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This page lists all entries on GRB240430A in GRBweb

Summary Fermi GBM GCN 36361 GCN 36373

Summary table
Variable	Value	Source
GRB_name_Fermi	GRB240430806
T0	19:21:19.719 UTC	Fermi_GBM
ra	201.0200°	Fermi_GBM
decl	1.5400°	Fermi_GBM
pos_error	4.64e+00°	Fermi_GBM
T90	14.592 s	Fermi_GBM
T90_error	0.724 s	Fermi_GBM
T90_start	19:21:20.231 UTC	Fermi_GBM
fluence	7.07e-06 erg/cm²	Fermi_GBM
fluence_error	3.16e-08 erg/cm²	Fermi_GBM
T100	15.104 s
GBM_located	True
mjd	60430.80647822917	Fermi_GBM

Fermi GBM table
GRB_name_Fermi	GRB240430806
trigger_name	bn240430806
ra	201.0200°
decl	1.5400°
pos_error	4.64e+00°
datum	2024-04-30
t_trigger	19:21:19.719 UTC
T90	14.592 s
T90_error	0.724 s
T90_start	19:21:20.231 UTC
fluence	7.07e-06 erg/cm²
fluence_error	3.16e-08 erg/cm²
flux_1024	9.11e+00 erg/cm²/s
flux_1024_error	2.93e-01 erg/cm²/s
flux_1024_time	5.31e+00 erg/cm²/s
flux_64	1.18e+01 erg/cm²/s
flux_64_error	1.30e+00 erg/cm²/s

GCN 36361 table
GRB_name	GRB240430A
GCN_number	36361
Detection_method	Fermi GBM Other
ra	201.0000°
decl	1.5000°
Circular_text	TITLE: GCN CIRCULAR NUMBER: 36361 SUBJECT: GRB240430A: Fermi GBM Final Localization DATE: 24/05/01 14:58:25 GMT FROM: Cuán de Barra at UCD The Fermi GBM team reports the detection of a likely LONG GRB. At 19:21:19.72 UT on 30 Apr 2024, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 240430A (trigger 736197684 / 240430806). The on-ground calculated location, using the Fermi GBM trigger data, is RA = 201.0, Dec = 1.5 (J2000 degrees, equivalent to J2000 +13h 24m, +01d 32') with a statistical uncertainty of 2.6 degrees. The angle from the Fermi LAT boresight is 62 degrees. The skymap can be found here: https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2024/bn240430806/quicklook/glg_skymap_all_bn240430806.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/bn240430806/quicklook/glg_healpix_all_bn240430806.fit The GBM light curve can be found here: http://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2024/bn240430806/quicklook/glg_lc_medres34_bn240430806.gif

GCN 36373 table
GRB_name	GRB240430A
GCN_number	36373
Detection_method	Fermi GBM Det
t_trigger	19:21:29.094 UTC
Circular_text	TITLE: GCN CIRCULAR NUMBER: 36373 SUBJECT: GRB 240430A: GRBAlpha detection DATE: 24/05/02 17:29:58 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 240430A (Fermi/GBM detection: GCN 36361; Konus/Wind detection trigger at 2024-04-30 19:21:29.094 UT; INTEGRAL/SPI-ACS peak detection at 2024-04-30 ~19:21:28 UT) 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 2024-04-30 19:21:24.7 UTC. The T90 duration measured by GRBAlpha is 12 s and the overall significance during T90 reaches 18 sigma. The light curve obtained by GRBAlpha is available here: https://grbalpha.konkoly.hu/static/share/GRB240430A_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.