Constraining spacetime variations of nuclear decay rates from light curves of type Ia supernovae

Abstract

The luminosity of fading type Ia supernovae is governed by radioactive decays of 56Ni and 56Co. The decay rates are proportional to the Fermi coupling constant G_F and, therefore, are determined by the vacuum expectation value v of the Brout-Englert-Higgs field. We use publicly available sets of light curves of type Ia supernova at various redshifts to constrain possible spacetime variations of the 56Ni decay rate. The resulting constraint is not very tight; however, it is the only direct bound on the variation of the decay rate for redshifts up to z~1. We discuss potential applications of the result to searches for non-constancy of G_F and v.

arXiv comment11 pages, 2 figures. V2: larger data set used, constraints improved significantly; text revised considerably

References in corpus (21)

• The Supernova Legacy Survey: Measurement of Omega_M, Omega_Lambda and w from the First Year Data Set
• Improved cosmological constraints from a joint analysis of the SDSS-II and SNLS supernova samples
• The Hubble Space Telescope Cluster Supernova Survey: V. Improving the Dark Energy Constraints Above z>1 and Building an Early-Type-Hosted Supernova Sample
• Varying constants, Gravitation and Cosmology
• Frequency ratio of two optical clock transitions in ${}^{171}$Yb${}^{+}$ and constraints on the time-variation of fundamental constants
• Improved limit on a temporal variation of $m_p/m_e$ from comparisons of Yb${}^{+}$ and Cs atomic clocks
• K-corrections and Extinction Corrections for Type Ia Supernovae
• Cobalt-56 gamma-ray emission lines from the type Ia supernova 2014J
• Ages of Type Ia Supernovae Over Cosmic Time
• Early 56Ni decay γ-rays from SN2014J suggest an unusual explosion
• The Rise Time of Type Ia Supernovae from the Supernova Legacy Survey
• Predicted and observed evolution in the mean properties of Type Ia supernovae with redshift
• A Re-examination of the ${}^{187}$Re Bound on the Variation of Fundamental Couplings
• The Constancy of the Constants of Nature: Updates
• Constraints on changes in the proton-electron mass ratio using methanol lines
• How fundamental are fundamental constants?
• Constraining the variation of fundamental constants at z ~ 1.3 using 21-cm absorbers
• Early Universe Constraints on Time Variation of Fundamental Constants
• Fundamental constants and high resolution spectroscopy
• The clustering of galaxies in the SDSS-III Baryon Oscillation Spectroscopic Survey: constraints on the time variation of fundamental constants from the large-scale two-point correlation function
• Limits on the Time Variation of the Fermi Constant G_F Based on Type Ia Supernova Observations

Cited by in corpus (1)

• The minimally extended Varying Speed of Light (meVSL)