English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Tools annual

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools monthly

Global: Zendy Plus monthly

Presents the access of premium content as premium feature

Premium Content

Global: Zendy Plus annual

Global: Zendy Free Plan

We present the detection of an unresolved radio source coincident with theposition of the Type I superluminous supernova (SLSN) PTF10hgi ($z=0.098$)about 7.5 years post-explosion, with a flux density of $F_\nu(6\,\,{\rmGHz)}\approx 47.3\ \mu Jy$ and a luminosity of $L_\nu(6\,\,{\rm GHz})\approx1.1\times 10^{28}$ erg s$^{-1}$ Hz$^{-1}$. This represents the first detectionof radio emission coincident with a SLSN on any timescale. We investigatevarious scenarios for the origin of the radio emission: star formationactivity, an active galactic nucleus, and a non-relativistic supernovablastwave. While any of these would be quite novel if confirmed, none appearlikely when taken in context of the other properties of the host galaxy,previous radio observations of SLSNe, and the general population ofhydrogen-poor SNe. Instead, the radio emission is reminiscent of the quiescentradio source associated with the repeating FRB 121102, which has been argued tobe powered by a magnetar born in a SLSN or LGRB explosion several decades ago.We show that the properties of the radio source are consistent with a magnetarwind nebula or an off-axis jet, indicating the presence of a central engine.Our directed search for FRBs from the location of PTF10hgi using 40 min of VLAphased-array data reveals no detections to a limit of $22$ mJy ($10\sigma$; 10ms duration). We outline several follow-up observations that can conclusivelyestablish the origin of the radio emission.

A Radio Source Coincident with the Superluminous Supernova PTF10hgi: Evidence for a Central Engine and an Analogue of the Repeating FRB121102?