Time-Varying Extinction, Polarization, and Colors of Type Ia Supernovae due to Rotational Disruption of Dust Grains

Abstract

Photometric and polarimetric observations toward type Ia supernovae (SNe Ia) frequently report an unusually low total-to-selective extinction ratio ($R_{\mathrm{V}}<2$) and small peak wavelength of polarization (${\lambda }_{\max }<0.4\mu m$). Recently, Hoang et al. proposed that the increase in the abundance of small grains relative to large grains near SNe Ia due to RAdiative Torque Disruption (RATD) can explain this puzzle. To test this scenario, we will perform detailed modeling of dust extinction and polarization of SNe Ia accounting for grain disruption by RATD and grain alignment by RAdiative Torques (RATs). For dust clouds at distance $d<4$ pc from the source, we find that $R_{\mathrm{V}}$ decreases rapidly from the standard value of $3.1$ to $\sim 1.5$ after a disruption time $t_{\mathrm{disr}}\le 40$ days. We then calculate the observed SNe Ia light curve and find that the colors of SNe Ia would change with time due to time-varying extinction for dust clouds at distance of $d<4$ pc. We also calculate the wavelength-dependence polarization produced by grains aligned with the magnetic fields by RATs. We find that ${\lambda }_{\max }$ decreases rapidly from $\sim 0.55\mu$m to $\sim 0.15\mu$m over an alignment time of $t_{\mathrm{align}}<10$ days due to the enhanced alignment of small grains. By fitting the theoretical polarization curve with the Serkowski law, we find that the parameter $K$ from the Serkowski law increases when large grains are disrupted by RATD which can explain the $K$ vs. ${\lambda }_{\max }$ data observed for SNe Ia. Finally, we discover an anti-correlation between $K$ and $R_{\mathrm{V}}$ which might already be supported by SNe Ia observational data. Our results demonstrate the important effect of rotational disruption of dust grains by radiative torques on the time-dependent extinction, polarization, and colors of SNe Ia.

arXiv comment22 figures, 24 pages

References in corpus (43)

• Observational Evidence from Supernovae for an Accelerating Universe and a Cosmological Constant
• Dust Grain Size Distributions and Extinction in the Milky Way, LMC, and SMC
• Interstellar Dust Grains
• Infrared Emission from Interstellar Dust. IV. The Silicate-Graphite-PAH Model in the Post-Spitzer Era
• Infrared Emission from Interstellar Dust. II. The Diffuse Interstellar Medium
• Type Ia Supernova Explosion Models
• Electric Dipole Radiation from Spinning Dust Grains
• Radiative torques: Analytical Model and Basic Properties
• Radiative Torques on Interstellar Grains: I. Superthermal Spinup
• Dust sublimation by GRBs and its implications
• On the Source of the Dust Extinction in Type Ia Supernovae and the Discovery of Anomalously Strong Na I Absorption
• The Risetime of Nearby Type Ia Supernovae
• The Carnegie Supernova Project: Intrinsic Colors of Type Ia Supernovae
• Radiative torque alignment: Essential Physical Processes
• Low R_v from circumstellar dust around supernovae
• A unified model of grain alignment: radiative alignment of interstellar grains with magnetic inclusions
• Extensive HST Ultraviolet Spectra and Multi-wavelength Observations of SN 2014J in M82 Indicate Reddening and Circumstellar Scattering by Typical Dust
• Grain Alignment by Radiative Torques in Special Conditions and Implications
• Rotational Disruption of Dust Grains by Radiative Torques in Strong Radiation Fields
• Diversity in extinction laws of Type Ia supernovae measured between $0.2$ and $2\mu \mathrm{m}$
• The peculiar extinction law of SN2014J measured with The Hubble Space Telescope
• The colour-lightcurve shape relation of Type Ia supernovae and the reddening law
• The Detection of a Light Echo from the Type Ia Supernova 2006X in M100
• VLT Spectropolarimetry of the fast expanding Type Ia SN2006X
• Radiative torques alignment in the presence of pinwheel torques
• Spectropolarimetry of the 3.4 micron Feature in the Diffuse ISM toward the Galactic Center Quintuplet Cluster
• A dynamical constraint on interstellar dust models from radiative torque disruption
• Properties of extragalactic dust inferred from linear polarimetry of Type Ia Supernovae
• Evidence for Type Ia Supernova Diversity from Ultraviolet Observations with the Hubble Space Telescope
• Optical and Near-Infrared Polarimetry of Highly Reddened Type Ia Supernova 2014J: Peculiar Properties of Dust in M82
• Constraint on the Polarization of Electric Dipole Emission from Spinning Dust
• Swift Ultraviolet Observations of Supernova 2014J in M82: Large Extinction from Interstellar Dust
• Magnetic Properties of Dust Grains, Effect of Precession and Radiative Torque Alignment
• Paramagnetic alignment of small grains: a novel method for measuring interstellar magnetic fields
• Radiative torques of irregular grains: Describing the alignment of a grain ensemble
• Shedding light on the Type Ia supernova extinction puzzle: dust location found
• Properties and alignment of interstellar dust grains toward Type Ia Supernovae with anomalous polarization curves
• Estimating dust distances to Type Ia supernovae from colour excess time-evolution
• Determining Type Ia Supernovae Host galaxy extinction probabilities and a statistical approach to estimating the absorption-to-reddening ratio $R_V$
• An Empirical Fitting Method for Type Ia Supernova Light Curves. II. Estimating the First-Light Time and Rise Time
• Dense molecular clouds in the SN2008fp host galaxy
• Continuum Foreground Polarization and Na~I Absorption in Type Ia SNe
• Spectropolarimetry of Galactic stars with anomalous extinction sightlines

Cited by in corpus (1)

• Magnetic Properties of Dust Grains, Effect of Precession and Radiative Torque Alignment