GRB 241207A
GCN Circular 38454
Subject
GRB 241207A: Fermi GBM Final Real-time Localization
Date
2024-12-07T09:04:41Z (6 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 08:54:10 UT on 7 Dec 2024, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 241207A (trigger 755254455.17509 / 241207371).
The on-ground calculated location, using the Fermi GBM trigger data, is RA = 287.5, Dec = 42.5 (J2000 degrees, equivalent to J2000 19h 10m, 42d 30'), with a statistical uncertainty of 1.6 degrees.
The angle from the Fermi LAT boresight is 41.0 degrees.
The skymap can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2024/bn241207371/quicklook/glg_skymap_all_bn241207371.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/bn241207371/quicklook/glg_healpix_all_bn241207371.fit
The GBM light curve can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2024/bn241207371/quicklook/glg_lc_medres34_bn241207371.gif
GCN Circular 38459
Subject
Fermi GRB 241207A: Global MASTER-Net observations report
Date
2024-12-07T16:30:51Z (6 months ago)
From
Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov@xray.sai.msu.ru>
Via
legacy email
V.Lipunov, E.Gorbovskoy, N.Tiurina, P.Balanutsa, , D.Vlasenko, I.Panchenko,
A.Kuznetsov, G.Antipov, A.Sankovich, A.Sosnovskij, Yu.Tselik, M.Gulyaev, Ya.Kechin,
V.Senik, A.Chasovnikov, K.Labsina, I. Gorbunov (Lomonosov MSU),
O.Gress, N.Budnev (ISU),
C.Francile, F. Podesta, R.Podesta, E. Gonzalez (Observatorio Astronomico Felix Aguilar (OAFA),
A. Tlatov, D. Dormidontov (Kislovodsk Solar Station of the Pulkovo Observatory),
A. Gabovich, V.Yurkov (Blagoveschensk Educational StateUniversity)
D.Buckley (SAAO),
R.Rebolo (The Instituto de Astrofisica de Canarias),
L.Carrasco, J.R.Valdes, V.Chavushyan, V.M.Patino Alvarez, J.Martinez,
A.R.Corella, L.H.Rodriguez (INAOE, Guillermo Haro Astrophysics Observatory)
MASTER-Kislovodsk robotic telescope (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L) located in Russia (Lomonosov MSU, Kislovodsk Solar Station of Pulkovo observatory) started inspect of the Fermi GRB 241207A ( Fermi GBM team, GCN 38454) errorbox 21312 sec after notice time and 21345 sec after trigger time at 2024-12-07 14:49:56 UT, with upper limit up to 13.8 mag. Observations started at twilight. The observations began at zenith distance = 40 deg. The sun altitude is -13.1 deg.
The galactic latitude b = 15 deg., longitude l = 74 deg.
Real time updated cover map and OT discovered available here:
https://master.sai.msu.ru/site/master2/observ.php?id=2699110
We obtain a following upper limits.
Tmid-T0 | Date Time | Site | Coord (J2000) |Filt.| Expt. | Limit| Comment
_________|_____________________|_____________________|____________________________________|_____|_______|_______|________
21376 | 2024-12-07 14:49:56 | MASTER-Kislovodsk | (19h 03m 22.81s , +41d 07m 36.2s) | C | 60 | 13.4 |
21455 | 2024-12-07 14:51:15 | MASTER-Kislovodsk | (19h 13m 57.59s , +41d 09m 08.7s) | C | 60 | 13.1 |
21535 | 2024-12-07 14:52:35 | MASTER-Kislovodsk | (19h 03m 17.27s , +41d 07m 37.7s) | C | 60 | 13.5 |
21615 | 2024-12-07 14:53:54 | MASTER-Kislovodsk | (19h 13m 58.45s , +41d 09m 30.4s) | C | 60 | 13.1 |
21694 | 2024-12-07 14:55:14 | MASTER-Kislovodsk | (19h 03m 14.93s , +41d 07m 36.5s) | C | 60 | 13.7 |
22171 | 2024-12-07 15:03:11 | MASTER-Kislovodsk | (18h 56m 24.51s , +43d 01m 02.1s) | C | 60 | 13.3 |
22250 | 2024-12-07 15:04:30 | MASTER-Kislovodsk | (19h 07m 25.56s , +43d 01m 02.7s) | C | 60 | 13.5 |
22409 | 2024-12-07 15:07:09 | MASTER-Kislovodsk | (19h 07m 26.66s , +43d 01m 01.0s) | C | 60 | 13.6 |
22489 | 2024-12-07 15:08:28 | MASTER-Kislovodsk | (18h 56m 29.53s , +43d 02m 36.0s) | C | 60 | 12.8 |
22647 | 2024-12-07 15:11:07 | MASTER-Kislovodsk | (19h 13m 55.45s , +41d 08m 49.0s) | C | 60 | 12.5 |
22727 | 2024-12-07 15:12:27 | MASTER-Kislovodsk | (19h 13m 59.34s , +41d 07m 45.4s) | C | 60 | 13.2 |
22807 | 2024-12-07 15:13:46 | MASTER-Kislovodsk | (19h 03m 13.79s , +41d 05m 56.4s) | C | 60 | 13.8 |
23197 | 2024-12-07 15:20:17 | MASTER-Kislovodsk | (19h 03m 22.66s , +41d 06m 14.1s) | C | 60 | 13.2 |
23277 | 2024-12-07 15:21:37 | MASTER-Kislovodsk | (19h 03m 14.00s , +41d 07m 51.8s) | C | 60 | 13.4 |
23436 | 2024-12-07 15:24:15 | MASTER-Kislovodsk | (19h 07m 28.58s , +43d 02m 06.4s) | C | 60 | 13.3 |
23515 | 2024-12-07 15:25:35 | MASTER-Kislovodsk | (19h 07m 18.91s , +43d 01m 07.5s) | C | 60 | 13.5 |
23674 | 2024-12-07 15:28:14 | MASTER-Kislovodsk | (18h 56m 25.80s , +43d 00m 27.7s) | C | 60 | 13.6 |
23754 | 2024-12-07 15:29:33 | MASTER-Kislovodsk | (18h 56m 20.59s , +42d 59m 22.8s) | C | 60 | 13.3 |
23833 | 2024-12-07 15:30:53 | MASTER-Kislovodsk | (18h 56m 27.11s , +42d 59m 38.4s) | C | 60 | 13.6 |
24228 | 2024-12-07 15:37:27 | MASTER-Kislovodsk | (19h 13m 57.23s , +41d 07m 48.2s) | C | 60 | 12.9 |
24307 | 2024-12-07 15:38:47 | MASTER-Kislovodsk | (19h 13m 57.13s , +41d 06m 21.3s) | C | 60 | 12.3 |
24387 | 2024-12-07 15:40:06 | MASTER-Kislovodsk | (19h 13m 53.77s , +41d 07m 43.1s) | C | 60 | 13.3 |
24466 | 2024-12-07 15:41:26 | MASTER-Kislovodsk | (19h 03m 16.22s , +41d 06m 25.5s) | C | 60 | 13.1 |
24625 | 2024-12-07 15:44:05 | MASTER-Kislovodsk | (19h 03m 21.97s , +41d 06m 18.7s) | C | 60 | 13.1 |
24785 | 2024-12-07 15:46:44 | MASTER-Kislovodsk | (19h 07m 28.06s , +42d 59m 25.6s) | C | 60 | 13.2 |
24864 | 2024-12-07 15:48:04 | MASTER-Kislovodsk | (19h 07m 25.84s , +43d 00m 54.0s) | C | 60 | 13.2 |
25910 | 2024-12-07 16:05:30 | MASTER-Kislovodsk | (19h 07m 24.53s , +42d 59m 11.6s) | C | 60 | 12.6 |
26070 | 2024-12-07 16:08:09 | MASTER-Kislovodsk | (18h 56m 21.32s , +42d 59m 49.2s) | C | 60 | 12.4 |
26149 | 2024-12-07 16:09:29 | MASTER-Kislovodsk | (18h 56m 23.28s , +43d 00m 14.5s) | C | 60 | 13.0 |
26308 | 2024-12-07 16:12:08 | MASTER-Kislovodsk | (19h 13m 49.46s , +41d 05m 15.2s) | C | 60 | 12.6 |
26387 | 2024-12-07 16:13:27 | MASTER-Kislovodsk | (19h 13m 56.34s , +41d 04m 45.4s) | C | 60 | 12.5 |
26467 | 2024-12-07 16:14:47 | MASTER-Kislovodsk | (19h 13m 54.67s , +41d 06m 11.2s) | C | 60 | 12.6 |
26546 | 2024-12-07 16:16:06 | MASTER-Kislovodsk | (19h 03m 16.67s , +41d 04m 29.6s) | C | 60 | 12.6 |
Filter C is a clear (unfiltred) band.
The observation and reduction will continue.
The message may be cited.
GCN Circular 38536
Subject
GRB 241207A: EIRSAT-1 GMOD Detection
Date
2024-12-11T14:44:53Z (6 months ago)
From
Caimin McKenna at University College Dublin <caimin.mckenna@ucdconnect.ie>
Via
Web form
C. McKenna, D. Murphy, C. de Barra, A. Ulyanov, P. McDermott, M. Doyle, R. Dunwoody, J. Mangan, G. Finneran, G. Corcoran, L. Cotter, A. Empey, J. Fisher, F. Gibson Kiely, J. Thompson, D. McKeown, A. Martin-Carrillo, L. Hanlon, S. McBreen, on behalf of the EIRSAT-1 team:
EIRSAT-1 reports the tentative detection of the long gamma-ray burst GRB 241207A by the Gamma-ray Module (GMOD) instrument, which was also detected by Fermi GBM (GCN 38454). The detection was made starting at 24-12-07 08:54:08.1 UTC.
The GMOD light curve for GRB 241207A with 1.2s binning shows a long burst with multiple pulses. The timing of the pulses is in broad agreement with those seen in the Fermi GBM lightcurve. The spacecraft location at the time of detection was 4.325 N, 19.089 E at an altitude of 460.2 km.
The GMOD light curve for this event can be found here:
https://grb.eirsat1.ie/241207A/241207A_LC_onboard_preliminary.png
EIRSAT-1 is Ireland’s first satellite (Doyle et al. Proceedings of the 4th SSEA, 2022). It is a 2U CubeSat and carries onboard a number of experiments including the Gamma-Ray Module (GMOD), a novel, compact, gamma-ray detector (Murphy et al, Experimental Astronomy, 53, 961–990, 2022). GMOD consists of a 25 mm × 25 mm × 40 mm Cerium Bromide scintillator coupled to SiPMs and is designed to detect gamma-ray bursts in the ~ 60 keV - 1.5 MeV range. EIRSAT-1 was developed in University College Dublin with support from ESA’s Fly Your Satellite! programme and was launched on 1st December 2023.
GCN Circular 38542
Subject
GRB 241207A: TSHAO Zeiss-1000 optical observations
Date
2024-12-12T14:19:10Z (6 months ago)
From
Nicolai Pankov at HSE, IKI RAS <colinsergesen@gmail.com>
Via
Web form
N. Pankov (HSE, IKI), I. Reva (FAI), M. Krugov (FAI), A. Pozanenko (IKI) report on behalf of IKI-GRB-FuN:
We performed optical observations of GRB 241207A (Fermi GBM team, GCN 38454; V.Lipunov et. al, GCN 38459; McKenna et. al, GCN 38536) in the R filter with 1-meter Zeiss-1000 telescope of Tien-Shan observatory (TSHAO). The observations began on 2024-12-07 13:04:43 UT, i.e. ~0.17 days since trigger. Using STDWeb (Karpov, 2024) ZOGY-based image subtraction against ZTF DR7 we did not find an optical candidate transient in the median stacked images of the fields:
FieldID RA Dec Width Height
(hr) (deg) (arcmin)
1 19:15:05 +42:01:05 19.03 19.03
2 19:09:58 +42:29:55 19.03 19.03
The preliminary upper limits are as follows:
Date UT start t-T0 Exp. Filter OT Err. UL(3sigma) FieldID
(mid, days) (s)
2024-12-07 13:04:43 0.176087 4*90 R n/d n/d 20.3 1
2024-12-07 13:15:56 0.206782 48*90 R n/d n/d 20.8 2
The magnitudes were calibrated using nearby stars from USNO-B1.0 (R2 magnitudes) and are not corrected for the Galactic extinction towards the GRB 241207A.