[vsnet-grb-info 26666] GRB 201024A: FRAM-ORM afterglow detection

[GCN Circulars]

TITLE:   GCN CIRCULAR
NUMBER:  28766
SUBJECT: GRB 201024A: FRAM-ORM afterglow detection
DATE:    20/10/24 08:56:09 GMT
FROM:    Martin Jelinek at Astro.Inst-AVCR,Ondrejov  <martin.jelinek at asu.cas.cz>

Martin Jelinek and Jan Strobl (ASU CAS Ondrejov, CZ),
Sergey Karpov, Martin Masek, Petr Janecek, Jakub Jurysek,
Jan Ebr, Ronan Cunniffe, Petr Travnicek and Michael Prouza
(Institute of Physics, Prague, CZ)

report:

The 25cm robotic telescope FRAM-ORM at La Palma (Spain)
reacted robotically to the alert of GRB201024A (Marshall
et al GCNC 28761), obtaining a series of 20 s unfiltered
images starting at 02:49:34.4 UT, i.e. 35.3s post trigger.

We clearly detect the source reported by other telescopes
(Lipunov et al. GCN 28760, Fernandez-Garcia et al. GCN 28763,
de Ugarte Postigo et al GCN 28764 and others). As reported
before, the brightness of the object reaches a maximum of
about R(Vega) = 14.0 and then decays relatively steeply with a
power law index alpha = ~1.5.