V. Lipunov, E. Gorbovskoy, F.Balakin, V.Kornilov,
N.Tyurina, P.Balanutsa, A.Kuznetsov, V.Vladimirov, D. Vlasenko,
I.Gorbunov, D.Zimnukhov, V.Senik, T.Pogrosheva, D.Kuvshinov,
A.Chasovnikov, V.Topolev, A.Posdnyakov
(Lomonosov Moscow State University, SAI, Physics Department),
V. Yurkov, A. Gabovich, Yu. Sergienko
(Blagoveschensk Educational State University)
A. Tlatov, D. Dormidontov
(Kislovodsk Solar Station of the Pulkovo Observatory),
R. Podesta, C.Lopez, F. Podesta, C.Francile
(Observatorio Astronomico Felix Aguilar OAFA),
(Instituto de Ciencias Astronomicas, de la Tierra y del Espacio ICATE),
R. Rebolo, M. Serra
(The Instituto de Astrofisica de Canarias),
(South African Astronomical Observatory),
O.A. Gres, N.M. Budnev, O.Ershova
(Irkutsk State University, API),
MASTER-Amur robotic telescope (Global MASTER-Net:
http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy,
vol. 2010, 30L) located in Russia (Blagoveshchensk State Pedagogical
University) was pointed to the GRB190829A (Fermi GCN 25551 ) 55 sec
after Swift trigger time (Dichiara et al., GCN 25552) at 2019-08-29 19:57:39 UT. The
5-sigma image limit has been about 14.5 mag
MASTER-Kislovodsk robotic telescope was pointed to the GRB190829A by
FERMI GBM coordinates 15 s after trigger time at 2019-08-29 19:56:59 in
The Swift BAT position was 2 degree below horison at this time on
MASTER-Kislovodsk in two polarizations. The first image at Swift BAT
position was obtained 909 s after trigger at 2019-08-29 20:11:53, but due to extrimelly high zenith
distance (89.5 degree) this images has no stars. The first images with
stars was obtained 1239 s after trigger at 2019-08-29 20:17:23 (zenith
The both FERMI-GBM and Swift BAT position was below horisont at
MASTER-SAAO, MASTER-Tavrida and MASTER-OAFA sites. Thus, automatic
pointing was not possible.
MASTER-SAAO robotic telescope located in South Africa (South African
Astronomical Observatory) was pointed to the GRB190829A errorbox 6757 sec
after trigger time at 2019-08-29 21:49:21 UT, with upper limit up to 21.3
mag. The observations began at zenit distance = 76 deg. The sun altitude
is -64.5 deg.
MASTER-Tavrida robotic telescope located in Russia (Lomonosov MSU, SAI
Crimea astronomical station) was pointed to the GRB190829.83 errorbox
6766 sec after trigger time at 2019-08-29 21:49:30 UT, with upper limit up
to 18.5 mag. The observations began at zenit distance = 79 deg. The sun
altitude is -36.7 deg.
MASTER-OAFA robotic telescope located in Argentina (OAFA observatory of
San Juan National University) joined to the GRB190829A observations
27862 sec after trigger time at 2019-08-30 03:41:06 UT, with upper limit
up to 19.8 mag. The observations began at zenit distance = 77 deg. The
sun altitude is -64.8 deg.
Observation with the MASTER-OAFA telescope continues.
Swift team noted the presence of a galaxy SDSS J025810.28-085719.2
(PGC997094) with z=0.07914 centered at a distance of 10 arcseconds from
the XRT location.
The aftergrlow was detected indipendingly by ( Xu et al. GCNC 25555,
Lipunov et al. GCNC 25558).
We see object with 3.1E 7.5S arcsec ofsset from the galaxy center.
Optical afterglow spectrum displays a red
continuum (Valeev et al., 25565) consistent with the
NOT results (Heintz et al. GCNC 25563) at redshift z = 0.0785 +/- 0.005
which coincided with PGC Galaxy.
Very late brightening (up to 1 hour after trigger) in our data, says
about the unusual nature of this phenomenon. By the way, after
the maximum of the brightness of the brightness decreases linearly with
Obviously, this fact indicates the affinity of the galaxy and the
If a very probable connection between the gamma-ray burst and the nearby
galaxy PGC997094 at a distance of ~ 320 Megaparsec and the lack of
an LVC alert can make an important conclusion (VML):
as expected, the collapse of the progenitor core proceeds through the slow
(on the scale of the radial fall time) compression of the quasicylindrical
object - the spinar (Lipunov & Gorbovskoy, 2007, ApJ, vol. 665,
97; Lipunov & Gorbovskoy, MNRAS, 2008, vol. 383, 1397;
Lipunova et al., MNARS, 2009, vol. 397; 1695 .
The one of the automatic detection images is available at
You can see the tools of the MASTER robot in Kislovodsk. From left to
right: the image corresponds to the specified time, the next frame of the
DSS, the next is difference between the new and the reference frame,
frame from SDSS.
Below are two frames of today's observation. Then a logarithm frame.
Finaly, old reference frame.
Ruduction is continue.
This message can be cited.