{
  "circularId": 34961,
  "subject": "GRB 231104A: FRAM-ORM optical limit",
  "eventId": "GRB 231104A",
  "createdOn": 1699364115431,
  "submittedHow": "email-legacy",
  "bibcode": "2023GCN.34961....1M",
  "body": "Alzbeta Malenakova, Martin Jelinek and Jan Strobl (ASU CAS Ondrejov, CZ),\nSergey Karpov, Martin Masek, Petr Janecek, Jakub Jurysek,\nJan Ebr, Ronan Cunniffe, Petr Travnicek and Michael Prouza\n(Institute of Physics, Prague, CZ)\n\nreport:\n\nThe 25cm robotic telescope FRAM-ORM at La Palma (Spain) reacted robotically\nto the Fermi-GBM/Swift/Fermi-LAT/AstroSat CZTI alert of GRB 231104A (Bala\net al., GCNC 34937, Page et al., GCNC 34938 and Goad et al., GCNC 34940,\nPrincipe. et al. 2023, GCNC 34943, Navaneeth et al., GCNC 34945), obtaining\na series of 20s unfiltered images starting at 01:48:10.3 UT, i.e. 31.3s\npost trigger, covering the third gamma ray episode of the GRB.\n\nWe do not detect any new source in comparison to Atlas Refcat 2.0 (Tonry et\nal., 2018) neither in single images (detection limit r'>17.6) nor in a\ncombined 40x20s frame (mean exp time 960s post trigger, with a limit\nr'>18.6) similarly to Strausbaugh et al. (GCNC 34939), Kuin et al. (GCNC\n34941), Odeh et al. (GCNC 34946), Zhu et al. (GCNC 34951), Gupta et al.\n(GCNC 34955) and Busman et al. (GCNC 34958).\n",
  "submitter": "Martin Jelinek at Astro.Inst-AVCR,Ondrejov <martin.jelinek@asu.cas.cz>"
}