Explosions Driven by the Coalescence of a Compact Object with the Core of a Massive-star Companion inside a Common Envelope: Circumstellar Properties, Light Curves, and Population Statistics

Research output: Contribution to journalJournal articlepeer-review

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Explosions Driven by the Coalescence of a Compact Object with the Core of a Massive-star Companion inside a Common Envelope : Circumstellar Properties, Light Curves, and Population Statistics. / Schroder, Sophie Lund; MacLeod, Morgan; Loeb, Abraham; Vigna-Gomez, Alejandro; Mandel, Ilya.

In: Astrophysical Journal, Vol. 892, No. 1, 13, 20.03.2020.

Research output: Contribution to journalJournal articlepeer-review

Harvard

Schroder, SL, MacLeod, M, Loeb, A, Vigna-Gomez, A & Mandel, I 2020, 'Explosions Driven by the Coalescence of a Compact Object with the Core of a Massive-star Companion inside a Common Envelope: Circumstellar Properties, Light Curves, and Population Statistics', Astrophysical Journal, vol. 892, no. 1, 13. https://doi.org/10.3847/1538-4357/ab7014

APA

Schroder, S. L., MacLeod, M., Loeb, A., Vigna-Gomez, A., & Mandel, I. (2020). Explosions Driven by the Coalescence of a Compact Object with the Core of a Massive-star Companion inside a Common Envelope: Circumstellar Properties, Light Curves, and Population Statistics. Astrophysical Journal, 892(1), [13]. https://doi.org/10.3847/1538-4357/ab7014

Vancouver

Schroder SL, MacLeod M, Loeb A, Vigna-Gomez A, Mandel I. Explosions Driven by the Coalescence of a Compact Object with the Core of a Massive-star Companion inside a Common Envelope: Circumstellar Properties, Light Curves, and Population Statistics. Astrophysical Journal. 2020 Mar 20;892(1). 13. https://doi.org/10.3847/1538-4357/ab7014

Author

Schroder, Sophie Lund ; MacLeod, Morgan ; Loeb, Abraham ; Vigna-Gomez, Alejandro ; Mandel, Ilya. / Explosions Driven by the Coalescence of a Compact Object with the Core of a Massive-star Companion inside a Common Envelope : Circumstellar Properties, Light Curves, and Population Statistics. In: Astrophysical Journal. 2020 ; Vol. 892, No. 1.

Bibtex

@article{8f803891510a43868a9b78751dc1241d,
title = "Explosions Driven by the Coalescence of a Compact Object with the Core of a Massive-star Companion inside a Common Envelope: Circumstellar Properties, Light Curves, and Population Statistics",
abstract = "We model explosions driven by the coalescence of a black hole or neutron star with the core of its massive-star companion. Upon entering a common-envelope phase, a compact object may spiral all the way to the core. The concurrent release of energy is likely to be deposited into the surrounding common envelope, powering a merger-driven explosion. We use hydrodynamic models of binary coalescence to model the common-envelope density distribution at the time of coalescence. We find toroidal profiles of material, concentrated in the binary's equatorial plane and extending to many times the massive star's original radius. We use the spherically averaged properties of this circumstellar material (CSM) to estimate the emergent light curves that result from the interaction between the blast wave and the CSM. We find that typical merger-driven explosions are brightened by up to three magnitudes by CSM interaction. From population synthesis models, we discover that the brightest merger-driven explosions, M-V similar to -18 to -20, are those involving black holes because they have the most massive and extended CSM. Black hole coalescence events are also common; they represent about 50% of all merger-driven explosions and approximately 0.25% of the core-collapse rate. Merger-driven explosions offer a window into the highly uncertain physics of common-envelope interactions in binary systems by probing the properties of systems that merge rather than eject their envelopes.",
keywords = "Close binary stars, Stellar evolution, Astronomical simulations, NEUTRON-STAR, BLACK-HOLE, HYPERCRITICAL ACCRETION, SUPERNOVA EJECTA, SHOCK BREAKOUT, SN 2009IP, EVOLUTION, JETS, MODEL, MERGERS",
author = "Schroder, {Sophie Lund} and Morgan MacLeod and Abraham Loeb and Alejandro Vigna-Gomez and Ilya Mandel",
year = "2020",
month = mar,
day = "20",
doi = "10.3847/1538-4357/ab7014",
language = "English",
volume = "892",
journal = "Astrophysical Journal",
issn = "0004-637X",
publisher = "Institute of Physics Publishing, Inc",
number = "1",

}

RIS

TY - JOUR

T1 - Explosions Driven by the Coalescence of a Compact Object with the Core of a Massive-star Companion inside a Common Envelope

T2 - Circumstellar Properties, Light Curves, and Population Statistics

AU - Schroder, Sophie Lund

AU - MacLeod, Morgan

AU - Loeb, Abraham

AU - Vigna-Gomez, Alejandro

AU - Mandel, Ilya

PY - 2020/3/20

Y1 - 2020/3/20

N2 - We model explosions driven by the coalescence of a black hole or neutron star with the core of its massive-star companion. Upon entering a common-envelope phase, a compact object may spiral all the way to the core. The concurrent release of energy is likely to be deposited into the surrounding common envelope, powering a merger-driven explosion. We use hydrodynamic models of binary coalescence to model the common-envelope density distribution at the time of coalescence. We find toroidal profiles of material, concentrated in the binary's equatorial plane and extending to many times the massive star's original radius. We use the spherically averaged properties of this circumstellar material (CSM) to estimate the emergent light curves that result from the interaction between the blast wave and the CSM. We find that typical merger-driven explosions are brightened by up to three magnitudes by CSM interaction. From population synthesis models, we discover that the brightest merger-driven explosions, M-V similar to -18 to -20, are those involving black holes because they have the most massive and extended CSM. Black hole coalescence events are also common; they represent about 50% of all merger-driven explosions and approximately 0.25% of the core-collapse rate. Merger-driven explosions offer a window into the highly uncertain physics of common-envelope interactions in binary systems by probing the properties of systems that merge rather than eject their envelopes.

AB - We model explosions driven by the coalescence of a black hole or neutron star with the core of its massive-star companion. Upon entering a common-envelope phase, a compact object may spiral all the way to the core. The concurrent release of energy is likely to be deposited into the surrounding common envelope, powering a merger-driven explosion. We use hydrodynamic models of binary coalescence to model the common-envelope density distribution at the time of coalescence. We find toroidal profiles of material, concentrated in the binary's equatorial plane and extending to many times the massive star's original radius. We use the spherically averaged properties of this circumstellar material (CSM) to estimate the emergent light curves that result from the interaction between the blast wave and the CSM. We find that typical merger-driven explosions are brightened by up to three magnitudes by CSM interaction. From population synthesis models, we discover that the brightest merger-driven explosions, M-V similar to -18 to -20, are those involving black holes because they have the most massive and extended CSM. Black hole coalescence events are also common; they represent about 50% of all merger-driven explosions and approximately 0.25% of the core-collapse rate. Merger-driven explosions offer a window into the highly uncertain physics of common-envelope interactions in binary systems by probing the properties of systems that merge rather than eject their envelopes.

KW - Close binary stars

KW - Stellar evolution

KW - Astronomical simulations

KW - NEUTRON-STAR

KW - BLACK-HOLE

KW - HYPERCRITICAL ACCRETION

KW - SUPERNOVA EJECTA

KW - SHOCK BREAKOUT

KW - SN 2009IP

KW - EVOLUTION

KW - JETS

KW - MODEL

KW - MERGERS

U2 - 10.3847/1538-4357/ab7014

DO - 10.3847/1538-4357/ab7014

M3 - Journal article

VL - 892

JO - Astrophysical Journal

JF - Astrophysical Journal

SN - 0004-637X

IS - 1

M1 - 13

ER -

ID: 247442338