Наблюдаем гамма-всплески

[krypton]

TITLE:   GCN CIRCULAR
NUMBER:  16779
SUBJECT: GRB 140903A:  ISON-Kislovodsk observations
DATE:    14/09/05 04:11:18 GMT
FROM:    Alexei Pozanenko at IKI

A. Pozanenko (IKI), A. Volnova (IKI), N. Polyakov (ISON), E. Romas (ISON), I. Molotov (KIAM), report on  behalf of larger collaboration:

We observed the field of  GRB 140903A (Cummings et al., GCN 16763) with Santel-400AN   telescope of ISON-Kislovodsk observatory starting on Sep. 03 (UT) 18:54:36. In the enhanced XRT position (De Pasquale et al., GCN 16767) we do not detect the object (Capone  et al., GCN 16769; Cenko  et al., GCN 16770;  Fruchter, GCN 16776). A preliminary upper limit after subtraction of the nearby bright star is 16m. A formal upper limit of a point-like source in the image away of the bright nearby star is following

Date       UT start   t-T0    Filter   Exp.   UL(3 sigma)
                     (mid, days)        (s)

2014-09-03 18:22:05  0.14057  None     100    18.6       

The photometry is based on SDSS stars

SDSS J155213.13+273321.7 R_Lupton 15.392 ± 0.013
SDSS J155218.31+273433.5 R_Lupton 14.792 ± 0.013
SDSS J155155,39+273948,9 R_Lupton 15.421 ± 0.013

[krypton]

TITLE:   GCN CIRCULAR
NUMBER:  16780
SUBJECT: GRB 140818B: TShAO optical upper limit
DATE:    14/09/05 06:16:20 GMT
FROM:    Alexei Pozanenko at IKI

A. Pozanenko (IKI), I. Rewa, W. Mundrzyjewski, A. Kusakin (Fesenkov Astrophysical Institute), A. Volnova (IKI),  report on behalf of larger GRB follow-up collaboration:

We observed the field of the Swift GRB 140818B  (Vargas et al., GCN 16709)with Zeiss-1000 (East) telescope of Tien Shan Astronomical Observatory starting on Aug. 19, (UT) 17:05. We took several images in R-filter.  Within enhanced XRT error circle  (Beardmore et al., GCN 16712) we do not detect the afterlow (Aceituno et al., GCN 16711; Knust et al., GCN 16713). The source mentioned by Knust et al. (GCN 16713) is clearly visible in a stacked image in coordinates (J2000) 18:04:32.76 -01:23:08.9 (uncertainty  is 0.2 arcsec in both coordinates)  and has brightness of R=22.1+/-0.1.

Details of a photometry of the stacked image are following

Date       UT start  t-T0,d  Exp,s   Filter Up_Lim (3 sigma)
                     (mid)

2014-08-19 16:11:12  0.9317  20*600  R      22.9


The photometry is based on nearby USNO-B1.0 stars, R2 magnitudes.

[grb123]

GRB 140907A
(J2000)
48.1418d {+03h 12m 34.03s} 
+46.6049d {+46d 36' 17.6"}

яркий, сейча уже 18m

[krypton]

TITLE:   GCN CIRCULAR
NUMBER:  16809
SUBJECT: GRB 140907A: TShAO observations
DATE:    14/09/09 20:54:38 GMT
FROM:    Alexei Pozanenko at IKI, Moscow

A. Volnova (IKI), A. Pozanenko (IKI), W. Mundrzyjewski (Fesenkov
Astrophysical Institute), V. Tereshenko (Fesenkov Astrophysical
Institute)  report on behalf of larger GRB follow-up collaboration:

We observed the field of the Swift GRB 140907A  (Krimm et al., GCN
16788)with Zeiss-1000 (East) telescope of Tien Shan Astronomical
Observatory starting on Sep. 07, (UT) 17:05. We took several images in
R-filter.  Within enhanced XRT error circle  (Goadet al., GCN 16795) we
clearly detect the afterglow(Xu et al., GCN 16789; Kuin and Krimm, GCN
16791).
Preliminary photometry of first and last exposures is following

Date       UT start  t-T0,d  Exp,s   Filter OT    OT_err
                      (mid)

2014-09-07 17:33:41 0.06357  600     R     18.94 0.08
2014-09-07 23:22:46 0.30598  600     R     20.22 0.07

The photometry is based on nearby USNO-B1.0 stars, R2 magnitudes.
Preliminary light curve of the afterglow of GRB 140907A obtained between
(UT) 17:33:41 and  23:22:46   can be found in
http://grb.rssi.ru/GRB140907A/GRB14907A_lc.png .

Within the time interval ( 17:33:41 - 23:22:46  ) the LC might be
approximated by power law with a power law index ~-2 which could suggest
the jet-brake within this interval.

[LeonidOS]

Ссылка на первые оптические наблюдения GRB 130427A, полученные ISON-NM, в статье "Discovery of the broad-lined Type Ic SN 2013cq associated with
the very energetic GRB 130427A", ApJ 776 (2013) 98.

http://arxiv.org/abs/1305.6832v2

[Инна]

A. Pozanenko (IKI), I. Rewa, W. Mundrzyjewski, A. Kusakin (Fesenkov Astrophysical Institute), A. Volnova (IKI),  report on behalf of larger GRB follow-up collaboration:

Ого... Только моя фамилия через V пишется... Reva

[krypton]

TITLE:   GCN CIRCULAR
NUMBER:  16911
SUBJECT: GRB 141015A: ISON-NM early optical observations
DATE:    14/10/15 17:27:15 GMT
FROM:    Alexei Pozanenko at IKI, Moscow

L. Elenin (KIAM),  E. Mazaeva (IKI), A. Volnova (IKI), I. Molotov
(KIAM), A. Pozanenko (IKI) report on behalf of larger GRB  follow-up
collaboration:

We observed the field of the Swift   GRB 141015A (Troja et al., GCN
16909) with 0.4-m telescope of ISON-NM observatory starting on Oct., 15
(UT) 09:16:55, i.e. ~4 minutes after burst triger. We obtained 14
unfiltered images of 120 s exposure. We do not detect any source within
XRT error circle (Troja et al., GCN 16910):

UT start   t-T0         Exp.      Filter  UL (3sigma)
          (mid.,days)    (s)
09:16:55  0.0068        5*120    Clear   18.4
09:16:55  0.0131       14*120    Clear   19.0

The photometry is based on nearby USNO-B1.0 stars

USNO-B1.0      RA             DEC            R2
1083-0107546   087,552978    +18,360067     14,78
1083-0107529   087,547650    +18,355839     15,18
1083-0107484   087,534895    +18,341425     15,00
1083-0107360   087,503081    +18,336089     14,71

[krypton]

TITLE:   GCN CIRCULAR
NUMBER:  16947
SUBJECT: GRB 141020A: Khureltogot optical upper limit
DATE:    14/10/25 00:46:27 GMT
FROM:    Alexei Pozanenko at IKI

E. Mazaeva (IKI), S. Schmalz (AIP), N. Tungalag (Research Center of Astronomy and Geophysics MAS),  A. Volnova (IKI), I.Molotov (KIAM), A. Pozanenko (IKI) report on behalf of larger GRB follow-up collaboration:
 
We observed the field of the Swift GRB 141020A  (Cenko et al., GCN 16928) with ORI-40 telescope of Khureltogot observatory. We obtained several unfiltered images on Oct. 20 starting on (UT) 12:09:56.  At the position reported in (Kuin et al., GCN 16932) we do not detect the afterglow of GRB 141020A  (Cenko et al., GCN 16928; Kuin et al., GCN 16932; Mazaeva et al., GCN 16943). Preliminary photometry is following:

date        UT start  t-T0       Filter  Exp.   OT    UL(3sigma)
                      (mid, days)          (s)

2014-10-20  12:09:56  0.2037     clear   60*60  n/d   19.8

The photometry is based on SDSS stars reported in GCN 16943.

[krypton]

TITLE:   GCN CIRCULAR
NUMBER:  16948
SUBJECT: GRB 141020A: AAO optical upper limit
DATE:    14/10/25 00:48:28 GMT
FROM:    Alexei Pozanenko at IKI

E. Mazaeva (IKI), R. Inasaridze (AAO), A. Volnova (IKI), Molotov (KIAM), A. Pozanenko (IKI) report on behalf of larger GRB follow-up collaboration:
 
We observed the field of the Swift GRB 141020A  (Cenko et al., GCN 16928) with AS-32 (0.7m) telescope of Abastumani Observatory. We obtained several unfiltered images on Oct. 20 starting on (UT) 15:41:01.  At the position reported in (Kuin et al., GCN 16932) we do not detect the afterglow of GRB 141020A  (Cenko et al., GCN 16928; Kuin et al., GCN 16932; Mazaeva et al., GCN 16943). Preliminary photometry is following:

date        UT start  t-T0        Filter  Exp.    OT    UL(3sigma)
                      (mid, days)          (s)

2014-10-20  15:41:01  0.3630      clear   38*120  n/d   21.4

The photometry is based on SDSS stars reported in GCN 16943.

[krypton]

TITLE:   GCN CIRCULAR
NUMBER:  17033
SUBJECT: GRB 141026A: CrAO optical observation
DATE:    14/11/06 18:49:43 GMT
FROM:    Alexei Pozanenko at IKI, Moscow

V. Rumyantsev (CrAO), E. Mazaeva (IKI),  A. Volnova (IKI), A. Pozanenko
(IKI) report on  behalf of larger GRB follow-up collaboration:

The GCN #17032 should be read as following:
(We are sorry for inconvenience)

We observed the field of the Swift GRB GRB 141026A (Hagen et al., GCN
16950) with ZTSh telescope of CrAO observatory starting on Oct. 26 (UT)
18:25:48. We took several images in R-filter of 120 s exposure under
poor weather conditions and mean seeing of 5". The optical afterglow
(Littlejohns et al. GCN 16592; Varela et al. GCN 16953; Gorosabel et al.
GCN 16954) is clearly visible in our stacked image.   Photometry of a
combined image is following

Date       UT start,  t-t0     Filter   Exp.      OT   OT_err
                       (mid, days)        (s)

2014-10-26 18:25:48   0.7020   R        53*120    21.88 0.18

The photometry is based on USNO-B1.0  stars

RA             DEC           R
044,065509    +26,958050     18.71
044,051792    +26,894737     18.59
044,049131    +26,929059     17.48

[krypton]

TITLE:   GCN CIRCULAR
NUMBER:  17030
SUBJECT: GRB 141028A: TShAO optical observation
DATE:    14/11/05 20:23:23 GMT
FROM:    Alexei Pozanenko at IKI, Moscow

E. Mazaeva (IKI),  A. Volnova (IKI), A. Khruslov (INASAN), A. Kusakin
(Fesenkov Astrophysical Institute), A. Pozanenko (IKI) report on behalf
of larger GRB follow-up collaboration:

We observed the field of GRB 141028A (Bissaldi et al., GCN 16969)
with  Zeiss-1000 (East) 1-m telescope of Tien Shan Astronomical
Observatory on Oct., 29  starting on (UT) 15:58:47.  We obtained several
images in R-filter. In a combined image  we clearly  detect optical
afterglow (Gorbovskoy et al., GCN 16972; Graham et al., GCN 16977).
Details of the photometry are following:

date       UT start   t-T0      Filter  Exp.    OT   OT_err
                      (mid, days)        (s)

2014-10-29 15:58:47   1.2300    R       10*300  20.5 0.10


The photometry is based on  following SDSS DR9 stars:

SDSS_id                   R_Lupton
J213021,99-001255,7       15.503
J213030,76-001427,8       17.205
J213035,56-001205,6       16.620

[krypton]

TITLE:   GCN CIRCULAR
NUMBER:  17029
SUBJECT: GRB 141031B: TShAO optical observations
DATE:    14/11/05 19:27:48 GMT
FROM:    Alexei Pozanenko at IKI, Moscow

E. Mazaeva (IKI),  A. Volnova (IKI), A. Khruslov (INASAN), A. Kusakin
(Fesenkov Astrophysical Institute), A. Pozanenko (IKI) report on behalf
of larger GRB follow-up collaboration:

We observed the field of the GRB 141031B (Gompertz et al., GCN 16998)
with  Zeiss-1000 (East) 1m telescope of Tien Shan Astronomical
Observatory on Oct., 31  starting on (UT) 15:39:02.  Within enhanced XRT
error circle (Goad et al., GCN 17009)  we do not detect any object
either in a single image (Mazaeva et al., GCN 17007) or   in combined
image of a total exposure of 4800 s.
Details of the photometry are following:

date       UT start   t-T0       Filter  Exp.   UL (3 sigma)
                      (mid, days)          (s)

2014-10-31 15:39:02   0.03284    R         600  21.5
2014-10-31 15:39:02   0.05837    R       8*600  22.3


The photometry is based on  following SDSS DR9 stars:

SDSS_id             R_Lupton err
J234748,81+411954,3 16.430 0.014
J234749,26+412154,3 16.866 0.014
J234741,02+411920,5 17.452 0.015

[krypton]

TITLE:   GCN CIRCULAR
NUMBER:  17062
SUBJECT: GRB 141109A: AAO optical observations
DATE:    14/11/12 19:34:55 GMT
FROM:    Alexei Pozanenko at IKI, Moscow

E. Mazaeva (IKI), R. Inasaridze (AAO), A. Volnova (IKI), Molotov (KIAM),
A. Pozanenko (IKI) report on behalf of larger GRB follow-up collaboration:

We observed the field of the Swift GRB 141109A  (D'Avanzo et al., GCN
17037) with AS-32 (0.7m) telescope of Abastumani Observatory.
Observations were performed under mean seeing (FWHM) of 2.4". We
obtained several unfiltered images on Nov. 10 starting on (UT) 01:05:04.
  At the position reported in (Covino, GCN 16932) we marginally
detected (S/N =2) the afterglow of GRB 141109A  (Covino, GCN 16932; Xu
et al., GCN 17040; Graham et al., GCN 17041). Preliminary photometry is
following:

date        UT start  t-T0        Filter  Exp.    OT    OT_err
                       (mid, days)         (s)

2014-11-10  01:05:04  0.836       clear   37*120  21.7  0.4

The photometry is based on several SDSS-DR9 stars R magnitudes
transformed from SDSS-DR9 based on Lupton transformations:

SDSS-DR9            R
J093801.18-003731.5 17.6330
J093759.83-003741.8 17.2029
J093815.45-003332.9 18.2004

[krypton]

TITLE:   GCN CIRCULAR
NUMBER:  17067
SUBJECT: GRB 141109B: optical upper limits
DATE:    14/11/13 00:53:15 GMT
FROM:    Alexei Pozanenko at IKI, Moscow

E. Mazaeva (IKI), A. Stepura (UAFO, ISON),  R. Inasaridze (AAO),  B.
Abdulloev (Institute of Astrophysics),   A. Matkin (UAFO, ISON), N.
Minikulov (Institute of Astrophysics), A. Volnova (IKI), Molotov (KIAM), A.
Pozanenko (IKI) report on behalf of  larger GRB follow-up collaboration:

We observed the field of the Swift GRB 141109B  (Melandri  et al., GCN
17038) with following instruments: SANTEL-650 (0.65m) telescope of
UAFO/ISON-Ussuriysk Observatory,  AZT-8 (0.7m) telescope of Gissar
observatory, and AS-32 (0.7m) telescope of Abastumani Observatory  (AAO). In
the enhanced XRT error circle (Beardmore  et al., GCN 17045)  we do not
detect any source with  upper limits listed below:

Date              UT start    t-T0            Filter   Exp.     UL(3sigma)
Observatory
                                       (mid, days)           (s)

2014-11-09 09:18:51  0.10220    clear  100*60  20.7          UAFO
2014-11-09 14:30:43  0.29425    R          40*60  19.9          Gissar
2014-11-09 15:26:30  0.38464    clear    71*120 22.0         AAO


The photometry is based on  stars of USNO-B1.0 and assumed R magnitudes:
RA                 DEC                 R
222.429145 +73.085200    14.97
222.517839 +73.110348    15.54
222.193512 +73.123517    17.06
222.275356 +73.104562    17.46
222.463681 +73.158509    17.55

[krypton]

TITLE:   GCN CIRCULAR
NUMBER:  17089
SUBJECT: GRB 141121A: AAO optical observations
DATE:    14/11/23 13:36:48 GMT
FROM:    Alexei Pozanenko at IKI, Moscow

E. Mazaeva (IKI), R. Inasaridze (AAO), A. Volnova (IKI), Molotov (KIAM),
A. Pozanenko (IKI) report on behalf of larger GRB follow-up collaboration:

We observed the field of GRB 141121A (Lien et al., GCN 17075) with AS-32
(0.7m) telescope of Abastumani Observatory. Observations were performed
under mean seeing (FWHM) of 3.5". We obtained several unfiltered images
on Nov. 21 starting on (UT) 20:01:35.  Within enhanced XRT position
(Evans et al., GCN 17080) we clearly detected  afterglow of GRB 141109A
(Tanga et al., GCN 17078; Perley et al., GCN 17081). Preliminary
photometry is following:

date       UT start  t-T0        Filter  Exp.    OT    OT_err
                      (mid, days)         (s)

2014-11-21 20:01:35  0.73241     clear   54*120  20.08 0.05

The photometry is based on several SDSS-DR9 stars R magnitudes
transformed from SDSS-DR9 based on Lupton transformations:

SDSS_id                 R(Lupton)
J081028,70+221318,9     16,317
J081049,68+221012,2     17,148
J081048,76+220822,7     14,413
J081106,66+221346,9     14,626