{
  "subject": "GRB 220719A: Detection by VZLUSAT-2",
  "eventId": "GRB 220719A",
  "bibcode": "2022GCN.32463....1R",
  "createdOn": 1660368851000,
  "circularId": 32463,
  "submitter": "Masanori Ohno at Hiroshima U  <ohno@astro.hiroshima-u.ac.jp>",
  "email": "ohno@astro.hiroshima-u.ac.jp",
  "body": "J. Ripa (Masaryk U.), A. Pal (Konkoly Observatory), M. Ohno (Hiroshima U.),\n N. Werner  (Masaryk U.),  L. Meszaros (Konkoly Observatory), H. Takahashi\n(Hiroshima U.), B. Csak (Konkoly Observatory), M. Topinka, F. Munz, F.\nHroch, M. Dafcikova, J.-P. Breuer, N. Husarikova (Masaryk U.), J. Hudec, J.\nKapus, M. Frajt, M. Rezenov (Spacemanic s.r.o), R. Laszlo (Needronix), G.\nGalgoczi (Wigner Research Center/Eotvos U.), N. Uchida (ISAS/JAXA), T.\nEnoto (Kyoto U.), Zs. Frei (Eotvos U.), Y. Fukazawa, K. Hirose, H. Matake\n(Hiroshima U.), S. Hisadomi (Nagoya U.), Y. Ichinohe (Rikkyo U.), L. L.\nKiss (Konkoly Observatory),  T. Mizuno (Hiroshima U.), K. Nakazawa (Nagoya\nU.), H. Odaka (Univ of Tokyo), K. Torigoe (Hiroshima U.), P. Svoboda, V.\nDaniel, J. Dudas, M. Junas, J. Gromes (VZLU), I. Vertat (FEL ZCU)  -- the\nVZLUSAT-2/GRB payload collaboration.\n\nA long-duration GRB 220719A (triggered by KONUS-Wind at 2022/07/19\n19:09:46.939 UT; also detected by INTEGRAL/SPI-ACS with peak at 2022/07/19\n19:09:45.0 UT - private communication with Dmitry Svinkin) was detected by\na GRB detector on board of the VZLUSAT-2 3U CubeSat (\nhttps://www.vzlusat2.cz/en/).\n\nThe data acquisition was performed by the GRB detector unit no. 1. The 6.2\nsigma detection was confirmed at the peak time 2022-07-19 19:09:43.5 UTC.\nThe GRB has the T90 duration of 7 s.\n\nThe light curve obtained by VZLUSAT-2 is available here:\nhttps://vzlusat2.konkoly.hu/static/share/GRB220719A_GCN_VZLUSAT2.pdf\n\nGRB detectors on VZLUSAT-2 are a demonstration payload for a future\nCubeSats constellation (Werner et al. Proc. SPIE 2018). Two GRB modules of\nVZLUSAT-2 are placed in a perpendicular manner and each consists of a 75 x\n75 x 5 mm3 CsI scintillator read out by a SiPM array, covering the energy\nrange from ~30 keV to ~1000 keV. VZLUSAT-2 was launched on 2022 January 13\nfrom Cape Canaveral.\n\nWe acknowledge the help of Dmitry Svinkin (Ioffe Institute) and Anastasia\nTsvetkova (Ioffe Institute) with the confirmation that this event was a\nlong GRB and also detected by INTEGRAL/SPI-ACS."
}