//////////////////////////////////////////////////////////////////////// TITLE: GCN CIRCULAR NUMBER: 24500 SUBJECT: GRB 190512A: Fermi GBM Final Real-time Localization DATE: 19/05/12 14:51:00 GMT FROM: Fermi GBM Team at MSFC/Fermi-GBM 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 //////////////////////////////////////////////////////////////////////// TITLE: GCN CIRCULAR NUMBER: 24501 SUBJECT: GRB 190512A: Swift detection of a burst DATE: 19/05/12 14:51:17 GMT FROM: Boris Sbarufatti at PSU 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/) //////////////////////////////////////////////////////////////////////// TITLE: GCN CIRCULAR NUMBER: 24506 SUBJECT: Fermi GRB190512.62 Global MASTER-Net observations report DATE: 19/05/12 19:31:29 GMT FROM: Vladimir Lipunov at Moscow State U/Krylov Obs V. Lipunov, E. Gorbovskoy, V.Kornilov, D.Kuvshinov, N.Tyurina, P.Balanutsa, A.Kuznetsov, V.V.Chazov, D. Vlasenko (Lomonosov Moscow State University, Sternberg Astronomical Institute, Moscow State University) A. Tlatov, V.Senik, A.V. Parhomenko, D. Dormidontov (Kislovodsk Solar Station of the Pulkovo Observatory) K. Ivanov, O. Gres, N.M. Budnev, S. Yazev, O. Chuvalaev, V. Poleshchuk (Irkutsk State University) V. Yurkov, A. Gabovich, Yu. Sergienko (Blagoveschensk Educational State University, Blagoveschensk) R. Podesta, Carlos Lopez and F. Podesta (Observatorio Astronomico Felix Aguilar (OAFA)) Hugo Levato and Carlos Saffe (Instituto de Ciencias Astronomicas, de la Tierra y del Espacio (ICATE)) R. Rebolo, M. Serra, N. Lodieu, G. Israelian, L. Suarez-Andres (The Instituto de Astrofisica de Canarias) D. Buckley, S. Potter, A. Kniazev, M. Kotze (South African Astronomical Observatory) MASTER-SAAO robotic telescope (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L) located in South Africa (South African Astronomical Observatory) started inspect of the Fermi GRB190512.62 (trigger No 579365797, 16h 36m 55.92s , -22d 49m 58.80s, R=25.93) errorbox 14603 sec after trigger time at 2019-05-12 18:59:55 UT, with upper limit up to 19.3 mag. The observations began at zenit distance = 65 deg. The sun altitude is -39.8 deg. The galactic latitude b = -60 deg., longitude l = 98 deg. Real time updated cover map and OT discovered available here: https://master.sai.msu.ru/site/master2/observ.php?id=1016633 We obtain a following upper limits. Tmid-T0 | Date Time | Site | Coord (J2000) |Filt.| Expt. | Limit| Comment _________|_____________________|_____________________|____________________________________|_____|_______|_______|________ 14694 | 2019-05-12 18:59:55 | MASTER-SAAO | ( 16h 45m 26.79s , -26d 34m 45.66s) | C | 180 | 18.3 | 14904 | 2019-05-12 19:03:25 | MASTER-SAAO | ( 16h 45m 34.58s , -26d 34m 29.51s) | C | 180 | 19.1 | 15114 | 2019-05-12 19:06:55 | MASTER-SAAO | ( 16h 45m 34.73s , -26d 34m 24.33s) | C | 180 | 19.3 | Filter C is a clear (unfiltred) band. The observation and reduction will continue. The message may be cited. //////////////////////////////////////////////////////////////////////// TITLE: GCN CIRCULAR NUMBER: 24510 SUBJECT: GRB 190512A: Fermi GBM observation DATE: 19/05/12 21:31:08 GMT FROM: Cori Fletcher at USRA 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/ //////////////////////////////////////////////////////////////////////// TITLE: GCN CIRCULAR NUMBER: 24520 SUBJECT: GRB 190512A: Swift-BAT refined analysis DATE: 19/05/13 16:35:27 GMT FROM: Hans Krimm at NSF/NASA-GSFC 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/