Radio observations of 5 nearby southern supernovae
ATel #12820; Stuart Ryder (Macquarie University), Esha Kundu (Curtin University), Lachlan Marnoch (Macquarie University), Laura Chomiuk (Michigan State), Sumit Sarbadhicary (Michigan State)
on 29 May 2019; 23:58 UT
Credential Certification: Stuart Ryder (Stuart.Ryder@mq.edu.au)
Subjects: Radio, Supernovae
We report observations of 5 recent supernovae at 5.5 GHz and 9.0 GHz using the Australia Telescope Compact Array on 2019 May 17.1-17.4 UT. The targets included the Type Ia SN 2018fhw = ASASSN-18tb (ATel #11976, #11980) that has shown prominent H-alpha emission in the nebular phase (Kollmeier et al. 2019, MNRAS, 486, 3041); the Type II AT 2019eez = ASASSN-19kz (ATel #12706); SN 2019ejj (ATel #12721) and SN 2019fcn = ASASSN-19ml (ATel #12754), both of Type II in ESO 430-G020; and the Type IIn SN 2019esa (ATel #12736).
No radio counterparts were detected at the expected locations of any of the supernovae, to 3-sigma limits of ~0.07 mJy (5.5 GHz) and ~0.05 mJy (9.0 GHz). We would like to extend our thanks to the ATCA staff for enabling these observations. The Australia Telescope Compact Array is funded by the Commonwealth of Australia for operation as a National Facility managed by CSIRO.
