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相关论文: Detection of compact objects by means of gravitati…

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Binaries containing compact objects, if viewed close to edge on, can produce periodic brightening events under certain conditions on the masses, radii, and binary separation. Such flares are caused by one object gravitational lensing the…

太阳与恒星天体物理 · 物理学 2023-11-27 Guy Nir , Joshua S. Bloom

Detecting compact objects by means of their gravitational lensing effect on an observed companion in a binary system has already been suggested almost four decades ago. However, these predictions were made even before the first observations…

太阳与恒星天体物理 · 物理学 2015-05-19 S. Rahvar , A. Mehrabi , M. Dominik

Gravitational lensing provides a means to measure mass that does not rely on detecting and analysing light from the lens itself. Compact objects are ideal gravitational lenses, because they have relatively large masses and are dim. In this…

天体物理仪器与方法 · 物理学 2017-06-15 A. J. Harding , R. Di Stefano , S. Lépine , J. Urama , D. Pham , C. Baker

We explore a unique electromagnetic signature of stellar-mass compact-object binaries long before they are detectable in gravitational waves. We show that gravitational lensing of light emitting components of a compact-object binary, by the…

高能天体物理现象 · 物理学 2020-03-11 Daniel J. D'Orazio , Rosanne Di Stefano

We discuss a possible method for detection of dark companions of galactic objects of stellar mass. Such binary systems are likely to occur in the galactic disk and possibly also in the halo. The high incidence of binary and…

天体物理学 · 物理学 2009-10-22 A. D. Bolatto , E. E. Falco

The signature of the self-microlensing in compact binaries (white dwarfs, neutron stars and black holes) is a flare with the characteristic time of typically a few minutes. The probability of detecting these microlensing events can be as…

天体物理学 · 物理学 2015-06-24 Bo Qin , Xiang-Ping Wu , Zhenlong Zou

The vast majority of binaries containing a compact object and a regular star spend most of their time in a quiescent state where no strong interactions occur between components. Detection of these binaries is extremely challenging and only…

高能天体物理现象 · 物理学 2021-08-18 Grzegorz Wiktorowicz , Matthew Middleton , Norman Khan , Adam Ingram , Poshak Gandhi , Hugh Dickinson

The population of solitary compact objects in the Galaxy is very diffcult to investigate. In this paper we analyze the possibility of using microlensing searches to detect and to analyze the properties of the solitary black holes and…

天体物理学 · 物理学 2015-06-24 S. Oslowski , R. Moderski , T. Bulik , K. Belczynski

Binary systems containing a compact object may exhibit periodic brightening episodes due to gravitational lensing as the compact object transits the companion star. Such ``self-lensing'' signatures have been detected before for white dwarf…

Massive objects located between Earth and a compact binary merger can act as a magnifying glass improving the sensitivity of gravitational wave detectors to distant events. Depending on the parameters of the system, a point mass lens…

广义相对论与量子宇宙学 · 物理学 2023-10-27 Ruxandra Bondarescu , Helena Ubach , Oleg Bulashenko , Andrew P. Lundgren

The status of searches for gravitational microlensing events of the stars in our galaxy and in other galaxies of the Local Group, the interpretation of the results, some theory, and prospects for the future are reviewed. The searches have…

天体物理学 · 物理学 2011-05-05 Bohdan Paczynski

The Galaxy is suspected to contain hundreds of millions of binary white dwarf systems, a large fraction of which will have sufficiently small orbital period to emit gravitational radiation in band for space-based gravitational wave…

广义相对论与量子宇宙学 · 物理学 2013-05-29 Tyson B. Littenberg

The presence of brown dwarfs in the dark galactic halo could be detected through their gravitational lensing effect and experiments under way monitor about one million stars to observe a few lensing events per year. We show that if the…

天体物理学 · 物理学 2007-05-23 Paul Baillon , Alain Bouquet , Yannick Giraud-Héraud , Jean Kaplan

Many recent observational and theoretical studies suggest that globular clusters (GCs) host compact object populations large enough to play dominant roles in their overall dynamical evolution. Yet direct detection, particularly of black…

The current gravitational-wave localization methods rely mainly on sources with electromagnetic counterparts. Unfortunately, a binary black hole does not emit light. Due to this, it is generally not possible to localize these objects…

高能天体物理现象 · 物理学 2020-09-02 Otto A. Hannuksela , Thomas E. Collett , Mesut Çalışkan , Tjonnie G. F. Li

To detect brown dwarfs in the dark galactic halo through gravitational lensing, experiments follow the luminosity of millions of stars to observe a few lensing events par year. The luminosity of a star too faint to be continuously followed…

天体物理学 · 物理学 2007-05-23 Alain Bouquet

We present an improved search for binary compact-object mergers using a network of ground-based gravitational-wave detectors. We model a volumetric, isotropic source population and incorporate the resulting distribution over signal…

广义相对论与量子宇宙学 · 物理学 2018-05-29 Alexander H. Nitz , Thomas Dent , Tito Dal Canton , Stephen Fairhurst , Duncan A. Brown

We study how the angular resolution of LISA for merging massive black-hole binaries would be improved if we observe multiple gravitational wave ``images'' due to strong gravitational lensing. The correlation between fitting parameters is…

天体物理学 · 物理学 2009-11-07 Naoki Seto

Using the proposed space gravitational wave detector LISA, we will be able to measure the geometrical configurations of $\sim 10^4$ close white dwarf binaries in our Galaxy. The obtained data will be an entirely new resource to examine the…

高能天体物理现象 · 物理学 2024-10-31 Naoki Seto

We study gravitational lensing of gravitational waves from compact object binaries as a probe of compact dark matter (DM) objects such as primordial black holes. Assuming a point mass lens, we perform parameter estimation of lensed…

宇宙学与河外天体物理 · 物理学 2021-11-16 Juan Urrutia , Ville Vaskonen
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