TITLE:   GCN CIRCULAR
NUMBER:  32529
SUBJECT: GRB 220831A: ATCA 5/9 GHz radio observations
DATE:    22/09/08 02:40:23 GMT
FROM:    Gemma Anderson at Curtin U  <gemma.anderson@curtin.edu.au>

G. E. Anderson (Curtin), M. E. Bell (UNewcastle), P. J. Hancock (Curtin),
J. C. A. Miller-Jones (Curtin), M. D. Aksulu (UvA), A. Bahramian (Curtin),
A. J. van der Horst (GWU), S. D. Ryder (Macquarie), A. Rowlinson (UvA, ASTRON),
R. A. M. J. Wijers (UvA)

We used the Australia Telescope Compact Array (ATCA) to perform a radio
observation of the short GRB 220831A at 5.5 and 9 GHz. The scheduled observations
began on 2022 Sept 14 UT for 5 hours (4 days post-burst; Fermi GBM Team
GCN 32511, which had been localised by Swift/BAT-GUANO; A. Tohuvavohu et al.,
GCN 32506). No radio source was detected at the candidate Swift-XRT, VLT/HAWK-I
and DECam afterglow position (S. Dichiara et al., GCN 32510; P. D’Avanzo et al.,
GCN 32513; A. Moller et al., GCN 32516), with 3 sigma upper-limits of 39 microJy
and 36 microJy at 5.5 and 9 GHz, respectively.

We thank the ATCA and CSIRO Astronomy and Space Science (CASS) staff for
scheduling these observations.


Gemma Anderson
Senior Research Fellow | Curtin Institute of Radio Astronomy (CIRA)
International Centre for Radio Astronomy Research (ICRAR)
My work days are Monday, Wednesday, Thursday and Friday

Curtin University
Tel | +61 8 9266 3785
Email | gemma.anderson@curtin.edu.au<mailto:gemma.anderson@curtin.edu.au>
Pronouns | She/Her

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