Circumstellar Interaction Powers the Light Curves of Luminous Rapidly Evolving Optical Transients

Abstract

Rapidly evolving transients, or objects that rise and fade in brightness on timescales two to three times shorter than those of typical Type Ia or Type II supernovae (SNe), have uncertain progenitor systems and powering mechanisms. Recent studies have noted similarities between rapidly evolving transients and Type Ibn SNe, which are powered by ejecta interacting with He-rich circumstellar material (CSM). In this work we present multiband photometric and spectroscopic observations from Las Cumbres Observatory and Swift of four fast-evolving Type Ibn SNe. We compare these observations with those of rapidly evolving transients identified in the literature. We discuss several common characteristics between these two samples, including their light curve and color evolution as well as their spectral features. To investigate a common powering mechanism we construct a grid of analytical model light curves with luminosity inputs from CSM interaction as well as ${}^{56}$Ni radioactive decay. We find that models with ejecta masses of $\approx 1-3$ M${}_{\odot }$, CSM masses of $\approx 0.2-1$ M${}_{\odot }$, and CSM radii of $\approx 20-65$ au can explain the diversity of peak luminosities, rise times, and decline rates observed in Type Ibn SNe and rapidly evolving transients. This suggests that a common progenitor system$-$the core collapse of a high-mass star within a dense CSM shell$-$can reproduce the light curves of even the most luminous and fast-evolving objects, such as AT 2018cow. This work is one of the first to reproduce the light curves of both SNe Ibn and other rapidly evolving transients with a single model.

24 pages, 11 figures, published in ApJ

References in corpus (66)

• Array Programming with NumPy
• Astropy: A Community Python Package for Astronomy
• emcee: The MCMC Hammer
• The Astropy Project: Building an inclusive, open-science project and status of the v2.0 core package
• Measuring Reddening with SDSS Stellar Spectra and Recalibrating SFD
• The Swift X-ray Telescope
• Binary interaction dominates the evolution of massive stars
• The Zwicky Transient Facility: System Overview, Performance, and First Results
• The Swift Ultra-Violet/Optical Telescope
• The u'g'r'i'z' Standard Star Network
• ATLAS: A High-Cadence All-Sky Survey System
• Las Cumbres Observatory Global Telescope Network
• Physical Properties of Wolf-Rayet Stars
• The Zwicky Transient Facility: Science Objectives
• WISeREP - An Interactive Supernova Data Repository
• The Fifth Data Release of the Sloan Digital Sky Survey
• A giant outburst two years before the core-collapse of a massive star
• On the role of continuum-driven eruptions in the evolution of very massive stars and Population III stars
• The diversity of Type II supernova versus the similarity in their progenitors
• A Wolf-Rayet-like progenitor of supernova SN 2013cu from spectral observations of a wind
• Rapidly-Evolving and Luminous Transients from Pan-STARRS1
• Generalized Semi-Analytical Models of Supernova Light Curves
• SN 2006jc: A Wolf-Rayet Star Exploding in a Dense He-Rich Circumstellar Medium
• The Zwicky Transient Facility Bright Transient Survey. II. A Public Statistical Sample for Exploring Supernova Demographics
• An embedded X-ray source shines through the aspherical AT2018cow: revealing the inner workings of the most luminous fast-evolving optical transients
• Supernova Light Curves Powered by Fallback Accretion
• Analytical Light Curve Models of Super-Luminous Supernovae: chi^2-Minimizations of Parameter Fits
• SOUSA: the Swift Optical/Ultraviolet Supernova Archive
• Preparing for an Explosion: Hydrodynamic Instabilities and Turbulence in Presupernovae
• Proper image subtraction - optimal transient detection, photometry and hypothesis testing
• Precursors prior to Type IIn supernova explosions are common: precursor rates, properties, and correlations
• The Cow: discovery of a luminous, hot and rapidly evolving transient
• The Fast, Luminous Ultraviolet Transient AT2018cow: Extreme Supernova, or Disruption of a Star by an Intermediate-Mass Black Hole?
• Core-collapse explosions of Wolf-Rayet stars and the connection to type IIb/Ib/Ic supernovae
• Setting the Stage for Circumstellar Interaction in Core-Collapse Supernovae II: Wave-Driven Mass Loss in Supernova Progenitors
• The Data Release of the Sloan Digital Sky Survey-II Supernova Survey
• Massive stars exploding in a He-rich circumstellar medium. I. Type Ibn (SN 2006jc-like) events
• Carnegie Supernova Project: Observations of Type IIn supernovae
• Dust Formation and He II 4686 emission in the Dense Shell of the Peculiar Type Ib Supernova 2006jc
• Early-time light curves of Type Ib/c supernovae from the SDSS-II Supernova Survey
• A large fraction of hydrogen-rich supernova progenitors experience elevated mass loss shortly prior to explosion
• Rapidly evolving transients in the Dark Energy Survey
• Rapidly Rising Transients in the Supernova - Superluminous Supernova Gap
• AT2018cow: a luminous millimeter transient
• Type Ibn Supernovae Show Photometric Homogeneity and Spectral Diversity at Maximum Light
• The Koala: A Fast Blue Optical Transient with Luminous Radio Emission from a Starburst Dwarf Galaxy at $z=0.27$
• Bright, months-long stellar outbursts announce the explosion of interaction-powered supernovae
• A mildly relativistic outflow from the energetic, fast-rising blue optical transient CSS161010 in a dwarf galaxy
• Shock-powered light curves of luminous red novae as signatures of pre-dynamical mass loss in stellar mergers
• Swift and Chandra Detections of Supernova 2006jc: Evidence for Interaction of the Supernova Shock with a Circumstellar Shell
• Strong late-time circumstellar interaction in the peculiar supernova iPTF14hls
• X-ray Swift observations of SN 2018cow
• SN 2011hw: Helium-Rich Circumstellar Gas and the Luminous Blue Variable to Wolf-Rayet Transition in Supernova Progenitors
• The Photometric System of Tsinghua-NAOC 80-cm Telescope at NAOC Xinglong Observatory
• Signatures of Circumstellar Interaction in the Unusual Transient AT2018cow
• Type Ibn Supernovae May not all Come from Massive Stars
• The Host Galaxies of Rapidly Evolving Transients in the Dark Energy Survey
• A Blast from the Pasture: Studying the environment of AT 2018cow with MUSE
• The Peculiar Transient AT2018cow: A Possible Origin of A Type Ibn/IIn Supernova
• Flash ionization signatures in the type Ibn supernova SN 2019uo
• The luminous and rapidly evolving SN 2018bcc: Clues toward the origin of Type Ibn SNe from the Zwicky Transient Facility
• LSQ13ddu: A rapidly-evolving stripped-envelope supernova with early circumstellar interaction signatures
• Extended Self-similar Solution for Circumstellar Material-Supernova Ejecta Interaction
• Early Ultra-Violet observations of type IIn supernovae constrain the asphericity of their circumstellar material
• Exploring the Energy Sources Powering the Light Curve of the Type Ibn Supernova PS15dpn and the Mass-Loss History of the SN Progenitor
• ASASSN-14ms:the Most Energetic Known Explosion of a Type Ibn Supernova and its Physical Origin

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• Late-time Hubble Space Telescope Observations of AT 2018cow. II. Evolution of a UV bright Underlying Source 2--4 Yr Post-discovery
• The Type Ibn Supernova 2019kbj -- Indications for Diversity in Type Ibn Supernova Progenitors
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• iPTF14hls in the circumstellar medium interaction model: A promising candidate for a pulsational pair-instability supernova
• Evolution of A Peculiar Type Ibn Supernova SN 2019wep
• Multi-wavelength observations of the Luminous Fast Blue Optical Transient AT2023fhn
• Late-time Hubble Space Telescope Observations of AT 2018cow. I. Further Constraints on the Fading Prompt Emission and Thermal Properties 50--60 Days Post-discovery
• Massive stars exploding in a He-rich circumstellar medium. XI. Diverse evolution of five Ibn SNe 2020nxt, 2020taz, 2021bbv, 2023utc and 2024aej
• A Population Study on the Radio Emission of Fast Blue Optical Transients
• Prospects for Time-Domain and Multi-Messenger Science with eXTP
• Insights into the Properties of Type Ibn/Icn Supernovae and Their Progenitor Channels through X-ray Emission
• Luminous Fast Blue Optical Transients as "Failed" Gravitational-wave Sources: Helium Core$-$Black Hole Mergers Following Delayed Dynamical Instability
• On the Binary Nature of the Progenitor of SN2015ap: Insights from Its Light Curve and Spectral Evolution
• Light-curve Modelling for The Initial Rising Phase of Rapidly-evolving Transients Powered by Continuous Outflow
• A study on late time UV-emission in core collapse supernovae and the implications for the peculiar transient AT2018cow
• Luminous Fast Blue Optical Transients and Type Ibn/Icn SNe from Wolf-Rayet/Black Hole Mergers