Radio Observations of SN 2022aau
ATel #15187; S. D. Ryder (Macquarie University), E. Kundu (Michigan State University), L. Marnoch (Macquarie University), R. Z. E. Alsaberi (Western Sydney University), M. D. Filipovic (Western Sydney University), G. Anderson (ICRAR/Curtin University), C. Stockdale (Marquette University), K. Maeda (Kyoto University), M. Renaud (LUPM, CNRS/IN2P3), R. Kotak (University of Turku)
on 27 Jan 2022; 10:08 UT
Credential Certification: Stuart Ryder (Stuart.Ryder@mq.edu.au)
Subjects: Radio, Supernovae
The young core-collapse supernova SN 2022aau (=DLT22b) in NGC 1672, classified as a type II event (ATel #15176), has been observed with the Australia Telescope Compact Array (ATCA) at 5.5 and 9.0 GHz on 25 Jan 2022 11:00-16:00 UT. No radio emission was detected to 3-sigma upper limits on the flux density of 0.22 mJy and 0.15 mJy at 5.5 GHz and 9.0 GHz, respectively, with the SN location close to the circumnuclear star-forming ring (Diaz et al. 1999, ApJ, 512, 623) making any detection more challenging. Adopting a host galaxy distance of ~15 Mpc from the NASA Extragalactic Database (NED) this implies an upper limit on the 5.5 GHz GHz luminosity within 6 days of explosion of 6.0E+25 erg/sec/Hz. We would like to extend our thanks to the ATCA staff for enabling these observations. The ATCA is part of the Australia Telescope National Facility which is funded by the
Commonwealth of Australia for operation as a National Facility managed by CSIRO. We acknowledge the Gomeroi people as the traditional owners of the Observatory site.
