Gamma-ray Burst 190512A

(All information courtesy of the instrument teams.)

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Results of Observations

GCN/BACODINE POSITION NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sun 12 May 19 14:41:27 UT
NOTICE_TYPE:     Swift-BAT GRB Position
TRIGGER_NUM:     903357,   Seg_Num: 0
GRB_RA:           82.440d {+05h 29m 46s} (J2000),
                  82.674d {+05h 30m 42s} (current),
                  81.836d {+05h 27m 21s} (1950)
GRB_DEC:          -7.574d {-07d 34' 25"} (J2000),
                  -7.560d {-07d 33' 35"} (current),
                  -7.612d {-07d 36' 42"} (1950)
GRB_ERROR:       3.00 [arcmin radius, statistical only]
GRB_INTEN:       0 [cnts]    Image_Peak=2108 [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:        18615 TJD;   132 DOY;   19/05/12
GRB_TIME:        52809.10 SOD {14:40:09.10} UT
GRB_PHI:         -49.65 [deg]
GRB_THETA:        22.12 [deg]
SOLN_STATUS:     0x20000013
RATE_SIGNIF:     0.00 [sigma]
IMAGE_SIGNIF:    9.64 [sigma]
MERIT_PARAMS:     +1  +0  +0  +6  +1  +0 -100  +0 -74  +0 
SUN_POSTN:        49.17d {+03h 16m 42s}  +18.16d {+18d 09' 38"}
SUN_DIST:         41.89 [deg]   Sun_angle= -2.2 [hr] (East of Sun)
MOON_POSTN:      152.35d {+10h 09m 25s}  +14.92d {+14d 54' 57"}
MOON_DIST:        72.62 [deg]
MOON_ILLUM:      57 [%]
GAL_COORDS:      210.44,-21.59 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:       81.27,-30.78 [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 = 8.14,13.18 [deg].  
COMMENTS:           
COMMENTS:        NOTE: This BAT event is temporally(10.0<100sec) coincident with the FERMI_GBM event (trignum=579364804).

red DSS finding chart ps-file

GCN NOTICE

TITLE:           GCN/FERMI NOTICE
NOTICE_DATE:     Sun 12 May 19 14:40:23 UT
NOTICE_TYPE:     Fermi-GBM Flight Position
RECORD_NUM:      50
TRIGGER_NUM:     579364804
GRB_RA:           73.400d {+04h 53m 36s} (J2000),
                  73.613d {+04h 54m 27s} (current),
                  72.850d {+04h 51m 24s} (1950)
GRB_DEC:         -18.750d {-18d 45' 00"} (J2000),
                 -18.719d {-18d 43' 09"} (current),
                 -18.831d {-18d 49' 50"} (1950)
GRB_ERROR:       11.73 [deg radius, statistical plus systematic]
GRB_INTEN:       96 [cnts/sec]
DATA_SIGNIF:     6.50 [sigma]
INTEG_TIME:      2.048 [sec]
GRB_DATE:        18615 TJD;   132 DOY;   19/05/12
GRB_TIME:        52799.72 SOD {14:39:59.72} UT
GRB_PHI:         280.00 [deg]
GRB_THETA:        15.00 [deg]
DATA_TIME_SCALE: 2.0480 [sec]
HARD_RATIO:      0.35
LOC_ALGORITHM:   3 (version number of)
MOST_LIKELY:      95%  GRB
2nd_MOST_LIKELY:   3%  Generic Transient
DETECTORS:       1,0,0, 1,0,0, 1,0,0, 0,0,0, 0,0,
SUN_POSTN:        49.17d {+03h 16m 41s}  +18.16d {+18d 09' 38"}
SUN_DIST:         44.01 [deg]   Sun_angle= -1.6 [hr] (East of Sun)
MOON_POSTN:      152.34d {+10h 09m 23s}  +14.92d {+14d 55' 08"}
MOON_DIST:        84.48 [deg]
MOON_ILLUM:      57 [%]
GAL_COORDS:      218.04,-34.13 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:       69.00,-40.99 [deg] ecliptic lon,lat of the burst (or transient)
LC_URL:          http://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2019/bn190512611/quicklook/glg_lc_medres34_bn190512611.gif
COMMENTS:        Fermi-GBM Flight-calculated Coordinates.  
COMMENTS:        This trigger occurred at longitude,latitude = 335.15,24.30 [deg].  
COMMENTS:        The LC_URL file will not be created until ~15 min after the trigger.

GCN NOTICE

TITLE:           GCN/FERMI NOTICE
NOTICE_DATE:     Sun 12 May 19 14:40:37 UT
NOTICE_TYPE:     Fermi-GBM Ground Position
RECORD_NUM:      59
TRIGGER_NUM:     579364804
GRB_RA:           83.430d {+05h 33m 43s} (J2000),
                  83.653d {+05h 34m 37s} (current),
                  82.855d {+05h 31m 25s} (1950)
GRB_DEC:         -13.230d {-13d 13' 47"} (J2000),
                 -13.218d {-13d 13' 03"} (current),
                 -13.263d {-13d 15' 47"} (1950)
GRB_ERROR:       4.05 [deg radius, statistical only]
DATA_SIGNIF:     7.60 [sigma]
DATA_INTERVAL:   4.096 [sec]
GRB_DATE:        18615 TJD;   132 DOY;   19/05/12
GRB_TIME:        52799.72 SOD {14:39:59.72} UT
GRB_PHI:         280.00 [deg]
GRB_THETA:        26.00 [deg]
E_RANGE:         44.032 - 279.965 [keV]
LOC_ALGORITHM:   4153 (Gnd S/W Version number)
SUN_POSTN:        49.17d {+03h 16m 41s}  +18.16d {+18d 09' 38"}
SUN_DIST:         46.27 [deg]   Sun_angle= -2.3 [hr] (East of Sun)
MOON_POSTN:      152.35d {+10h 09m 23s}  +14.92d {+14d 55' 06"}
MOON_DIST:        73.56 [deg]
MOON_ILLUM:      57 [%]
GAL_COORDS:      216.42,-23.11 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:       82.04,-36.49 [deg] ecliptic lon,lat of the burst (or transient)
LC_URL:          http://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2019/bn190512611/quicklook/glg_lc_medres34_bn190512611.gif
POS_MAP_URL:     http://gcn.gsfc.nasa.gov/notices_f/gbm_gnd_loc_map_579364804.fits
COMMENTS:        Fermi-GBM Ground-calculated Coordinates.  
COMMENTS:        In the LAT Field-of-view.  
COMMENTS:        This Notice was ground-generated -- not flight-generated.  
COMMENTS:        The LC_URL file will not be created/available until ~15 min after the trigger.  
COMMENTS:        The POS_MAP_URL file will not be created/available until ~1.5 min after the notice.

GCN NOTICE

TITLE:           GCN/FERMI NOTICE
NOTICE_DATE:     Sun 12 May 19 14:49:14 UT
NOTICE_TYPE:     Fermi-GBM Final Position
RECORD_NUM:      0
TRIGGER_NUM:     579364804
GRB_RA:           80.290d {+05h 21m 10s} (J2000),
                  80.518d {+05h 22m 04s} (current),
                  79.701d {+05h 18m 48s} (1950)
GRB_DEC:         -10.650d {-10d 39' 00"} (J2000),
                 -10.632d {-10d 37' 54"} (current),
                 -10.698d {-10d 41' 53"} (1950)
GRB_ERROR:       2.98 [deg radius, statistical only]
GRB_DATE:        18615 TJD;   132 DOY;   19/05/12
GRB_TIME:        52799.72 SOD {14:39:59.72} UT
GRB_PHI:         289.00 [deg]
GRB_THETA:        25.00 [deg]
E_RANGE:         44.032 - 279.965 [keV]
LOC_ALGORITHM:   41531 (Gnd S/W Version number)
SUN_POSTN:        49.18d {+03h 16m 43s}  +18.16d {+18d 09' 43"}
SUN_DIST:         42.26 [deg]   Sun_angle= -2.1 [hr] (East of Sun)
MOON_POSTN:      152.43d {+10h 09m 43s}  +14.89d {+14d 53' 37"}
MOON_DIST:        75.67 [deg]
MOON_ILLUM:      57 [%]
GAL_COORDS:      212.46,-24.83 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:       78.51,-33.70 [deg] ecliptic lon,lat of the burst (or transient)
LC_URL:          http://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2019/bn190512611/quicklook/glg_lc_medres34_bn190512611.gif
LOC_URL:         http://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2019/bn190512611/quicklook/glg_locplot_all_bn190512611.png
COMMENTS:        Fermi-GBM Final Position.  
COMMENTS:        This Notice was ground-generated -- not flight-generated.  
COMMENTS:        The LC_URL file should be available by the time this FINAL notice is produced.  
COMMENTS:        This notice was generated completely by automated pipeline processing.  
COMMENTS:        In the LAT Field-of-view.  
COMMENTS:        This is likely a Long GRB.  
COMMENTS:           
COMMENTS:        NOTE: This GBM event is temporally(10.0<100sec) coincident with the SWIFT_BAT event (trignum=903357).

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sun 12 May 19 14:44:39 UT
NOTICE_TYPE:     Swift-BAT GRB Lightcurve
TRIGGER_NUM:     903357,   Seg_Num: 0
GRB_RA:           82.440d {+05h 29m 46s} (J2000),
                  82.674d {+05h 30m 42s} (current),
                  81.836d {+05h 27m 21s} (1950)
GRB_DEC:          -7.574d {-07d 34' 25"} (J2000),
                  -7.560d {-07d 33' 35"} (current),
                  -7.612d {-07d 36' 42"} (1950)
GRB_DATE:        18615 TJD;   132 DOY;   19/05/12
GRB_TIME:        52809.10 SOD {14:40:09.10} UT
TRIGGER_INDEX:   20000
GRB_PHI:         -49.65 [deg]
GRB_THETA:        22.12 [deg]
DELTA_TIME:      0.00 [sec]
TRIGGER_DUR:     64.000 [sec] 
SOLN_STATUS:     0x13
RATE_SIGNIF:     0.00 [sigma]
IMAGE_SIGNIF:    9.64 [sigma]
LC_URL:          sw00903357000msb.lc
SUN_POSTN:        49.18d {+03h 16m 42s}  +18.16d {+18d 09' 40"}
SUN_DIST:         41.89 [deg]   Sun_angle= -2.2 [hr] (East of Sun)
MOON_POSTN:      152.39d {+10h 09m 33s}  +14.91d {+14d 54' 24"}
MOON_DIST:        72.64 [deg]
MOON_ILLUM:      57 [%]
GAL_COORDS:      210.44,-21.59 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:       81.27,-30.78 [deg] ecliptic lon,lat of the burst (or transient)
COMMENTS:        SWIFT-BAT GRB Lightcurve.  
COMMENTS:           
COMMENTS:        The next comments were copied from the BAT_POS Notice:  
COMMENTS:        This is an image trigger.  
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 = 8.14,13.18 [deg].

GCN Circular #24500
The Fermi GBM team reports the detection of a likely LONG GRB
At 14:39:59 UT on 12 May 2019, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 190512A (trigger 579364804.721872 / 190512611).
The on-ground calculated location, using the Fermi GBM trigger data, is RA = 80.3, Dec = -10.7 (J2000 degrees, equivalent to J2000 05h 21m, -10d 41'), with a statistical uncertainty of 3.0 degrees.
The angle from the Fermi LAT boresight is 25.0 degrees.
The skymap can be found here: http://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2019/bn190512611/quicklook/glg_skymap_all_bn190512611.png
The HEALPix FITS file, including the estimated localization systematic, can be found here: http://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2019/bn190512611/quicklook/glg_healpix_all_bn190512611.fit
The GBM light curve can be found here: http://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2019/bn190512611/quicklook/glg_lc_medres34_bn190512611.gif
GCN Circular #24501
M. G. Bernardini (INAF-OAB), J. A. Kennea (PSU), H. A. Krimm (NSF/USRA), A. Melandri (INAF-OAB), K. L. Page (U Leicester), D. M. Palmer (LANL), B. Sbarufatti (PSU) and A. Tohuvavohu (PSU) report on behalf of the Neil Gehrels Swift Observatory Team:
At 14:40:09 UT, the Swift Burst Alert Telescope (BAT) triggered and located GRB 190512A (trigger=903357). The BAT on-board calculated location is RA, Dec 82.440, -7.574 which is
```
   RA(J2000) = 05h 29m 46s
   Dec(J2000) = -07d 34' 25"
```
with an uncertainty of 3 arcmin (radius, 90% containment, including systematic uncertainty). The BAT light curve showed a FRED-profile structure with a duration of about 30 sec. The peak count rate was ~1000 counts/sec (15-350 keV), at ~6 sec after the trigger.
Due to a Sun observing constraint, Swift cannot slew to the BAT position until 18:41 UT on 2019 July 21. There will thus be no XRT or UVOT data for this trigger before this time.
Burst Advocate for this burst is M. G. Bernardini (grazia.bernardini 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/)
GCN Circular #24510
C. Fletcher (USRA) and C. Meegan (UAH) report on behalf of the Fermi GBM Team:
"At 14:39:59.72 UT on 12 May 2019, the Fermi Gamma-Ray Burst Monitor triggered and located GRB 190512A (trigger 579364804 / 190512611) which was also detected by the Swift/BAT (Bernardini et al. 2019, GCN 24501) The GBM on-ground location is consistent with the Swift position.
The angle from the Fermi LAT boresight at the GBM trigger time is 24 degrees.
The GBM light curve consists of a single peak with a duration (T90) of about 28 s (50-300 keV). The time-averaged spectrum from T0-4.1 s to T0+27.7 s is best fit by a power law function with an exponential high-energy cutoff. The power law index is -1.4 +/- 0.2 and the cutoff energy, parameterized as Epeak, is 110 +/- 25 keV
The event fluence (10-1000 keV) in this time interval is (2.4 +/- 0.3)E-06 erg/cm^2. The 1-sec peak photon flux measured starting from T0+3.13 s in the 10-1000 keV band is 2.0 +/- 0.3 ph/s/cm^2."
The spectral analysis results presented above are preliminary; final results will be published in the GBM GRB Catalog: https://heasarc.gsfc.nasa.gov/W3Browse/fermi/fermigbrst.html
For Fermi GBM data and info, please visit the official Fermi GBM Support Page: https://fermi.gsfc.nasa.gov/ssc/data/access/gbm/
GCN Circular #24520
J. R. Cummings (CPI), S. D. Barthelmy (GSFC), M. G. Bernardini (INAF-OAB), H. A. Krimm (NSF/USRA), 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-239 to T+963 sec from the recent telemetry downlink, we report further analysis of BAT GRB 190512A (trigger #903357) (Bernardini, et al., GCN Circ. 24501). The BAT ground-calculated position is RA, Dec = 82.402, -7.582 deg which is
```
  RA(J2000)  =  05h 29m 36.5s 
  Dec(J2000) = -07d 34' 56.1" 
```
with an uncertainty of 2.9 arcmin, (radius, sys+stat, 90% containment). The partial coding was 83%.
The mask-weighted light curve shows a single FRED-shaped profile, starting at T-12 sec, peaking close to T+0 sec, and slowly decaying to background by T+50 sec. T90 (15-350 keV) is 40.1 +- 11.3 sec (estimated error including systematics).
The time-averaged spectrum from T-9.70 to T+43.31 sec is best fit by a simple power-law model. The power law index of the time-averaged spectrum is 2.07 +- 0.14. The fluence in the 15-150 keV band is 1.3 +- 0.1 x 10^-6 erg/cm2. The 1-sec peak photon flux measured from T-2.78 sec in the 15-150 keV band is 1.0 +- 0.2 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/903357/BA/

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Jochen Greiner, last update: 21-May-2019 [Disclaimer]