GRB 240814B
GCN Circular 37177
Subject
GRB 240814B: Fermi GBM Final Real-time Localization
Date
2024-08-14T11:45:28Z (10 months ago)
From
Fermi GBM Team at MSFC/Fermi-GBM <do_not_reply@GIOC.nsstc.nasa.gov>
Via
email
The Fermi GBM team reports the detection of a likely LONG GRB
At 11:34:55 UT on 14 Aug 2024, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 240814B (trigger 745328100.447814 / 240814483).
The on-ground calculated location, using the Fermi GBM trigger data, is RA = 38.1, Dec = 51.2 (J2000 degrees, equivalent to J2000 02h 32m, 51d 12'), with a statistical uncertainty of 4.0 degrees.
The angle from the Fermi LAT boresight is 6.0 degrees.
The skymap can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2024/bn240814483/quicklook/glg_skymap_all_bn240814483.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/bn240814483/quicklook/glg_healpix_all_bn240814483.fit
The GBM light curve can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2024/bn240814483/quicklook/glg_lc_medres34_bn240814483.gif
GCN Circular 37180
Subject
Fermi GRB 240814B: Global MASTER-Net observations report
Date
2024-08-14T18:15:34Z (10 months ago)
From
Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov@xray.sai.msu.ru>
Via
legacy email
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-Tavrida robotic telescope (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L) located in Russia (Lomonosov MSU, SAI Crimea astronomical station) started inspect of the Fermi GRB 240814B ( Fermi GBM team, GCN 37177) errorbox 22090 sec after notice time and 22114 sec after trigger time at 2024-08-14 17:43:29 UT, with upper limit up to 16.9 mag. Observations started at twilight. The observations began at zenith distance = 76 deg. The sun altitude is -9.7 deg.
The galactic latitude b = -8 deg., longitude l = 139 deg.
Real time updated cover map and OT discovered available here:
https://master.sai.msu.ru/site/master2/observ.php?id=2563467
We obtain a following upper limits.
Tmid-T0 | Date Time | Site | Coord (J2000) |Filt.| Expt. | Limit| Comment
_________|_____________________|_____________________|____________________________________|_____|_______|_______|________
22145 | 2024-08-14 17:43:29 | MASTER-Tavrida | (02h 24m 41.16s , +51d 52m 37.8s) | C | 60 | 15.0 |
22145 | 2024-08-14 17:43:30 | MASTER-Tavrida | (02h 24m 26.27s , +51d 57m 16.0s) | C | 60 | 12.0 |
22220 | 2024-08-14 17:44:45 | MASTER-Tavrida | (02h 37m 31.15s , +51d 53m 16.3s) | C | 60 | 14.9 |
22220 | 2024-08-14 17:44:45 | MASTER-Tavrida | (02h 37m 15.98s , +51d 57m 59.8s) | C | 60 | 12.0 |
22295 | 2024-08-14 17:46:00 | MASTER-Tavrida | (02h 20m 38.10s , +50d 34m 02.2s) | C | 60 | 15.3 |
22295 | 2024-08-14 17:46:00 | MASTER-Tavrida | (02h 20m 23.13s , +50d 38m 46.5s) | C | 60 | 13.1 |
22369 | 2024-08-14 17:47:14 | MASTER-Tavrida | (02h 33m 12.20s , +50d 34m 12.2s) | C | 60 | 15.5 |
22444 | 2024-08-14 17:48:29 | MASTER-Tavrida | (02h 28m 57.00s , +53d 10m 31.9s) | C | 60 | 15.8 |
22444 | 2024-08-14 17:48:29 | MASTER-Tavrida | (02h 28m 40.34s , +53d 15m 25.7s) | C | 60 | 15.2 |
22518 | 2024-08-14 17:49:43 | MASTER-Tavrida | (02h 42m 15.06s , +53d 13m 25.0s) | C | 60 | 15.7 |
22519 | 2024-08-14 17:49:44 | MASTER-Tavrida | (02h 41m 58.41s , +53d 18m 18.6s) | C | 60 | 14.6 |
22592 | 2024-08-14 17:50:57 | MASTER-Tavrida | (02h 36m 55.25s , +50d 33m 47.5s) | C | 60 | 15.8 |
22593 | 2024-08-14 17:50:58 | MASTER-Tavrida | (02h 36m 39.43s , +50d 38m 41.3s) | C | 60 | 13.0 |
22667 | 2024-08-14 17:52:12 | MASTER-Tavrida | (02h 49m 33.58s , +50d 35m 55.5s) | C | 60 | 15.4 |
22667 | 2024-08-14 17:52:12 | MASTER-Tavrida | (02h 49m 17.63s , +50d 40m 50.3s) | C | 60 | 12.6 |
22742 | 2024-08-14 17:53:27 | MASTER-Tavrida | (02h 32m 47.53s , +49d 14m 38.2s) | C | 60 | 16.1 |
22742 | 2024-08-14 17:53:27 | MASTER-Tavrida | (02h 32m 32.07s , +49d 19m 32.4s) | C | 60 | 12.9 |
22817 | 2024-08-14 17:54:42 | MASTER-Tavrida | (02h 45m 04.15s , +49d 17m 38.7s) | C | 60 | 15.8 |
22817 | 2024-08-14 17:54:42 | MASTER-Tavrida | (02h 44m 48.69s , +49d 22m 32.9s) | C | 60 | 12.1 |
22891 | 2024-08-14 17:55:56 | MASTER-Tavrida | (02h 41m 22.02s , +51d 54m 08.3s) | C | 60 | 16.1 |
22891 | 2024-08-14 17:55:56 | MASTER-Tavrida | (02h 41m 06.12s , +51d 59m 02.7s) | C | 60 | 13.8 |
22966 | 2024-08-14 17:57:11 | MASTER-Tavrida | (02h 54m 23.09s , +51d 54m 55.6s) | C | 60 | 16.1 |
23042 | 2024-08-14 17:58:27 | MASTER-Tavrida | (02h 24m 34.54s , +51d 49m 29.0s) | C | 60 | 16.5 |
23043 | 2024-08-14 17:58:27 | MASTER-Tavrida | (02h 24m 18.65s , +51d 54m 24.7s) | C | 60 | 16.3 |
23117 | 2024-08-14 17:59:42 | MASTER-Tavrida | (02h 16m 53.26s , +49d 13m 54.9s) | C | 60 | 16.7 |
23117 | 2024-08-14 17:59:42 | MASTER-Tavrida | (02h 16m 38.07s , +49d 18m 49.8s) | C | 60 | 16.9 |
23192 | 2024-08-14 18:00:57 | MASTER-Tavrida | (02h 29m 06.44s , +49d 13m 42.3s) | C | 60 | 16.6 |
23192 | 2024-08-14 18:00:57 | MASTER-Tavrida | (02h 28m 51.25s , +49d 18m 37.0s) | C | 60 | 15.9 |
23272 | 2024-08-14 18:02:17 | MASTER-Tavrida | (02h 37m 36.11s , +51d 52m 43.4s) | C | 60 | 16.7 |
Filter C is a clear (unfiltred) band.
The observation and reduction will continue.
The message may be cited.
GCN Circular 37190
Subject
GRB 240814B: GRBAlpha detection
Date
2024-08-16T16:23:13Z (9 months ago)
From
Marianna Dafčíková at Masaryk University <500025@mail.muni.cz>
Via
Web form
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 240814B (Fermi/GBM detection: GCN 37177) 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 2024-08-14 11:34:56.0 UTC. The T90 duration measured by GRBAlpha is 7.0 s and the overall significance during T90 reaches 5.9 sigma.
The light curve obtained by GRBAlpha is available here: https://grbalpha.konkoly.hu/static/share/GRB240814B_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.