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This page lists all entries on GRB240829B in GRBweb

Summary Fermi GBM GCN 37342 GCN 37366

Summary table
Variable	Value	Source
GRB_name_Fermi	GRB240829058
T0	1:23:40.698 UTC	Fermi_GBM
ra	204.6500°	Fermi_GBM
decl	57.2800°	Fermi_GBM
pos_error	4.44e+00°	Fermi_GBM
T90	11.52 s	Fermi_GBM
T90_error	0.81 s	Fermi_GBM
T90_start	1:23:41.466 UTC	Fermi_GBM
fluence	1.48e-05 erg/cm²	Fermi_GBM
fluence_error	5.21e-08 erg/cm²	Fermi_GBM
T100	12.288 s
GBM_located	True
mjd	60551.05810993056	Fermi_GBM

Fermi GBM table
GRB_name_Fermi	GRB240829058
trigger_name	bn240829058
ra	204.6500°
decl	57.2800°
pos_error	4.44e+00°
datum	2024-08-29
t_trigger	1:23:40.698 UTC
T90	11.52 s
T90_error	0.81 s
T90_start	1:23:41.466 UTC
fluence	1.48e-05 erg/cm²
fluence_error	5.21e-08 erg/cm²
flux_1024	1.58e+01 erg/cm²/s
flux_1024_error	3.55e-01 erg/cm²/s
flux_1024_time	2.11e+00 erg/cm²/s
flux_64	1.95e+01 erg/cm²/s
flux_64_error	1.59e+00 erg/cm²/s

GCN 37342 table
GRB_name	GRB240829B
GCN_number	37342
Detection_method	Fermi GBM Other
ra	204.6000°
decl	57.3000°
Circular_text	TITLE: GCN CIRCULAR NUMBER: 37342 SUBJECT: GRB 240829B: Fermi GBM Final Localization DATE: 24/08/29 20:28:43 GMT FROM: sumanbala2210@gmail.com The Fermi GBM team reports the detection of a likely LONG GRB "At 01:23:40.70 UT on 29 August 2024, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 240829B (trigger 746587425/240829058). The on-ground calculated location, using the Fermi GBM trigger data, is RA = 204.6, Dec = 57.3 (J2000 degrees, equivalent to J2000 13h 38m, 57d 18'), with a statistical uncertainty of 1.0 degrees. The angle from the Fermi LAT boresight is 22 degrees. The skymap can be found here: https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2024/bn240829058/quicklook/glg_skymap_all_bn240829058.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/bn240829058/quicklook/glg_healpix_all_bn240829058.fit The GBM light curve can be found here: https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2024/bn240829058/quicklook/glg_lc_medres34_bn240829058.gif"

GCN 37366 table
GRB_name	GRB240829B
GCN_number	37366
Detection_method	Fermi GBM Det
t_trigger	1:23:45.200 UTC
Circular_text	TITLE: GCN CIRCULAR NUMBER: 37366 SUBJECT: GRB 240829B: GRBAlpha detection DATE: 24/08/31 19:39:44 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 240829B (Fermi/GBM detection: GCN 37342, INTEGRAL/SPI-ACS detection: trigger no. 10879) 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 2024-08-29 01:23:45.2 UTC. The T90 duration measured by GRBAlpha is 9.5 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/GRB240829B_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.