Наблюдаем гамма-всплески

[krypton]

TITLE:   GCN CIRCULAR
NUMBER:  18160
SUBJECT: GRB 150817A: AAO optical observations
DATE:    15/08/18 19:09:15 GMT
FROM:    Alexei Pozanenko at IKI, Moscow

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

We observed the field of the Swift GRB 150817A (D’Elia et al., GCN
18143) with AS-32 (0.7m) telescope of Abastumani Observatory starting on
Aug. 17 (UT) 17:00:31.  Within the enhanced XRT error circle (Osborne et
al., GCN 18146) we do not detect the optical afterglow (Butler et al.,
GCN 18145; Cenko et al., GCN 18153). In particular the  magnitude of the
first object (Butler et al., GCN 18144) is 21.6 +/- 0.2.  Upper limit of
the object is following

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

2015-08-17 17:00:31    0.64432  None    24*120   22.4

The photometry is based on nearby USNO-B1.0 stars
USNO-B.1_id  R2
0779-0405699 16.12
0779-0405721 16.40
0779-0405742 16.47
0779-0405723 16.94
0779-0405664 17.60

[krypton]

TITLE:   GCN CIRCULAR
NUMBER:  18193
SUBJECT: GRB 150819A: Mondy and TSHAO optical upper limits
DATE:    15/08/21 23:11:50 GMT
FROM:    Alexei Pozanenko at IKI, Moscow

E. Mazaeva (IKI),  E. Klunko (ISTP), I. Reva (Fesenkov Astrophysical
Institute), A. Kusakin (Fesenkov Astrophysical Institute), A. Volnova
(IKI), I. Korobtsev (ISTP),  A. Pozanenko (IKI) report on behalf of
larger GRB follow-up collaboration:

We observed the field of the Swift GRB 150819A (Ukwatta  et al., GCN
18163) with AZT-33IK telescope of Sayan observatory (Mondy) and
Zeiss-1000 (West) 1-m telescope of Tien Shan Astronomical Observatory.
We obtained several images in R-filter in each telescope. We do not
detect any source within enhanced XRT error circle (Evans et al., GCN
18167).
Upper limits of the field are  following

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

2015-08-19 19:06:09   0.78197  R        30*120  22.7         AZT-33IK
2015-08-19 21:57:51   0.89889  R        10*300  19.4         Zeiss-1000

Photometry is based on USNO-B1.0 stars:
USNO-B.1_id    R2
0997-0042082 17.56
0997-0042080 18.70

[krypton]

TITLE:   GCN CIRCULAR
NUMBER:  18244
SUBJECT: GRB 150818A: TSHAO and SAO RAS optical observations
DATE:    15/09/07 09:29:09 GMT
FROM:    Alexei Pozanenko at IKI, Moscow

E. Mazaeva (IKI), A. Moskvitin (SAO RAS), I. Reva (Fesenkov
Astrophysical Institute),  A. Kusakin (Fesenkov Astrophysical
Institute),  A. Volnova (IKI), A. Pozanenko  (IKI) report on behalf of
larger GRB follow-up collaboration:

We are continuing observations the field of Swift GRB 150818A (D'Elia et
al., GCNC 18152) with Zeiss-1000  1-m telescope of Tien Shan
Astronomical Observatory and Zeiss-1000, 1-m telescope of SAO RAS. The
optical transient (Marshall et al. GCN 18155; McCauley et al. GCN 18161;
Mazaeva et al. GCN 18175; Sanchez-Ramirez et al. GCN 18177; Mazaeva et
al. GCN 18182, GCN 18189, GCN 18205; Schulze et al. GCN 18179) is
clearly visible on combined images in each epochs. The updated light
curve of Supernova (de Ugarte Postigo et al. GCN 18213; Mazaeva et al.
GCN 18205) + host galaxy (Sanchez-Ramirez et al., GCN 18177; de Ugarte
Postigo et al. GCN 18213) can be found in

http://grb.rssi.ru/GRB150818A/GRB150818A_R_lc.png

The evident maximum of SN brightness (in Rc-filter) was on ~ Sep. 1-2,
and the brightness of SN+host galaxy was R ~ 21.1 +/- 0.1 on Sep. 6 (UT)
18:00. We are grateful to V.P. Goranskiy for assistance in SAO RAS
observations.

[Сергей Шмальц]

TITLE:   GCN CIRCULAR
NUMBER:  18307
SUBJECT: GRB 150911A:   Khureltogot upper limit
DATE:    15/09/14 07:20:31 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 GRB 150911A (Starling et al., GCN 18280) with ORI-40 telescope of Khureltogot observatory starting on Sep., 11 (UT) 19:03:00, i.e. ~23 minutes after the burst trigger. We do not detect any object within enhanced XRT error circle (Goad et al., GCN 18283). Photometry of the field is following


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

2015-09-11 19:03:00 0.0351 none   45*60 20.9

Photometry is base on nearby USNO-B.1 stars
USNO-B.1_id R2
0957-0043966 15.54
0957-0043954 16.24
0957-0043961 16.45

[krypton]

TITLE:   GCN CIRCULAR
NUMBER:  18281
SUBJECT: GRB 150910A: TSHAO optical observations
DATE:    15/09/11 19:27:21 GMT
FROM:    Alexei Pozanenko at IKI, Moscow

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

We observed the field of GRB 150910A (Pagani et al., GCN  18264)  with
Zeiss-1000 (East) 1-m telescope of Tien Shan Astronomical Observatory on
Sep. 10 (UT) 18:02:59 -- 20:37:38.  We obtained several images in R and
B filters.  In both filters the afterglow  (Pagani et al., GCN 18264;
Zheng & Filippenko, GCN 18265) is clearly visible. Within 2.5 hours of
observations we do not detect significant fading of the afterglow. The
photometry of combined images are following

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

2015-09-10 18:08:20    0.42807  R       11*300   20.18 +/- 0.05
2015-09-10 18:02:59    0.42436  B       12*300   20.85 +/- 0.08

The photometry is based on nearby SDSS stars

SDSS_id            R(Lupton)
J002232.47+332751.3    16.29
J002236.24+332854.2    15.92
J002241.61+332836.1    16.23
J002248.33+332723.4    16.76
J002231.90+333004.8    16.93
J002225.39+332809.6    16.12
J002246.76+332716.9    17.63

Our photometry in R-filter is in agreement with  in subsequent
observations (Moskvitin & Goranskij, GCN 18275).

[krypton]

TITLE:   GCN CIRCULAR
NUMBER:  18287
SUBJECT: GRB 150910A: Chuguev observatory optical observations
DATE:    15/09/12 02:51:11 GMT
FROM:    Alexei Pozanenko at IKI, Moscow

Yu. Krugly (IA KhNU),  E. Mazaeva (IKI), V. Shevchenko  (IA KhNU),  T.
Gromakina (IA KhNU), I. Molotov (KIAM), A. Pozanenko  (IKI) report on
behalf of larger GRB follow-up collaboration:

We observed the field of GRB 150910A (Pagani et al., GCN  18264)  with
0.7m  telescope of Institute of Astronomy, Kharkiv National University
starting on Sep. 10 (UT) 21:41:15. We obtained several images in R B
filter.   The afterglow  (Pagani et al., GCN 18264; Zheng & Filippenko,
GCN 18265) is clearly visible in a combined image. The photometry of the
combined image is following

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

2015-09-10 21:41:15    0.52235  R       11*180   20.25 +/-0.14

The photometry is based on SDSS stars used in GCN 18281 (Mazaeva et al.)

[krypton]

TITLE:   GCN CIRCULAR
NUMBER:  18289
SUBJECT: GRB 150910A: AAO optical observations
DATE:    15/09/12 03:14:23 GMT
FROM:    Alexei Pozanenko at IKI, Moscow

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

We observed the field of GRB 150910A (Pagani et al., GCN  18264)  with
  with AS-32 (0.7m) telescope of Abastumani Observatory starting on Sep.
10 (UT) 18:53:54. We obtained several unfiltered images. The afterglow
(Pagani et al., GCN 18264; Zheng & Filippenko, GCN 18265) is clearly
visible in a combined image. The photometry of the combined image is
following

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

2015-09-10 18:53:54    0.45834  none    50*120   20.16 +/- 0.06

The photometry is based on SDSS stars used in GCN 18281 (Mazaeva et al.)

[krypton]

TITLE:   GCN CIRCULAR
NUMBER:  18309
SUBJECT: GRB 150911A: Chuguev observatory upper limit
DATE:    15/09/14 08:47:21 GMT
FROM:    Alexei Pozanenko at IKI

Yu. Krugly (IA KhNU), V. Shevchenko (IA KhNU), T. Gromakina (IA KhNU), I. Molotov (KIAM), E. Mazaeva (IKI), A. Pozanenko (IKI) report on behalf of larger GRB follow-up collaboration:

We observed the field of GRB 150911A (Starling et al., GCN 18280) with 0.7m telescope of Institute of Astronomy, Kharkiv National University starting on Sep. 12 (UT) 01:07:23. We do not detect any object within enhanced XRT error circle (Goad et al., GCN 18283). Photometry of the field is following


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

2015-09-12 01:07:23 0.2804 R      11*180 20.8

Photometry is based on nearby USNO-B.1 stars
USNO-B.1_id R2
0957-0043966 15.54
0957-0043954 16.24
0957-0043961 16.45

[krypton]

TITLE:   GCN CIRCULAR
NUMBER:  18319
SUBJECT: GRB 150910A: TSHAO optical observations
DATE:    15/09/16 11:35:17 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 150910A (Pagani et al., GCN  18264)  with
Zeiss-1000 (East) 1-m telescope of Tien Shan Astronomical Observatory on
Sep. 11 and Sep. 12.  We obtained several images in R filter.  The
afterglow  (Pagani et al., GCN 18264; Zheng & Filippenko, GCN 18265) is
clearly visible in a combined image on Sep. 11 and on Sep. 12 we
obtained upper limit.  The photometry of the combined images are following

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

2015-09-11 18:39:41    1.38753  R       16*300   21.87    0.10
2015-09-12 19:03:44    2.39553  R       21*300   >22.3   (3 sigma)

The photometry is based on SDSS stars used in GCN 18281 (Mazaeva et al.)

[krypton]

TITLE:   GCN CIRCULAR
NUMBER:  18327
SUBJECT: GRB 150910A: AAO optical observations
DATE:    15/09/17 07:27:12 GMT
FROM:    Alexei Pozanenko at IKI, Moscow

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

We observed the field of GRB 150910A (Pagani et al., GCN  18264)  with
AS-32 (0.7m) telescope of Abastumani Observatory starting on Sep. 11
(UT) 20:32:45. We obtained several unfiltered images. The afterglow
(Pagani et al., GCN 18264; Zheng & Filippenko, GCN 18265) is clearly
visible in a combined image. The photometry of the combined image is
following

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

2015-09-11 20:32:45    1.46327  none    49*120   21.55 +/- 0.08

The photometry is based on SDSS stars used in GCN 18281 (Mazaeva et
al.), R magnitude deduced from Lupton's transformations.

[Игорь]

Всем привет!

В НМ снова запущена система автоматического наблюдения GRB, в Австралии запущу как только откроют нужные порты.

Лёня

[LeonidOS]

TITLE:   GCN CIRCULAR
NUMBER:  18480
SUBJECT: GRB 151027A : ISON-NM early optical detection
DATE:    15/10/27 05:47:05 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 151027A (Maselli et al., GCN 18478)
with 0.4-m telescope of ISON-NM observatory in robotic mode starting on
Oct., 27 (UT) 03:59:43  i.e. 79 seconds after burst trigger. We obtained 50
unfiltered images of 30 s exposure. We clearly detect the optical
counterpart of GRB 151027A  (Maselli et al., GCN 18478; Zheng and
Filippenko, GCN 18479) in coordinates (J2000) 18 09 56.69 +61 21 13.2. In
the first image we estimated brightness of the optical counterpart as ~14m.

[krypton]

Интересно, чей снимок всё-таки был первым, ISON-NM или KAIT?

[LeonidOS]

KAIT не написал в циркуляре время начала наблюдений, просто сказав что "сразу после получения алерта". У нас очень плохие кадры, все через облака. Но на первых кадрах источник хорошо виден.

[krypton]

TITLE:   GCN CIRCULAR
NUMBER:  18556
SUBJECT: GRB 150910A: CrAO optical observations
DATE:    15/11/03 19:13:53 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:

We observed the field of the Swift GRB 150910A (Pagani et al., GCN
18264) with ZTSh telescope of CrAO observatory on Sep. 11 and Sep. 12.
We took several images in R,B-filters of 120 s exposure under good
weather conditions on Sep. 11 and non-optimal weather conditions (mean
seeing of 4") on Sep. 12.

The photometry of the afterglow (Pagani et al., GCN 18264; Zheng &
Filippenko, GCN 18265) is following

Date       UT start,  t-t0     Filter   Exp.    OT    OT_err UL(3sigma)
                       (mid, days)        (s)

2015-09-11 17:56:37   1.3762   R        10*120  21.69 0.12   22.9
2015-09-11 18:18:31   1.4022   B        20*120  22.48 0.15   23.5
2015-09-11 18:39:47   1.4244   R        10*120  21.82 0.10   23.2
2015-09-11 19:22:17   1.4436   B        16*120  22.09 0.10   23.5
2015-09-12 18:04:32   2.3801   R        10*120  n/d   n/a    22.3

The photometry is based on SDSS stars used in GCN 18281 (Mazaeva et al.)