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Radio Observations of SN 2018ec

ATel #11224; S. Ryder (AAO), E. Kool (Macquarie University/AAO), E. Kankare (QUB), S. Mattila (Turku), R. Kotak (Turku), J. Kotilainen (Turku), H. Kuncarayakti (Turku), M. Perez-Torres (IAA-CSIC, Granada), Z. Randriamanakoto (University of Cape Town), T. Reynolds (Turku), C. Romero-Canizales (UDP), S. Smartt (QUB), P. Vaisanen (SAAO), C. Stockdale (Marquette), G. Anderson (Curtin)
on 25 Jan 2018; 00:44 UT
Credential Certification: Stuart Ryder (sdr@aao.gov.au)

Subjects: Radio, Supernovae, Transient

The Type Ic SN 2018ec (ATel #11156, #11160) in the nearby Luminous Infrared Galaxy NGC 3256 has been observed with the Australia Telescope Compact Array (ATCA) at 5.5 and 9.0 GHz on 2018 Jan 23.8 UT. No radio emission was detected at the reported location, to a 3-sigma upper limit of 10 milliJy/beam (5.5 GHz) and 3.6 milliJy/beam (9.0 GHz). These somewhat large upper limits are due to the limited uv-coverage, plus the close proximity of the SN (10") to the core emission from NGC 3256 (0.2 Jy at 5.5 GHz). Adopting the host galaxy distance of 37.4 Mpc from Tully (1988, Nearby Galaxy Catalog) this implies an upper limit on the 9 GHz luminosity at an age of at least one month of 6E27 erg/s/Hz. 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.