GCN Circular 37444
Subject
EP240908a: Mondy and AbAO follow-up observations
Date
2024-09-10T09:16:50Z (23 days ago)
From
Alexei Pozanenko at IKI, Moscow <grb.alex@gmail.com>
Via
legacy email
N. Pankov (HSE, IKI), A. Pozanenko (IKI), E. Klunko (ISTP), R. Ya.
Inasaridze (AbAO), S. Belkin (HSE, IKI) report on behalf of GRB-IKI-FuN:
We observed the field of fast X-Ray transient EP240908a (Mao et al., GCN
37432) with AZT-33IK 1.5-m telescope of Mondy observatory, and AS-32 0.7-m
telescope of Abastumani observatory (AbAO). The observations were started
on 2024-09-08 at 19:05 UT at Mondy (~ 1 day since EP trigger).
The series of images in the R-filter were taken. Preliminary upper limits
are given below:
Date UTStart JD Filter Exp. OT err UL(3sigma) Telescope
(mid, days) (s)
2024-09-09 19:05:56 60562.82703 R 45x120 n/d n/d 23.5 AZT-33IK
2024-09-09 19:37:24 60562.84333 R 74x60 n/d n/d 19.7 AS-32
The magnitudes were calibrated with nearby USNO-B1.0 stars (R2 magnitudes).
We do not resolve the optical source proposed by Quirola-Vasquez et al.
(GCN 37438). In a stacke Mondy image we clearly detect a nearby LS DR10
elliptical source at RA=00:56:00.5 DEC=+08:04:33.2 which is apart of 3.6
arcsec from the proposed OT. This elliptical source might be a host galaxy
of the EP240908a.