GRB240504A

This page lists all entries on GRB240504A in GRBweb

Summary Fermi GBM IPN GCN 36387 GCN 36388 GCN 36392 GCN 36407 GCN 36416 GCN 36520

Summary table
Variable Value Source
GRB_name_Fermi GRB240504217
T0 5:12:49.901 UTC GCN_circulars,Fermi GBM Det
ra 64.7667° IPN
decl -10.0833° IPN
pos_error 2.97e+00° IPN
T90 243.717 s Fermi_GBM
T90_error 1.379 s Fermi_GBM
T90_start 5:12:54.494 UTC Fermi_GBM
fluence 6.85e-05 erg/cm² Fermi_GBM
fluence_error 9.21e-08 erg/cm² Fermi_GBM
T100 248.31 s
GBM_located False
mjd 60434.217244224536 GCN_circulars,Fermi GBM Det
Fermi GBM table
GRB_name_Fermi GRB240504217
trigger_name bn240504217
ra 65.8800°
decl -5.9500°
pos_error 4.53e+00°
datum 2024-05-04
t_trigger 5:12:52.638 UTC
T90 243.717 s
T90_error 1.379 s
T90_start 5:12:54.494 UTC
fluence 6.85e-05 erg/cm²
fluence_error 9.21e-08 erg/cm²
flux_1024 3.04e+01 erg/cm²/s
flux_1024_error 1.29e+00 erg/cm²/s
flux_1024_time 1.19e+02 erg/cm²/s
flux_64 3.91e+01 erg/cm²/s
flux_64_error 3.84e+00 erg/cm²/s
IPN table
GRB_name GRB240504A
ra 64.7667°
decl -10.0833°
pos_error 2.97e+00°
GCN 36387 table
GRB_name GRB240504A
GCN_number 36387
Detection_method Fermi GBM final loc
t_trigger 5:12:52 UTC
ra 64.6000°
decl -8.7000°
Circular_text TITLE: GCN CIRCULAR NUMBER: 36387 SUBJECT: GRB 240504A: Fermi GBM Final Real-time Localization DATE: 24/05/04 05:23:23 GMT FROM: Fermi GBM Team at MSFC/Fermi-GBM The Fermi GBM team reports the detection of a likely LONG GRB At 05:12:52 UT on 4 May 2024, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 240504A (trigger 736492377.637702 / 240504217). The on-ground calculated location, using the Fermi GBM trigger data, is RA = 64.6, Dec = -8.7 (J2000 degrees, equivalent to J2000 04h 18m, -8d 41'), with a statistical uncertainty of 2.4 degrees. The angle from the Fermi LAT boresight is 64.0 degrees. The skymap can be found here: https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2024/bn240504217/quicklook/glg_skymap_all_bn240504217.png The HEALPix FITS file, including the estimated localization systematic, can be found here: https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2024/bn240504217/quicklook/glg_healpix_all_bn240504217.fit The GBM light curve can be found here: https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2024/bn240504217/quicklook/glg_lc_medres34_bn240504217.gif
GCN 36388 table
GRB_name GRB240504A
GCN_number 36388
Detection_method Other
Circular_text TITLE: GCN CIRCULAR NUMBER: 36388 SUBJECT: GRB 240504A: BALROG localization (Fermi Trigger 736492377 / GRB 240504217) DATE: 24/05/04 07:42:26 GMT FROM: Jochen Greiner at MPE T. Preis, B. Biltzinger, J. Burgess & J. Greiner (all MPE Garching) report: The public trigdat data of the Fermi Gamma-ray Burst Monitor (GBM) trigger 736492377 at 05:12:52 on 04 May 2024 were automatically fitted for spectrum and sky location with BALROG (Burgess et al. 2018, MNRAS 476, 1427; Berlato et al. 2019, ApJ 873, 60). The best-fit position is: RA(2000.0) = 65.9 deg Decl.(2000.0) = -9.1 deg The 1 sigma statistical error radius is 1.9 deg. We estimate an additional systematic error of 1 deg. Further details are available at: https://grb.mpe.mpg.de/grb/GRB240504217/ The Healpix map can be downloaded from: https://grb.mpe.mpg.de/grb/GRB240504217/healpix The location parameters are available as JSON at: https://grb.mpe.mpg.de/grb/GRB240504217/json
GCN 36392 table
GRB_name GRB240504A
GCN_number 36392
Detection_method Fermi GBM Other
Circular_text TITLE: GCN CIRCULAR NUMBER: 36392 SUBJECT: Fermi GRB 240504A: Global MASTER-Net observations report DATE: 24/05/04 17:32:36 GMT FROM: Vladimir Lipunov at Moscow State U/Krylov Obs V. Lipunov, V.Kornilov, E. Gorbovskoy, K. Zhirkov, N.Tyurina, P.Balanutsa, A.Kuznetsov, V.Senik, D. Vlasenko, G.Antipov, D.Zimnukhov, E.Minkina, A.Chasovnikov, V.Topolev, D.Kuvshinov, D. Cheryasov, Ya.Kechin, Yu.Tselik, A. Sosnovskij (Lomonosov Moscow State University, SAI, Physics Department), R. Podesta, C.Lopez, F. Podesta, C.Francile (Observatorio Astronomico Felix Aguilar OAFA), R. Rebolo, M. Serra (The Instituto de Astrofisica de Canarias), D. Buckley (South African Astronomical Observatory), O.A. Gress, N.M. Budnev, O.Ershova (Irkutsk State University, API), L.Carrasco, J.R.Valdes, V.Chavushyan, V.M.Patino Alvarez, J.Martinez, A.R.Corella, L.H.Rodriguez (INAOE, Guillermo Haro Astrophysics Observatory), A. Tlatov, D. Dormidontov (Kislovodsk Solar Station of the Pulkovo Observatory), V. Yurkov, A. Gabovich (Blagoveschensk Educational State University) 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 GRB 240504A ( Fermi GBM team, GCN 36387) errorbox 42875 sec after notice time and 42910 sec after trigger time at 2024-05-04 17:08:02 UT, with upper limit up to 17.4 mag. Observations started at twilight. The observations began at zenith distance = 74 deg. The sun altitude is -15.3 deg. The galactic latitude b = -35 deg., longitude l = 200 deg. Real time updated cover map and OT discovered available here: https://master.sai.msu.ru/site/master2/observ.php?id=2442874 We obtain a following upper limits. Tmid-T0 | Date Time | Site | Coord (J2000) |Filt.| Expt. | Limit| Comment _________|_____________________|_____________________|____________________________________|_____|_______|_______|________ 42940 | 2024-05-04 17:08:02 | MASTER-SAAO | (04h 16m 43.98s , -08d 23m 19.2s) | C | 60 | 17.3 | 43659 | 2024-05-04 17:20:01 | MASTER-SAAO | (04h 24m 57.17s , -08d 24m 29.7s) | C | 60 | 17.4 | 43979 | 2024-05-04 17:25:21 | MASTER-SAAO | (04h 17m 03.18s , -08d 23m 43.8s) | C | 60 | 16.9 | Filter C is a clear (unfiltred) band. The observation and reduction will continue. The message may be cited.
GCN 36407 table
GRB_name GRB240504A
GCN_number 36407
Detection_method IPN Triangulation
t_trigger 5:12:53 UTC
ra 64.7670°
decl -10.0870°
Circular_text TITLE: GCN CIRCULAR NUMBER: 36407 SUBJECT: IPN triangulation of GRB 240504A DATE: 24/05/07 16:29:24 GMT FROM: Dmitry Svinkin at Ioffe Institute A.S. Kozyrev, D.V. Golovin, M.L. Litvak, I.G. Mitrofanov, and A.B. Sanin on behalf of the HEND/Mars Odyssey team, D. Svinkin, D. Frederiks, A. Ridnaia, A. Lysenko, and T. Cline on behalf of the Konus-Wind team, A. Goldstein, M. S. Briggs, C. Wilson-Hodge, and E. Burns on behalf of the Fermi GBM team, E. Bozzo and C. Ferrigno, on behalf of the INTEGRAL SPI-ACS GRB team, S. Barthelmy, J. Cummings, H. Krimm, D. Palmer, and A. Tohuvavohu on behalf of the Swift-BAT team, and W. Boynton, C. Fellows, K. Harshman, H. Enos, R. Starr, and A.S. Gardner on on behalf of the GRS-Odyssey GRB team, report: The long-duration GRB 240504A (Fermi-GBM detection: The Fermi GBM team, GCN 36387; BALROG localization: Preis et al., GCN 36388; Swift-BAT/GUANO detection: Ronchini et al., GCN 36401) was detected by Fermi (GBM trigger 736492377), Konus-Wind, INTEGRAL (SPI-ACS), Swift (BAT), and Mars-Odyssey (HEND) at about 18773 s UT (05:12:53). The burst was outside the coded field of view of the BAT. We have triangulated it to a preliminary, 3 sigma error box whose coordinates are: --------------------------------------------- RA(2000), deg Dec(2000), deg --------------------------------------------- Center: 64.767 (04h 19m 04s) -10.087 (-10d 05' 13") Corners: 64.587 (04h 18m 21s) -11.558 (-11d 33' 29") 64.659 (04h 18m 38s) -11.560 (-11d 33' 36") 64.926 (04h 19m 42s) -8.615 ( -8d 36' 53") 64.854 (04h 19m 25s) -8.613 ( -8d 36' 47") --------------------------------------------- The error box area is 756 sq. arcmin, and its maximum dimension is 2.96 deg (the minimum one is 4.3 arcmin). The Sun distance was 35 deg. The IPN localization is consistent with, but reduces the area of, the Fermi-GBM final and BALROG localizations. This localization may be improved. A triangulation map and HEALPix FITS file are posted at http://www.ioffe.ru/LEA/GRBs/GRB240504_T18769/IPN/ The Konus-Wind time history and spectrum will be given in a forthcoming GCN Circular.
GCN 36416 table
GRB_name GRB240504A
GCN_number 36416
Detection_method Fermi GBM Det
t_trigger 5:12:52.640 UTC
Circular_text TITLE: GCN CIRCULAR NUMBER: 36416 SUBJECT: GRB 240504A: Fermi GBM Observation DATE: 24/05/08 18:41:31 GMT FROM: Bagrat Mailyan at Florida Tech B. Mailyan (Florida tech) and C. Meegan (UAH) report on behalf of the Fermi Gamma-ray Burst Monitor Team: "At 05:12:52.64 UT on 04 May 2024, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 240504A (trigger 736492377/240504217). which was also detected by Swift/BAT-GUANO (S. Ronchini et al. 2024, GCN 36401). The Fermi GBM on-ground location is consistent with the Fermi GBM final position notice (GCN 36387). The angle from the Fermi LAT boresight is 64 degrees. The GBM light curve consists of a single emission episode with a duration (T90) of about 19 s (50-300 keV). The time-averaged spectrum from T0+0.003 to T0+20.096 s is best fit by a power law function with an exponential high-energy cutoff. The power law index is -1.12 +/- 0.02 and the cutoff energy, parameterized as Epeak, is 682.50 +/- 52.10. A Band function with Epeak 665.80 +/- 55.40, Alpha -1.11 +/- 0.02, Beta -3.01 +/- 0.77 fits the spectrum equally well. The event fluence (10-1000 keV) in this time interval is (2.26 +/- 0.03)E-05 erg/cm^2. The 1-sec peak photon flux measured starting from T0+6.7 s in the 10-1000 keV band is 11.5 +/- 0.3 ph/s/cm^2. We note that there is a second FRED-like peak about 100s after the reported event here that seems to be related. However, due to a contemporaneous solar flare, we are unable to disentangle the two events and thus we omit this portion of the burst due to contamination. We note that the burst could have a T90 of 250s, but other instruments are required to confirm this. 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 36520 table
GRB_name GRB240504A
GCN_number 36520
Detection_method Fermi GBM Det
t_trigger 5:12:49.901 UTC
Circular_text TITLE: GCN CIRCULAR NUMBER: 36520 SUBJECT: GRB 240504A: VZLUSAT-2 detection DATE: 24/05/20 15:19:37 GMT FROM: Andras Pal at Konkoly Observatory A. Pal (Konkoly Observatory), M. Dafcikova, J. Ripa, N. Werner (Masaryk U.), M. Ohno (Hiroshima U.), L. Meszaros, B. Csak (Konkoly Observatory), H. Takahashi (Hiroshima U.), F. Munz , M. Topinka, F. Hroch, N. Husarikova, J.-P. Breuer (Masaryk U.), J. Hudec, J. Kapus, M. Frajt, M. Rezenov (Spacemanic s.r.o), R. Laszlo (Needronix), G. Galgoczi (Wigner Research Center/Eotvos U.), N. Uchida (ISAS/JAXA), T. Enoto (Kyoto U.), Zs. Frei (Eotvos U.), Y. Fukazawa, K. Hirose, H. Matake (Hiroshima U.), S. Hisadomi (Nagoya U.), Y. Ichinohe (Rikkyo U.), L. L. Kiss (Konkoly Observatory), T. Mizuno (Hiroshima U.), K. Nakazawa (Nagoya U.), H. Odaka (Univ of Tokyo), K. Torigoe (Hiroshima U.), P. Svoboda, V. Daniel, J. Dudas, M. Junas, J. Gromes (VZLU), I. Vertat (FEL ZCU) -- the VZLUSAT-2/GRB payload collaboration. The long-duration GRB 240504A (Fermi/GBM detection: GCN 36416; Swift/BAT-GUANO detection: GCN 36401; Konus/Wind detection trigger at 2024-05-04 05:12:49.901 UT; INTEGRAL/SPI-ACS peak detection at 2024-05-04 ~04:03:45 UT) was detected by the GRB detectors on board of the VZLUSAT-2 3U CubeSat (https://www.vzlusat2.cz/en/). The data acquisition was performed by the GRB detector units no. 0 and no. 1. The detection was confirmed at the peak time 2024-05-04 05:12:51 (05:12:52) UTC. The T90 duration is 15 s (13 s) and the significance during T90 reaches 24 sigma (14 sigma) for detector unit no. 0 (no. 1). The light curve obtained by VZLUSAT-2 is available here: https://vzlusat2.konkoly.hu/static/share/GRB240504A_GCN_VZLUSAT2.pdf We note that the light curve measured by VZLUSAT-2 is shifted by approximately 8 s with respect to light curves obtained by other missions. The cause of the on-board clock slip is being fixed. All VZLUSAT-2 detections are listed at: https://monoceros.physics.muni.cz/hea/VZLUSAT-2/. The GRB detectors on VZLUSAT-2 are a demonstration payload for a future CubeSat constellation (Werner et al. Proc. SPIE 2018). Two GRB modules of VZLUSAT-2 are placed in a perpendicular manner and each consists of a 75 x 75 x 5 mm3 CsI scintillator read out by a SiPM array, covering the energy range from ~30 keV to ~1000 keV. VZLUSAT-2 was launched on 2022 January 13 from Cape Canaveral.