October 2023 - vsnet-grb-info - ooruri.kusastro.kyoto-u.ac.jp

[vsnet-grb-info 32780] GRB 231030B: GRBAlpha detection
by GCN Circulars 31 Oct '23

31 Oct '23

TITLE: GCN CIRCULAR NUMBER: 34923 SUBJECT: GRB 231030B: GRBAlpha detection DATE: 23/10/31 19:40:44 GMT FROM: Marianna Dafčíková at Masaryk University <500025(a)mail.muni.cz> M. Dafcikova, J. Ripa (Masaryk U.), A. Pal (Konkoly Observatory), N. Werner (Masaryk U.), M. Ohno, H. Takahashi (Hiroshima U.), L. Meszaros, B. Csak (Konkoly Observatory), N. Husarikova, F. Munz , M. Topinka, M. Kolar, J.-P. Breuer, F. Hroch (Masaryk U.), T. Urbanec, M. Kasal, A. Povalac (Brno U. of … [View More]Technology), J. Hudec, J. Kapus, M. Frajt (Spacemanic s.r.o), R. Laszlo, M. Koleda (Needronix s.r.o), M. Smelko, P. Hanak, P. Lipovsky (Technical U. of Kosice), G. Galgoczi (Wigner Research Center/Eotvos U.), Y. Uchida, H. Poon, H. Matake (Hiroshima U.), N. Uchida (ISAS/JAXA), T. Bozoki (Eotvos U.), G. Dalya (Eotvos U.), yyT. Enoto (Kyoto U.), Zs. Frei (Eotvos U.), G. Friss (Eotvos U.), Y. Fukazawa, K. Hirose (Hiroshima U.), S. Hisadomi (Nagoya U.), Y. Ichinohe (Rikkyo U.), K. Kapas (Eotvos U.), L. L. Kiss (Konkoly Observatory), T. Mizuno (Hiroshima U.), K. Nakazawa (Nagoya U.), H. Odaka (Univ of Tokyo), J. Takatsy (Eotvos U.), K. Torigoe (Hiroshima U.), N. Kogiso, M. Yoneyama (Osaka Metropolitan U.), M. Moritaki (U. Tokyo), T. Kano (U. Michigan) -- the GRBAlpha collaboration. The long-duration GRB 231030B (Fermi/GBM detection: GCN 34915; AstroSat/CZT detection: GCN 34919; INTEGRAL/SPI-ACS peak detection at 2023-10-30 ~19:58:20 UT) was observed by the GRBAlpha 1U CubeSat (Pal et al. 2023, A&A, 677, 40; arXiv:2302.10048). The detection was confirmed at the peak time 2023-10-30 19:58:21 UTC. The T90 duration measured by GRBAlpha is 21 s and the overall significance during T90 reaches 15 sigma. The light curve obtained by GRBAlpha is available here: https://grbalpha.konkoly.hu/static/share/GRB231030B_GCN.pdf All GRBAlpha detections are listed at: https://monoceros.physics.muni.cz/hea/GRBAlpha/ GRBAlpha, launched on 2021 March 22, is a demonstration mission for a future CubeSat constellation (Werner et al. Proc. SPIE 2018). The detector of GRBAlpha consists of a 75 x 75 x 5 mm3 CsI scintillator read out by a SiPM array, covering the energy range from ~50 keV to ~1000 keV. To increase the duty cycle and the downlink rate, the upgrade of the on-board data acquisition software stack is in progress. The ground segment is also supported by the radio amateur community and it takes advantage of the SatNOGS network for increased data downlink volume. View this GCN Circular online at https://gcn.nasa.gov/circulars/34923. --- To unsubscribe, open this link in a web browser: https://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6InZzbmV0L… [View Less]

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[vsnet-grb-info 32779] GRB 231028B: VZLUSAT-2 detection
by GCN Circulars 31 Oct '23

31 Oct '23

TITLE: GCN CIRCULAR NUMBER: 34922 SUBJECT: GRB 231028B: VZLUSAT-2 detection DATE: 23/10/31 19:20:48 GMT FROM: Marianna Dafčíková at Masaryk University <500025(a)mail.muni.cz> M. Dafcikova, J. Ripa (Masaryk U.), A. Pal (Konkoly Observatory), N. Werner (Masaryk U.), M. Ohno (Hiroshima U.), L. Meszaros, B. Csak (Konkoly Observatory), H. Takahashi (Hiroshima U.), F. Munz , M. Topinka, F. Hroch, N. Husarikova, J.-P. Breuer (Masaryk U.), J. Hudec, J. Kapus, M. Frajt, M. Rezenov (… [View More]

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[vsnet-grb-info 32778] Fermi trigger No 720415645: Global MASTER-Net observations report
by GCN Circulars 31 Oct '23

31 Oct '23

TITLE: GCN CIRCULAR NUMBER: 34921 SUBJECT: Fermi trigger No 720415645: Global MASTER-Net observations report DATE: 23/10/31 18:15:51 GMT FROM: Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov(a)xray.sai.msu.ru> V. Lipunov, V.Kornilov, E. Gorbovskoy, K. Zhirkov, N.Tyurina, P.Balanutsa, A.Kuznetsov, V.Senik, D. Vlasenko, G.Antipov, D.Zimnukhov, E.Minkina, A.Chasovnikov, V.Topolev, D.Kuvshinov, D. Cheryasov, Ya.Kechin, Yu.Tselik, A. Sosnovskij (Lomonosov Moscow State … [View More]University, SAI, Physics Department), R. Podesta, C.Lopez, F. Podesta, C.Francile (Observatorio Astronomico Felix Aguilar OAFA), R. Rebolo, M. Serra (The Instituto de Astrofisica de Canarias), D. Buckley (South African Astronomical Observatory), O.A. Gress, N.M. Budnev, O.Ershova (Irkutsk State University, API), L.Carrasco, J.R.Valdes, V.Chavushyan, V.M.Patino Alvarez, J.Martinez, A.R.Corella, L.H.Rodriguez (INAOE, Guillermo Haro Astrophysics Observatory), A. Tlatov, D. Dormidontov (Kislovodsk Solar Station of the Pulkovo Observatory), V. Yurkov, A. Gabovich (Blagoveschensk Educational State University) MASTER-SAAO robotic telescope (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L) located in South Africa (South African Astronomical Observatory) started inspect of the Fermi GRB231031.14 (trigger No 720415645,10h 20m 52.80s , -77d 30m 36.0s, R=8.59) errorbox 51708 sec after notice time and 51745 sec after trigger time at 2023-10-31 17:49:46 UT, with upper limit up to 15.1 mag. Observations started at twilight. The observations began at zenith distance = 69 deg. The sun altitude is -10.2 deg. The galactic latitude b = -17 deg., longitude l = 295 deg. Real time updated cover map and OT discovered available here: https://master.sai.msu.ru/site/master2/observ.php?id=2293539 We obtain a following upper limits. Tmid-T0 | Date Time | Site | Coord (J2000) |Filt.| Expt. | Limit| Comment _________|_____________________|_____________________|____________________________________|_____|_______|_______|________ 51776 | 2023-10-31 17:49:46 | MASTER-SAAO | (09h 52m 09.44s , -78d 30m 02.3s) | C | 60 | 14.6 | 51866 | 2023-10-31 17:51:16 | MASTER-SAAO | (10h 31m 40.28s , -78d 29m 40.8s) | C | 60 | 13.9 | 52037 | 2023-10-31 17:54:07 | MASTER-SAAO | (10h 08m 57.73s , -76d 36m 12.9s) | C | 60 | 14.6 | 52128 | 2023-10-31 17:55:38 | MASTER-SAAO | (10h 39m 45.58s , -76d 34m 21.4s) | C | 60 | 13.6 | 52208 | 2023-10-31 17:56:58 | MASTER-SAAO | (11h 09m 45.42s , -76d 32m 15.4s) | C | 60 | 14.7 | 52378 | 2023-10-31 17:59:48 | MASTER-SAAO | (10h 45m 55.31s , -74d 40m 47.5s) | C | 60 | 14.4 | 52475 | 2023-10-31 18:01:25 | MASTER-SAAO | (09h 47m 01.87s , -78d 29m 16.3s) | C | 60 | 15.1 | Filter C is a clear (unfiltred) band. The observation and reduction will continue. The message may be cited. View this GCN Circular online at https://gcn.nasa.gov/circulars/34921. --- To unsubscribe, open this link in a web browser: https://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6InZzbmV0L… [View Less]

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[vsnet-grb-info 32777] GRB 231030B: Fermi GBM Detection
by GCN Circulars 31 Oct '23

31 Oct '23

TITLE: GCN CIRCULAR NUMBER: 34920 SUBJECT: GRB 231030B: Fermi GBM Detection DATE: 23/10/31 14:33:19 GMT FROM: sumanbala2210(a)gmail.com S. Bala (USRA) and C. Meegan (UAH) report on behalf of the Fermi Gamma-ray Burst Monitor Team: "At 19:58:19.94 UT on 30 October 2023, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 231030B (trigger 720388704/231030832). The Fermi GBM Final Real-time Localization is reported in GCN 34915. The GBM light curve consists of a single … [View More]

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[vsnet-grb-info 32776] GRB 231030B: AstroSat CZTI detection
by GCN Circulars 31 Oct '23

31 Oct '23

TITLE: GCN CIRCULAR NUMBER: 34919 SUBJECT: GRB 231030B: AstroSat CZTI detection DATE: 23/10/31 14:01:12 GMT FROM: Gaurav Waratkar at IIT Bombay <gauravwaratkar(a)iitb.ac.in> P. K. Navaneeth (IUCAA), G. Waratkar (IITB), A. Vibhute (IUCAA), V. Bhalerao (IITB), D. Bhattacharya (Ashoka University/IUCAA), A. R. Rao (IUCAA/TIFR), and S. Vadawale (PRL) report on behalf of the AstroSat CZTI collaboration: Analysis of AstroSat CZTI data with the CIFT framework (Sharma et al., 2021, JApA,… [View More]

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[vsnet-grb-info 32775] Fermi GRB 231030B: Global MASTER-Net observations report
by GCN Circulars 30 Oct '23

30 Oct '23

TITLE: GCN CIRCULAR NUMBER: 34918 SUBJECT: Fermi GRB 231030B: Global MASTER-Net observations report DATE: 23/10/30 20:46:00 GMT FROM: Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov(a)xray.sai.msu.ru> V. Lipunov, V.Kornilov, E. Gorbovskoy, K. Zhirkov, N.Tyurina, P.Balanutsa, A.Kuznetsov, V.Senik, D. Vlasenko, G.Antipov, D.Zimnukhov, E.Minkina, A.Chasovnikov, V.Topolev, D.Kuvshinov, D. Cheryasov, Ya.Kechin, Yu.Tselik, A. Sosnovskij (Lomonosov Moscow State University, SAI, … [View More]Physics Department), R. Podesta, C.Lopez, F. Podesta, C.Francile (Observatorio Astronomico Felix Aguilar OAFA), R. Rebolo, M. Serra (The Instituto de Astrofisica de Canarias), D. Buckley (South African Astronomical Observatory), O.A. Gress, N.M. Budnev, O.Ershova (Irkutsk State University, API), L.Carrasco, J.R.Valdes, V.Chavushyan, V.M.Patino Alvarez, J.Martinez, A.R.Corella, L.H.Rodriguez (INAOE, Guillermo Haro Astrophysics Observatory), A. Tlatov, D. Dormidontov (Kislovodsk Solar Station of the Pulkovo Observatory), V. Yurkov, A. Gabovich (Blagoveschensk Educational State University) MASTER-Tunka robotic telescope (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L) located in Russia (Applied Physics Institute, Irkutsk State University) started inspect of the Fermi GRB 231030B ( Fermi GBM team, GCN 34915) errorbox 118 sec after trigger time at 2023-10-30 20:00:18 UT, with upper limit up to 15.5 mag. The observations began at zenith distance = 70 deg. The sun altitude is -36.7 deg. MASTER-Tavrida robotic telescope located in Russia (Lomonosov MSU, SAI Crimea astronomical station) started inspect of the Fermi GRB 231030B errorbox 53 sec after notice time and 175 sec after trigger time at 2023-10-30 20:01:15 UT, with upper limit up to 18.2 mag. The observations began at zenith distance = 71 deg. The sun altitude is -54.7 deg. MASTER-Kislovodsk robotic telescope located in Russia (Lomonosov MSU, Kislovodsk Solar Station of Pulkovo observatory) started inspect of the Fermi GRB 231030B errorbox 446 sec after notice time and 567 sec after trigger time at 2023-10-30 20:07:47 UT, with upper limit up to 15.8 mag. The observations began at zenith distance = 74 deg. The sun altitude is -59.1 deg. The galactic latitude b = 43 deg., longitude l = 86 deg. Real time updated cover map and OT discovered available here: https://master.sai.msu.ru/site/master2/observ.php?id=2293463 We obtain a following upper limits. Tmid-T0 | Date Time | Site | Coord (J2000) |Filt.| Expt. | Limit| Comment _________|_____________________|_____________________|____________________________________|_____|_______|_______|________ 121 | 2023-10-30 20:00:18 | MASTER-Tunka | (16h 13m 30.71s , +58d 06m 31.2s) | C | 5 | 14.4 | 155 | 2023-10-30 20:00:49 | MASTER-Tunka | (16h 13m 43.99s , +53d 32m 52.4s) | C | 10 | 15.1 | 195 | 2023-10-30 20:01:15 | MASTER-Tavrida | (16h 20m 18.41s , +56d 18m 19.3s) | C | 40 | 17.5 | 194 | 2023-10-30 20:01:18 | MASTER-Tunka | (16h 13m 44.06s , +53d 32m 52.5s) | C | 30 | 15.5 | 243 | 2023-10-30 20:02:02 | MASTER-Tavrida | (16h 20m 24.49s , +56d 17m 16.7s) | C | 40 | 17.5 | 238 | 2023-10-30 20:02:08 | MASTER-Tunka | (16h 13m 44.28s , +53d 32m 52.5s) | C | 20 | 15.5 | 278 | 2023-10-30 20:02:47 | MASTER-Tunka | (16h 13m 44.42s , +53d 32m 52.6s) | C | 20 | 15.3 | 296 | 2023-10-30 20:02:51 | MASTER-Tavrida | (16h 20m 19.47s , +56d 16m 14.4s) | C | 50 | 18.0 | 315 | 2023-10-30 20:03:26 | MASTER-Tunka | (16h 13m 44.60s , +53d 32m 52.8s) | C | 15 | 15.1 | 363 | 2023-10-30 20:03:48 | MASTER-Tavrida | (16h 20m 25.51s , +56d 16m 32.7s) | C | 70 | 18.0 | 349 | 2023-10-30 20:04:01 | MASTER-Tunka | (16h 13m 44.71s , +53d 32m 52.6s) | C | 15 | 15.2 | 383 | 2023-10-30 20:04:35 | MASTER-Tunka | (16h 13m 44.83s , +53d 32m 52.9s) | C | 15 | 15.2 | 446 | 2023-10-30 20:05:05 | MASTER-Tavrida | (16h 20m 22.32s , +56d 17m 57.1s) | C | 80 | 17.9 | 423 | 2023-10-30 20:05:09 | MASTER-Tunka | (16h 13m 45.01s , +53d 32m 54.2s) | C | 25 | 15.3 | 464 | 2023-10-30 20:05:53 | MASTER-Tunka | (16h 13m 45.18s , +53d 32m 55.1s) | C | 20 | 15.4 | 503 | 2023-10-30 20:06:32 | MASTER-Tunka | (16h 13m 45.35s , +53d 32m 55.4s) | C | 20 | 15.3 | 543 | 2023-10-30 20:06:32 | MASTER-Tavrida | (16h 20m 22.35s , +56d 16m 18.7s) | C | 100 | 17.9 | 540 | 2023-10-30 20:07:11 | MASTER-Tunka | (16h 13m 45.45s , +53d 32m 55.2s) | C | 15 | 15.2 | 623 | 2023-10-30 20:07:47 | MASTER-Kislovodsk | (16h 16m 11.19s , +56d 43m 03.7s) | P| | 110 | 14.3 | 660 | 2023-10-30 20:08:20 | MASTER-Tavrida | (16h 20m 25.77s , +56d 18m 01.2s) | C | 120 | 18.0 | 616 | 2023-10-30 20:08:25 | MASTER-Tunka | (16h 13m 45.71s , +53d 32m 56.8s) | C | 20 | 15.3 | 768 | 2023-10-30 20:09:57 | MASTER-Kislovodsk | (16h 16m 15.48s , +56d 44m 31.6s) | P| | 140 | 14.3 | 802 | 2023-10-30 20:10:27 | MASTER-Tavrida | (16h 20m 19.55s , +56d 17m 03.2s) | C | 150 | 18.0 | 943 | 2023-10-30 20:12:38 | MASTER-Kislovodsk | (16h 16m 08.40s , +56d 43m 33.6s) | P| | 170 | 15.8 | 974 | 2023-10-30 20:13:04 | MASTER-Tavrida | (16h 20m 21.18s , +56d 18m 01.6s) | C | 180 | 18.0 | 1162 | 2023-10-30 20:16:11 | MASTER-Tavrida | (16h 20m 27.23s , +56d 17m 00.1s) | C | 180 | 18.1 | 1349 | 2023-10-30 20:19:19 | MASTER-Tavrida | (16h 20m 21.81s , +56d 15m 59.2s) | C | 180 | 18.1 | 1538 | 2023-10-30 20:22:28 | MASTER-Tavrida | (16h 20m 27.02s , +56d 16m 26.7s) | C | 180 | 18.1 | 1727 | 2023-10-30 20:25:36 | MASTER-Tavrida | (16h 20m 25.49s , +56d 17m 39.9s) | C | 180 | 18.2 | 1750 | 2023-10-30 20:25:59 | MASTER-Kislovodsk | (16h 16m 17.38s , +56d 42m 28.2s) | P| | 180 | 12.1 | Filter C is a clear (unfiltred) band. The observation and reduction will continue. The message may be cited. View this GCN Circular online at https://gcn.nasa.gov/circulars/34918. --- To unsubscribe, open this link in a web browser: https://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6InZzbmV0L… [View Less]

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[vsnet-grb-info 32774] IPN triangulation of GRB 231020A
by GCN Circulars 30 Oct '23

30 Oct '23

TITLE: GCN CIRCULAR NUMBER: 34917 SUBJECT: IPN triangulation of GRB 231020A DATE: 23/10/30 20:36:49 GMT FROM: Dmitry Svinkin at Ioffe Institute <svinkin(a)mail.ioffe.ru> A.S. Kozyrev, D.V. Golovin, M.L. Litvak, I.G. Mitrofanov, and A.B. Sanin on behalf of the MGNS/BepiColombo and HEND/Mars Odyssey teams, J. Benkhoff on behalf of the BepiColombo team, D. Svinkin, D. Frederiks, A. Ridnaia, A. Lysenko, and T. Cline on behalf of the Konus-Wind team, A. Goldstein, M. S. Briggs, C. … [View More]Wilson-Hodge, and E. Burns on behalf of the Fermi GBM team, E. Bozzo and C. Ferrigno, on behalf of the INTEGRAL SPI-ACS GRB team, S. Barthelmy, J. Cummings, H. Krimm, D. Palmer, and A. Tohuvavohu on behalf of the Swift-BAT team, and W. Boynton, C. Fellows, K. Harshman, H. Enos, R. Starr, and A.S. Gardner on on behalf of the GRS-Odyssey GRB team, report: The long-duration GRB 231020A (Fermi-GBM detection: The Fermi GBM team, GCN Circ. 34856; Bala et al., GCN Circ. 34869; BALROG localization: Preis et al., GCN Circ. 34861; AstroSat-CZTI detection: Navaneeth et al., GCN Circ. 34880; GRID detection: Wang and Yang, GCN Circ. 34903) was detected by Fermi (GBM trigger 719521023), INTEGRAL (SPI-ACS), Konus-Wind, Swift (BAT), Mars-Odyssey (HEND), BepiColombo (MGNS), AstroSat (CZTI), and GRID, at about 68218 s UT (18:56:58). The burst was outside the coded field of view of the BAT. We have triangulated it to a preliminary, 3 sigma error box whose coordinates are: --------------------------------------------- RA(2000), deg Dec(2000), deg --------------------------------------------- Center: 314.493 (20h 57m 58s) -29.254 (-29d 15' 15") Corners: 314.061 (20h 56m 15s) -28.067 (-28d 04' 02") 314.696 (20h 58m 47s) -29.893 (-29d 53' 33") 314.881 (20h 59m 31s) -30.286 (-30d 17' 09") 314.275 (20h 57m 06s) -28.562 (-28d 33' 43") --------------------------------------------- The error box area is 247 sq. arcmin, and its maximum dimension is 2.3 deg (the minimum one is 2.2 arcmin). The Sun distance was 101 deg. This localization may be improved. The IPN localization is consistent with, but reduces the area of, the Fermi-GBM final localization. A triangulation map and HEALPix FITS file are posted at http://www.ioffe.ru/LEA/GRBs/GRB231020_T68224/IPN The Konus-Wind time history and spectrum will be given in a forthcoming GCN Circular. View this GCN Circular online at https://gcn.nasa.gov/circulars/34917. --- To unsubscribe, open this link in a web browser: https://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6InZzbmV0L… [View Less]

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[vsnet-grb-info 32773] GRB 231030B: BALROG localization (Fermi Trigger 720388704 / GRB 231030832)
by GCN Circulars 30 Oct '23

30 Oct '23

TITLE: GCN CIRCULAR NUMBER: 34916 SUBJECT: GRB 231030B: BALROG localization (Fermi Trigger 720388704 / GRB 231030832) DATE: 23/10/30 20:28:59 GMT FROM: Jochen Greiner at MPE <jcgrog(a)mpe.mpg.de> T. Preis, B. Biltzinger, J. Burgess & J. Greiner (all MPE Garching) report: The public trigdat data of the Fermi Gamma-ray Burst Monitor (GBM) trigger 720388704 at 19:58:19 on 30 Oct. 2023 were automatically fitted for spectrum and sky location with BALROG (Burgess et al. 2018, … [View More]

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[vsnet-grb-info 32772] GRB 231030B: Fermi GBM Final Real-time Localization
by GCN Circulars 30 Oct '23

30 Oct '23

TITLE: GCN CIRCULAR NUMBER: 34915 SUBJECT: GRB 231030B: Fermi GBM Final Real-time Localization DATE: 23/10/30 20:08:47 GMT FROM: Fermi GBM Team at MSFC/Fermi-GBM <do_not_reply(a)GIOC.nsstc.nasa.gov> The Fermi GBM team reports the detection of a likely LONG GRB At 19:58:19 UT on 30 Oct 2023, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 231030B (trigger 720388704.937126 / 231030832). The on-ground calculated location, using the Fermi GBM trigger data, is RA =… [View More]

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[vsnet-grb-info 32771] GRB 231028A: Swift-BAT refined analysis
by GCN Circulars 30 Oct '23

30 Oct '23

TITLE: GCN CIRCULAR NUMBER: 34914 SUBJECT: GRB 231028A: Swift-BAT refined analysis DATE: 23/10/30 17:03:43 GMT FROM: Tyler Parsotan at NASA GSFC <tyler.parsotan(a)nasa.gov> H. A. Krimm (NSF), S. D. Barthelmy (GSFC), S. Laha (GSFC/UMBC), A. Y. Lien (U Tampa), C. B. Markwardt (GSFC), D. M. Palmer (LANL), T. Parsotan (GSFC/UMBC), T. Sakamoto (AGU), M. Stamatikos (OSU) (i.e. the Swift-BAT team): Using the data set from T-240 to T+962 sec from the recent telemetry downlink, we … [View More]

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