Radio Emission from Ultra-stripped Supernovae as Diagnostics for Properties of the Remnant Double Neutron Star Binaries

Abstract

An ultra-stripped supernova (SN) is an explosion of a helium or C+O star whose outer envelope has been stripped away by a companion neutron star. A double neutron star (DNS) binary is believed to be left after the explosion, which will emit the gravitational wave later at the coalescence. Recent detections of a few candidates for the ultra-stripped SN have constrained the properties of the explosion and the progenitor, but little information is given as to whether the remnant DNS binary will merge within the cosmic age. A large fraction of the material stripped away from the helium star through the binary interaction is expected to escape from the system and form circumstellar material (CSM). The CSM should be traced by radio emission induced by the collision with the SN ejecta. Based on the stellar evolution models previously developed, we calculate the expected radio luminosities from ultra-stripped SNe. We find that high radio luminosity at its maximum can be an indicator of small separation of a DNS binary leading to its merger within the cosmic age. Our results can be used to optimize the strategy for the radio follow-up observations such as observational epochs and frequencies.

15 pages, 26 figures, accepted for publication in ApJ

References in corpus (12)

• GW170817: Observation of Gravitational Waves from a Binary Neutron Star Inspiral
• Multi-messenger Observations of a Binary Neutron Star Merger
• Gravitational Waves and Gamma-rays from a Binary Neutron Star Merger: GW170817 and GRB 170817A
• The Electromagnetic Counterpart of the Binary Neutron Star Merger LIGO/VIRGO GW170817. II. UV, Optical, and Near-IR Light Curves and Comparison to Kilonova Models
• Formation of Double Neutron Star Systems
• Particle acceleration in relativistic collisionless shocks: Fermi process at last?
• Confined Dense Circumstellar Material Surrounding a Regular Type II Supernova: The Unique Flash-Spectroscopy Event of SN 2013fs
• Kilonova from post-merger ejecta as an optical and near-infrared counterpart of GW170817
• Circumstellar Emission from Type Ib and Ic Supernovae
• Simulations and Theory of Ion Injection at Non-relativistic Collisionless Shocks
• PSR J1930-1852: a pulsar in the widest known orbit around another neutron star
• Super-Eddington accretion discs with advection and outflows around magnetized neutron stars

Cited by in corpus (6)

• Late-time Observations of Calcium-Rich Transient SN 2019ehk Reveal a Pure Radioactive Decay Power Source
• Radio Analysis of SN 2004C Reveals an Unusual CSM Density Profile as a Harbinger of Core Collapse
• Probing pre-supernova mass loss in double-peaked Type Ibc supernovae from the Zwicky Transient Facility
• Origin of Spectral Hardening of Secondary Cosmic-Ray Nuclei
• SN 2023zaw: an ultra-stripped, nickel-poor supernova from a low-mass progenitor
• Long-term evolution of a supernova remnant hosting a double neutron star binary