Accreting Double White Dwarf Binaries

Implications for LISA

Kyle Kremer, Katelyn Breivik, Shane Louis Larson, Vicky Kalogera

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

We explore the long-term evolution of mass-transferring white dwarf (WD) binaries undergoing both direct-impact and disk accretion and explore implications of such systems to gravitational-wave (GW) astronomy. We cover a broad range of initial component masses and show that these systems, the majority of which lie within the Laser Interferometer Space Antenna (LISA) sensitivity range, exhibit prominent negative orbital frequency evolution (chirp) for a significant fraction of their lifetimes. Using a galactic population synthesis, we predict ∼2700 of these systems will be observable with a negative chirp of 0.1 yr-2 by a space-based GW detector like LISA. We also show that detections of mass-transferring double WD systems by LISA may provide astronomers with unique ways of probing the physics governing close compact object binaries.

Original languageEnglish (US)
Article number95
JournalAstrophysical Journal
Volume846
Issue number2
DOIs
StatePublished - Sep 10 2017

Fingerprint

LISA (observatory)
interferometer
antenna
laser
chirp
gravitational waves
astronomy
accretion disks
orbitals
life (durability)
physics
sensitivity
detectors
accretion
synthesis

Keywords

  • accretion, accretion disks
  • binaries: general
  • celestial mechanics
  • gravitational waves
  • stars: mass-loss

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science

Cite this

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title = "Accreting Double White Dwarf Binaries: Implications for LISA",
abstract = "We explore the long-term evolution of mass-transferring white dwarf (WD) binaries undergoing both direct-impact and disk accretion and explore implications of such systems to gravitational-wave (GW) astronomy. We cover a broad range of initial component masses and show that these systems, the majority of which lie within the Laser Interferometer Space Antenna (LISA) sensitivity range, exhibit prominent negative orbital frequency evolution (chirp) for a significant fraction of their lifetimes. Using a galactic population synthesis, we predict ∼2700 of these systems will be observable with a negative chirp of 0.1 yr-2 by a space-based GW detector like LISA. We also show that detections of mass-transferring double WD systems by LISA may provide astronomers with unique ways of probing the physics governing close compact object binaries.",
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Accreting Double White Dwarf Binaries : Implications for LISA. / Kremer, Kyle; Breivik, Katelyn; Larson, Shane Louis; Kalogera, Vicky.

In: Astrophysical Journal, Vol. 846, No. 2, 95, 10.09.2017.

Research output: Contribution to journalArticle

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T1 - Accreting Double White Dwarf Binaries

T2 - Implications for LISA

AU - Kremer, Kyle

AU - Breivik, Katelyn

AU - Larson, Shane Louis

AU - Kalogera, Vicky

PY - 2017/9/10

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