GCN Circular 44012
Subject
Fermi trigger No 795185313: Global MASTER-Net observations report
Date
2026-03-15T03:30:44Z (3 days ago)
From
Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov@xray.sai.msu.ru>
Via
email
V.Lipunov, E.Gorbovskoy, A.Kuznetsov, K.Zhirkov, I.Panchenko, N.Tiurina, P.Balanutsa, V.Topolev, D.Vlasenko,
G.Antipov, A.Sankovich, Yu.Tselik, 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.Sosnovskij (CrAO),
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-OAFA robotic telescope [1] located in Argentina (OAFA observatory of San Juan National University) started inspect of the Fermi GRB260314.53 (trigger No 795185313,14h 23m 00.00s , -11d 19m 58.8s, R=50) errorbox 48826 sec after notice time and 48862 sec after trigger time at 2026-03-15 02:22:50 UT, with upper limit up to 20.4 mag. The observations began at zenith distance = 45 deg. The sun altitude is -42.8 deg.
The galactic latitude b = 45 deg., longitude l = 337 deg.
Real time updated cover map and OT discovered available here:
https://master.sai.msu.ru/site/master2/observ.php?id=3186061
We obtain a following upper limits.
Tmid-T0 | Date Time | Site | Coord (J2000) |Filt.| Expt. | Limit| Comment
_________|_____________________|_____________________|____________________________________|_____|_______|_______|________
48883 | 2026-03-15 02:22:50 | MASTER-OAFA | (11h 42m 55.30s , -01d 47m 48.0s) | C | 40 | 19.7 |
48943 | 2026-03-15 02:22:50 | MASTER-OAFA | (11h 42m 55.30s , -01d 47m 48.0s) | C | 160 | 20.4 | Coadd
48934 | 2026-03-15 02:23:36 | MASTER-OAFA | (11h 42m 55.23s , -01d 47m 46.9s) | C | 50 | 19.8 |
48999 | 2026-03-15 02:24:32 | MASTER-OAFA | (11h 42m 55.19s , -01d 47m 45.7s) | C | 70 | 19.9 |
49081 | 2026-03-15 02:25:48 | MASTER-OAFA | (11h 42m 55.10s , -01d 47m 45.0s) | C | 80 | 19.9 |
49191 | 2026-03-15 02:25:48 | MASTER-OAFA | (11h 42m 55.10s , -01d 47m 45.0s) | C | 300 | 20.0 | Coadd
49177 | 2026-03-15 02:27:15 | MASTER-OAFA | (11h 42m 54.96s , -01d 47m 43.8s) | C | 100 | 20.0 |
49293 | 2026-03-15 02:29:01 | MASTER-OAFA | (11h 42m 54.80s , -01d 47m 42.7s) | C | 120 | 20.1 |
49429 | 2026-03-15 02:31:07 | MASTER-OAFA | (11h 42m 54.61s , -01d 47m 41.6s) | C | 140 | 20.2 |
49544 | 2026-03-15 02:31:07 | MASTER-OAFA | (11h 42m 54.61s , -01d 47m 41.6s) | C | 370 | 20.0 | Coadd
49590 | 2026-03-15 02:33:33 | MASTER-OAFA | (11h 42m 54.38s , -01d 47m 40.7s) | C | 170 | 20.3 |
49711 | 2026-03-15 02:36:29 | MASTER-OAFA | (11h 42m 54.21s , -01d 47m 40.3s) | C | 60 | 19.8 |
49777 | 2026-03-15 02:37:35 | MASTER-OAFA | (11h 42m 54.10s , -01d 47m 40.2s) | C | 60 | 19.9 |
49837 | 2026-03-15 02:37:35 | MASTER-OAFA | (11h 42m 54.10s , -01d 47m 40.1s) | C | 180 | 20.4 | Coadd
49843 | 2026-03-15 02:38:40 | MASTER-OAFA | (11h 42m 54.00s , -01d 47m 39.9s) | C | 60 | 19.9 |
49909 | 2026-03-15 02:39:47 | MASTER-OAFA | (11h 42m 53.89s , -01d 47m 39.7s) | C | 60 | 19.9 |
49974 | 2026-03-15 02:40:52 | MASTER-OAFA | (11h 42m 53.81s , -01d 47m 39.7s) | C | 60 | 19.9 |
50034 | 2026-03-15 02:40:52 | MASTER-OAFA | (11h 42m 53.81s , -01d 47m 39.7s) | C | 180 | 20.4 | Coadd
50040 | 2026-03-15 02:41:57 | MASTER-OAFA | (11h 42m 53.70s , -01d 47m 39.5s) | C | 60 | 19.8 |
50106 | 2026-03-15 02:43:04 | MASTER-OAFA | (11h 42m 53.59s , -01d 47m 39.7s) | C | 60 | 19.9 |
50172 | 2026-03-15 02:44:10 | MASTER-OAFA | (11h 42m 53.49s , -01d 47m 39.9s) | C | 60 | 19.9 |
50232 | 2026-03-15 02:44:10 | MASTER-OAFA | (11h 42m 53.49s , -01d 47m 39.9s) | C | 180 | 20.4 | Coadd
50237 | 2026-03-15 02:45:15 | MASTER-OAFA | (11h 42m 53.37s , -01d 47m 40.1s) | C | 60 | 19.9 |
50304 | 2026-03-15 02:46:21 | MASTER-OAFA | (11h 42m 53.26s , -01d 47m 40.2s) | C | 60 | 19.8 |
50369 | 2026-03-15 02:47:27 | MASTER-OAFA | (11h 42m 53.14s , -01d 47m 40.1s) | C | 60 | 19.9 |
50429 | 2026-03-15 02:47:27 | MASTER-OAFA | (11h 42m 53.14s , -01d 47m 40.1s) | C | 180 | 20.0 | Coadd
50434 | 2026-03-15 02:48:32 | MASTER-OAFA | (11h 42m 53.02s , -01d 47m 40.5s) | C | 60 | 19.9 |
50500 | 2026-03-15 02:49:38 | MASTER-OAFA | (11h 42m 52.89s , -01d 47m 40.4s) | C | 60 | 19.9 |
50566 | 2026-03-15 02:50:44 | MASTER-OAFA | (11h 42m 52.77s , -01d 47m 40.4s) | C | 60 | 19.9 |
50626 | 2026-03-15 02:50:44 | MASTER-OAFA | (11h 42m 52.77s , -01d 47m 40.4s) | C | 180 | 20.4 | Coadd
50632 | 2026-03-15 02:51:49 | MASTER-OAFA | (11h 42m 52.64s , -01d 47m 40.6s) | C | 60 | 19.9 |
50698 | 2026-03-15 02:52:56 | MASTER-OAFA | (11h 42m 52.47s , -01d 47m 40.8s) | C | 60 | 19.9 |
50764 | 2026-03-15 02:54:02 | MASTER-OAFA | (11h 42m 52.36s , -01d 47m 41.4s) | C | 60 | 19.9 |
50824 | 2026-03-15 02:54:02 | MASTER-OAFA | (11h 42m 52.36s , -01d 47m 41.4s) | C | 180 | 20.0 | Coadd
50829 | 2026-03-15 02:55:07 | MASTER-OAFA | (11h 42m 52.22s , -01d 47m 41.7s) | C | 60 | 19.9 |
50896 | 2026-03-15 02:56:13 | MASTER-OAFA | (11h 42m 52.09s , -01d 47m 42.1s) | C | 60 | 19.9 |
50961 | 2026-03-15 02:57:19 | MASTER-OAFA | (11h 42m 51.92s , -01d 47m 42.9s) | C | 60 | 19.9 |
51021 | 2026-03-15 02:57:19 | MASTER-OAFA | (11h 42m 51.92s , -01d 47m 42.9s) | C | 180 | 20.0 | Coadd
51027 | 2026-03-15 02:58:24 | MASTER-OAFA | (11h 42m 51.79s , -01d 47m 43.3s) | C | 60 | 19.9 |
51093 | 2026-03-15 02:59:31 | MASTER-OAFA | (11h 42m 51.62s , -01d 47m 43.7s) | C | 60 | 19.9 |
51159 | 2026-03-15 03:00:36 | MASTER-OAFA | (11h 42m 51.50s , -01d 47m 44.1s) | C | 60 | 19.9 |
51219 | 2026-03-15 03:00:36 | MASTER-OAFA | (11h 42m 51.50s , -01d 47m 44.0s) | C | 180 | 20.0 | Coadd
51224 | 2026-03-15 03:01:42 | MASTER-OAFA | (11h 42m 51.36s , -01d 47m 44.9s) | C | 60 | 19.9 |
51291 | 2026-03-15 03:02:48 | MASTER-OAFA | (11h 42m 51.20s , -01d 47m 45.9s) | C | 60 | 19.9 |
51356 | 2026-03-15 03:03:54 | MASTER-OAFA | (11h 42m 51.07s , -01d 47m 46.3s) | C | 60 | 19.9 |
51416 | 2026-03-15 03:03:54 | MASTER-OAFA | (11h 42m 51.07s , -01d 47m 46.3s) | C | 180 | 20.0 | Coadd
51421 | 2026-03-15 03:04:59 | MASTER-OAFA | (11h 42m 50.89s , -01d 47m 46.6s) | C | 60 | 20.0 |
51488 | 2026-03-15 03:06:06 | MASTER-OAFA | (11h 42m 50.76s , -01d 47m 47.3s) | C | 60 | 19.9 |
51553 | 2026-03-15 03:07:11 | MASTER-OAFA | (11h 42m 50.58s , -01d 47m 48.2s) | C | 60 | 19.9 |
51613 | 2026-03-15 03:07:11 | MASTER-OAFA | (11h 42m 50.58s , -01d 47m 48.2s) | C | 180 | 20.0 | Coadd
51619 | 2026-03-15 03:08:17 | MASTER-OAFA | (11h 42m 50.44s , -01d 47m 49.1s) | C | 60 | 19.9 |
51686 | 2026-03-15 03:09:24 | MASTER-OAFA | (11h 42m 50.31s , -01d 47m 49.8s) | C | 60 | 19.9 |
51751 | 2026-03-15 03:10:29 | MASTER-OAFA | (11h 42m 50.15s , -01d 47m 50.8s) | C | 60 | 19.9 |
51811 | 2026-03-15 03:10:29 | MASTER-OAFA | (11h 42m 50.15s , -01d 47m 50.8s) | C | 180 | 20.0 | Coadd
51816 | 2026-03-15 03:11:34 | MASTER-OAFA | (11h 42m 50.01s , -01d 47m 51.7s) | C | 60 | 19.9 |
51883 | 2026-03-15 03:12:40 | MASTER-OAFA | (11h 42m 49.85s , -01d 47m 53.2s) | C | 60 | 19.9 |
51948 | 2026-03-15 03:13:46 | MASTER-OAFA | (11h 42m 49.69s , -01d 47m 53.9s) | C | 60 | 19.9 |
52008 | 2026-03-15 03:13:46 | MASTER-OAFA | (11h 42m 49.69s , -01d 47m 53.9s) | C | 180 | 20.0 | Coadd
52014 | 2026-03-15 03:14:51 | MASTER-OAFA | (11h 42m 49.52s , -01d 47m 54.8s) | C | 60 | 19.9 |
52080 | 2026-03-15 03:15:58 | MASTER-OAFA | (11h 42m 49.36s , -01d 47m 55.6s) | C | 60 | 19.9 |
52146 | 2026-03-15 03:17:03 | MASTER-OAFA | (11h 42m 49.19s , -01d 47m 56.2s) | C | 60 | 19.9 |
52206 | 2026-03-15 03:17:03 | MASTER-OAFA | (11h 42m 49.19s , -01d 47m 56.2s) | C | 180 | 20.0 | Coadd
52211 | 2026-03-15 03:18:09 | MASTER-OAFA | (11h 42m 49.02s , -01d 47m 57.7s) | C | 60 | 19.9 |
52277 | 2026-03-15 03:19:14 | MASTER-OAFA | (11h 42m 48.86s , -01d 47m 58.8s) | C | 60 | 19.9 |
52342 | 2026-03-15 03:20:20 | MASTER-OAFA | (11h 42m 48.71s , -01d 48m 00.4s) | C | 60 | 19.9 |
52408 | 2026-03-15 03:21:26 | MASTER-OAFA | (11h 42m 48.52s , -01d 48m 01.7s) | C | 60 | 19.9 |
52474 | 2026-03-15 03:22:32 | MASTER-OAFA | (11h 42m 48.36s , -01d 48m 02.8s) | C | 60 | 19.9 |
52540 | 2026-03-15 03:23:37 | MASTER-OAFA | (11h 42m 48.20s , -01d 48m 04.0s) | C | 60 | 19.9 |
52605 | 2026-03-15 03:24:43 | MASTER-OAFA | (11h 42m 48.01s , -01d 48m 05.0s) | C | 60 | 19.9 |
Filter C is a clear (unfiltred) band.
The observation and reduction will continue.
The message may be cited.
[1] - V.M. Lipunov, V.G. Kornilov, E.S. Gorbovskoy, N.A. Tiurina & A.S.Kuznetsov, 2023, Astronomical Robotic Networks and Operative Multichanel Astrophysics, Lomonosov MSU PRESS, 591pp.
http : // www.pereplet.ru/lipunov/625.html