Galactic Positrons from Thermonuclear Supernovae
arXiv:2202.05417 · doi:10.3847/1538-4357/ac5253
Abstract
Type Ia Supernovae (SNe Ia) may originate from a wide variety of explosion scenarios and progenitor channels. They exhibit a factor of about 10 difference in brightness and, thus, a differentiation in the mass of 56Ni->56Co->56 Fe. We present a study on the fate of positrons within SNe Ia in order to evaluate their escape fractions and energy spectra. Our detailed Monte Carlo transport simulations for positrons and gamma-rays include both beta + decay of 56 Co and pair production. We simulate a wide variety of explosion scenarios, including the explosion of white dwarfs (WD) close to the Chandrasekhar mass, M(Ch), He-triggered explosions of sub-M Ch WDs, and dynamical mergers of two WDs. For each model, we study the influence of the size and morphology of the progenitor magnetic field between 1 and 1E13 G. Population synthesis based on the observed brightness distribution of SNe Ia was used to estimate the overall contributions to Galactic positrons due to escape from SN Ia. We find that this is dominated by normal-bright SNe Ia, where variations in the distribution of emitted positrons are small. We estimate a total SNe Ia contribution to the Galactic positrons of < 2% and, depending on the magnetic field morphology, less than 6...20% for M(Ch) and sub-M(Ch), respectively.
16 pages, 9 figures, 5 tables
References in corpus (66)
- LSST: from Science Drivers to Reference Design and Anticipated Data Products
- The Man Behind the Curtain: X-rays Drive the UV through NIR Variability in the 2013 AGN Outburst in NGC 2617
- Astrophysical magnetic fields and nonlinear dynamo theory
- ATLAS: A High-Cadence All-Sky Survey System
- The All-Sky Automated Survey for Supernovae (ASAS-SN) Light Curve Server v1.0
- Nearby Supernova Rates from the Lick Observatory Supernova Search. III. The Rate-Size Relation, and the Rates as a Function of Galaxy Hubble Type and Colour
- Normal Type Ia supernovae from violent mergers of white dwarf binaries
- Detonations in Sub-Chandrasekhar Mass C+O White Dwarfs
- The all-sky distribution of 511 keV electron-positron annihilation emission
- Sub-Chandrasekhar Mass Models For Type Ia Supernovae
- Optical Photometry of the Type Ia SN 1999ee and the Type Ib/c SN 1999ex in IC 5179
- Accelerating Compact Object Mergers in Triple Systems with the Kozai Resonance: A Mechanism for "Prompt" Type Ia Supernovae, Gamma-Ray Bursts, and Other Exotica
- The 511 keV emission from positron annihilation in the Galaxy
- Double-detonation sub-Chandrasekhar supernovae: synthetic observables for minimum helium shell mass models
- Head-on collisions of white dwarfs in triple systems could explain type Ia supernova
- Remnant evolution after a carbon-oxygen white dwarf merger
- The Carnegie Supernova Project: Intrinsic Colors of Type Ia Supernovae
- Binary Star Origin of High Field Magnetic White Dwarfs
- Violent mergers of nearly equal-mass white dwarf as progenitors of subluminous Type Ia supernovae
- Helium star donor channel for the progenitors of type Ia supernovae
- Collisions of white dwarfs as a new progenitor channel for type Ia supernovae
- Spectral analysis of the Galactic e+e- annihilation emission
- Simulations of the WFIRST Supernova Survey and Forecasts of Cosmological Constraints
- Observational Predictions for Sub-Chandrasekhar Mass Explosions: Further Evidence for Multiple Progenitor Systems for Type Ia Supernovae
- The True Incidence of Magnetism among Field White Dwarfs
- Cobalt-56 gamma-ray emission lines from the type Ia supernova 2014J
- Magnetic White Dwarfs from the SDSS. The First Data Release
- Gamma-ray spectroscopy of Positron Annihilation in the Milky Way
- The Initiation and Propagation of Helium Detonations in White Dwarf Envelopes
- Spin-Up/Spin-Down models for Type Ia Supernovae
- Stellar GADGET: A smooth particle hydrodynamics code for stellar astrophysics and its application to Type Ia supernovae from white dwarf mergers
- Early 56Ni decay γ-rays from SN2014J suggest an unusual explosion
- The normal Type Ia SN 2003hv out to very late phases
- Evolving to Type Ia Supernovae with Short Delay Times
- ZTF Early Observations of Type Ia Supernovae I: Properties of the 2018 Sample
- The Galactic Positron Annihilation Radiation & The Propagation of Positrons in the Interstellar Medium
- Evidence for sub-Chandrasekhar-mass progenitors of Type Ia supernovae at the faint end of the width-luminosity relation
- Light and color curve properties of type Ia supernovae: Theory vs. Observations
- Type Ia Supernovae with Bi-Modal Explosions Are Common -- Possible Smoking Gun for Direct Collisions of White-Dwarfs
- Greatly Enhanced Eccentricity Oscillations in Quadruple Systems Composed of Two Binaries: Implications for Stars, Planets, and Transients
- A single-degenerate model for the progenitor of the Type Ia supernova 2002ic
- The late-time light curve of the Type Ia supernova 2000cx
- Two transitional type~Ia supernovae located in the Fornax cluster member NGC 1404: SN 2007on and SN 2011iv
- Positron transport in the interstellar medium
- Nebular-Phase Spectra of Nearby Type Ia Supernovae
- SN 2005cg: Explosion Physics and Circumstellar Interaction of a Normal Type Ia Supernova in a Low-Luminosity Host
- Late-Time Photometry of Type Ia Supernova SN 2012cg Reveals the Radioactive Decay of Co
- New Close Binary Systems from the SDSS-I (Data Release Five) and the Search for Magnetic White Dwarfs in Cataclysmic Variable Progenitor Systems
- Thermonuclear Supernovae: Probing Magnetic Fields by Late-Time IR Line Profiles
- Mid-IR Spectra of Type Ia SN 2014J in M82 Spanning the First Four Months
- On the Ca-strong 1991bg-like type Ia supernova 2016hnk: evidence for a Chandrasekhar-mass explosion
- The Young and Nearby Normal Type Ia Supernova 2018gv: UV-Optical Observations and the Earliest Spectropolarimetry
- Three-Dimensional Simulation of Double-Detonations in the Double-Degenerate Model for Type Ia Supernovae and Interaction of Ejecta with a Surviving White Dwarf Companion
- Monte Carlo modelling of the propagation and annihilation of nucleosynthesis positrons in the Galaxy
- Late-time near-infrared observations of SN 2005df
- Late-time emission of type Ia supernovae: optical and near-infrared observations of SN 2001el
- Ca hnk: Calcium-rich Transient SN 2016hnk from the Helium Shell Detonation of a Sub-Chandrasekhar White Dwarf
- Late-time Flattening of Type Ia Supernova Light Curves: Constraints From SN 2014J in M82
- Very late photometry of SN 2011fe
- Near-infrared spectral evolution of the Type Ia supernova 2014J in the nebular phase: implications for the progenitor system
- Magneto-Hydrodynamical Effects on Nuclear Deflagration Fronts in Type Ia Supernovae
- Measuring an off-Center Detonation through Infrared Line Profiles: The peculiar Type Ia Supernova SN~2020qxp/ASASSN-20jq
- Galactic annihilation emission from nucleosynthesis positrons
- The ZTF-BTS Type Ia supernovae luminosity function is consistent with a single progenitor channel for the explosions
- Physics of Thermonuclear Explosions: Magnetic Field Effects on Deflagration Fronts and Observable Consequences
- Differentially Rotating White Dwarfs I: Regimes of Internal Rotation
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- JWST Low-Resolution MIRI Spectral Observations of SN~2021aefx: High-density Burning in a Type Ia Supernova
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- Updated Constraints on the Injection Energy of Positrons Generating the Galactic 511 keV -ray line