GRB240916A

This page lists all entries on GRB240916A in GRBweb

Summary Fermi GBM IPN GCN 37518 GCN 37519 GCN 37540 GCN 37543

Summary table
Variable Value Source
GRB_name_Fermi GRB240916058
T0 1:22:55 UTC GCN_circulars,Fermi GBM final loc
ra 235.9125° IPN
decl -7.7500° IPN
pos_error 1.67e-03° IPN
T90 32.001 s Fermi_GBM
T90_error 0.81 s Fermi_GBM
T90_start 1:22:56.540 UTC Fermi_GBM
fluence 1.26e-05 erg/cm² Fermi_GBM
fluence_error 2.81e-08 erg/cm² Fermi_GBM
redshift 2.6100 IPN
T100 33.541 s
GBM_located False
mjd 60569.05758101852 GCN_circulars,Fermi GBM final loc
Fermi GBM table
GRB_name_Fermi GRB240916058
trigger_name bn240916058
ra 233.1700°
decl -7.0700°
pos_error 2.69e+00°
datum 2024-09-16
t_trigger 1:22:55.772 UTC
T90 32.001 s
T90_error 0.81 s
T90_start 1:22:56.540 UTC
fluence 1.26e-05 erg/cm²
fluence_error 2.81e-08 erg/cm²
flux_1024 5.50e+00 erg/cm²/s
flux_1024_error 2.91e-01 erg/cm²/s
flux_1024_time 1.00e+01 erg/cm²/s
flux_64 7.55e+00 erg/cm²/s
flux_64_error 1.36e+00 erg/cm²/s
IPN table
GRB_name GRB240916A
ra 235.9125°
decl -7.7500°
pos_error 1.67e-03°
redshift 2.6100
GCN 37518 table
GRB_name GRB240916A
GCN_number 37518
Detection_method Fermi GBM final loc
t_trigger 1:22:55 UTC
ra 233.2000°
decl -7.1000°
Circular_text TITLE: GCN CIRCULAR NUMBER: 37518 SUBJECT: GRB 240916A: Fermi GBM Final Real-time Localization DATE: 24/09/16 01:33:35 GMT FROM: Fermi GBM Team at MSFC/Fermi-GBM The Fermi GBM team reports the detection of a likely LONG GRB At 01:22:55 UT on 16 Sep 2024, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 240916A (trigger 748142580.77199 / 240916058). The on-ground calculated location, using the Fermi GBM trigger data, is RA = 233.2, Dec = -7.1 (J2000 degrees, equivalent to J2000 15h 32m, -7d 05'), with a statistical uncertainty of 1.2 degrees. The angle from the Fermi LAT boresight is 81.0 degrees. The skymap can be found here: https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2024/bn240916058/quicklook/glg_skymap_all_bn240916058.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/bn240916058/quicklook/glg_healpix_all_bn240916058.fit The GBM light curve can be found here: https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2024/bn240916058/quicklook/glg_lc_medres34_bn240916058.gif
GCN 37519 table
GRB_name GRB240916A
GCN_number 37519
Detection_method INTEGRAL
Circular_text TITLE: GCN CIRCULAR NUMBER: 37519 SUBJECT: GRB 240916A INTEGRAL SPI ACS LIGHT CURVE DATE: 24/09/16 05:27:32 GMT FROM: Devraj Pawar at R. J. College, Mumbai - 86, India Devraj Pawar (R. J. College, Mumbai-86, India) on behalf of a collaboration studying transients. The Fermi GBM team has reported a GRB in GCN 37518. We analyzed the INTEGRAL SPI ACS data around the T0 given in GCN 37518 and detected a peak in the count rate which lasts for about 50 s. The SPI ACS is sensitive above 80 keV; the peak of the burst is at ~4300 counts/s and the steady rate preceding the event is around 3800 counts/s. The peak count rate may be affected by the instruments orientation with respect to the direction of the source. The light curve and the profile is given in the link below : [https://docs.google.com/document/d/1ypksdTUoXwB8_Lwr5zhiB-8ivEdobW_oeGTxN8B2Y_Y/edit?usp=sharing]() This work is based on observations with INTEGRAL, an ESA project with instruments and a science data center funded by ESA member states (especially the PI countries: Denmark, France, Germany, Italy, Switzerland, Spain), and with the participation of Russia and the USA. The SPI-ACS detector system has been provided by MPE Garching/Germany.
GCN 37540 table
GRB_name GRB240916A
GCN_number 37540
Detection_method Optical
Circular_text TITLE: GCN CIRCULAR NUMBER: 37540 SUBJECT: GRB 240916A: NOT optical observation DATE: 24/09/17 23:53:34 GMT FROM: sqjiang at NAOC S.Q. Jiang (NAOC), D. B. Malesani (DAWN/NBI and Radboud Univ.), D. Xu (NAOC), B. N. Hauptmann (NOT) report on behalf of a large collaboration: We observed the optical counterpart (AT 2024vlp / GOTO24fzn: Gompertz et al., GCN 37522; Jiang et al., GCN 37526; Pieterse et al., GCN 37532) of GRB 240916A, detected by Fermi/GBM (Fermi GBM Team, GCNs 37518, 37535) and INTEGRAL SPI/ACS (Pawar et al., GCN 37519) using the 2.56-m Nordic Optical Telescope (NOT) equipped with the ALFOSC camera, and obtained 3 x 300 s frames in the Sloan r-band, starting at 20:03:23.239 UT on 2024-09-17, i.e., 42.675 hr after the Fermi/GBM trigger. The afterglow is clearly detected in our stacked image, with a magnitude r = 20.58 +/- 0.04 (AB), calibrated against nearby Pan-STARRS stars and not corrected for Galactic extinction.
GCN 37543 table
GRB_name GRB240916A
GCN_number 37543
Detection_method Fermi GBM Det
t_trigger 1:23:10.800 UTC
Circular_text TITLE: GCN CIRCULAR NUMBER: 37543 SUBJECT: GRB 240916A: GRBAlpha detection DATE: 24/09/18 15:01:46 GMT FROM: Marianna Dafčíková at Masaryk University <500025@mail.muni.cz> M. Dafcikova, J. Ripa, M. Kolar (Masaryk U.), A. Pal (Konkoly Observatory), N. Werner (Masaryk U.), M. Ohno, H. Takahashi (Hiroshima U.), L. Meszaros, B. Csak (Konkoly Observatory), N. Husarikova, F. Munz , M. Topinka, M. Duriskova, L. Szakszonova, J.-P. Breuer, F. Hroch (Masaryk U.), T. Urbanec, M. Kasal, A. Povalac (Brno U. of Technology), J. Hudec, J. Kapus, M. Frajt (Spacemanic s.r.o), R. Laszlo, M. Koleda (Needronix s.r.o), M. Smelko, P. Hanak, P. Lipovsky (Technical U. of Kosice), G. Galgoczi (Wigner Research Center/Eotvos U.), Y. Uchida, H. Poon, H. Matake (Hiroshima U.), N. Uchida (ISAS/JAXA), T. Bozoki (Eotvos U.), G. Dalya (Eotvos U.), T. Enoto (Kyoto U.), Zs. Frei (Eotvos U.), G. Friss (Eotvos U.), Y. Fukazawa, K. Hirose (Hiroshima U.), S. Hisadomi (Nagoya U.), Y. Ichinohe (Rikkyo U.), K. Kapas (Eotvos U.), L. L. Kiss (Konkoly Observatory), T. Mizuno (Hiroshima U.), K. Nakazawa (Nagoya U.), H. Odaka (Univ of Tokyo), J. Takatsy (Eotvos U.), K. Torigoe (Hiroshima U.), N. Kogiso, M. Yoneyama (Osaka Metropolitan U.), M. Moritaki (U. Tokyo), T. Kano (U. Michigan) -- the GRBAlpha collaboration. The long-duration GRB 240916A (Fermi/GBM detection: GCN 37518; INTEGRAL/SPI-ACS detection: GCN 37519) was observed by the GRBAlpha 1U CubeSat (Pal et al. 2023, A&A, 677, 40; https://ui.adsabs.harvard.edu/abs/2023A%26A...677A..40P/abstract). The detection was confirmed at the peak time 2024-09-16 01:23:10.8 UTC. The T90 duration measured by GRBAlpha is 27 s and the overall significance during T90 reaches 13 sigma. The light curve obtained by GRBAlpha is available here: https://grbalpha.konkoly.hu/static/share/GRB240916A_GCN.pdf All GRBAlpha detections are listed at: https://monoceros.physics.muni.cz/hea/GRBAlpha/ GRBAlpha, launched on 2021 March 22, is a demonstration mission for a future CubeSat constellation (Werner et al. Proc. SPIE 2018). The detector of GRBAlpha consists of a 75 x 75 x 5 mm3 CsI scintillator read out by a SiPM array, covering the energy range from ~50 keV to ~1000 keV. To increase the duty cycle and the downlink rate, the upgrade of the on-board data acquisition software stack is in progress. The ground segment is also supported by the radio amateur community and it takes advantage of the SatNOGS network for increased data downlink volume.