GCN Circular 32852
Subject
GRB 221009A: SARA-RM 1m Optical Afterglow Detection
Event
Date
2022-10-26T03:04:37Z (3 years ago)
From
Kyle Pellegrin at Clemson University <pelleg2@g.clemson.edu>
K. Pellegrin, K. Rumstay, and D. Hartmann report:
We observed the field of GRB 221009A detected by Swift(Kennea & Williams,
GCN 32635; Veres et al., GCN 32636) Swift BAT (Dichiara et al., GCN 32632),
Fermi LAT (Bissaldi, GCN 32637), Liverpool Telescope (Perley, GCN 32638),
Vereniging Voor Sterrenkunde (Broens, GCN 32640), IPN (Svinkin, GCN 32641),
BOOTES-2/TELMA (Hu et al., GCN 32644), Mondy (Belkin, GCN 32645), MeerLICHT
(Wet et al., GCN 32646), Nanshan/NEXT (Xu et al., GCN 32647), ESO X-shooter
(de Ugarte Postigo, GCN 32648), Al Khatim Observatory M44 (Odeh, GCN 32649
& GCN 32666), AGILE/MCAL (Ursi et al, GCN 32650), REM (Brivio et al., GCN
32652), AMI-LA (Bright et al., GCN 32653), SAAO (Durbak et al., GCN 32654),
ATA (Farah et al., GCN 32655), Swift UVOT (Kuin and Dichiara, GCN 32656),
AGILE/GRID (Piano et al., GCN 32657), LOAO (Paek et al., GCN 32659),
INTEGRAL SPI/ACS (Gotz et al., GCN 32660), GIT (Kumar et al., GCN 32662),
Burke-Gaffney Observatory (Romanov, GCN 32664), SLT-40cm (Chen et al., GCN
32667), Lick/Nickel Telescope (Vidal et al., GCN 32669), Assy (Kim et al.,
GCN 32670 & Belkin et al., GCN 32769), Global MASTER-Net (Lipunov et al.
GCN 32672 & GCN 32673), BlackGEM (Groot et al., GCN 32678), iTelescope
(Romanov, GCN 32679), Sintez-Newton/ CrAO (Belkin et al., GCN 32684),
COATLI (Watson et al. GCN 32692), LCOGT (Strausbaugh et al., GCN 32693 &
GCN 32738), COATLI (Butler et al., GCN 32705), Konkoly Observatory (Vinko
et al., GCN 32709), GMG (Mao et al., GCN 32727), Sayan Observatory
(Zaznobin et al., GCN 32729), MITSuME Okayama (Sasada et al., GCN 32730),
Lowell Discovery Telescope (O���Connor et al., GCN 32739 & GCN 32799),
RTT-150 (Bikmaev et al., GCN 32743 & GCN 32752), Gemini-South (Rastinejab
and Fong, GCN 32749), Gemini-South (O���Connor et al., GCN 32750), OHP
(Schneider et al., GCN 32753), REM (D���Avanzo et al., GCN 32755), Pan-STARRS
(Huber et al., GCN 32758), Large Binocular Telescope (Shrestha et al., GCN
32759), Faulkes Telescope North (Shrestha et al., GCN 32771), GRANDMA
(Rajabov et al., GCN 32795), BOAO (Im et al., GCN 32803), TNG (Ferro et
al., GCN 32804), LBT (Rossi et al., GCN 32809), DFOT (Gupta et al., GCN
32811), AZT-20 (Belkin et al., GCN 32818), and James Webb (Levan et al.,
GCN 32821) using the SARA 1m optical telescope located at the Roque de los
Muchachos Observatory on La Palma, Canary Islands, Spain, equipped with the
Andor Ikon-L camera.
Observations started at 20:50:13 UTC on 2022-10-23 and ended at 22:29:27
UTC on 2022-10-23. We obtained a series of 90 images with an exposure time
of 60s each in the Johnson-Cousins R filter. The afterglow is faintly seen
after stacking all 90 images together. Photometry on the stacked image
found the afterglow to be R=22.19 +/= 0.07 mag at 14.90190 days (midpoint
of stacked observations) after the Swift trigger (GCN 32632).
Photometry based on the PanSTARRS catalog.
The Southeastern Association for Research in Astronomy (SARA) consortium
operates three telescopes: the 0.9-m SARA-KP at Kitt Peak in Arizona,
the 0.6-m SARA-CT at Cerro Tololo in Chile, and the 1.0-m SARA-RM (formerly
the JKT) telescope at Roque de los Muchachos Observatory in the Canary
Islands. For more information see: Keel et al. (2016):
https://iopscience.iop.org/article/10.1088/1538-3873/129/971/015002