03 December 2008
MASTER Official Science Release N3
MASTER
VWF4 Kislovodsk GRB081130B prompt optical observations
We do not detect any new source inside error box (A.J. van der Horst,
GCN Circ 8593) brighter than 12.0m before and
after trigger time.
The optical fluence during the 15s-GRBurst is limited by
Fopt < 1.5 x 10-9
erg/cm2
excluding possible absorbtion.
The GRB error-box video from southern camera MASTER VWF4 since
30 seconds
before to 30 seconds after FERMI trigger time.
The circle is the Fermi GBM error box ( A.J. van der Horst, GCN CIRCULAR
8593)
GRB081130B (GCN
8585 | GCN 8597) -
--------------------------------------------------------------------
TITLE: GCN CIRCULAR
NUMBER: 8597
SUBJECT: GRB 081130B: MASTER prompt optical observations
DATE: 08/12/03 17:13:15 GMT
FROM: Vladimir Lipunov at Moscow State U/Krylov Obs
E. Gorbovskoy, V. Lipunov, V.Kornilov, A.Belinski, N.Shatskiy, N.Tyurina,
D.Kuvshinov, P.Balanutsa
Sternberg Astronomical Institute, Moscow State University
A. Tlatov, A.V. Parhomenko
Kislovodsk Solar Station of the Pulkovo Observatory
V.Krushinski, I.Zalognikh
Ural State University, Kourovka
S.Yazev, K.Ivanov
Irkutsk State University
One of the four MASTER Very Wide Field Cameras located at Kislovodsk
(http://apollo.sai.msu.ru/, D=50 mm, 4x1000 square degrees, 35'' per pix)
has observed Fermi error box (A.J. van der Horst, GCN Circ 8593) with
5s exposures during all night without time gap between images (Gorbovskoy
et al., GCN 8585).
These unfiltered images are calibrated relative to Tycho stars (V).
The magnitude limit of the each emage is ~11m.
Now we present results final result.
We do not detect any new source inside error box (A.J. van der Horst,
GCN Circ 8593) brighter than 12.0 mag before and
after trigger time.
The optical fluence during the 15s-GRBurst is limited by
<= 1.5 x 10_-9 erg/cm_2
excluding possible absorbtion.
The fluence (50-300 keV) in this time
interval is (1.3 +/- 0.1)E-6 erg/cm^2 (A.J. van der
Horst, GCN Circ 8593).
So:
Optical Fluence/Gamma-Fluence(50-300 keV) ~ < 1/1000
The ratio for GRB080319B is
Optical Fluence/Gamma-Fluence(15-150 keV) ~ 1/25
(Naked Eye GRB, Racusin, Karpov et al., Nature, vol.455, 183, 2008).
The video and other info are available at
http://observ.pereplet.ru/images/GRB081130B/grb_film.html
Note: the GRB was at the edge of the FOW.
The message may be cited.
mailto: lipunov@sai.msu.ru
-----------------------------------------------------------------------
TITLE: GCN CIRCULAR
NUMBER: 8585
SUBJECT: GRB 081130: MASTER VWF prompt optical observations Fermi GRB
DATE: 08/12/01 10:49:09 GMT
FROM: Vladimir Lipunov at Moscow State U/Krylov Obs
E. Gorbovskoy, V. Lipunov, V.Kornilov, A.Belinski, N.Shatskiy, N.Tyurina,
D.Kuvshinov, A.Kuznetcov
Sternberg Astronomical Institute, Moscow State University
A. Tlatov, A.Parkhomenko
Kislovodsk Solar Station of the Pulkovo Observatory
V.Krushinski, I.Zalognikh
Ural State University, Kourovka
S.Yazev, K.Ivanov
Irkutsk State University
One of the four MASTER Very Wide Field Cameras located at Kislovodsk
(http://apollo.sai.msu.ru/, D=50 mm, 4x1000 square degrees, 35'' per pix)
has
observed the 70% Fermi large error box (Trig Nuber 249750316) with 5s
exposures during all night without time gap between images.
These unfiltered images are calibrated relative to Tycho stars (V).
The magnitued limit of the each emage is ~11m.
Note: the GRB was at the edge of the camera FOW.
The message may be cited.
mailto: lipunov@sai.msu.ru