Using 44Ti emission to differentiate between thermonuclear supernova progenitors

Daniel Kosakowski; Mark Ivan Ugalino; Robert Fisher; Or Graur; Alexey Bobrick; Hagai B. Perets

doi:10.1093/mnrasl/slac152

Using ⁴⁴Ti emission to differentiate between thermonuclear supernova progenitors

Daniel Kosakowski, Mark Ivan Ugalino, Robert Fisher, Or Graur, Alexey Bobrick, Hagai B. Perets

Research output: Contribution to journal › Article › Research › peer-review

7 Citations (Scopus)

Abstract

The radioisotope 44Ti is produced through α-rich freezeout and explosive helium burning in type Ia supernovae (SNe Ia). In this paper, we discuss how the detection of 44Ti, either through late-time light curves of SNe Ia, or directly via gamma-rays, can uniquely constrain the origin of SNe Ia. In particular, building upon recent advances in the hydrodynamical simulation of helium-ignited double white dwarf binaries, we demonstrate that the detection of 44Ti in a nearby SN Ia or in a young Galactic supernova remnant (SNR) can discriminate between the double-detonation and double-degenerate channels of sub-Chandrasekhar (sub-MCh) and near-Chandrasekhar (near-MCh) SNe Ia. In addition, we predict that the late-time light curves of calcium-rich transients are entirely dominated by 44Ti.

Original language	English
Pages (from-to)	L74-L78
Number of pages	5
Journal	Monthly Notices of the Royal Astronomical Society: Letters
Volume	519
Issue number	1
DOIs	https://doi.org/10.1093/mnrasl/slac152
Publication status	Published - Feb 2023
Externally published	Yes

Keywords

nuclear reactions, nucleosynthesis, abundances
transients: supernovae
white dwarfs

Access to Document

10.1093/mnrasl/slac152

Cite this

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title = "Using 44Ti emission to differentiate between thermonuclear supernova progenitors",

abstract = "The radioisotope 44Ti is produced through α-rich freezeout and explosive helium burning in type Ia supernovae (SNe Ia). In this paper, we discuss how the detection of 44Ti, either through late-time light curves of SNe Ia, or directly via gamma-rays, can uniquely constrain the origin of SNe Ia. In particular, building upon recent advances in the hydrodynamical simulation of helium-ignited double white dwarf binaries, we demonstrate that the detection of 44Ti in a nearby SN Ia or in a young Galactic supernova remnant (SNR) can discriminate between the double-detonation and double-degenerate channels of sub-Chandrasekhar (sub-MCh) and near-Chandrasekhar (near-MCh) SNe Ia. In addition, we predict that the late-time light curves of calcium-rich transients are entirely dominated by 44Ti.",

keywords = "nuclear reactions, nucleosynthesis, abundances, transients: supernovae, white dwarfs",

author = "Daniel Kosakowski and Ugalino, \{Mark Ivan\} and Robert Fisher and Or Graur and Alexey Bobrick and Perets, \{Hagai B.\}",

note = "Publisher Copyright: {\textcopyright} 2022 The Author(s) Published by Oxford University Press on behalf of Royal Astronomical Society.",

year = "2023",

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doi = "10.1093/mnrasl/slac152",

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volume = "519",

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T1 - Using 44Ti emission to differentiate between thermonuclear supernova progenitors

AU - Kosakowski, Daniel

AU - Ugalino, Mark Ivan

AU - Fisher, Robert

AU - Graur, Or

AU - Bobrick, Alexey

AU - Perets, Hagai B.

PY - 2023/2

Y1 - 2023/2

N2 - The radioisotope 44Ti is produced through α-rich freezeout and explosive helium burning in type Ia supernovae (SNe Ia). In this paper, we discuss how the detection of 44Ti, either through late-time light curves of SNe Ia, or directly via gamma-rays, can uniquely constrain the origin of SNe Ia. In particular, building upon recent advances in the hydrodynamical simulation of helium-ignited double white dwarf binaries, we demonstrate that the detection of 44Ti in a nearby SN Ia or in a young Galactic supernova remnant (SNR) can discriminate between the double-detonation and double-degenerate channels of sub-Chandrasekhar (sub-MCh) and near-Chandrasekhar (near-MCh) SNe Ia. In addition, we predict that the late-time light curves of calcium-rich transients are entirely dominated by 44Ti.

AB - The radioisotope 44Ti is produced through α-rich freezeout and explosive helium burning in type Ia supernovae (SNe Ia). In this paper, we discuss how the detection of 44Ti, either through late-time light curves of SNe Ia, or directly via gamma-rays, can uniquely constrain the origin of SNe Ia. In particular, building upon recent advances in the hydrodynamical simulation of helium-ignited double white dwarf binaries, we demonstrate that the detection of 44Ti in a nearby SN Ia or in a young Galactic supernova remnant (SNR) can discriminate between the double-detonation and double-degenerate channels of sub-Chandrasekhar (sub-MCh) and near-Chandrasekhar (near-MCh) SNe Ia. In addition, we predict that the late-time light curves of calcium-rich transients are entirely dominated by 44Ti.

KW - nuclear reactions, nucleosynthesis, abundances

KW - transients: supernovae

KW - white dwarfs

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DO - 10.1093/mnrasl/slac152

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JO - Monthly Notices of the Royal Astronomical Society: Letters

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