Radio Observations of Nova Muscae 2018 and Nova Carinae 2018 (ASASSN-18fv)
ATel #11504; S. D. Ryder (AAO), E. C. Kool (AAO/Macquarie University), L. Chomiuk (Michigan State)
on 5 Apr 2018; 18:53 UT
Credential Certification: Stuart Ryder (sdr@aao.gov.au)
Referred to by ATel #: 11506
The two optically-bright Galactic novae in Musca (CBET #4473, ATel #11183, #11201, #11212, #11296) and in Carina (ATel #11454, #11456, #11457, #11460, #11468) were observed at radio wavelengths using the Australia Telescope Compact Array (ATCA) on 2018 Apr 3.3 UT. Nova Muscae 2018 has faded by a factor of 3 at 9.0 and 5.5 GHz since peaking at >30 mJy/bm in mid-March. Observations are continuing in case Nova Muscae 2018 enters a second radio peak similar to that seen in the classical nova V1324 Sco (Finzell et al. 2018, ApJ, 852:108).
No radio emission was detected at the position of Nova Carinae 2018/ASASSN-18fv yielding 3-sigma upper limits of 0.3 milliJy/bm at 5.5 GHz, and 0.1 milliJy/bm at 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.
