Наблюдаем гамма-всплески

[krypton]

TITLE:   GCN CIRCULAR
NUMBER:  17103
SUBJECT: GRB 141121A: TSHAO optical observations
DATE:    14/11/27 00:21:38 GMT
FROM:    Alexei Pozanenko at IKI, Moscow

A. Volnova (IKI), I. Reva (Fesenkov Astrophysical Institute), A. Kusakin
(Fesenkov Astrophysical Institute), E. Mazaeva (IKI), 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  Zeiss-1000 (East) 1-m telescope of Tien Shan Astronomical
Observatory  starting on Nov. 22 (UT) 21:45:26.  We obtained several
images in R-filter. In a combined image we clearly  detect optical
afterglow (Tanga et al., GCN 17078; Perley et al., GCN 17081).

A preliminary photometry is based on nearby SDSS DR9 stars:

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

2014-11-22 21:45:26   1.8093    R       26*300  20.88  0.03

[Сергей Шмальц]

TITLE:   GCN CIRCULAR
NUMBER:  17113
SUBJECT: GRB 141121A: Khureltogot optical observations
DATE:    14/11/28 22:40:39 GMT
FROM:    Alexei Pozanenko at IKI, Moscow

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 We observed the field of GRB 141121A (Lien et
al., GCN 17075) with ORI-40 telescope of Khureltogot observatory. We
obtained several images in R-filter on Nov. 21 starting on (UT)
17:07:01.  In a combined image we marginally detect optical afterglow
(Tanga et al., GCN 17078; Perley et al., GCN 17081). Preliminary
photometry is following and based on nearby SDSS DR9 stars:

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


2014-11-21  17:07:01  0.5977     R      120*60  19.0  0.3

[krypton]

TITLE:   GCN CIRCULAR
NUMBER:  17117
SUBJECT: GRB 141121A: TSHAO optical observations
DATE:    14/11/29 18:03:22 GMT
FROM:    Alexei Pozanenko at IKI, Moscow

E. Mazaeva (IKI), A. Kusakin (Fesenkov Astrophysical Institute), A.
Volnova (IKI), I. Reva (Fesenkov Astrophysical Institute),  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  Zeiss-1000 (East) 1-m telescope of Tien Shan Astronomical
Observatory  starting on Nov. 26 (UT) 22:12:24.  We obtained several
images in R-filter. In a combined image we clearly  detect optical
afterglow (Tanga et al., GCN 17078; Perley et al., GCN 17081).

A preliminary photometry is based on nearby SDSS DR9 stars:

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

2014-11-26 22:12:24   5.8118    R       14*300  21.48 0.09

[krypton]

TITLE:   GCN CIRCULAR
NUMBER:  17168
SUBJECT: GRB 141212A: Khureltogot optical upper limit
DATE:    14/12/12 20:09:31 GMT
FROM:    Alexei Pozanenko at IKI, Moscow

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 GRB 141212A (Ukwatta et al., GCN 17158) with
ORI-40 telescope of Khureltogot observatory. We obtained 2 hours of
unfiltered images on Dec. 12 starting on (UT) 12:46:14.  In a combined
image of the first 5 frames we  do not detect any optical source within
  enhanced Swift-XRT position (Osborne et al., GCN 17164). Preliminary
photometry is following

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


2014-12-12  12:46:14  0.02422    R       5*60   18.5


The photometry is based on USNO-B1.0 stars
USNO-B1_id      RA          DEC         R2
1081-0038366 039.120895 +18.127567 16.32
1081-0038391 039.149945 +18.154739 17.15
1081-0038340 039.085725 +18.167617 14.41

[Сергей Шмальц]

TITLE:   GCN CIRCULAR
NUMBER:  17305
SUBJECT: GRB 150110B: Khureltogot optical upper limit
DATE:    15/01/17 19:51:52 GMT
FROM:    Alexei Pozanenko at IKI, Moscow  <apozanen@iki.rssi.ru>

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 GRB GRB 150110B (Evans et al., GCN 17291) with
ORI-40 telescope of Khureltogot observatory. We obtained several
unfiltered images on Jan. 10 starting on (UT) 22:31:36.  In a combined
image of the first 40 frames we  do not detect any optical source within
  enhanced Swift-XRT position (Beardmore et al., GCN 17294). A
photometry of the combined image is following

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

2015-01-10  22:31:36  0.03113    none    40*60  19.3


The photometry is based on USNO-B1.0 stars

USNO-B1_id       RA             DEC        R2
1224-0426323     289.294781   +32.470745   13.52
1225-0423392     289.295778   +32.569009   13.80

[LeonidOS]

На автомате снял GRB 150120A. Начало съемки через 57 сек после алерта. Перекачиваю кадры.

[LeonidOS]

TITLE:   GCN CIRCULAR
NUMBER:  17341
SUBJECT: GRB 150120A: ISON-NM early optical limit
DATE:    15/01/21 18:22:16 GMT
FROM:    Alexei Pozanenko at IKI, Moscow  <apozanen@iki.rssi.ru>

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 150120A (D'Elia et al.,
GCN 17310) with 0.4-m telescope of ISON-NM observatory in robotic mode
starting on Jan., 20 (UT) 02:58:58, i.e. 72 seconds after burst trigger.
We obtained 60 unfiltered images of 30 s exposure. We do not detect any
source within enhanced XRT error circle (Evans et al., GCN 17317):

Date      UT start   t-T0         Exp.    Filter  UL (3sigma)
                      (mid.,days)    (s)
2015-01-20 02:58:58  0.00227      5*30    Clear   19.0
2015-01-20 02:58:58  0.01950     60*30    Clear   20.2


The photometry is based on nearby SDSS DR9 stars

SDSS9_id                R_Lupton
J004136.43+340051.9     15.61
J004135.94+335950.0     14.56
J004101.23+335851.1     15.84

[Сергей Шмальц]

TITLE:   GCN CIRCULAR
NUMBER:  17366
SUBJECT: GRB 150120B: Khureltogot optical observations
DATE:    15/01/30 21:25:11 GMT
FROM:    Alexei Pozanenko at IKI, Moscow

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 GRB 150120B  (D'Elia et al., GCN 17314) with
ORI-40 telescope of Khureltogot observatory on Jan., 20  starting on
(UT) 10:52:51. We obtained 90 unfiltered images of 60 s exposure.
Within  enhanced Swift-XRT error circle (Goad et al., GCN 17320)  we
clearly detect optical  afterglow (Perley et al. GCN 17315, Guidorzi et
al. GCN 17316) in a combined image. Photometry of the afterglow is
following

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

2015-01-20  10:52:51  0.18068    none    90*60  20.75 0.20

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

USNO-B1_id   R2
0981-0032639 16.04
0981-0032644 17.10

[LeonidOS]

Отснял GRB 150203A, 46 секунд после алерта, 71 секунда после события. Качаю.

[LeonidOS]

TITLE:   GCN CIRCULAR
NUMBER:  17399
SUBJECT: GRB 150203A: ISON-NM early optical limit
DATE:    15/02/04 11:46:45 GMT
FROM:    Alexei Pozanenko at IKI, Moscow  <apozanen@iki.rssi.ru>

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

We observed the field of the Swift GRB 150203A (Ukwatta et al., GCN 17377)
with 0.4-m telescope of ISON-NM observatory in robotic mode starting on
Feb., 03 (UT) 04:10:19  i.e. 72 seconds after burst trigger. We obtained 60
unfiltered images of 30 s exposure. We do not detect any source within
enhanced XRT error circle (Evans et al., GCN 17384):

Date          UT start   t-T0             Exp.    Filter   UL (3sigma)
                               (mid.,days)    (s)
2014-02-03 04:10:19  0.00130       2*30    Clear   18.0
2014-02-03 04:10:19  0.01836     60*30    Clear   19.7

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

USNO-B1.0    RA              Dec             R2
0968-0105340 06:33:22.23 +06:53:43.2 15.41
0969-0108800 06:33:26.73 +06:56:58.4 14.77
0969-0108730 06:33:22.76 +06:55:10.3 15.73

[Сергей Шмальц]

TITLE:   GCN CIRCULAR
NUMBER:  17459
SUBJECT: GRB 150212A: Khureltogot optical upper limit
DATE:    15/02/12 20:37:01 GMT
FROM:    Alexei Pozanenko at IKI, Moscow

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 150212A (Page et al., GCN 17449) with ORI-40
telescope of Khureltogot observatory on Feb., 12 starting on (UT)
11:32:28. We obtained 24 unfiltered images of 15 s exposure. We did not
detect any optical counterpart in XRT error circle (Evans et al. GCN
17452). Details of the photometry are following:

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

2015-02-12  11:32:28  0.02739 none  24*15  15.8

The star mentioned by Cenko et al. (GCNs 17451, 17454) is visible in our
combined image and have a brightness of 15.85 +/- 0.25.

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

USNO-B1_id    R2
1374-0373548  15.39
1374-0373502  14.41

[krypton]

TITLE:   GCN CIRCULAR
NUMBER:  17468
SUBJECT: GRB 150213B: AAO optical observations
DATE:    15/02/14 07:06:15 GMT
FROM:    Alexei Pozanenko at IKI, Moscow
A. Pozanenko (IKI), R. Inasaridze (AAO), E. Mazaeva (IKI), A. Volnova (IKI),
Molotov (KIAM), report on behalf of larger GRB follow-up collaboration:
We observed the field of the Swift GRB 150213B (Pagani et al., GCN 17464)
with AS-32 (0.7m) telescope of Abastumani Observatory.   We obtained several
unfiltered images starting on Feb. 13 (UT) 23:24:58 and ending Feb. 14 (UT)
01:06:30. In the first single images of 120 s exposure we clearly detect
the optical afterglow (Pagani et al., GCN 17464; Kann et al., GCN 17465;
Malesani et al., GCN 17467).   Preliminary photometry of the afterglow is
19.7m (at  54 minutes after burst trigger) in comparison with nearby
USNO-B1.0 stars (R2 mags).
Data receiving and reduction is ongoing.

[krypton]

TITLE: GCN CIRCULAR
NUMBER: 17478
SUBJECT: GRB 150213B: AAO photometry
DATE: 15/02/19 16:49:54 GMT
FROM: Alexei Pozanenko at IKI, Moscow

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

We report photometry of our observation (GCN 17468) of the field of the
Swift GRB 150213B (Pagani et al., GCN 17464) with AS-32 (0.7m) telescope
of Abastumani Observatory. The optical afterglow (Pagani et al., GCN
17464; Kann et al., GCN 17465; Malesani et al., GCN 17467) is visible on
single images. The photometry of the afterglow is following

Date UT start t-T0 Filter Exp. OT Err.
(mid, days) (s)
2015-02-13 23:22:23 0.03696 none 2*120 18.98 0.14
2015-02-13 23:27:43 0.04345 none 5*120 19.15 0.10
2015-02-13 23:41:05 0.05273 none 5*120 19.56 0.13
2015-02-13 23:54:27 0.06201 none 5*120 19.12 0.13
2015-02-13 24:07:49 0.07593 none 10*120 19.12 0.06
2015-02-13 24:34:32 0.09634 none 12*120 19.20 0.08

The photometry might be affected by the presence of the nearby bright
star (e.g., Kann et al., GCN 17465). The photometry is based on nearby
SDSS DR9 stars:

SDSS9_id R(Lupton)
J165343,83+341043,0 16,49
J165348,15+341040,4 15,99
J165354,27+341137,8 17,87
J165339,38+341103,1 17,14
J165341,19+341135,8 14,53

[krypton]

TITLE:   GCN CIRCULAR
NUMBER:  17570
SUBJECT: GRB 150309A: AAO optic upper limit
DATE:    15/03/12 18:16:20 GMT
FROM:    Alexei Pozanenko at IKI, Moscow
E. Mazaeva (IKI), R. Inasaridze (AAO), Sh. Makandarashvili (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 150309A (Cummings et al., GCN
17553)  with AS-32 (0.7m) telescope of Abastumani Observatory starting
on Mar. 10 (UT) 01:40:54.  Within the enhanced XRT position (Osborne et
al., GCN 17555) we do not detect any object. An upper limit is following
Date       UT start   t-T0    Filter   Exp.     UL(3 sigma)
                      (mid, days)        (s)
2015-03-10 01:40:54  0.12699  None     19*120   21.2
The photometry is based on USNO-B1.0 star
USNO-B1.0_id  R2
1764-0030460  15.42

[krypton]

TITLE:   GCN CIRCULAR
NUMBER:  17647
SUBJECT: GRB 150323A: AAO optical observations
DATE:    15/03/26 18:41:23 GMT
FROM:    Alexei Pozanenko at IKI, Moscow
E. Mazaeva (IKI), R. Inasaridze (AAO), Sh. Makandarashvili (AAO),   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 150323A (Amaral-Rogers et al., GCN
17611)  with AS-32 (0.7m) telescope of Abastumani Observatory starting on
Mar. 23 (UT) 22:47:06.  Within the enhanced XRT position (Goad et al., GCN
17615) we do not detect any object. An upper limit is following
Date          UT start     t-T0        Filter    Exp.      UL(3 sigma)
                          (mid, days)                (s)
2015-03-23 22:47:06    0.85076  None    15*180   21.2
The photometry is based on nearby USNO-B1.0 stars.