Constraints on the origin of the first light from SN2014J

Abstract

We study the very early lightcurve of supernova 2014J (SN 2014J) using the high-cadence broad-band imaging data obtained by the Kilodegree Extremely Little Telescope (KELT), which fortuitously observed M 82 around the time of the explosion, starting more than two months prior to detection, with up to 20 observations per night. These observations are complemented by observations in two narrow-band filters used in an H$\alpha$ survey of nearby galaxies by the intermediate Palomar Transient Factory (iPTF) that also captured the first days of the brightening of the \sn. The evolution of the lightcurves is consistent with the expected signal from the cooling of shock heated material of large scale dimensions, $\gsim 1 R_{\odot}$. This could be due to heated material of the progenitor, a companion star or pre-existing circumstellar environment, e.g., in the form of an accretion disk. Structure seen in the lightcurves during the first days after explosion could also originate from radioactive material in the outer parts of an exploding white dwarf, as suggested from the early detection of gamma-rays. The model degeneracy translates into a systematic uncertainty of $\pm 0.3$ days on the estimate of the first light from SN 2014J.

Accepted by ApJ. Companion paper by Siverd et al, arXiv:1411.4150

References in corpus (16)

• The ACS Nearby Galaxy Survey Treasury
• Double-detonation sub-Chandrasekhar supernovae: synthetic observables for minimum helium shell mass models
• Extensive HST Ultraviolet Spectra and Multi-wavelength Observations of SN 2014J in M82 Indicate Reddening and Circumstellar Scattering by Typical Dust
• The rise of SN2014J in the nearby galaxy M82
• The Rise and Fall of Type Ia Supernova Light Curves in the SDSS-II Supernova Survey
• No X-rays from the very nearby Type Ia SN2014J: constraints on its environment
• Early 56Ni decay γ-rays from SN2014J suggest an unusual explosion
• The impact of type Ia supernovae on main sequence binary companions
• The Rise Time of Type Ia Supernovae from the Supernova Legacy Survey
• The Viscous Evolution of White Dwarf Merger Remnants
• Constraints on the progenitor system and the environs of SN 2014J from deep radio observations
• Constraints on the Progenitor System of the Type Ia Supernova 2014J from Pre-Explosion Hubble Space Telescope Imaging
• Optical and Near-Infrared Polarimetry of Highly Reddened Type Ia Supernova 2014J: Peculiar Properties of Dust in M82
• Photometric and spectroscopic observations, and abundance tomography modelling of the type Ia supernova SN 2014J located in M82
• Light curves of five type Ia supernovae at intermediate redshift
• Observations of the M82 SN 2014J with the Kilodegree Extremely Little Telescope

Cited by in corpus (16)

• Type Ia Supernova Explosions in Binary Systems: A Review
• Early Blue Excess from the Type Ia Supernova 2017cbv and Implications for Its Progenitor
• ZTF Early Observations of Type Ia Supernovae I: Properties of the 2018 Sample
• Early light curves for Type Ia supernova explosion models
• No trace of a single-degenerate companion in late spectra of SNe 2011fe and 2014J
• Strong gravitational lensing and microlensing of supernovae
• Early observations of the nearby type Ia supernova SN 2015F
• Constraining the double-degenerate scenario for Type Ia supernovae from merger ejected matter
• Time-Varying Potassium in High-Resolution Spectra of the Type Ia Supernova 2014J
• The Deepest Radio Observations of Nearby Type IA Supernovae: Constraining Progenitor Types and Optimizing Future Surveys
• Constraining Type Ia supernova explosions and early flux excesses with the Zwicky Transient Factory
• Infant-phase reddening by surface Fe-peak elements in a normal Type Ia Supernova
• Revealing progenitors of type Ia supernovae from their light curves and spectra
• Observations of the M82 SN 2014J with the Kilodegree Extremely Little Telescope
• From Out of the Blue: Swift Links 2002es-like, 2003fg-like, and Early-Time Bump Type Ia Supernovae
• Rapidly-Declining Hostless Type Ia Supernova KSP-OT-201509b from the KMTNet Supernova Program: Transitional Nature and Constraint on ${}^{56}$Ni Distribution and Progenitor Type