Cumulative shift of periastron time of binary pulsar with Kozai–Lidov oscillation

Haruka Suzuki; Priti Gupta; Hirotada Okawa; Kei Ichi Maeda

doi:10.1093/mnrasl/slz058

Cumulative shift of periastron time of binary pulsar with Kozai–Lidov oscillation

Haruka Suzuki^*, Priti Gupta, Hirotada Okawa, Kei Ichi Maeda

^*Corresponding author for this work

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

7 Citations (Scopus)

Abstract

We study a hierarchical triple system with the Kozai–Lidov mechanism, and analyse the cumulative shift of periastron time of a binary pulsar by the emission of gravitational waves. Time evolution of the osculating orbital elements of the triple system is calculated by directly integrating the first-order post-Newtonian equations of motion. The Kozai–Lidov mechanism will bend the evolution curve of the cumulative shift when the eccentricity becomes large. We also investigate the parameter range of mass and semimajor axis of the third companion with which the bending of the cumulative-shift curve could occur within 100 yr.

Original language	English
Pages (from-to)	L52-L57
Journal	Monthly Notices of the Royal Astronomical Society: Letters
Volume	486
Issue number	1
DOIs	https://doi.org/10.1093/mnrasl/slz058
Publication status	Published - 2019 Jun 1

Keywords

Binaries (including multiple): close
Gravitational waves
Pulsars: general
Stars: black holes
Stars: kinematics and dynamics

ASJC Scopus subject areas

Astronomy and Astrophysics
Space and Planetary Science

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10.1093/mnrasl/slz058

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title = "Cumulative shift of periastron time of binary pulsar with Kozai–Lidov oscillation",

abstract = "We study a hierarchical triple system with the Kozai–Lidov mechanism, and analyse the cumulative shift of periastron time of a binary pulsar by the emission of gravitational waves. Time evolution of the osculating orbital elements of the triple system is calculated by directly integrating the first-order post-Newtonian equations of motion. The Kozai–Lidov mechanism will bend the evolution curve of the cumulative shift when the eccentricity becomes large. We also investigate the parameter range of mass and semimajor axis of the third companion with which the bending of the cumulative-shift curve could occur within 100 yr.",

keywords = "Binaries (including multiple): close, Gravitational waves, Pulsars: general, Stars: black holes, Stars: kinematics and dynamics",

author = "Haruka Suzuki and Priti Gupta and Hirotada Okawa and Maeda, {Kei Ichi}",

note = "Funding Information: We would like to thank Hideki Asada, Luc Blanchet, Naoki Seto, and Kei Yamada for the useful information and comments. P.G. is supported by Japanese Government (MEXT) Scholarship. This work was supported in part by JSPS KAKENHI Grant numbers JP16K05362 (KM) and JP17H06359 (KM). Publisher Copyright: {\textcopyright} 2019 The Author(s).",

year = "2019",

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doi = "10.1093/mnrasl/slz058",

language = "English",

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T1 - Cumulative shift of periastron time of binary pulsar with Kozai–Lidov oscillation

AU - Suzuki, Haruka

AU - Gupta, Priti

AU - Okawa, Hirotada

AU - Maeda, Kei Ichi

N1 - Funding Information: We would like to thank Hideki Asada, Luc Blanchet, Naoki Seto, and Kei Yamada for the useful information and comments. P.G. is supported by Japanese Government (MEXT) Scholarship. This work was supported in part by JSPS KAKENHI Grant numbers JP16K05362 (KM) and JP17H06359 (KM). Publisher Copyright: © 2019 The Author(s).

PY - 2019/6/1

Y1 - 2019/6/1

N2 - We study a hierarchical triple system with the Kozai–Lidov mechanism, and analyse the cumulative shift of periastron time of a binary pulsar by the emission of gravitational waves. Time evolution of the osculating orbital elements of the triple system is calculated by directly integrating the first-order post-Newtonian equations of motion. The Kozai–Lidov mechanism will bend the evolution curve of the cumulative shift when the eccentricity becomes large. We also investigate the parameter range of mass and semimajor axis of the third companion with which the bending of the cumulative-shift curve could occur within 100 yr.

AB - We study a hierarchical triple system with the Kozai–Lidov mechanism, and analyse the cumulative shift of periastron time of a binary pulsar by the emission of gravitational waves. Time evolution of the osculating orbital elements of the triple system is calculated by directly integrating the first-order post-Newtonian equations of motion. The Kozai–Lidov mechanism will bend the evolution curve of the cumulative shift when the eccentricity becomes large. We also investigate the parameter range of mass and semimajor axis of the third companion with which the bending of the cumulative-shift curve could occur within 100 yr.

KW - Binaries (including multiple): close

KW - Gravitational waves

KW - Pulsars: general

KW - Stars: black holes

KW - Stars: kinematics and dynamics

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DO - 10.1093/mnrasl/slz058

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JO - Monthly Notices of the Royal Astronomical Society: Letters

JF - Monthly Notices of the Royal Astronomical Society: Letters

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ER -

Cumulative shift of periastron time of binary pulsar with Kozai–Lidov oscillation

Abstract

Keywords

ASJC Scopus subject areas

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