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The binary confusion noise spectrum at LISA band depends strongly on observational period and abundance of Galactic close white dwarf binaries (CWDBs). We have investigated how the number of the resolved Galactic CWDBs varies with operation…

天体物理学 · 物理学 2009-11-07 Naoki Seto

The space-based gravitational wave (GW) detector, \emph{evolved Laser Interferometer Space Antenna} (eLISA) is expected to observe millions of compact Galactic binaries that populate our Milky Way. GW measurements obtained from the eLISA…

太阳与恒星天体物理 · 物理学 2015-06-22 Sweta Shah , Gijs Nelemans

The millihertz band is densely populated by continuous gravitational-wave signals from Galactic compact binaries, dominated by double white dwarfs (DWDs; binaries of two white dwarfs) with contributions from systems containing neutron stars…

Many gravitational wave (GW) sources in the LISA band are expected to have non-negligible eccentricity. Furthermore, many of them can undergo acceleration because they reside in the presence of a tertiary. Here we develop analytical and…

高能天体物理现象 · 物理学 2023-02-22 Zeyuan Xuan , Smadar Naoz , Xian Chen

The upcoming LISA mission offers the unique opportunity to study the Milky Way through gravitational wave radiation from Galactic binaries. Among the variety of Galactic gravitational wave sources, LISA is expected to individually resolve…

星系天体物理 · 物理学 2019-02-26 Valeriya Korol , Elena M. Rossi , Enrico Barausse

The observation of low-frequency gravitational waves with the Laser Interferometer Space Antenna will allow the study of new sources of gravitational radiation that are not accessible by ground-based instruments. Gravitational wave sources…

广义相对论与量子宇宙学 · 物理学 2019-05-22 Tyson B. Littenberg , Nicolas Yunes

In its observation band, the Laser Interferometer Space Antenna (LISA) will simultaneously observe stochastic gravitational-wave background (SGWB) signals of different origins; orbitally modulated waveforms from galactic white dwarf…

广义相对论与量子宇宙学 · 物理学 2021-05-18 Guillaume Boileau , Astrid Lamberts , Nelson Christensen , Neil J. Cornish , Renate Meyer

Planets orbiting post-common envelope binaries provide fundamental information on planet formation and evolution, especially for the yet nearly unexplored class of circumbinary planets. We searched for such planets in \odp, an eclipsing…

We investigate the detectability of post-Newtonian higher harmonics from Galactic double white dwarfs in the centihertz band ($\sim 0.01$ Hz). Using a synthetic population, we show that, unlike the quadrupole mode, higher harmonics remain…

广义相对论与量子宇宙学 · 物理学 2026-01-22 Naoki Seto

Five self-lensing binaries (SLBs) have been discovered with Kepler light curves. They contain white dwarfs (WDs) in AU-scale orbits that gravitationally lens solar-type companions. Forming SLBs likely requires common envelope evolution when…

太阳与恒星天体物理 · 物理学 2024-12-16 Natsuko Yamaguchi , Kareem El-Badry , Nicholas M. Sorabella

Binary interaction can cause stellar envelopes to be stripped, which significantly reduces the radius of the star. The orbit of a binary composed of a stripped star and a compact object can therefore be so tight that the gravitational…

太阳与恒星天体物理 · 物理学 2020-12-02 Y. Götberg , V. Korol , A. Lamberts , T. Kupfer , K. Breivik , B. Ludwig , M. R. Drout

We use a self-consistent Monte Carlo treatment of stellar dynamics to investigate black hole binaries that are dynamically ejected from globular clusters to determine if they will be gravitational wave sources. We find that many of the…

星系天体物理 · 物理学 2015-05-19 J. M. B. Downing , M. J. Benacquista , M. Giersz , R. Spurzem

It is widely accepted that quite a number of double compact objects (DCOs) in the Milky Way can be identified by future space-based gravitational wave (GW) detectors, while systematic investigations on the detection of the GW sources in…

高能天体物理现象 · 物理学 2023-07-18 Jian-Guo He , Yong Shao , Shi-Jie Gao , Xiang-Dong Li

We use a population synthesis approach to characterise, as a function of cosmic time, the extragalactic close binary population descended from stars of low to intermediate initial mass. The unresolved gravitational wave (GW) background due…

天体物理学 · 物理学 2008-11-26 Alison J. Farmer , E. S. Phinney

The Laser Interferometer Space Antenna (LISA), which is currently under construction, is designed to measure gravitational wave signals in the milli-Hertz frequency band. It is expected that tens of millions of Galactic binaries will be the…

天体物理仪器与方法 · 物理学 2022-10-12 Stefan H. Strub , Luigi Ferraioli , Cedric Schmelzbach , Simon C. Stähler , Domenico Giardini

The upcoming LISA mission is the only experiment that will allow us to study the Milky Way's structure using gravitational wave signals from Galactic double white dwarfs (DWDs). The total number of expected detections exceeds $10^5$.…

星系天体物理 · 物理学 2018-10-10 Valeriya Korol , Elena Maria Rossi , Enrico Barausse

The primordial stochastic gravitational wave background (SGWB) carries first-hand messages of early-universe physics, possibly including effects from inflation, preheating, cosmic strings, electroweak symmetry breaking, and etc. However,…

宇宙学与河外天体物理 · 物理学 2020-10-16 Zhen Pan , Huan Yang

The discovery of wide, eccentric Gaia neutron stars (NSs) in binaries with still evolving (likely main sequence) companions offers a new probe of mass transfer and pulsar recycling beyond the compact-binary regime. We model their origins…

太阳与恒星天体物理 · 物理学 2025-10-15 Debatri Chattopadhyay , Kyle A. Rocha , Seth Gossage , Vicky Kalogera

In the Galaxy, close binaries with compact objects are important low-frequency gravitational wave (GW) sources. As potential low-frequency GW sources, neutron star/white dwarf (WD) ultra-compact X-ray binaries (UCXBs) have been investigated…

高能天体物理现象 · 物理学 2023-02-22 Ke Qin , Long Jiang , Wen-Cong Chen

Planetary formation might occur at different stages of the stellar evolution of compact binaries. In recent years, the formation of second-generation planets has been tested in circumbinary discs formed by the ejection of stellar material…

地球与行星天体物理 · 物理学 2026-02-04 Arianna Nigioni , Diego Turrini , Camilla Danielski , Danae Polychroni , John E. Chambers