGER_INDEX:   20000     E_range: 15-50 keV
  BKG_INTEN:       0 [cnts]
  BKG_TIME:        0.00 SOD {00:00:00.00} UT
  BKG_DUR:         0 [sec]
  GRB_DATE:        16815 TJD;   158 DOY;   14/06/07
  GRB_TIME:        62011.89 SOD {17:13:31.89} UT
  GRB_PHI:         -85.20 [deg]
  GRB_THETA:        37.26 [deg]
  SOLN_STATUS:     0x13
  RATE_SIGNIF:     0.00 [sigma]
  IMAGE_SIGNIF:    7.87 [sigma]
  MERIT_PARAMS:     +1  +0  +0  +6  +1  -2 -100  +1 -98  +0 
  SUN_POSTN:        75.75d {+05h 03m 00s}  +22.79d {+22d 47' 25"}
  SUN_DIST:         10.84 [deg]   Sun_angle= -0.7 [hr] (East of Sun)
  MOON_POSTN:      186.47d {+12h 25m 53s}   -4.65d {-04d 39' 12"}
  MOON_DIST:       100.84 [deg]
  MOON_ILLUM:      68 [%]
  GAL_COORDS:      188.56, -5.22 [deg] galactic lon,lat of the burst (or transient)
  ECL_COORDS:       86.57, -4.48 [deg] ecliptic lon,lat of the burst (or transient)
  COMMENTS:        SWIFT-BAT GRB Coordinates.  
  COMMENTS:        This is an image trigger.  (The RATE_SIGNIF & BKG_{INTEN, TIME, DUR} are undefined.)  
  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 = 15.85,-19.05 [deg].  
  

• red DSS finding chart ps-file
  
  
• GCN Circular #16364
  V. Mangano (PSU), S. D. Barthelmy (GSFC), W. H. Baumgartner (GSFC/UMBC), S. B. Cenko (GSFC), C. B. Markwardt (NASA/GSFC), D. M. Palmer (LANL) and T. N. Ukwatta (MSU) report on behalf of the Swift Team:
  At 17:13:31 UT, the Swift Burst Alert Telescope (BAT) triggered on GRB 140607A, (trigger=601051). Swift did not slew due to the Sun constraint. The BAT on-board calculated location is RA, Dec 86.380, +18.917, which is

     RA(J2000)  = +05h 45m 31s
     Dec(J2000) = +18d 55' 00"
  

  with an uncertainty of 3 arcmin (radius, 90% containment, including systematic uncertainty). As is typical for image triggers the real-time BAT light curve shows nothing significant. However, the image significance of 7.87 sigma gives us confidence that this is a real event even in the absence of XRT and UVOT follow-up.
  Due to a Sun observing constraint, Swift cannot slew to the BAT position until 22:00 UT on 2014 August 05. There will thus be no XRT or UVOT data for this trigger before this time.
  Burst Advocate for this burst is V. Mangano (vxm22 AT psu.edu). 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 #16370
  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/UMBC), V. Mangano (PSU), 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+240 sec from the recent telemetry downlink, we report further analysis of BAT GRB 140607A (trigger #601051) (Mangano, et al., GCN Circ. 16364). The BAT ground-calculated position is RA, Dec = 86.373, 18.904 deg which is

     RA(J2000)  =  05h 45m 29.5s
     Dec(J2000) = +18d 54' 15.5"
  

  with an uncertainty of 1.9 arcmin, (radius, sys+stat, 90% containment). The partial coding was 16%.
  The mask-weighted light curve shows a very weak multi-peaked structure starting at ~T-10.0 sec, and ending around T+200 sec. The burst location went out of the BAT FOV when Swift started slewing around ~T+200 sec. Thus we have no data beyond ~T+240 sec and we cannot say when the burst was ended. Based on the available data, the T90 (15-350 keV) is 109.9 +- 18.5 sec (estimated error including systematics).
  The time-averaged spectrum from T-17.7 to T+103.8 sec is best fit by a simple power-law model. The power law index of the time-averaged spectrum is 1.78 +- 0.23. The fluence in the 15-150 keV band is 2.2 +- 0.3 x 10^-06 erg/cm2. The 1-sec peak photon flux measured from T+31.58 sec in the 15-150 keV band is 0.9 +- 0.4 ph/cm2/sec. All the quoted errors are at the 90% confidence level.
  The results of the batgrbproduct analysis are available at http://swift.gsfc.nasa.gov/results/BATbursts/601051/bascript/top.html