Radio observations of SN2004dk with VLITE confirm late-time re-brightening

Abstract

The study of stripped-envelope core-collapse supernovae (SNe), with evidence for strong interaction of SN ejecta with the circumstellar medium (CSM), provides insights into the pre-supernova progenitor, and a fast-forwarded view of the progenitor mass-loss history. In this context, we present late-time radio observations of SN2004dk, a type Ibc supernova located in the galaxy, NGC 6118, at a distance of $d_L\approx 23$ Mpc. About 15 years after explosion, SN2004dk has shown evidence for H$\alpha$ emission, possibly linked to the SN ejecta interacting with an H-rich CSM. Using data from the VLA Low Band Ionosphere and Transient Experiment (VLITE), we confirm the presence of a late-time radio re-brightening accompanying the observed H$\alpha$ emission. We model the SN2004dk radio light curves within the (spherically symmetric) synchrotron-self-absorption (SSA) model. Within this model, our VLITE observations combined with previously collected VLA data favor an interpretation of SN2004dk as a strongly CSM-interacting radio SN going through a complex environment shaped by a non-steady mass-loss from the SN progenitor.

10 pages, 4 figures. Published in ApJ

References in corpus (9)

• DiFX: A software correlator for very long baseline interferometry using multi-processor computing environments
• Circumstellar Emission from Type Ib and Ic Supernovae
• The Zwicky Transient Facility Bright Transient Survey. II. A Public Statistical Sample for Exploring Supernova Demographics
• Long Term Radio Monitoring of SN 1993J
• SN 2007bg: The Complex Circumstellar Environment Around One of the Most Radio-Luminous Broad-Lined Type Ic Supernovae
• The peculiar mass-loss history of SN 2014C as revealed through AMI radio observations
• Supernova Interaction with a Dense Detached Shell in SN 2001em
• Interaction of SN~Ib 2004dk with a Previously-Expelled Envelope
• Searching for the expelled hydrogen envelope in Type I supernovae via late-time H-alpha emission

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• The radio re-brightening of the Type IIb SN 2001ig
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