Support ATel At Patreon

[ Previous | Next | ADS ]

AT2018cow: NOEMA millimetre detection

ATel #11749; A. de Ugarte Postigo (HETH/IAA-CSIC, DARK/NBI), M. Bremer (IRAM), D. A. Kann (HETH/IAA-CSIC), L. Izzo (HETH/IAA-CSIC), C. C. Thoene (HETH/IAA-CSIC), S. Schulze (Weizmann), D. Perley (LJMU), S. Martin (ALMA), D. B. Malesani (DARK/DAWN, NBI), M. Michalowski (AOI/AMU), I. de Gregorio-Monsalvo (ALMA), K. Bensch (HETH/IAA-CSIC), M. Blazek (HETH/IAA-CSIC), R. Sanchez-Ramirez (INAF-IAPS), S. Kim (PUC), M. Krips (IRAM)
on 21 Jun 2018; 12:11 UT
Distributed as an Instant Email Notice Transients
Credential Certification: Antonio de Ugarte Postigo (adeugartepostigo@gmail.com)

Subjects: Millimeter, Gamma-Ray Burst, Transient

Referred to by ATel #: 11753, 11776, 11781

We observed the transient ATLAS18qqn/AT2018cow (ATels: #11727, #11729, #11732, #11734, #11736, #11737, #11738, #11740, #11741, #11742, #11743, #11744, #11748) using NOEMA. The observation started on 20 June 2018 at 21:55 UT and was performed in the 90 and 150 GHz bands. The object is well detected in both bands, and a preliminary reduction delivers a flux density of ~6mJy at 90GHz. The coordinates of the source are (J2000):

R.A.: 16:16:00.254
Dec.: 22:16:05.10

This detection indicates that there is a strong non-thermal contribution to the emission, which favours the interpretation of this transient as a relativistic event.