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GCN Circular 36119

Subject
Fermi GRB 240415A: Global MASTER-Net observations report
Date
2024-04-15T19:15:28Z (3 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 240415A ( Fermi GBM team, GCN 36107) errorbox  43102 sec after notice time and 43137 sec after trigger time at 2024-04-15 18:25:55 UT, with upper limit up to  18.7 mag. The observations began at zenith distance = 35 deg. The sun  altitude  is -20.0 deg. 

MASTER-Kislovodsk robotic telescope  located in Russia (Lomonosov MSU, Kislovodsk Solar Station of Pulkovo observatory) started inspect of the Fermi GRB 240415A errorbox  43114 sec after notice time and 43149 sec after trigger time at 2024-04-15 18:26:07 UT, with upper limit up to  18.6 mag. The observations began at zenith distance = 38 deg. The sun  altitude  is -25.1 deg. 

The galactic latitude b = 42 deg., longitude l = 120 deg.


Real time updated cover map and OT discovered available here: 
https://master.sai.msu.ru/site/master2/observ.php?id=2423215

We obtain a following upper limits.  

Tmid-T0  |      Date Time      |          Site       |             Coord (J2000)          |Filt.| Expt. | Limit| Comment
_________|_____________________|_____________________|____________________________________|_____|_______|_______|________

   43168 | 2024-04-15 18:25:55 |      MASTER-Tavrida | (12h 41m 57.43s , +75d 02m 45.2s) |   C |    60 | 18.3 |        
   43180 | 2024-04-15 18:26:07 |   MASTER-Kislovodsk | (13h 58m 04.46s , +75d 29m 04.7s) |   C |    60 | 17.6 |        
   43180 | 2024-04-15 18:26:07 |   MASTER-Kislovodsk | (14h 14m 02.58s , +75d 02m 20.5s) |   C |    60 | 18.5 |        
   43260 | 2024-04-15 18:27:27 |   MASTER-Kislovodsk | (13h 22m 54.58s , +79d 18m 44.3s) |   C |    60 | 17.8 |        
   43260 | 2024-04-15 18:27:27 |   MASTER-Kislovodsk | (13h 44m 16.06s , +78d 51m 50.7s) |   C |    60 | 18.5 |        
   43340 | 2024-04-15 18:28:47 |   MASTER-Kislovodsk | (13h 17m 15.80s , +73d 35m 59.5s) |   C |    60 | 17.8 |        
   43340 | 2024-04-15 18:28:47 |   MASTER-Kislovodsk | (13h 31m 44.89s , +73d 10m 02.8s) |   C |    60 | 18.5 |        
   43374 | 2024-04-15 18:29:21 |      MASTER-Tavrida | (13h 24m 13.00s , +76d 57m 02.6s) |   C |    60 | 18.4 |        
   43420 | 2024-04-15 18:30:07 |   MASTER-Kislovodsk | (12h 51m 52.86s , +76d 57m 52.8s) |   C |    60 | 18.3 |        
   43420 | 2024-04-15 18:30:07 |   MASTER-Kislovodsk | (12h 33m 18.95s , +77d 23m 31.1s) |   C |    60 | 17.5 |        
   43446 | 2024-04-15 18:30:33 |      MASTER-Tavrida | (13h 56m 37.00s , +73d 10m 16.5s) |   C |    60 | 18.3 |        
   43518 | 2024-04-15 18:31:45 |      MASTER-Tavrida | (13h 21m 10.17s , +71d 15m 43.7s) |   C |    60 | 18.4 |        
   43593 | 2024-04-15 18:33:00 |      MASTER-Tavrida | (11h 42m 00.08s , +75d 01m 17.2s) |   C |    60 | 18.5 |        
   43666 | 2024-04-15 18:34:13 |      MASTER-Tavrida | (12h 33m 06.72s , +71d 13m 56.3s) |   C |    60 | 18.6 |        
   43701 | 2024-04-15 18:34:48 |   MASTER-Kislovodsk | (14h 44m 19.50s , +79d 16m 36.9s) |   C |    60 | 17.6 |        
   43701 | 2024-04-15 18:34:48 |   MASTER-Kislovodsk | (15h 05m 01.93s , +78d 48m 27.9s) |   C |    60 | 18.4 |        
   43781 | 2024-04-15 18:36:08 |   MASTER-Kislovodsk | (12h 55m 54.06s , +81d 11m 28.9s) |   C |    60 | 17.8 |        
   43781 | 2024-04-15 18:36:08 |   MASTER-Kislovodsk | (13h 21m 39.24s , +80d 44m 24.4s) |   C |    60 | 18.4 |        
   43861 | 2024-04-15 18:37:28 |   MASTER-Kislovodsk | (14h 51m 26.51s , +77d 23m 02.0s) |   C |    60 | 17.5 |        
   43861 | 2024-04-15 18:37:28 |   MASTER-Kislovodsk | (15h 09m 51.40s , +76d 55m 31.1s) |   C |    60 | 18.2 |        
   43942 | 2024-04-15 18:38:49 |   MASTER-Kislovodsk | (12h 23m 31.82s , +73d 36m 49.8s) |   C |    60 | 17.9 |        
   43942 | 2024-04-15 18:38:49 |   MASTER-Kislovodsk | (12h 38m 13.66s , +73d 11m 56.7s) |   C |    60 | 18.6 |        
   43947 | 2024-04-15 18:38:54 |      MASTER-Tavrida | (11h 40m 21.90s , +79d 27m 06.2s) |   C |    60 | 18.5 |        
   44242 | 2024-04-15 18:43:49 |      MASTER-Tavrida | (12h 41m 57.04s , +75d 02m 13.5s) |   C |    60 | 18.6 |        
   44269 | 2024-04-15 18:44:16 |   MASTER-Kislovodsk | (14h 14m 03.95s , +75d 02m 14.5s) |   C |    60 | 18.2 |        
   44269 | 2024-04-15 18:44:16 |   MASTER-Kislovodsk | (13h 57m 52.27s , +75d 28m 52.9s) |   C |    60 | 17.5 |        
   44314 | 2024-04-15 18:45:01 |      MASTER-Tavrida | (13h 13m 41.15s , +75d 02m 50.4s) |   C |    60 | 18.6 |        
   44350 | 2024-04-15 18:45:37 |   MASTER-Kislovodsk | (13h 44m 12.27s , +78d 52m 16.9s) |   C |    60 | 18.1 |        
   44350 | 2024-04-15 18:45:37 |   MASTER-Kislovodsk | (13h 22m 33.47s , +79d 19m 00.8s) |   C |    60 | 17.5 |        
   44384 | 2024-04-15 18:46:11 |      MASTER-Tavrida | (13h 24m 18.65s , +76d 58m 13.6s) |   C |    60 | 18.5 |        
   44429 | 2024-04-15 18:46:57 |   MASTER-Kislovodsk | (13h 16m 59.43s , +73d 35m 27.9s) |   C |    60 | 17.5 |        
   44429 | 2024-04-15 18:46:57 |   MASTER-Kislovodsk | (13h 31m 36.58s , +73d 09m 38.3s) |   C |    60 | 18.3 |        
   44455 | 2024-04-15 18:47:22 |      MASTER-Tavrida | (14h 00m 34.32s , +76d 57m 07.8s) |   C |    60 | 18.3 |        
   44510 | 2024-04-15 18:48:17 |   MASTER-Kislovodsk | (12h 33m 08.21s , +77d 25m 41.9s) |   C |    60 | 17.4 |        
   44510 | 2024-04-15 18:48:17 |   MASTER-Kislovodsk | (12h 51m 56.28s , +77d 00m 14.0s) |   C |    60 | 18.2 |        
   44525 | 2024-04-15 18:48:33 |      MASTER-Tavrida | (13h 56m 47.31s , +73d 10m 32.5s) |   C |    60 | 18.4 |        
   44590 | 2024-04-15 18:49:37 |   MASTER-Kislovodsk | (14h 21m 25.41s , +71d 41m 13.5s) |   C |    60 | 17.3 |        
   44590 | 2024-04-15 18:49:37 |   MASTER-Kislovodsk | (14h 34m 39.37s , +71d 15m 19.0s) |   C |    60 | 18.1 |        
   44597 | 2024-04-15 18:49:44 |      MASTER-Tavrida | (14h 24m 47.23s , +73d 10m 17.6s) |   C |    60 | 18.3 |        
   44670 | 2024-04-15 18:50:57 |   MASTER-Kislovodsk | (14h 43m 16.62s , +79d 17m 39.9s) |   C |    60 | 17.5 |        
   44670 | 2024-04-15 18:50:57 |   MASTER-Kislovodsk | (15h 04m 56.57s , +78d 49m 56.8s) |   C |    60 | 18.3 |        
   44877 | 2024-04-15 18:54:24 |      MASTER-Tavrida | (13h 21m 14.79s , +71d 15m 40.9s) |   C |    60 | 18.5 |        
   44950 | 2024-04-15 18:55:37 |   MASTER-Kislovodsk | (12h 55m 52.40s , +81d 11m 20.1s) |   C |    60 | 17.3 |        
   44950 | 2024-04-15 18:55:37 |   MASTER-Kislovodsk | (13h 21m 27.72s , +80d 44m 44.2s) |   C |    60 | 17.9 |        
   45031 | 2024-04-15 18:56:58 |   MASTER-Kislovodsk | (14h 51m 29.36s , +77d 21m 43.6s) |   C |    60 | 17.0 |        
   45031 | 2024-04-15 18:56:58 |   MASTER-Kislovodsk | (15h 09m 43.58s , +76d 54m 21.0s) |   C |    60 | 17.6 |        
   45111 | 2024-04-15 18:58:18 |   MASTER-Kislovodsk | (12h 23m 29.80s , +73d 37m 50.3s) |   C |    60 | 17.4 |        
   45111 | 2024-04-15 18:58:18 |   MASTER-Kislovodsk | (12h 38m 11.43s , +73d 13m 26.0s) |   C |    60 | 18.0 |        
   45165 | 2024-04-15 18:59:12 |      MASTER-Tavrida | (13h 46m 25.65s , +71d 16m 16.2s) |   C |    60 | 18.4 |        
   45191 | 2024-04-15 18:59:38 |   MASTER-Kislovodsk | (13h 57m 39.21s , +75d 28m 58.0s) |   C |    60 | 17.2 |        
   45191 | 2024-04-15 18:59:38 |   MASTER-Kislovodsk | (14h 13m 58.40s , +75d 03m 07.1s) |   C |    60 | 17.8 |        
   45240 | 2024-04-15 19:00:27 |      MASTER-Tavrida | (11h 42m 12.12s , +75d 01m 49.4s) |   C |    60 | 18.5 |        
   45271 | 2024-04-15 19:00:58 |   MASTER-Kislovodsk | (13h 22m 29.72s , +79d 18m 43.9s) |   C |    60 | 17.2 |        
   45271 | 2024-04-15 19:00:58 |   MASTER-Kislovodsk | (13h 44m 13.71s , +78d 52m 49.5s) |   C |    60 | 17.9 |        
   45317 | 2024-04-15 19:01:44 |      MASTER-Tavrida | (12h 13m 40.94s , +75d 01m 28.4s) |   C |    60 | 18.7 |        
   45351 | 2024-04-15 19:02:18 |   MASTER-Kislovodsk | (13h 16m 54.83s , +73d 36m 29.9s) |   C |    60 | 17.3 |        
   45351 | 2024-04-15 19:02:18 |   MASTER-Kislovodsk | (13h 31m 32.67s , +73d 11m 28.0s) |   C |    60 | 17.8 |        
   45388 | 2024-04-15 19:02:55 |      MASTER-Tavrida | (12h 33m 18.22s , +71d 13m 42.0s) |   C |    60 | 18.6 |        
   45432 | 2024-04-15 19:03:39 |   MASTER-Kislovodsk | (12h 32m 59.58s , +77d 25m 49.4s) |   C |    60 | 17.2 |        
   45432 | 2024-04-15 19:03:39 |   MASTER-Kislovodsk | (12h 51m 46.06s , +77d 01m 20.2s) |   C |    60 | 17.9 |        
   45460 | 2024-04-15 19:04:07 |      MASTER-Tavrida | (12h 58m 31.22s , +71d 15m 36.2s) |   C |    60 | 18.7 |        
   45512 | 2024-04-15 19:04:59 |   MASTER-Kislovodsk | (14h 21m 31.48s , +71d 41m 32.0s) |   C |    60 | 17.0 |        
   45512 | 2024-04-15 19:04:59 |   MASTER-Kislovodsk | (14h 34m 42.40s , +71d 16m 12.0s) |   C |    60 | 17.8 |        
   45533 | 2024-04-15 19:05:20 |      MASTER-Tavrida | (11h 41m 07.92s , +78d 48m 47.3s) |   C |    60 | 18.6 |        
   45593 | 2024-04-15 19:06:20 |   MASTER-Kislovodsk | (14h 43m 17.06s , +79d 15m 58.1s) |   C |    60 | 17.1 |        
   45593 | 2024-04-15 19:06:20 |   MASTER-Kislovodsk | (15h 04m 49.15s , +78d 49m 00.0s) |   C |    60 | 17.8 |        
   45605 | 2024-04-15 19:06:32 |      MASTER-Tavrida | (12h 23m 34.35s , +78d 51m 09.5s) |   C |    60 | 18.6 |        
   45673 | 2024-04-15 19:07:40 |   MASTER-Kislovodsk | (14h 57m 50.89s , +75d 27m 52.6s) |   C |    60 | 17.0 |        
   45753 | 2024-04-15 19:09:00 |   MASTER-Kislovodsk | (13h 47m 36.20s , +69d 49m 09.2s) |   C |    60 | 17.1 |        
   45753 | 2024-04-15 19:09:00 |   MASTER-Kislovodsk | (13h 59m 42.52s , +69d 24m 28.3s) |   C |    60 | 17.8 |        
   45833 | 2024-04-15 19:10:20 |   MASTER-Kislovodsk | (14h 59m 12.52s , +80d 42m 48.6s) |   C |    60 | 17.8 |        
   45894 | 2024-04-15 19:11:22 |      MASTER-Tavrida | (12h 42m 08.42s , +75d 03m 32.5s) |   C |    60 | 18.6 |        
   45966 | 2024-04-15 19:12:33 |      MASTER-Tavrida | (13h 13m 51.27s , +75d 02m 51.3s) |   C |    60 | 18.6 |        
Filter C is a clear (unfiltred) band. 


The observation and reduction will continue. 
The message may be cited.


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