Наблюдаем гамма-всплески

[krypton]

TITLE:   GCN CIRCULAR
NUMBER:  13520
SUBJECT: GRB 120724A: optical observation in Maidanak observatory
DATE:    12/07/26 19:48:38 GMT
FROM:    Alexei Pozanenko at IKI, Moscow

A. Pozanenko (IKI), A. Sergeev (Institute of Radio Astronomy of NASU), A.
Volnova (SAI MSU), O. Burhonov (UBAI), I. Molotov (KIAM) report on behalf
GRB follow-up collaboration:

We observed  the field of Swift  GRB 120724A (D'Avanzo et al., GCN 13510)
with AZT-22 telescope of Maidanak observatory starting on Jul. 24 (UT)
15:55:51 under mean seeing (FWHM) of about 1.1 arcsec. Totally we obtained 4
images of 600 s exposure in R  filter. At the edge of the enhanced XRT
position (Goad et al., GCN 13515) we detected the object with coordinates
(J2000) 16 20 43.28  +03 30 27.1 (uncertainty of  0.12 arcsec in both
coordinates), which is slightly apart from coordinates of the OT reported
earlier (Guidorzi  et al., GCN 13511; Holland et al., GCN 13516).  Since the
object is also visible in stacked DSS images (R+I) we suggest it is a
possible host galaxy of GRB 120724A.

A preliminary photometry of the object is based on USNO-B1.0 nearby stars:

T0+        Filter,     Exposure,   OT
(mid, d)                (s)

 0.42252       R    3x600        20.97 +/- 0.09

A finding chart can be found at
http://grb.rssi.ru/GRB120724A/GRB120724A_AZT22&DSS.png

[Игорь]

Про первую попытку краснодарцев:

Разговаривал с Лёшей. Он сказал, что что-то получилось с наблюдением гамма-всплеска. Т.е. на грани фола виден объект аж 21,2 звездной величины (при сложении кадров, как я понимаю). Чудеса. В общем, обещает послать первый циркуляр от имени обсерватории КубГУ. Первый блин получился не комом. Молодцы!!

[krypton]

TITLE:   GCN CIRCULAR
NUMBER:  13523
SUBJECT: GRB 120716A: optical observation in Maidanak observatory
DATE:    12/07/28 14:43:32 GMT
FROM:    Alexei Pozanenko at IKI, Moscow  

A. Pozanenko (IKI), A. Sergeev (Institute of Radio Astronomy NASU), A.
Volnova (SAI MSU), O. Burhonov (UBAI), I. Molotov (KIAM) report on behalf of
larger GRB follow-up collaboration:

We observed the region of the optical afterglow (Cenko et al., GCN 13489)
of IPN localized GRB 120716A (Hurley et al., GCN 13487) with AZT-22
telescope  of Maidanak observatory on Jul. 19 (UT) 17:57:06  and Jul. 21
(UT) 18:46:16 under mean seeing  of about 0.6 arcsec.  Totally we obtained 8
images of 600 s exposure in R  filter. In each particular image we clearly
see the optical afterglow (Cenko et al., GCN 13489; Xu  et al., GCN 13490;
Schady  et al., GCN 13492) in coordinates (J2000) 20:52:12.15 +09:35:54.2
(uncertainty of 0.13 arcsec in both coordinates).

Preliminary photometry of the afterglow is based on USNO-B1.0 nearby stars:

T0+        Filter,     Exposure,   OT
(mid, d)                (s)

date            t_start (UT)    filter   exp,s    OT

2012-07-19  17:57:06      R      4*600  20.71+/-0.04
2012-07-21  18:46:16      R      4*600  21.01+/-0.04

[krypton]

TITLE:   GCN CIRCULAR
NUMBER:  13609
SUBJECT: GRB 120802A: optical observations
DATE:    12/08/07 23:37:03 GMT
FROM:    Alexei Pozanenko at IKI, Moscow  

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

We observed the field of  GRB 120802A (Holland et al., GCN 13555) with
0.45-m telescope ?f ISON-NM observatory  starting on  Aug. 02 (UT) 08:13:18
(Elenin et al., GCN 13556).  We took  several unfiltered images of 30 s  and
60 s exposures starting on Aug. 02, (UT)  08:13:18.  At the edge of the
enhanced by UVOT field astrometry  XRT error circle
(http://www.swift.ac.uk/xrt_positions/529486)  we marginally detect a source
in coordinates 02:59:22.35  +13:46:07.2  (uncertainty of about 0.3 arsces in
both coordinates).   A preliminary  photometry of  co-added frames is based
on the USNO-B1.0 (R2)  nearby  stars is following:

T_start,     T0+,           Exposure, Object,
(UT)           mid, d         (s)

08:13:18    0.06905   6360          21.2+/-0.6

We suggest the source might be an optical afterglow of GRB 120802A, however
at that time we cannot confirm the fading origin of the source.

[LeonidOS]

TITLE: GCN CIRCULAR
NUMBER: 13679
SUBJECT: GRB 120811C: optical observations
DATE: 12/08/18 22:18:42 GMT
FROM: Alexei Pozanenko at IKI, Moscow

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

We observed the field of GRB 120811C (Barlow et al., GCN 13622) with 0.45-m telescope of ISON-NM observatory starting on Aug. 12 (UT) 03:25:07. We took several unfiltered images of 30 s exposures. The optical afterglow (Denisenko et al., GCN 13623) is marginally detected in co-added frames at coordinates (J2000) 13:18:43.98 +62:18:03.4 with uncertainty of 0.5 arcsec in both coordinates. A preliminary photometry of co-added frames is based on the USNO-B1.0 (R2) nearby stars is following:

T_start, T0+, Exposure, OT, UL (3 sigma) (UT) mid, d (s)

03:25:07 0.5095 1800 21.5 +/-0.5 21.2

[LeonidOS]

TITLE:   GCN CIRCULAR
NUMBER:  13693
SUBJECT: GRB 120811C: optical observations
DATE:    12/08/20 15:14:34 GMT
FROM:    Alexei Pozanenko at IKI, Moscow  

E. Litvinenko (UBAI), A. Volnova (SAI MSU), I. Molotov (KIAM), A. Pozanenko
(IKI) report on behalf of  larger GRB  follow-up collaboration:

We observed the field of  GRB 120811C (Barlow et al., GCN  13622) with
0.4-m telescope of ISON-Kitab observatory  starting on  Aug. 11 (UT)
15:53:49.  We took  several unfiltered images of 30 s exposures.  The
optical afterglow  (Denisenko et al., GCN 13623) is clearly detected in
single initial frames.  A photometry of some co-added frames is based  on
the SDSS stars

SDSS id                             RA                 Dec
R
J131912.45+621444.3 13 19 12,453  +62 14 44,35   16.63
J131815,89+621830,6 13 18 15,896  +62 18 30,67   16.64

is following:

T_start,     T0+,           Exposure,  OT,
(UT)           mid, d         (s)

15:53:49    0.01392    4x30          17,90 +/-0.13
15:56:05    0.01569    5x30          17.95 +/-0.13
15:58:55    0.01841  10x30          18.20 +/-0.10
16:04:35    0.02356  15x30          18.45 +/-0.11
16:13:06    0.03145  25x30          18.40 +/-0.07

[krypton]

TITLE: GCN CIRCULAR
NUMBER: 13759
SUBJECT: GRB 120911A: optical upper limit ISON-NM
DATE: 12/09/13 07:13:47 GMT
FROM: Alexei Pozanenko at IKI, Moscow

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

We observed the field of the Swift GRB 120911A (Cannizzo et al., GCN
13744) with 0.45-m telescope of ISON-NM observatory starting on Sep. 11
(UT) 07:10:42, i.e ~130 s after burst trigger. We took several unfiltered
images of 30 s and 60 s exposures. Within enhanced XRT afterglow position
(Beardmore et al., GCN 13748) we do not detect any new object. A
preliminary photometry of single and co-added frames is based on the
USNO-B1.0 (R2) nearby stars is following:

T0+, Exposure, OT, UL (3 sigma)
mid, d (s)

0.0017 30 n/d 18.4
0.0028 5x30 n/d 19.1
0.0175 60x30 n/d 20.2
0.0590 30x120 n/d 20.6




TITLE: GCN CIRCULAR
NUMBER: 13760
SUBJECT: GRB 120911A: optical upper limit CrAO
DATE: 12/09/13 07:18:31 GMT
FROM: Alexei Pozanenko at IKI, Moscow

V. Rumyantsev, N.Pit' (CrAO), A. Pozanenko (IKI) report on behalf of larger
GRB follow-up collaboration:

We observed the field of the Swift GRB 120911A (Cannizzo et al., GCN
13744) with AZT-11 telescope of CrAO observatory starting on Sep. 11 (UT)
21:10:38. We took several images in R-filter of 180 s exposure. Within
enhanced XRT afterglow position (Beardmore et al., GCN 13748) we do not
detect any new object. A preliminary photometry of co-added frame is
based on the USNO-B1.0 (R2) nearby stars is following:

T0+, Filter Exposure, OT, UL (3 sigma)
mid, d (s)

0.6130 R 20x180 n/d 20.9

[LeonidOS]

Код: [Выделить]

TITLE:   GCN CIRCULAR
NUMBER:  13761
SUBJECT: GRB 120907A: optical observations of ISON-Kislovodsk
DATE:    12/09/13 18:53:47 GMT
FROM:    Alexei Pozanenko at IKI, Moscow  <apozanen@iki.rssi.ru>

V. Nevski (ISON-Kislovodsk Observatory), A. Volnova (SAI MSU/IKI), I.
Molotov (KIAM), A. Pozanenko (IKI)  report on behalf of larger
collaboration:

We observed the field of  GRB 120907A (Racusin  et al., GCN 13716) with
Santel-400AN (0.4-m f/3)  telescope Ďf ISON-Kislovodsk observatory  starting
on  Sep. 07 (UT) 00:34:32, i.e. ~10.2 minutes after burst  trigger.  We took
several unfiltered images  of 30 s and 60 s exposures.  In a stacked images
we clearly detect optical afterglow of   GRB 120907A (Racusin  et al., GCN
13716; Gorbovskoy et al., GCN 13718; Kruehler et al., GCN 13719). A
preliminary photometry of  stacked  frames is based  on the USNO-B1.0 (R2)
nearby  stars:

T_start,     T0+,       Exp,     Filter,       OT
(UT)          mid (d)   (s)

00:34:32  0.00899 10x30    none      18.55+/-0.09
00:51:45  0.02120   5x60    none      18.95+/-0.13
00:58:09  0.02980   8x60    none      19.52+/-0.20
01:16:32  0.04339   8x60    none      19.50+/-0.20


[LeonidOS]

23 сентября H15 пронаблюдал гамма-всплеск GRB 120923A. К сожалению в это время я был на пути из Парижа в Москву, завтра буду обрабатывать кадры.

[Игорь]

23 сентября H15 пронаблюдал гамма-всплеск GRB 120923A. К сожалению в это время я был на пути из Парижа в Москву, завтра буду обрабатывать кадры.

  Вот, что значит телескоп-робот - ты отсутствуешь, а он наблюдает. Лепота 

[LeonidOS]

Это да 

[LeonidOS]

TITLE:   GCN CIRCULAR
NUMBER:  13820
SUBJECT: GRB 120923A: optical upper limit
DATE:    12/09/26 20:24:47 GMT
FROM:    Alexei Pozanenko at IKI, Moscow  

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

We observed the field of  the Swift GRB 120923A (Yershov  et al., GCN 13796)
with 0.45-m telescope of ISON-NM observatory  starting on  Sep. 23 (UT)
05:18:58, i.e 172 s after burst trigger.  We took  several unfiltered images
of 30 s and 60 s exposures.  We do not detect the optical counterpart (Levan
et al., GCN 13802). A  photometry of  co-added frames is based  on the
USNO-B1.0 (R2)  nearby  stars is following:

  T0+,          Exposure,  OT,         UL (3 sigma)
  mid, d         (s)

0.00447      9x30           n/d           19.7
0.02839    53x30           n/d           20.5

[LeonidOS]

На H15 отснял поле GRB 121001A. Сейчас буду смотреть.

[LeonidOS]

На H15 отснял поле GRB 121001A. Сейчас буду смотреть.

На сумме источника из GCN13833 не видно. Так что, я тоже подтверждаю что этот объект скорее всего был оптической составляющей всплеска.

[Иванов А]

Небольшая анимашка. По моим оценкам на момент вспышки блеск в районе (уточнение 05 10 2012) 18,5m в R.